I just picked up my car from the shop. I had a new belt put on and had the lighten crank pulley put on again for the third time. I noticed that my car doesn't hit 18psi any more or very rarely only 15psi. I can hear the belt slipping and squeaking under full load. I want to know the perfect and best belt to use for my set up Alta 17% s/c pulley and M7 2% crank pulley. I thought I read somewhere the best was a Gatorback or something. I also need the measurments.
M

 

your makin me worry about my 19% thats on the way!!! I hope you get it figured out but damn man.

 

You must be following some of my threads. Before I took the car in this last time the car was driving great and making great power. Now this new belt is f*cking up. It almost feels like the shop changed my 2% crank pulley to a 0%.
I'm sick of all this.

 

yeah i have been keepin an eye on your other posts. bums me out that all that stuff is going down. hope you get it workin soon.

 

Thank you for your support. Like I have said before, I guess I'm just the .01% that has had problems with a crank pulley.

 

on a totally off topic note, I lived in Santa Barbara for 3 years and miss it dearly! I would make trips to ventura everyday after school to surf.

 

Not sure where you live now, but if its close you should come to Ventura and we can grap some lunch.
M

 

that would be a hell of a drive........I live in south carolina now.

 

the gates 6PK 1374 JCW belt should work fine with the 17% & 2%.
look to see if the M7 CP is installed it is engraved on it 2%. the only black 0% CP is th alta.
- john

 

also maybe you should try the alta altanator pully designed for the oversized crank pullies. it may help with the slpiing issue??
-john

 

also maybe you should try the alta altanator pully designed for the oversized crank pullies. it may help with the slpiing issue??
-john

 

Curious to know how the Alta Alternator would help with this problem. My understanding is that it helps the alternator to return to normal RPM, from the over spining that it is doing due to the smaller pulley at the SC. It is 5% oversized to let the alternator spin at the speed it was designed to work at, avoiding electrical issues. Am I wrong on this or missing something? Thanks.

Bomboasy

 

better belt wrap with larger alt pulley.

 

Get a Goodyear Gatorback belt.