Nissan 370Z Forum - Turtle64b's Stillen Build Thread

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Quote:

Originally Posted by redondoaveb (Post 3912543)

Yeah, I know stock pulleys are 3.2/3.2. I was wondering why you went smaller (3.15) instead of larger on the jackshaft.

Have you tried the the rpm belt?

I gotcha, my bad. Vortech doesn't offer the high traction in 3.2. 3.15 is the biggest. I have the Vortech bearings in the SC, so I'm not ready to overspin for the moon quite yet haha. Long-term, if I stay supercharged, I want to shift to a bigger blower like the Vortech V-7 JT-B that can spin faster and give more flow. If the SC fails, I'll likely send it to 928 for bearings but keep the Si impeller unless the 928 impeller flows better.

RPM belts are on the way. The last one I had got eaten pretty quickly when the pulley failed.

Quote:

Originally Posted by turtle64b (Post 3912548)

Now I see what you did. That makes sense. The JT-B is a great choice, that'll be my next upgrade. Keep the Si impeller, I found that the Si brings in boost quicker than the 928.

I've had great luck with the rpm belt. No slipping even with smooth pulleys.