revive your ride spring giveaway ends this sunday

[Jeff Saline]

Luc, Listers, I made a mistake in the nomenclature in the valve wear paragraph below. I wrote seat and it should be face. I've posted the correction below. Sorry for any confusion. Best, Jeff Saline The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650 On Sat, 14 Jun 2014 11:02:57 -0600 "Jeff Saline salinej1@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> writes: On Fri, 13 Jun 2014 12:47:17 -0700 (PDT) "Luc Legrain zrislois2klr@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> writes: Ladies and Germs , It's been quite while since I posted . I finally stopped procrastinating, and on this 5th rainy day, finally decided to do a valve check . Background.. A19 ..36436.2 miles ; first and only valves check was done at 1500 miles ( bought it brand new ) here is what I have : intake right 0.012m/m intake left 0.004 m/m ( only guessing on this one ,my gauges don't go below .006 mils) exhaust right 0.011 m/m exhaust left 0.015 m/m no ideas what size shims are used (number upside down ) can't know with out removing cams . 34936.2 miles ago I got from Fred that little plastic can with 16 (?) shims in ,kept oiled and hidden took me 2 hours to find the booger ! Before I take the cams off please tell me what size shim I need to use . Don't wanna use the calculator .. (lazy) . I want to be on the top end of the specs , so I can ride happily ever after ! Thanks for the feed back . <><><>><> <><><><><><> Luc, I'm gonna question your measurements. I see from your post today they are in mms. The conversion for mms to inches (I think in inches so that is what I use) is 25.4. So taking your measurements and converting by dividing your measurement by 25.4 here is what I get: right intake 0.012mm = 0.0005" left intake 0.004mm = 0.0002" right exhaust 0.011mm = 0.0004" left exhaust 0.015mm = 0.0006" I don't know that I have ever seen a feeler gauge less than 0.0010". So I'll suggest all your measurements are incorrect. One of the reasons I work in inches is that is how I was raised and that is how I think. I can work in metric if I have to but it becomes work. For the valve adjustments the shim change sizes by 0.002" per size change. For me that makes conversions simple and easy to do in my head. Clearances for the KLR valves are intake 0.004"-0.008" and exhaust 0.006"-0.010". So if you redo your measurements you can quickly figure out the changes like this example. Say the intake is at 0.003". You want 0.008" which is a change of 0.005". Shims only change in sizes of 0.002" so to keep from going over you can only change the shim two sizes (0.004") thinner. If the shim in place is a 260 you would go smaller two sizes to a 250 and the clearance would then be 0.007" which would be as close as you could get. Shim sizes change like this: 275, 270, 265, 260, 255, 250, 245, 240, 235, 230 etc. I'm not sure how small you can go but by 210 you would for sure need to be considering doing a valve job on the head. You asked about how valves wear. The valve is shaped kind of like a mushroom. You have the head of the valve like the head of a mushroom. And you have the stem of the valve like the stem of a mushroom. In the head where the valve is placed is a seat. The head of the valve has a machined surface called the **seat** CORRECTION: SHOULD BE "FACE". The face of the valve which is on the bottom side of the valve head mates with the valve seat in the head to make a tight seal. This fit is a precision fit when correctly done and is the seal for the combustion chamber. The valve and seat wear as they slam together in operation. A valve on the KLR opens and closes every other crankshaft rotation. So at idle of 1,200 rpm the intake valve is opening and closing 600 times a minute or 10 times per second. As the valve face and seat wear it allows the valve to move deeper into the head. This causes the valve stem to move closer to the cam which is the clearance you are measuring and adjusting. The stem normally doesn't wear shorter it is the valve seating deeper into the head which is what you compensate for by adjusting the valves. Along this same line of thinking... clearance is important as it adjusts when the valve opens and closes in relation to the cam/crank and also for how long a valve is closed allowing heat to transfer from the valve to the seat/head. A tighter valve clearance will open the valve sooner and close it later which might allow more flow. At the same time it is allowing the valve less time against the seat and that reduces heat transfer allowing the valve to get hotter and probably accelerate wear. If the clearance is too small, as the engine gets hot the valve expands from the heat and could be held open allowing leakage. In some cases it can be so bad as to keep the engine from running and will also cause the edge of the valve to burn. Hope this is helpful. Best, Jeff Saline The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650 . . . . . . . . ____________________________________________________________ The Fall of Microsoft Bill Gates has realized the technology that could mean the end of his $300B empire. fool.com ____________________________________________________________ SafeAuto Car Insurance Get a car insurance quote in 3 steps & pay only state minimum coverage http://thirdpartyoffers.juno.com/TGL3141/539c99f7cf27e19f76e0fst03vuc [Non-text portions of this message have been removed]

