[DeTomaso] Holley Carb jet extension-stalls on braking

MikeLDrew at aol.com MikeLDrew at aol.com
Tue Jul 28 19:38:48 EDT 2009


In a message dated 7/28/09 10 22 53, claywillmott at hotmail.com writes:


> Questions:
> 
> Can I try to have someone reset the float higher to stop stalling on 
> braking?
> 
>>>You set the float lower, not higher.
> 
> Do I actually need those venturi pipe things or the jet extensions above?
> 
>>>Maybe?   Probably?   Experimentation will tell for sure.   The first 
thing to do (free) is lower the float.
> 
> >Do I have to remove the carb?
> 
>>>To do what?   Lower the float?   No.   I suppose you could install the 
jet extensions with the carb in place, but you have to remove the fuel line 
in order to remove the rear bowl.
> 
> A local shop told me if I bring it in they can try to adjust it then put 
> it on the dyno??
> 
>>>Dyno-tuning isn't going to help this problem.   It may be a good idea 
for other reasons, but unless they can accelerate their dyno to 60 mph and 
suddenly stop it (not the rollers, the whole thing!), then it's useless for 
your particular problem.
> 
> I am not sure if my carb needs rebuilding or anything it is about 6 yrs 
> old and is a Holley 4150 with 800CFM double pump with manual choke and 
> mechanical secondary according to tech today when I gave him the stamped # on my 
> carb.
> 
>>>It shouldn't need anything except adjustment, and perhaps the 
modifications outlined above.

Good luck!

Mike




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