Vapour Lock....again

[Wim Jetten]

I never used to have vapour lock problems, after I had fitted a heatshield (by Moss) and 5mm insulating gaskets years ago.

However this summer I had a few times great difficulty to restart a very hot engine.

I did change the floats during last winter. Replaced the original style brass floats by so-called stay-up floats. This might have reduced the height of the fuel level in the bowls. I think I am going to increase the fuel level a bit now to see if that has any effect on the hot starting behaviour.

 

Wim

 

[b]Von:[/b] mg-tabc@yahoogroups.com mg-tabc@yahoogroups.com> [b]Im Auftrag von [/b]Duncan morelists@yahoo.com [mg-tabc] [b]Gesendet:[/b] Montag, 15. Juli 2019 04:08 [b]An:[/b] arm@telus.net; mg-tabc@yahoogroups.com [b]Betreff:[/b] Re: [mg-tabc] Vapour Lock....again

 

If choking does not help start, try tickling the carbs.  Your fuel height at bridge may be set low.

Duncan-

 

On Sunday, July 14, 2019, 04:32:39 PM PDT, 'arm@telus.net' arm@telus.net [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote:

 

 

 

Listers, I was out for a run to the shops today in the TC and was bitten by vapour lock again on the return trip. This is an ongoing issue for me when ever I get stuck in traffic or do a nice run (20 minutes or more) and then a brief stop. I'm used to this but it seems to be happening more often lately, I THINK the timing and mixture are correct, but that being said it does seem a bit down on power. I digress. Has anyone fitted heat shields or MGB style spacers between the carb body and the intake manifold? With what results? I have a good rad, water wetter, four blade fan. Runs great as long as I keep moving. Seems the issue is when the heat from the manifold(s) sinks into the carb bodies while stopped. I await the wisdom of the list Cheers, Ross

[Joe Curto]

I have Fuel Bowl Koozies that are working well contact me off List and we can chat -----Original Message----- From: Stephen D Stierman morgan7709@sbcglobal.net [mg-tabc] mg-tabc-noreply@yahoogroups.com> To: mg-tabc mg-tabc@yahoogroups.com>; arm arm@telus.net> Sent: Mon, Jul 15, 2019 10:30 am Subject: Re: [mg-tabc] Vapour Lock....again   TC 2911 is set up with spacers under the carbs and a home made heat shield above a ceramic coated exhaust manifold. While this is helpful, on a good hot day, heat soak starting may require a bit of choke for smooth running for a short while. The car is also black and that warm bonnet doesn't help things either. Steve TC2911

On Sunday, July 14, 2019, 7:32:41 PM EDT, 'arm@telus.net' arm@telus.net [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote:   Listers, I was out for a run to the shops today in the TC and was bitten by vapour lock again on the return trip. This is an ongoing issue for me when ever I get stuck in traffic or do a nice run (20 minutes or more) and then a brief stop. I'm used to this but it seems to be happening more often lately, I THINK the timing and mixture are correct, but that being said it does seem a bit down on power. I digress. Has anyone fitted heat shields or MGB style spacers between the carb body and the intake manifold? With what results? I have a good rad, water wetter, four blade fan. Runs great as long as I keep moving. Seems the issue is when the heat from the manifold(s) sinks into the carb bodies while stopped. I await the wisdom of the list Cheers, Ross

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[diecuts2333]

Good advice Tom! With respect to fuel, I used to go 'low cost wins' but after some mixed engine performance, one station gets the business, costs slightly more, but engine performance has been stabilized for all vehicles.    The 47 Packard , always prone to vapor lock, even starts, albeit reluctantly. A sure fix is a can of starting fluid, always start after a jolt or two in the air intake.   (used on trips over 200 miles.)  Lee Jacobsen, Dearborn MI SA2333 Tickford, SA2184 Saloon. -----Original Message----- From: twilson@indy.rr.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> To: mg-tabc mg-tabc@yahoogroups.com> Sent: Mon, Jul 15, 2019 10:01 am Subject: [mg-tabc] Re: Vapour Lock....again Try another tank of fuel before you start fiddling with everything.  Test the easy stuff before getting a not the complex. Tom Wilson ------------------------------------ Posted by: twilson@indy.rr.com ------------------------------------ ------------------------------------ Yahoo Groups Links To visit your group on the web, go to:     http://groups.yahoo.com/group/mg-tabc/ Your email settings:     Individual Email | Traditional To change settings online go to:     http://groups.yahoo.com/group/mg-tabc/join     (Yahoo! ID required) To change settings via email:     mg-tabc-digest@yahoogroups.com     mg-tabc-fullfeatured@yahoogroups.com To unsubscribe from this group, send an email to:     mg-tabc-unsubscribe@yahoogroups.com Your use of Yahoo Groups is subject to:     https://info.yahoo.com/legal/us/yahoo/utos/terms/

[Norman Verona]

Wim,

 

Take the top and piston off, the fuel level should be just under the top of the jet. You should be able to do minor adjustments by bending the arm.