[Luc Legrain]

All, Jeff,Thank you for the help and explanations . Following Mr. Saline's reply, I'm afraid I cannot retake my measurements,after my last post yesterday I went ahead and took cams off , so I will have to go with the measurements I have . As far as the convertion from mils to inches in my line of work we use 0.03937  instead of the 0.254 .Question : left exhaust I have 0.015 mils , the shim I had is .230 I used the calculator from the web and found that if I wanted to go to the top exhaust specs I would need a .205 shim . Don't understand why I need a thinner shim to go up to top of specs ??  Thank You . On Saturday, June 14, 2014 1:53 PM, "Jeff Saline salinej1@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> wrote: Luc, Listers, I made a mistake in the nomenclature in the valve wear paragraph below. I wrote seat and it should be face.  I've posted the correction below. Sorry for any confusion. Best, Jeff Saline The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650 On Sat, 14 Jun 2014 11:02:57 -0600 "Jeff Saline salinej1@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> writes: On Fri, 13 Jun 2014 12:47:17 -0700 (PDT) "Luc Legrain zrislois2klr@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> writes: Ladies and Germs , It's been quite while since I posted . I finally stopped procrastinating, and on this 5th rainy day, finally decided to do a valve check . Background.. A19 ..36436.2 miles ; first and only valves check was done at 1500 miles ( bought it brand new ) here is what I have : intake right 0.012m/m                                 intake  left  0.004 m/m ( only guessing on this one ,my gauges don't go below .006 mils)                                 exhaust right 0.011 m/m                                    exhaust left    0.015 m/m                       no ideas what size shims are used (number upside down ) can't know with out removing cams . 34936.2 miles ago I got from Fred that little plastic can with 16 (?) shims in ,kept oiled and hidden took me 2 hours to find the booger ! Before I take the cams off please tell me what size shim I need to use . Don't wanna use the calculator .. (lazy) . I want to be on the top end of the specs , so I can ride happily ever after ! Thanks for the feed back .  <><><>><> <><><><><><> Luc, I'm gonna question your measurements.  I see from your post today they are in mms.  The conversion for mms to inches (I think in inches so that is what I use) is 25.4.  So taking your measurements and converting by dividing your measurement by 25.4 here is what I get: right intake 0.012mm = 0.0005" left intake 0.004mm = 0.0002" right exhaust 0.011mm = 0.0004" left exhaust 0.015mm = 0.0006" I don't know that I have ever seen a feeler gauge less than 0.0010". So I'll suggest all your measurements are incorrect. One of the reasons I work in inches is that is how I was raised and that is how I think.  I can work in metric if I have to but it becomes work. For the valve adjustments the shim change sizes by 0.002" per size change.  For me that makes conversions simple and easy to do in my head. Clearances for the KLR valves are intake 0.004"-0.008" and exhaust 0.006"-0.010". So if you redo your measurements you can quickly figure out the changes like this example.  Say the intake is at 0.003".  You want 0.008" which is a change of 0.005".  Shims only change in sizes of 0.002" so to keep from going over you can only change the shim two sizes (0.004") thinner. If the shim in place is a 260 you would go smaller two sizes to a 250 and the clearance would then be 0.007" which would be as close as you could get.  Shim sizes change like this:  275, 270, 265, 260, 255, 250, 245, 240, 235, 230 etc.  I'm not sure how small you can go but by 210 you would for sure need to be considering doing a valve job on the head. You asked about how valves wear.  The valve is shaped kind of like a mushroom.  You have the head of the valve like the head of a mushroom. And you have the stem of the valve like the stem of a mushroom.  In the head where the valve is placed is a seat.  The head of the valve has a machined surface called the **seat** CORRECTION: SHOULD BE "FACE".  The face of the valve which is on the bottom side of the valve head mates with the valve seat in the head to make a tight seal.  This fit is a precision fit when correctly done and is the seal for the combustion chamber.  The valve and seat wear as they slam together in operation.  A valve on the KLR opens and closes every other crankshaft rotation.  So at idle of 1,200 rpm the intake valve is opening and closing 600 times a minute or 10 times per second.  As the valve face and seat wear it allows the valve to move deeper into the head.  This causes the valve stem to move closer to the cam which is the clearance you are measuring and adjusting.  The stem normally doesn't wear shorter it is the valve seating deeper into the head which is what you compensate for by adjusting the valves. Along this same line of thinking... clearance is important as it adjusts when the valve opens and closes in relation to the cam/crank and also for how long a valve is closed allowing heat to transfer from the valve to the seat/head.  A tighter valve clearance will open the valve sooner and close it later which might allow more flow.  At the same time it is allowing the valve less time against the seat and that reduces heat transfer allowing the valve to get hotter and probably accelerate wear. If the clearance is too small, as the engine gets hot the valve expands from the heat and could be held open allowing leakage.  In some cases it can be so bad as to keep the engine from running and will also cause the edge of the valve to burn. Hope this is helpful. Best, Jeff Saline The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650 . . . . . . . . ____________________________________________________________ The Fall of Microsoft Bill Gates has realized the technology that could mean the end of his $300B empire. fool.com ____________________________________________________________ SafeAuto Car Insurance Get a car insurance quote in 3 steps & pay only state minimum coverage http://thirdpartyoffers.juno.com/TGL3141/539c99f7cf27e19f76e0fst03vuc [Non-text portions of this message have been removed] ------------------------------------ ------------------------------------ List Sponsors - Dual Sport News: http://www.dualsportnews.com/ Arrowhead Motorsports: http://www.arrowheadmotorsports.com/ List FAQ courtesy of Chris Krok: http://www.bigcee.com/klr650faq.html Members Map https://maps.google.com/maps/ms?msid=212558560286766214899.0004d0fa9f1732283bb6f&msa=0&ll=38.522384,-109.489746&spn=6.831383,9.624023YahooGroups Links To visit your group on the web, go to:     http://groups.yahoo.com/group/DSN_KLR650/ Your email settings:     Individual Email | Traditional To change settings online go to:     http://groups.yahoo.com/group/DSN_KLR650/join     (Yahoo! ID required) To change settings via email:     DSN_KLR650-digest@yahoogroups.com     DSN_KLR650-fullfeatured@yahoogroups.com To unsubscribe from this group, send an email to:     DSN_KLR650-unsubscribe@yahoogroups.com Your use of Yahoo Groups is subject to:     https://info.yahoo.com/legal/us/yahoo/utos/terms/

