NetViper said:
Doug,
Have you ever thought of usign a BBSC instead of the comptech? Wouldn't it give you more power in the upper RPM needed for racing?
I used to think that I needed to have 400+ HP in my 3.0 NSX motor, and went about all different ways trying to get there, at the expense of reliability. I have given up on that approach.
My new theory is that proper suspension, aero, and brake modifications is what wins at the local club races. (and driving skill, of course) More powerful forced induction motors just seem to cause problems when you try to tweak them for max HP on the dyno. In local club road racing, the car with the most HP usually does not win, it is the car that corners and stops the best that usually wins.
So as long as I get a dependable, reliable 360-370 RWHP out of a 3.0 motor, I am a happy camper.
Also remember that things that work on the street, do not necessarily work on the track. On the track you have the car running full throttle at the redline for 20-30 minutes straight, which you never get to do on the street. I have run the Comptech supercharger in 2 hour enduros without any problems.
Of course I would rather have a nice 3.2 motor with a Comptech supercharger on it, as that might be the safe way to get 400+ RWHP with reliability, but those 3.2 motors are hard to come by, and are very expensive.
If Honda would come up with a next gen NSX with 360-380 HP, and then we could bolt on something like a comptech supercharger to give us a dependable 460-480 HP, then the car would be awesome on the track.
I've blown a lot of engines up, but I can't really pin the blame on the Comptech supercharger. Usually it is something stupid like:
1. Bad gas
2. Did a 5-2 downshift using the 6 speed tranny instead of 5-4 downshift at 120
3. NOS
4. Oil starvation on a high bank oval turn
5. Electrical/injector problems causing engine to run lean
So now I make sure I bring my own race gas to the track, I have the 5 speed which is hard to botch a downshift, I don't use NOS, I have and accusump that kicks in if the oil pressure should drop, I have a good wiring harness, all wiring connections are solid, and I carry around an extra set of injectors. I also keep my fingers crossed!
-Doug
A good day at the track is when you don't have to dick around with the engine