crank and alternator pully install

paradigm9 · 07-14-2006, 07:21 AM

i was wondering if i need to get a different belt when switching to the rsm pulleys and do i need to do a crank re-learn when swapping crank pulleys to the lightened one?

Redog · 07-14-2006, 06:01 PM

No relearn is neccassary.

I'm running the same pullies, stock belt is all you need

paradigm9 · 07-14-2006, 06:48 PM

redog, i have read some earlier posts from quite awhile ago and some people say that the rsm crank pulley can shorten engine life because its too light and can upset the harmonics of the engine. some have said that the ffp underdrive one is better. what have you experienced with the rsm pulleys? will the ffp underdrive vs. the rsm lightened one be equal in revving quickness or effects on the motor.

Redog · 07-14-2006, 08:33 PM

I never heard anything like that. Not saying that it isn't true.

The car does rev a bit quicker and higher under WOT before it hits the shift point.

I noticed a difference the first time at the track, it used to rev upto 3200 in first, after the pulley, i got to 3700 to 3800 before the shift point. That was with an oversize alt pulley, and stock PCM.

I put the DHP PCM 1.0 in the car, although it wasn't needed for pulley.

I talked to my mech today about the car and the timing advance they did. They advacned the timing upto 8 degrees which is when it started pinging, and backed it off to 3 degree above TDC, whcih is the highest the motor would allow