[RobertWichert]

The thinner the shim, the more space left, therefore, the higher the gap, hence, top of the specs. What, exactly, did you measure with what, exactly?  I am seriously concerned that your conversion factor is so different from what I would expect.  Therefore please be prepared to measure the clearances after installation and change them if necessary.  Right? Robert Wichert P.Eng. LEED AP BD&C HERS I/II CEPE CEA BPI CERTIFIED SF/MF GREEN POINT RATER +1 916 966 9060 FAX +1 916 966 9068 =============================================== On 6/15/2014 7:26 AM, Luc Legrain zrislois2klr@... [DSN_KLR650] wrote:

  All, Jeff, Thank you for the help and explanations .  Following Mr. Saline's reply, I'm afraid I cannot retake my measurements,after my last post yesterday I went ahead and took cams off , so I will have to go with the measurements I have . As far as the convertion from mils to inches in my line of work we use 0.03937  instead of the 0.254 . Question : left exhaust I have 0.015 mils , the shim I had is .230 I used the calculator from the web and found that if I wanted to go to the top exhaust specs I would need a .205 shim . Don't understand why I need a thinner shim to go up to top of specs ??  Thank You . On Saturday, June 14, 2014 1:53 PM, "Jeff Saline salinej1@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com wrote: Luc, Listers, I made a mistake in the nomenclature in the valve wear paragraph below. I wrote seat and it should be face.  I've posted the correction below. Sorry for any confusion. Best, Jeff Saline The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650 On Sat, 14 Jun 2014 11:02:57 -0600 "Jeff Saline salinej1@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> writes: On Fri, 13 Jun 2014 12:47:17 -0700 (PDT) "Luc Legrain zrislois2klr@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> writes: Ladies and Germs , It's been quite while since I posted . I finally stopped procrastinating, and on this 5th rainy day, finally decided to do a valve check . Background.. A19 ..36436.2 miles ; first and only valves check was done at 1500 miles ( bought it brand new ) here is what I have : intake right 0.012m/m                                 intake  left  0.004 m/m ( only guessing on this one ,my gauges don't go below .006 mils)                                 exhaust right 0.011 m/m                                    exhaust left    0.015 m/m                       no ideas what size shims are used (number upside down ) can't know with out removing cams . 34936.2 miles ago I got from Fred that little plastic can with 16 (?) shims in ,kept oiled and hidden took me 2 hours to find the booger ! Before I take the cams off please tell me what size shim I need to use . Don't wanna use the calculator .. (lazy) . I want to be on the top end of the specs , so I can ride happily ever after ! Thanks for the feed back .  <><><>><> <><><><><><> Luc, I'm gonna question your measurements.  I see from your post today they are in mms.  The conversion for mms to inches (I think in inches so that is what I use) is 25.4.  So taking your measurements and converting by dividing your measurement by 25.4 here is what I get: right intake 0.012mm = 0.0005" left intake 0.004mm = 0.0002" right exhaust 0.011mm = 0.0004" left exhaust 0.015mm = 0.0006" I don't know that I have ever seen a feeler gauge less than 0.0010". So I'll suggest all your measurements are incorrect. One of the reasons I work in inches is that is how I was raised and that is how I think.  I can work in metric if I have to but it becomes work. For the valve adjustments the shim change sizes by 0.002" per size change.  For me that makes conversions simple and easy to do in my head. Clearances for the KLR valves are intake 0.004"-0.008" and exhaust 0.006"-0.010". So if you redo your measurements you can quickly figure out the changes like this example.  Say the intake is at 0.003".  