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http://www.frenchandlogan.com/phpBB3/viewtopic.php?f=52&t=266547
<><><><><><><><> <><><><><><><><> Luc, I don't think I have enough information about how or where you ride to give an opinion about slide drilling. I can tell you that I haven't done it to mine. Mine has some mods, I guess others have to be the judge if they are major or not. I suppose the trade off for fuel economy that folks talk about would be enough to put me off on it. I'd also guess that unless a guy was an 8 or 9 tenths rider it wouldn't make much of a difference. I'm still using the original stock brake pads at 23,000 plus miles. Maybe the folks that wear out a set of front pads in 5,000 miles would find it useful. I think you can get a diaphragm and slide at the Harley dealer for about $50. So it might not be a real expensive mod and it surely would be reversible. Best, Jeff Saline ABC # 4412 South Dakota Airmarshal Airheads Beemer Club www.airheads.org The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650, 79 R100RT> What is Mr. Saline opinion on this ? Is this ok for > my stock A19, no " major "mods,beside cosmetics.
TPI has 'em for $39. It's reversable anyway, you can just fill the hole with JB Weld and redrill it to the stock size. Michael -- "It ain't those parts of the Bible that I can't understand that bother me, it is the parts that I do understand." -- Mark Twain San Francisco, CA> I think you can get a diaphragm and slide at the Harley dealer for about > $50. So it might not be a real expensive mod and it surely would be > reversible.
<><><><><><><><><><> <><><><><><><><><><> TC, Your last sentence has my interest. Could you be a bit more specific as to the definition of "run much better"? An example or two might be helpful for me to understand the benefits of drilling a slide. I suppose having a little more pep when accelerating would give some folks the nudge to twist the wrist a bit more in other riding conditions too. Maybe that's where the fuel economy drops show up. I'm sure if you open a properly tuned air fuel mixture screw (by your 1/2 to 1 turn) that will drop fuel economy. Best, Jeff Saline ABC # 4412 South Dakota Airmarshal Airheads Beemer Club www.airheads.org The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650, 79 R100RT> Drilling the carburetor slide vacuum port (not the hole for the main > jet needle) works best when you also use a lighter slide spring such > as the one supplied in a DynoJet kit. You may, however, contact > DynoJet and order the spring separately if you haven't already > purchased a complete kit. > > Drilling the vacuum port to 7/64" (1/8" for larger motors with more > vacuum) will generally improve throttle response but will NOT > measurably reduce your fuel economy -- your right wrist has a > greater impact on fuel economy than a relatively minor modification > such as a drilled vacuum slide. > > Drill your slide (either 7/64" or 1/8" is okay), install a lighter > slide spring if you wish, and open up the air fuel mixture needle by > 1/2 to 1 turn. Your bike will run much better.
main> Drilling the carburetor slide vacuum port (not the hole for the
such> jet needle) works best when you also use a lighter slide spring
greater> as the one supplied in a DynoJet kit. You may, however, contact > DynoJet and order the spring separately if you haven't already > purchased a complete kit. > > Drilling the vacuum port to 7/64" (1/8" for larger motors with more > vacuum) will generally improve throttle response but will NOT > measurably reduce your fuel economy -- your right wrist has a
a> impact on fuel economy than a relatively minor modification such as
by> drilled vacuum slide. > > Drill your slide (either 7/64" or 1/8" is okay), install a lighter > slide spring if you wish, and open up the air fuel mixture needle
<><><><><><><><><><> <><><><><><><><><><> TC, Your last sentence has my interest. Could you be a bit more specific as to the definition of "run much better"? An example or two might be helpful for me to understand the benefits of drilling a slide. I suppose having a little more pep when accelerating would give some folks the nudge to twist the wrist a bit more in other riding conditions too. Maybe that's where the fuel economy drops show up. I'm sure if you open a properly tuned air fuel mixture screw (by your 1/2 to 1 turn) that will drop fuel economy. Best, Jeff Saline ABC # 4412 South Dakota Airmarshal Airheads Beemer Club www.airheads.org The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650, 79 R100RT List sponsored by Dual Sport News at: www.dualsportnews.com List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html Member Map at: http://www.frappr.com/dsnklr650 Yahoo! Groups Links ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs> 1/2 to 1 turn. Your bike will run much better.
<><><><><><><><><><><> <><><><><><><><><><><> Greg, Thanks for another very good explanation. First it was a tire evaluation and now it's performance based on an internal carb modification. You're on a roll. : ) It sure looks like you scored well with drilling the slide. I'm running a 14/46 combo in the dirt. Your 15/47 is about mid-point between my 14/46 and 15/46 combos. Looks like it would be pretty comparable to a 14/44 combo. I know it's a significant improvement compared to the stock 15/43 combo. I bet you'd really like a 14/47 combo in the dirt. It might be a bit slow in twisties. I sure appreciate your detailed and complete comments. Best, Jeff Saline ABC # 4412 South Dakota Airmarshal Airheads Beemer Club www.airheads.org The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650, 79 R100RT> Jeff, > > I drilled the slide out to 1/8" on my '95. What it took care of for > me was > a slight lag at lower rpms when you twisted the throttle. I can't > tell any > difference with the middle and upper rpms. > > SNIP > > GregM
for> Jeff, > > I drilled the slide out to 1/8" on my '95. What it took care of
<><><><><><><><><><><> <><><><><><><><><><><> Greg, Thanks for another very good explanation. First it was a tire evaluation and now it's performance based on an internal carb modification. You're on a roll. : ) It sure looks like you scored well with drilling the slide. I'm running a 14/46 combo in the dirt. Your 15/47 is about mid-point between my 14/46 and 15/46 combos. Looks like it would be pretty comparable to a 14/44 combo. I know it's a significant improvement compared to the stock 15/43 combo. I bet you'd really like a 14/47 combo in the dirt. It might be a bit slow in twisties. I sure appreciate your detailed and complete comments. Best, Jeff Saline ABC # 4412 South Dakota Airmarshal Airheads Beemer Club www.airheads.org The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650, 79 R100RT ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs> me was a slight lag at lower rpms when you twisted the throttle. I > can't tell any difference with the middle and upper rpms. > > SNIP > > GregM
<><><><><><><><><><><> <><><><><><><><><><><> Greg, Thanks for another very good explanation. First it was a tire evaluation and now it's performance based on an internal carb modification. You're on a roll. : ) It sure looks like you scored well with drilling the slide. I'm running a 14/46 combo in the dirt. Your 15/47 is about mid-point between my 14/46 and 15/46 combos. Looks like it would be pretty comparable to a 14/44 combo. I know it's a significant improvement compared to the stock 15/43 combo. I bet you'd really like a 14/47 combo in the dirt. It might be a bit slow in twisties. I sure appreciate your detailed and complete comments. Best, Jeff Saline ABC # 4412 South Dakota Airmarshal Airheads Beemer Club www.airheads.org The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650, 79 R100RT --------------------------------- Looking for the perfect gift? Give the gift of Flickr! [Non-text portions of this message have been removed]> Jeff, > > I drilled the slide out to 1/8" on my '95. What it took care of for > me was > a slight lag at lower rpms when you twisted the throttle. I can't > tell any > difference with the middle and upper rpms. > > SNIP > > GregM