5 GT Turbo possible misfire ??

[ash ggturbo]

morning every1 so yesterday i found out after talking ton the guy that built my carb that it was a group A so set for power
so long story short i have a little throttle delay
and sort of misfire on run down
also noticed it was a bit lumpy jerky in traffic yesterday at low revs any help or advice would be apricated

 

[Brigsy]

Id be looking for a stock venturi carb and repacing. The grp a are/were never great.

 

[ash ggturbo]

Id be looking for a stock venturi carb and repacing. The grp a are/were never great.

ok strange as its just been built buy a well know carb builder on here he builds and sells loads

 

[Brigsy]

The fuelling is usually pretty crap on grp a so unless your prepared to do lots of road testing with an afr gauge changing jets it will never be great. There will always be a compromise too it will be rich where it shouldnt be.

I have personally removed a few grp a carbs from gtts and went back to stock rejetted carb which worked much better.

 

[ash ggturbo]

The fuelling is usually pretty crap on grp a so unless your prepared to do lots of road testing with an afr gauge changing jets it will never be great. There will always be a compromise too it will be rich where it shouldnt be.

I have personally removed a few grp a carbs from gtts and went back to stock rejetted carb which worked much better.

yeah i just spoke to ashley simmonds as i used to work for him he said the same

 

[DaveL485]

The fuelling is usually pretty crap on grp a so unless your prepared to do lots of road testing with an afr gauge changing jets it will never be great. There will always be a compromise too it will be rich where it shouldnt be.

I have personally removed a few grp a carbs from gtts and went back to stock rejetted carb which worked much better.

Had one on my 11T back in the day, drove me mad, binned it off and went back to stock.