You want 0.008" which is a change of 0.005".  Shims only change in sizes of 0.002" so to keep from going over you can only change the shim two sizes (0.004") thinner. If the shim in place is a 260 you would go smaller two sizes to a 250 and the clearance would then be 0.007" which would be as close as you could get.  Shim sizes change like this:  275, 270, 265, 260, 255, 250, 245, 240, 235, 230 etc.  I'm not sure how small you can go but by 210 you would for sure need to be considering doing a valve job on the head. You asked about how valves wear.  The valve is shaped kind of like a mushroom.  You have the head of the valve like the head of a mushroom. And you have the stem of the valve like the stem of a mushroom.  In the head where the valve is placed is a seat.  The head of the valve has a machined surface called the **seat** CORRECTION: SHOULD BE "FACE".  The face of the valve which is on the bottom side of the valve head mates with the valve seat in the head to make a tight seal.  This fit is a precision fit when correctly done and is the seal for the combustion chamber.  The valve and seat wear as they slam together in operation.  A valve on the KLR opens and closes every other crankshaft rotation.  So at idle of 1,200 rpm the intake valve is opening and closing 600 times a minute or 10 times per second.  As the valve face and seat wear it allows the valve to move deeper into the head.  This causes the valve stem to move closer to the cam which is the clearance you are measuring and adjusting.  The stem normally doesn't wear shorter it is the valve seating deeper into the head which is what you compensate for by adjusting the valves. Along this same line of thinking... clearance is important as it adjusts when the valve opens and closes in relation to the cam/crank and also for how long a valve is closed allowing heat to transfer from the valve to the seat/head.  A tighter valve clearance will open the valve sooner and close it later which might allow more flow.  At the same time it is allowing the valve less time against the seat and that reduces heat transfer allowing the valve to get hotter and probably accelerate wear. If the clearance is too small, as the engine gets hot the valve expands from the heat and could be held open allowing leakage.  In some cases it can be so bad as to keep the engine from running and will also cause the edge of the valve to burn. Hope this is helpful. Best, Jeff Saline The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650 . . . . . . . . ____________________________________________________________ The Fall of Microsoft Bill Gates has realized the technology that could mean the end of his $300B empire. fool.com ____________________________________________________________ SafeAuto Car Insurance Get a car insurance quote in 3 steps & pay only state minimum coverage http://thirdpartyoffers.juno.com/TGL3141/539c99f7cf27e19f76e0fst03vuc [Non-text portions of this message have been removed] ------------------------------------ ------------------------------------ List Sponsors - Dual Sport News: http://www.dualsportnews.com/ Arrowhead Motorsports: http://www.arrowheadmotorsports.com/ List FAQ courtesy of Chris Krok: http://www.bigcee.com/klr650faq.html Members Map https://maps.google.com/maps/ms?msid=212558560286766214899.0004d0fa9f1732283bb6f&msa=0&ll=38.522384,-109.489746&spn=6.831383,9.624023YahooGroups Links To visit your group on the web, go to:     http://groups.yahoo.com/group/DSN_KLR650/ Your email settings:     Individual Email | Traditional To change settings online go to:     http://groups.yahoo.com/group/DSN_KLR650/join     (Yahoo! ID required) To change settings via email:     DSN_KLR650-digest@yahoogroups.com     DSN_KLR650-fullfeatured@yahoogroups.com To unsubscribe from this group, send an email to:     DSN_KLR650-unsubscribe@yahoogroups.com Your use of Yahoo Groups is subject to:     https://info.yahoo.com/legal/us/yahoo/utos/terms/

