Nissan 370Z Forum - View Single Post

2011 Nismo#91 · 10-24-2017, 08:22 AM

I really can't see how pulleys could be worth the hassle. The AC disengages itself when you are full throttle, the alternator is only putting out the power you need from it which isn't much, and the PS pump can't be more then a few HP total. Running a 15% under-drive would save barely 1HP which then needs to go through the drive line losses. It would be more effective both cost and performance wise to throw out the spare tire and get a AAA gold membership. In the past, like 40 years ago when you had a lot more running on the belt that were inefficient and with a lower power engine (210HP V8) to start it was beneficial for using an under-drive for a small but noticeable performance boost.

Now if you have done every possible thing else to improve performance, then maybe consider installing it.

10-24-2017, 08:22 AM	#5 (permalink)
2011 Nismo#91 A True Z Fanatic Join Date: Mar 2011 Location: NJ Posts: 2,383 Drives: slowly Rep Power: 37213	I really can't see how pulleys could be worth the hassle. The AC disengages itself when you are full throttle, the alternator is only putting out the power you need from it which isn't much, and the PS pump can't be more then a few HP total. Running a 15% under-drive would save barely 1HP which then needs to go through the drive line losses. It would be more effective both cost and performance wise to throw out the spare tire and get a AAA gold membership. In the past, like 40 years ago when you had a lot more running on the belt that were inefficient and with a lower power engine (210HP V8) to start it was beneficial for using an under-drive for a small but noticeable performance boost. Now if you have done every possible thing else to improve performance, then maybe consider installing it. __________________ GTR TT 493Whp/431lbft, Ecutek, Southbend 6puck,Quaife, RPM RollBar 4Point, R888R, JRZ RSPro F(10R/10C) R(10R/6C) 1000f500r inlbs+150inlbs Tender, SPL everywhere.Full Specs