 

[b][u]Norman Verona aka "Email Norman"[/u][/b]

11 Cherry close, Royston, S71 4LZ

Mob: 0741 9905 741

Web: www.frenchblat.com

 

[b]From:[/b] mg-tabc@yahoogroups.com mg-tabc@yahoogroups.com> [b]On Behalf Of [/b]'Wim Jetten' jetten@bluewin.ch [mg-tabc] [b]Sent:[/b] 15 July 2019 16:13 [b]To:[/b] 'Duncan' morelists@yahoo.com>; arm@telus.net; mg-tabc@yahoogroups.com [b]Subject:[/b] AW: [mg-tabc] Vapour Lock....again

 

 

I never used to have vapour lock problems, after I had fitted a heatshield (by Moss) and 5mm insulating gaskets years ago.

However this summer I had a few times great difficulty to restart a very hot engine.

I did change the floats during last winter. Replaced the original style brass floats by so-called stay-up floats. This might have reduced the height of the fuel level in the bowls. I think I am going to increase the fuel level a bit now to see if that has any effect on the hot starting behaviour.

 

Wim

 

[b]Von:[/b] mg-tabc@yahoogroups.com mg-tabc@yahoogroups.com> [b]Im Auftrag von [/b]Duncan morelists@yahoo.com [mg-tabc] [b]Gesendet:[/b] Montag, 15. Juli 2019 04:08 [b]An:[/b] arm@telus.net; mg-tabc@yahoogroups.com [b]Betreff:[/b] Re: [mg-tabc] Vapour Lock....again

 

If choking does not help start, try tickling the carbs.  Your fuel height at bridge may be set low.

Duncan-

 

On Sunday, July 14, 2019, 04:32:39 PM PDT, 'arm@telus.net' arm@telus.net [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote:

 

 

 

Listers, I was out for a run to the shops today in the TC and was bitten by vapour lock again on the return trip. This is an ongoing issue for me when ever I get stuck in traffic or do a nice run (20 minutes or more) and then a brief stop. I'm used to this but it seems to be happening more often lately, I THINK the timing and mixture are correct, but that being said it does seem a bit down on power. I digress. Has anyone fitted heat shields or MGB style spacers between the carb body and the intake manifold? With what results? I have a good rad, water wetter, four blade fan. Runs great as long as I keep moving. Seems the issue is when the heat from the manifold(s) sinks into the carb bodies while stopped. I await the wisdom of the list Cheers, Ross

[Joe Curto]

I mounted a Pump in the back like an MGTF and pushed fuel through a dummy pump on firewall on my TD as if you look at the firewall arrangement that pump is in the hottest part of the car both on TC & TD -----Original Message----- From: 'Andrew P. Reshke' apreshke@comcast.net [mg-tabc] mg-tabc-noreply@yahoogroups.com> To: arm@telus.net arm@telus.net>; mg-tabc mg-tabc@yahoogroups.com> Sent: Mon, Jul 15, 2019 12:04 am Subject: Re: [mg-tabc] Vapour Lock....again   I had the same trouble with my '48 TC and the only sure way I found to prevent vapor lock was to install a 12v solid state electric fuel pump in an inconspicuous place close to the gas tank outlet.  I also installed a switch under the dash so that I could shut off the auxiliary pump, as needed.  Cost was nominal - less than $25. Andy in Sacramento On 7/14/2019 4:32 PM, 'arm@telus.net' arm@telus.net [mg-tabc] wrote:

  Listers, I was out for a run to the shops today in the TC and was bitten by vapour lock again on the return trip. This is an ongoing issue for me when ever I get stuck in traffic or do a nice run (20 minutes or more) and then a brief stop. I'm used to this but it seems to be happening more often lately, I THINK the timing and mixture are correct, but that being said it does seem a bit down on power. I digress. Has anyone fitted heat shields or MGB style spacers between the carb body and the intake manifold? With what results? I have a good rad, water wetter, four blade fan. Runs great as long as I keep moving. Seems the issue is when the heat from the manifold(s) sinks into the carb bodies while stopped. I await the wisdom of the list Cheers, Ross

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[Clive Sherriff]

