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Old 11-30-06, 06:09 PM   #19 (permalink)
StanJ
Rookie
United States
 
Join Date: Mar 2005
Location: Chattanooga, TN
Posts: 39
Re: 4 bbl Carb for Lola Motor

Quote:
Originally Posted by John W
That looks superb !!

Question for Stan:
the mods to the float bowls - is this akin to using the LeMans bowls, or is it superior to using those ?

Cheers,
John.
I believe that our components offer a better solution to the problem of fuel slosh -- the main reason being that Holley’s “Le Mans” bowl design required a fairly drastic change in float pivot geometry which resulted in the float having significantly less mechanical leverage with which to exert control over incoming fuel pressure. This is in-fact the reason why Holley found it necessary to reduce the orifice size in the needle & seats sold in the kits from .110” to .097”. Otherwise, a reduction in fuel supply pressure would have been required, and that would have caused many more problems than it solved owing to inertia and vehicle dynamics. Back then however, reducing the inlet orifice size wasn’t a real problem, as a pair of .097”s at 40% drop and 8.5 psi would still allow enough fuel into the carb to support approximately 620 horsepower.

Today…well, actually a couple of years ago before the Trans-Am series went belly up due to SCCA losing all control over the cost of being competitive…Lozano Brothers’ 305 cu in small block Fords with one of our carbs very similar to the one you see here in this thread would routinely make a very drivable 775 - 780 horsepower at the flywheel. Trying to use the Le Mans style bowls in that application would have meant an engine failure DNF every time out due to fuel starvation.
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