[ba] Re: [s-cars] 80tq Update: 516 wheel hp, 450 wheel TQ

CaptMagu at aol.com CaptMagu at aol.com
Thu Mar 3 11:14:07 EST 2005


First of all, thank you for your painstaking data logging as you've gone 
along on this project. As I compare some of my altitude compensated dyno graphs, 
there are some striking differences. With both your current T-61 and the HO 
hybrid graphs, your torque figures are significantly lower than your horsepower 
values. In my case, lets talk round numbers so we don't get into any altitude 
conversion gobledygook(very technical engineering jargon), my torque values 
exceed the horsepower significantly. This produces a nice looking double hump 
graph that provides a very streetable car. 

I realize that streetability is not what you were about here, but I think 
there is an avenue that you can improve upon that would provide more down low 
power. I'm talking about your charge air system from your compressor outlet 
through the head. I've done a lot of work on my charge air plumbing and I think 
that's where I get my more robust torque curve. As these large compressor turbos 
are trying to spool up, any blockage in the charge air path will hinder the 
spool. Once they're up to speed, there's not much that is going to get in the 
way of their power. I've had a lot of work done to my FMIC to enhance its flow 
characteristics. I also had a lot of work done to my intake manifold i.e. 
drilled, ported, enlarged. My throttle body had a Big Bore mod done to it. I know 
you've had your head ported and so have I but if the restriction is on the way 
there, its not going to matter.

You probably remember that I had a similar fueling issue when I had my car 
out there a little over a year ago. My solution was a fuel reservoir, for the 
stock pump to feed, 044 Bosch pump, larger fuel lines, and larger injectors. 

Anyway, I just thought I'd share some. Regardless, keep up the great work. I 
should be mounting my tubular manifold and GT 35R shortly. I had a .63 AR GT 
30R hot side machined to fit my 35R so the results should be very interesting. 
Oh yeah, I polished the compressor;-) Gotta be worth something!

Hap, wit dakine turbo talk from Evahboost, Maguire

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