[Comcast]

There has to be a decimal point error floating around somewhere.   Bill AhrensW. A. Ahrens & Associates

On Jun 15, 2014, at 7:26 AM, "Luc Legrain zrislois2klr@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> wrote:

  All, Jeff,Thank you for the help and explanations . Following Mr. Saline's reply, I'm afraid I cannot retake my measurements,after my last post yesterday I went ahead and took cams off , so I will have to go with the measurements I have . As far as the convertion from mils to inches in my line of work we use 0.03937  instead of the 0.254 .Question : left exhaust I have 0.015 mils , the shim I had is .230 I used the calculator from the web and found that if I wanted to go to the top exhaust specs I would need a .205 shim . Don't understand why I need a thinner shim to go up to top of specs ??  Thank You . On Saturday, June 14, 2014 1:53 PM, "Jeff Saline salinej1@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> wrote: Luc, Listers, I made a mistake in the nomenclature in the valve wear paragraph below. I wrote seat and it should be face.  I've posted the correction below. Sorry for any confusion. Best, Jeff Saline The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650 On Sat, 14 Jun 2014 11:02:57 -0600 "Jeff Saline salinej1@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> writes: On Fri, 13 Jun 2014 12:47:17 -0700 (PDT) "Luc Legrain zrislois2klr@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> writes: Ladies and Germs , It's been quite while since I posted . I finally stopped procrastinating, and on this 5th rainy day, finally decided to do a valve check . Background.. A19 ..36436.2 miles ; first and only valves check was done at 1500 miles ( bought it brand new ) here is what I have : intake right 0.012m/m                                 intake  left  0.004 m/m ( only guessing on this one ,my gauges don't go below .006 mils)                                 exhaust right 0.011 m/m                                    exhaust left    0.015 m/m                       no ideas what size shims are used (number upside down ) can't know with out removing cams . 34936.2 miles ago I got from Fred that little plastic can with 16 (?) shims in ,kept oiled and hidden took me 2 hours to find the booger ! Before I take the cams off please tell me what size shim I need to use . Don't wanna use the calculator .. (lazy) . I want to be on the top end of the specs , so I can ride happily ever after ! Thanks for the feed back .  <><><>><> <><><><><><> Luc, I'm gonna question your measurements.  I see from your post today they are in mms.  The conversion for mms to inches (I think in inches so that is what I use) is 25.4.  So taking your measurements and converting by dividing your measurement by 25.4 here is what I get: right intake 0.012mm = 0.0005" left intake 0.004mm = 0.0002" right exhaust 0.011mm = 0.0004" left exhaust 0.015mm = 0.0006" I don't know that I have ever seen a feeler gauge less than 0.0010". So I'll suggest all your measurements are incorrect. One of the reasons I work in inches is that is how I was raised and that is how I think.  I can work in metric if I have to but it becomes work. For the valve adjustments the shim change sizes by 0.002" per size change.  For me that makes conversions simple and easy to do in my head. Clearances for the KLR valves are intake 0.004"-0.008" and exhaust 0.006"-0.010". So if you redo your measurements you can quickly figure out the changes like this example.  Say the intake is at 0.003".  You want 0.008" which is a change of 0.005".  Shims only change in sizes of 0.002" so to keep from going over you can only change the shim two sizes (0.004") thinner. If the shim in place is a 260 you would go smaller two sizes to a 250 and the clearance would then be 0.007" which would be as close as you could get.  