Its become obvious that I have an alignment problem. I've gone through several belts...and even the ones that last usually lose a rib.

Belts always hop off "away" from the engine. When I lose a rib or have a belt come off, it comes of on the supercharger side of the pully.

Now, I don't know that its the SC pully that's the culprit. It could be the alternator or idler pully as well. Any way to tell? Eyeballing it isn't all that exact.

Assuming it is the SC pully...is the pully too close to the engine, which is why the belt comes off on the SC side, or the other way around?

Any issue with using a washer in the SC input shaft (vibrations)?

Thanks guys!

 

I had that problem with my first blower. You have all your top bolts right? I was missing three bolts to include that long m6 65mm bolt. That was one of the key bolts. When I installed my blower I would always tighten the top bolts first and then the bottom ones. You shimmed it with washers you said right?




Thanks for the cooler I got it along time ago. Sorry for not getting back to you earlier.

 

Try a 5 RIB Belt. Alternate between running the SC Pulley belt adjustment inboard with the lower pulleys belt adjustment outboard, and if that runs off do the reverse. Keep checking the belt for the first sign of being off track. The one rib variance will be about equal to 1/8 inch.

The Stillen supplied pulleys need to be replaced with ACT or some better quality pulley material and bearing. Upgrading your bearings (if not already done should help alot).

I gave up on my SC and just had it removed.

The steps mentioned above helped, but there were to many problems (and to much money spent).

Good Luck.

 

I had that happen a year ago. What's happening is that the blower needs to be shifted away from the motor a tiny bit. To achieve that I have 3 washers spread out evenly in a triangular pattern where the mounting plate meets the blower.

 

So you put the washers in between the plate and blower? I didn't think of that...I would have put them between the plate and timing cover, which would have been a PITA.

Thanks!

 

Hey ejj,
I have mine between the blower and the plate. I discovered the washers when I took it apart when I switched out the pulley.
This is how I reasoned it out: since the belt wants to "jump" away from the engine means that the belt wants to stay in a natural alignment and so adding the washers would move the blower away from the engine and bring it into alignment with the idler and tensioner pulleys.

 

I have that SAME exact problem, im still on my first belt with 1 rib shredded for the past 3 months, haven't had time to fix it but it seems as though that 1 rib towards the s/c side was shaved right off. Seems to be running fine now just need a new belt, thank god for the gatorback.

 

Lousy part of it is that the shredded rib also puts a nice big hole in the hood liner. Now I have to figure out how to cover that hole or else remove the liner altogether.

 

I don't have any liner with the CF hood.

 

Ok guys. This past weekend I put a new belt on the SCer and spaced it away from the engine with washers.

Alignment on the SC pully is perfect. However, its become VERY clear that the problem is my alternator. If you're looking at the pully from the passenger side of the car...

- 12 o'clock on the pully is closer to the timing chain cover than 6 o'clock.
- 3 o'clock is closer to the timing chain cover than 9 o'clock.

The alternator is installed securly...its not like I'm leaving bolts out. Its from a 95 and in my 99...not that I should make a difference.

I can't picture how I would shim the alternator to fix this alignment....should I get a different one and hope its a defect in this one?

 

I think the SC pulley is to far away from the engine. that's why it is hopping off away from the engine. If it is too close to the engine, it will jump a rib towards the engine and the belt will grind against the engine. in your case, I would try to add a washer between the SC pulley and the shaft.

 

I'm having the same problem myself right now. From my observations, mine seems to need to be pushed away from the engine. I can tell you tomorrow if that works or not.

 

Guys, check the dates on the posts. I've solved the original one and moved to the one I just quoted.

 

I have had these problems! It looks as if the alternator is pulling the belt off. The belt would keep coming offf the s/c side and it would start at the alternator. Replaced the idler and tensioner pulley and the prob was solved. Just for the hell of it I tried an idler pulley with no flanges and that did not work at all. There was an obvious dif between the 76mm w/out flanges and the one with. Clearly the one with flanges got the job done.

Another prob I had was the belt jumping a rib towards the engine side. Now I dont know if the belt dressing had any part in this because I would use that some times a little too much but after a few thousands miles my belt would just hop a rib. Luckily I caught it before any damage was done to the belt and just tighten the tensioner. Some how the belt would come lose enough to do this. This is on a v1. Just something to check...

 

I don't see how the tensioner and idler pullies could be causing my problem.

The belt is "happy" on the SC, Crank and AC pully right now...but is off on the alternator pully by 2 ribs! Its not even close...and its not like I can shim it out...I'd need to grind down the ears on the alternator, and I'm not even sure that would work.

 

I don't know if this will help you any ejj, but here's a post from Stephen Max concerning problems with the belt around the alternator:



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