Stalling under Breaking
Discussion
I seem to be experiencing stalling under heavy breaking to a stop or near stop.
I understand that this is a common problem with carb fed engines. I have tried lowering the float levels and it seems to make little or no difference.
The engine is flooding, judging by the amount of smoke that comes out the back after restarting.
Any suggestions or similar experiences?
I understand that this is a common problem with carb fed engines. I have tried lowering the float levels and it seems to make little or no difference.
The engine is flooding, judging by the amount of smoke that comes out the back after restarting.
Any suggestions or similar experiences?
Hi Mark, Yes, your right, it is the float levels, i have the same problem currently but i'm persevering with it while i try to resolve the engine problems.
Best suggestion is to lower it on the secondary side until it doesn't happen then work back up.
I also had this problem with the Cobra and resolved it, "as above"
Best suggestion is to lower it on the secondary side until it doesn't happen then work back up.
I also had this problem with the Cobra and resolved it, "as above"
I might be wrong but jet extensions might help. There a common thing and Real Steel should have them. I had the same problem in my GT40, but the Carb I have know has Jet extensions and does not suffer with it. Just a word of warning, alter the fuel boul hieght to much could be a problem with running lean if your not carful.
Anyway I have found setting up the Pedals correctly for heal and toe makes it easyer to keep the old girl running. It's a habit I've got into but don't realy need at present. Plus it sounds great blipping the throttle down the gears, while braking.
Anyway I have found setting up the Pedals correctly for heal and toe makes it easyer to keep the old girl running. It's a habit I've got into but don't realy need at present. Plus it sounds great blipping the throttle down the gears, while braking.
Just taking this subject a step further, I've just gone through my Holley manual, it says that this condition does occur under high G's (accel/Braking etc) and reccomend fittting a vent tube baffle or whistle as it's known. I know my carb already has this whistle fitted, but the book goes on to say that if this doesn't cure the problem, then extending the vent pipe on top of the the carb will prevent flooding of the venturi's under extreme conditions?
Worth a try Eh!!
Worth a try Eh!!
Already tried something similar with mine.
I checked for whistle vents. Mine has them too.
I also tried putting a piece if rubber hose off the vent pipes to extend them to about 4" tall (just under the top of the air filter). I suspected that this would diagnose if the fuel was coming from the atomiser rings in the carb or through the vent tubes.
I made no difference - suggesting that the fuel was coming in through the jets and the atomiser rings in the carb.
I was going to try jet extensions but real steel was out of stock at the time.
Some more elaborate form of venting could be worth a try.
I checked for whistle vents. Mine has them too.
I also tried putting a piece if rubber hose off the vent pipes to extend them to about 4" tall (just under the top of the air filter). I suspected that this would diagnose if the fuel was coming from the atomiser rings in the carb or through the vent tubes.
I made no difference - suggesting that the fuel was coming in through the jets and the atomiser rings in the carb.
I was going to try jet extensions but real steel was out of stock at the time.
Some more elaborate form of venting could be worth a try.
I have heard that too. I think they quote up to 450Bhp max.
The fact that American Speed use these on their 540Bhp motors adds further weight to the previous heated (and somewhat childish arguments) about engine failures and inadequate fuelling etc…look under the thread "vez"
I myslef would not use this unit – The AS decision to use its casts doubt in my mind over the power claims or the reliability claims.
The only real way to go is a throttle body set up ( www.kinsler.com ) an a proper ECU - e.g. motec, alpha etc... however this gets very expensive.
Perhaps we need a more reasoned discussion on the fuelling issues as it is evidently still a cause for concern over many owners.
STIG - Perhaps you could set up a new thread with various key posings from the previous dicussions and we could have a clean start on this?
The fact that American Speed use these on their 540Bhp motors adds further weight to the previous heated (and somewhat childish arguments) about engine failures and inadequate fuelling etc…look under the thread "vez"
I myslef would not use this unit – The AS decision to use its casts doubt in my mind over the power claims or the reliability claims.
The only real way to go is a throttle body set up ( www.kinsler.com ) an a proper ECU - e.g. motec, alpha etc... however this gets very expensive.
Perhaps we need a more reasoned discussion on the fuelling issues as it is evidently still a cause for concern over many owners.
STIG - Perhaps you could set up a new thread with various key posings from the previous dicussions and we could have a clean start on this?
If you want Kinsler then check out my new engine, http://community.webshots.com/scrpts/editPhotos.fcgi
Yes thats a Full Frogger Nos System. Read it and weep.
Yes thats a Full Frogger Nos System. Read it and weep.
GTRCLIVE said: If you want Kinsler then check out my new engine, http://community.webshots.com/scrpts/editPhotos.fcgi
Yes thats a Full Frogger Nos System. Read it and weep.
I'm weeping - 'cos the link is broken !
adequatespeed said: I have heard that too. I think they quote up to 450Bhp max.
The fact that American Speed use these on their 540Bhp motors adds further weight to the previous heated (and somewhat childish arguments) about engine failures and inadequate fuelling etc…look under the thread "vez"
I myslef would not use this unit – The AS decision to use its casts doubt in my mind over the power claims or the reliability claims.
The only real way to go is a throttle body set up ( www.kinsler.com ) an a proper ECU - e.g. motec, alpha etc... however this gets very expensive.
Perhaps we need a more reasoned discussion on the fuelling issues as it is evidently still a cause for concern over many owners.
STIG - Perhaps you could set up a new thread with various key posings from the previous dicussions and we could have a clean start on this?
Mark - be careful what you say regarding AS's claims unless you want them to take you to court for litigation!
Gassing Station | Ultima | Top of Page | What's New | My Stuff