Shim sizes change like this:  275, 270, 265, 260, 255, 250, 245, 240, 235, 230 etc.  I'm not sure how small you can go but by 210 you would for sure need to be considering doing a valve job on the head. You asked about how valves wear.  The valve is shaped kind of like a mushroom.  You have the head of the valve like the head of a mushroom. And you have the stem of the valve like the stem of a mushroom.  In the head where the valve is placed is a seat.  The head of the valve has a machined surface called the **seat** CORRECTION: SHOULD BE "FACE".  The face of the valve which is on the bottom side of the valve head mates with the valve seat in the head to make a tight seal.  This fit is a precision fit when correctly done and is the seal for the combustion chamber.  The valve and seat wear as they slam together in operation.  A valve on the KLR opens and closes every other crankshaft rotation.  So at idle of 1,200 rpm the intake valve is opening and closing 600 times a minute or 10 times per second.  As the valve face and seat wear it allows the valve to move deeper into the head.  This causes the valve stem to move closer to the cam which is the clearance you are measuring and adjusting.  The stem normally doesn't wear shorter it is the valve seating deeper into the head which is what you compensate for by adjusting the valves. Along this same line of thinking... clearance is important as it adjusts when the valve opens and closes in relation to the cam/crank and also for how long a valve is closed allowing heat to transfer from the valve to the seat/head.  A tighter valve clearance will open the valve sooner and close it later which might allow more flow.  At the same time it is allowing the valve less time against the seat and that reduces heat transfer allowing the valve to get hotter and probably accelerate wear. If the clearance is too small, as the engine gets hot the valve expands from the heat and could be held open allowing leakage.  In some cases it can be so bad as to keep the engine from running and will also cause the edge of the valve to burn. Hope this is helpful. Best, Jeff Saline The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650 . . . . . . . . ____________________________________________________________ The Fall of Microsoft Bill Gates has realized the technology that could mean the end of his $300B empire. fool.com ____________________________________________________________ SafeAuto Car Insurance Get a car insurance quote in 3 steps & pay only state minimum coverage http://thirdpartyoffers.juno.com/TGL3141/539c99f7cf27e19f76e0fst03vuc [Non-text portions of this message have been removed] ------------------------------------ ------------------------------------ List Sponsors - Dual Sport News: http://www.dualsportnews.com/ Arrowhead Motorsports: http://www.arrowheadmotorsports.com/ List FAQ courtesy of Chris Krok: http://www.bigcee.com/klr650faq.html Members Map https://maps.google.com/maps/ms?msid=212558560286766214899.0004d0fa9f1732283bb6f&msa=0&ll=38.522384,-109.489746&spn=6.831383,9.624023YahooGroups Links To visit your group on the web, go to:     http://groups.yahoo.com/group/DSN_KLR650/ Your email settings:     Individual Email | Traditional To change settings online go to:     http://groups.yahoo.com/group/DSN_KLR650/join     (Yahoo! ID required) To change settings via email:     DSN_KLR650-digest@yahoogroups.com     DSN_KLR650-fullfeatured@yahoogroups.com To unsubscribe from this group, send an email to:     DSN_KLR650-unsubscribe@yahoogroups.com Your use of Yahoo Groups is subject to:     https://info.yahoo.com/legal/us/yahoo/utos/terms/