Yes, THet are usuall 9 / 10 mm and you normally have to fit longer studs. But they work just as well at half thickness, so I just pop them on the lathe and machiened them to about 5mm, and used a thin washer under a slightlythinner nut, and find no need for longer studs. [img]https://ec.yimg.com/ec?url=https%3A%2F%2Fipmcdn.avast.com%2Fimages%2Ficons%2Ficon-envelope-tick-round-orange-animated-no-repeat-v1.gif&t=1563492180&sig=PHh7F8mn6A9NUI37Aymtlw--~E[/img] Virus-free. www.avast.com

On Mon, 15 Jul 2019 at 09:09, Peter Cole pcoleuk@gmail.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote: [u][/u] Ross, I agree with Norman, I fitted plastic spacers when I rebuild my car and have never suffered from vapour lock. From memory they are around 9 - 10mm (3/8 ins) thick. They are available from Burlen Fuel systems and eBay. Regards Peter Cole. On Mon, 15 Jul 2019 at 00:32, 'arm@telus.net' arm@telus.net [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote: [u][/u] Listers, I was out for a run to the shops today in the TC and was bitten by vapour lock again on the return trip. This is an ongoing issue for me when ever I get stuck in traffic or do a nice run (20 minutes or more) and then a brief stop. I'm used to this but it seems to be happening more often lately, I THINK the timing and mixture are correct, but that being said it does seem a bit down on power. I digress. Has anyone fitted heat shields or MGB style spacers between the carb body and the intake manifold? With what results? I have a good rad, water wetter, four blade fan. Runs great as long as I keep moving. Seems the issue is when the heat from the manifold(s) sinks into the carb bodies while stopped. I await the wisdom of the list Cheers, Ross

[img]https://ec.yimg.com/ec?url=https%3A%2F%2Fipmcdn.avast.com%2Fimages%2Ficons%2Ficon-envelope-tick-round-orange-animated-no-repeat-v1.gif&t=1563492180&sig=PHh7F8mn6A9NUI37Aymtlw--~E[/img] Virus-free. www.avast.com

[SHERWOOD PARKER]

#ygrps-yiv-1988112854 P {margin-top:0;margin-bottom:0;} I made Coozies for the float bowls.  They are out of Muffler Wrap and half-round on the back half of the bowls held in place with 3 strands of .020 safety wire.  You have to look for them to see them but they worked. Sherwood Parker MG TC Tempe, AZ, USA [b]From:[/b] mg-tabc@yahoogroups.com mg-tabc@yahoogroups.com> on behalf of Joe Curto joecurto@aol.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> [b]Sent:[/b] Monday, July 15, 2019 8:14 AM [b]To:[/b] morgan7709@sbcglobal.net; mg-tabc@yahoogroups.com; arm@telus.net [b]Subject:[/b] Re: [mg-tabc] Vapour Lock....again    

I have Fuel Bowl Koozies that are working well contact me off List and we can chat -----Original Message----- From: Stephen D Stierman morgan7709@sbcglobal.net [mg-tabc] mg-tabc-noreply@yahoogroups.com> To: mg-tabc mg-tabc@yahoogroups.com>; arm arm@telus.net> Sent: Mon, Jul 15, 2019 10:30 am Subject: Re: [mg-tabc] Vapour Lock....again   TC 2911 is set up with spacers under the carbs and a home made heat shield above a ceramic coated exhaust manifold. While this is helpful, on a good hot day, heat soak starting may require a bit of choke for smooth running for a short while. The car is also black and that warm bonnet doesn't help things either. Steve TC2911

On Sunday, July 14, 2019, 7:32:41 PM EDT, 'arm@telus.net' arm@telus.net [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote:   Listers, I was out for a run to the shops today in the TC and was bitten by vapour lock again on the return trip. This is an ongoing issue for me when ever I get stuck in traffic or do a nice run (20 minutes or more) and then a brief stop. I'm used to this but it seems to be happening more often lately, I THINK the timing and mixture are correct, but that being said it does seem a bit down on power. I digress. Has anyone fitted heat shields or MGB style spacers between the carb body and the intake manifold? With what results? I have a good rad, water wetter, four blade fan. Runs great as long as I keep moving. Seems the issue is when the heat from the manifold(s) sinks into the carb bodies while stopped. I await the wisdom of the list Cheers, Ross

[n.truck]

The consensus opinion seems to be that the vapor lock issues are largely due to modern fuel formulation, at least in the U.S.

For me, Installing a secondary (mine is primary) modern fuel pump has made vapor lock much less of a problem, but not a total solution. No Room for spacers, which cause the air cleaners to hit the bonnet.

I look forward to trying the half-cozies described by Sherwood Parker.

Norman T.