[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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