[Comcast]

Also, intense mathematical analysis reveals that 1 / 0.254 = 3.937, which is 10 times his .03937, the number of inches per millimeter.  Bill AhrensW. A. Ahrens & Associates

On Jun 15, 2014, at 7:26 AM, "Luc Legrain zrislois2klr@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> wrote:

  All, Jeff,Thank you for the help and explanations . Following Mr. Saline's reply, I'm afraid I cannot retake my measurements,after my last post yesterday I went ahead and took cams off , so I will have to go with the measurements I have . As far as the convertion from mils to inches in my line of work we use 0.03937  instead of the 0.254 .Question : left exhaust I have 0.015 mils , the shim I had is .230 I used the calculator from the web and found that if I wanted to go to the top exhaust specs I would need a .205 shim . Don't understand why I need a thinner shim to go up to top of specs ??  Thank You . On Saturday, June 14, 2014 1:53 PM, "Jeff Saline salinej1@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> wrote: Luc, Listers, I made a mistake in the nomenclature in the valve wear paragraph below. I wrote seat and it should be face.  I've posted the correction below. Sorry for any confusion. Best, Jeff Saline The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650 On Sat, 14 Jun 2014 11:02:57 -0600 "Jeff Saline salinej1@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> writes: On Fri, 13 Jun 2014 12:47:17 -0700 (PDT) "Luc Legrain zrislois2klr@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> writes: Ladies and Germs , It's been quite while since I posted . I finally stopped procrastinating, and on this 5th rainy day, finally decided to do a valve check . Background.. A19 ..36436.2 miles ; first and only valves check was done at 1500 miles ( bought it brand new ) here is what I have : intake right 0.012m/m                                 intake  left  0.004 m/m ( only guessing on this one ,my gauges don't go below .006 mils)                                 exhaust right 0.011 m/m                                    exhaust left    0.015 m/m                       no ideas what size shims are used (number upside down ) can't know with out removing cams . 34936.2 miles ago I got from Fred that little plastic can with 16 (?) shims in ,kept oiled and hidden took me 2 hours to find the booger ! Before I take the cams off please tell me what size shim I need to use . Don't wanna use the calculator .. (lazy) . I want to be on the top end of the specs , so I can ride happily ever after ! Thanks for the feed back .  <><><>><> <><><><><><> Luc, I'm gonna question your measurements.  I see from your post today they are in mms.  The conversion for mms to inches (I think in inches so that is what I use) is 25.4.  So taking your measurements and converting by dividing your measurement by 25.4 here is what I get: right intake 0.012mm = 0.0005" left intake 0.004mm = 0.0002" right exhaust 0.011mm = 0.0004" left exhaust 0.015mm = 0.0006" I don't know that I have ever seen a feeler gauge less than 0.0010". So I'll suggest all your measurements are incorrect. One of the reasons I work in inches is that is how I was raised and that is how I think.  I can work in metric if I have to but it becomes work. For the valve adjustments the shim change sizes by 0.002" per size change.  For me that makes conversions simple and easy to do in my head. Clearances for the KLR valves are intake 0.004"-0.008" and exhaust 0.006"-0.010". So if you redo your measurements you can quickly figure out the changes like this example.  Say the intake is at 0.003".  You want 0.008" which is a change of 0.005".  Shims only change in sizes of 0.002" so to keep from going over you can only change the shim two sizes (0.004") thinner. If the shim in place is a 260 you would go smaller two sizes to a 250 and the clearance would then be 0.007" which would be as close as you could get.  Shim sizes change like this:  275, 270, 265, 260, 255, 250, 245, 240, 235, 230 etc.  