Hey all, does anyone else have dyno sheets for their cars? I'm interested in seeing the hp and torque curves of other people's ride with the different modifications they've done. I have mine posted on my profile, just wondering if anyone else does.

82ZXT
71 510 autocross & 71 510 daily driver

 

The dyno was done in 3rd gear for my a/t which is identical to 4th in a 5spd. It's the closest to 1:1 you can get so it's more accurate for hp. If you wanna jack up your numbers you can go with a 2nd gear (3 on 5 spds) run, but I wanna see what I'm really putting down during 1/4 mile runs, since numbers don't mean jack without timeslips.
The hp I get doesn't matter how low it is for me since I don't have an ego problem, maybe for some more is always better regardless of how they choose to get those numbers. Yes, I could have done a 2nd gear pull, but there's no point since it's not near 1:1. Anyway, the dyno doesn't start at a lower RPM because you have to go full throttle during your run and you have to start at an engine RPM that won't bog the motor and also kick down into a gear you don't want. Another reason is that hp at rpms below ~2700 is never done at full throttle during racing anyway, even when you launch most people I know rev and dump from >3000rpms.

I hope this makes sense and clears up any confusion that might have happened. Another thing to note is that my numbers for hp and torque are lower because I have an exhaust manifold leak currently, and my exhaust system isn't that big in diameter either which isn't great for a turbo car. The fuel pressure regulator hose blew off too during the first pull which I didn't put on until after I got off the dyno and noticed my car was idling way high. That may have also affected the hp numbers of the pulls. Turbo owners, be sure to clamp that hose down as they are not factory clamped. None of the all original Z's at the Datsun Show had clamps either.

82ZXT
71 510 autocross & 71 510 daily driver