[DeTomaso] Stalling on hard braking

[michael@michaelshortt.com]

Nothing like good Ole American ingenuity.

Congrats on solving the problem.

Did you paint the calipers? What color?


Michael Shortt

On Thu, Aug 1, 2013 at 3:12 PM, Boyd Casey <boyd411 at gmail.com> wrote:

> I had mentioned that since I installed my new Brembo Calipers ( the same
> ones used in the  996 model ) (2001 to 2005 911 Turbo) A perfect choice for
> the Pantera due to their similar weight and  weight distribution . Along
> with my dual CNC master cylinders, balance bar my and oversize  Coleman
> vented rotors with gas vents , my car stops so hard and fast that I risk
> having teeth fly out as a result of the negative g forces! Anyway ever
> since these brakes were installed I have had a problem with stalling under
> hard braking. I obtained and started reading the Holley 4150 double pumper
> manual in an effort to remedy this situation as well as improve my
> Carbperformance. I found out several interesting things. Apparently
> many people
> mistakenly buy a larger CFM carb in the mistaken belief that it will give
> them more gas and more power. The truth is a higher CFM carb will give more
> power ( to the correct engine ) ie: worked heads, High CI displacement,
> High compression pistons. radical cam , headers etc but a smaller CFM
> carbwill give much better throttle response and power off the line.
> Another
> interesting thing I read said that an engine with #%! CI displacement
> should have an air cleaner at least 14" in diameter and 4" high with a
> minimum of 3/4" clearance between the vents and the lid of the air cleaner.
> I was running a smaller air cleaner because I liked the way it looked so it
> was both to small in diameter and too narrow ( the vents were too close to
> the lid of the air cleaner. I reinstalled my dual plenum that uses two K&N
> style air filters that allows much greater cfm and has almost 4" clearance
> above the vents. The next thing ( although it should really be the first
> thing is to adjust the float levels so gas is just dribbling out of the
> sight holes. They also recommend vent whistles but since I didn't have a
> Holley rebuild kit or float gaskets I used a trick i found on the "Off
> Road" web sights. They recommend taking a piece of tubing and connecting
> the two vents. This prevents the gas in the float bowls from sloshing under
> hard braking and accelerating and causing a flooding situation. Since as i
> said I didn't have float bowl gaskets handy I couldn't install my new vent
> whistles so instead I took a round a 6" piece of gas line and attached it
> to the two vents and cut a small hole in the middle near the air cleaner
> mounting post. I also used some carb cleaner and gave everything the once
> over. So far it appears to have done the trick. I only tested it
> accelerating and braking up and down my block but so far it seems to be
> working.
> Boyd
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-- 







Michael L. Shortt
Savannah, Georgia
www.michaelshortt.com
michael at michaelshortt.com
912-232-9390


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