I'm not sure how small you can go but by 210 you would for sure need to be considering doing a valve job on the head. You asked about how valves wear.  The valve is shaped kind of like a mushroom.  You have the head of the valve like the head of a mushroom. And you have the stem of the valve like the stem of a mushroom.  In the head where the valve is placed is a seat.  The head of the valve has a machined surface called the **seat** CORRECTION: SHOULD BE "FACE".  The face of the valve which is on the bottom side of the valve head mates with the valve seat in the head to make a tight seal.  This fit is a precision fit when correctly done and is the seal for the combustion chamber.  The valve and seat wear as they slam together in operation.  A valve on the KLR opens and closes every other crankshaft rotation.  So at idle of 1,200 rpm the intake valve is opening and closing 600 times a minute or 10 times per second.  As the valve face and seat wear it allows the valve to move deeper into the head.  This causes the valve stem to move closer to the cam which is the clearance you are measuring and adjusting.  The stem normally doesn't wear shorter it is the valve seating deeper into the head which is what you compensate for by adjusting the valves. Along this same line of thinking... clearance is important as it adjusts when the valve opens and closes in relation to the cam/crank and also for how long a valve is closed allowing heat to transfer from the valve to the seat/head.  A tighter valve clearance will open the valve sooner and close it later which might allow more flow.  At the same time it is allowing the valve less time against the seat and that reduces heat transfer allowing the valve to get hotter and probably accelerate wear. If the clearance is too small, as the engine gets hot the valve expands from the heat and could be held open allowing leakage.  In some cases it can be so bad as to keep the engine from running and will also cause the edge of the valve to burn. Hope this is helpful. Best, Jeff Saline The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650 . . . . . . . . ____________________________________________________________ The Fall of Microsoft Bill Gates has realized the technology that could mean the end of his $300B empire. fool.com ____________________________________________________________ SafeAuto Car Insurance Get a car insurance quote in 3 steps & pay only state minimum coverage http://thirdpartyoffers.juno.com/TGL3141/539c99f7cf27e19f76e0fst03vuc [Non-text portions of this message have been removed] ------------------------------------ ------------------------------------ List Sponsors - Dual Sport News: http://www.dualsportnews.com/ Arrowhead Motorsports: http://www.arrowheadmotorsports.com/ List FAQ courtesy of Chris Krok: http://www.bigcee.com/klr650faq.html Members Map https://maps.google.com/maps/ms?msid=212558560286766214899.0004d0fa9f1732283bb6f&msa=0&ll=38.522384,-109.489746&spn=6.831383,9.624023YahooGroups Links To visit your group on the web, go to:     http://groups.yahoo.com/group/DSN_KLR650/ Your email settings:     Individual Email | Traditional To change settings online go to:     http://groups.yahoo.com/group/DSN_KLR650/join     (Yahoo! 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[Tim Pruitt]

Thanks Fred! On Friday, June 13, 2014 11:36 AM, "'Fred Hink' moabmc@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> wrote:       [img]https://ec.yimg.com/ec?url=http%3A%2F%2 ... 2CNWSA--~E[/img]  

The Spring 2014 Revive Your Ride Spring Giveaway ends this Sunday (6-15-14).  Now s your chance if you haven t already entered in this drawing to have a chance at $30K in prizes.  If you win you could update your motorcycle or atv with any item from my shop. There are many different prizes and it is all free.  Just sign up on the Revive Your Ride Giveaway Entry page and enter my Dealer Entry Code   139927[color=#000000].  http://www.reviveyourride.org/[/color]   That is all there is too it.   Good Luck!   Fred Arrowhead Motorsports http://www.arrowheadmotorsports.com

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