04-27-2003, 09:33 AM
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CC Member
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Join Date: Jul 2000
Location: Deer Park, TX, USA,
Posts: 128
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Not Ranked
Tom -
Interesting numbers. I haven't done a chassis dyno. I have heard wildly different corrections to account for the drivetrain losses (approx.), but in my slightly larger engine, I got almost 100 more hp and much more than 100 additional fp. Other than the ECU, I have about the same setup.
This raises the question, though, about injector size. Do the people you are working with feel that you are getting the engine's full potential with 36 lb. injectors? (Remember, I am using 65 lb. injectors). What is your Duty Cycle at around 5000 rpm while at maximum acceleration?
Just looked at the dyno curves. I guess that you couldn't log low enough to see the peak in the torque. Also, looking at John's curve (other post), both are somewhat different than mine. I was logged beginning at 2600 rpm. My torque was already at 525 fp, and rose steadily to 548 at 4700 rpm, then tailed off at the typical rate.
BTW, mine is in the shop having the engine rebuilt to the 'specs' that I originally asked for - not a full-out drag racing motor, which is what was built for me, as it turns out. I had 8 valve springs break (one shattered) while driving 35 mph on my Main St. The fellow redoing my engine (and his machinist) said that with the parts I had in the engine, I should never have lasted 1000 miles - I just turned 3100!
I still hope to bring it by your part of the country in late July!?!?
Regards,
Frank Newman
Last edited by Naja; 04-27-2003 at 09:44 AM..
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