Yes, the grinding noise is attributed to a loose cog belt. I used to keep my super tight and it would be very quiet, but eventually it broke the pulley right off the blower. So I deal with a little rattle now.

 

Nice to see you post, Nark...I want your TS bumper!

 

You'll like it even more when you see a gaping APS intercooler behind it.

can't wait. mid may. stay tuned. (no pun intended)

 

what are doinyour voretch setup? I might have interested parties.

 

Randy how much you looking to spend?

 

I sold my vortech before I even removed it.. heh

 

It's really important to keep the cog belt as loose as possible without any slipping (jumping teeth). This will actually create the least noise although a low idle vibration is unavoidable. The worst thing you can do is overtighten the belt which will destroy the pulley bearings. It's also unnecessary because the idler pulley that pushes the cog belt down creates a very large contact area between the belt and the two cog pulleys--so there will be absolutely no slipping unless the teeth jump. My idler pulley is touching so lightly that I can easily turn it with one finger. That's about 1/2" of play in the cog belt up and down (total 1").

Call Vortech about this if you don't believe me.

The way to do the adjustment is to put a 19mm open end wrench on the large nut towards the front of the idler and a 17mm box end on the smaller bolt end. Loosen the bolt with the engine idling and slowly push down on the pulley with both wrenches to tune out the coarse vibration of a loose belt but before you hear a grinding sound (too tight)--there's a sweet spot. Tighten it there. Then, put a few drops of red Locktite on the remaining threads of the bolt in front of the nut to keep things from loosening. You should never have to adjust this again because the belt is under low tension and won't stretch.

What ever you do, do not overtighten this belt!!!

 

LOCK-TITE? How will you change the cog belt in the future? I haven't confirmed, but I thought the bolt that holds that assembly together had a lock washer? I agree with the rest of the post, though. Mine has about a 1/2 " of play up and down and the sound was quieter.

 

Putting out feelers right now. I'm not sure what a used one would go for. $500? Cuz i still have to get it painted and crap like that. Why? You have another one? If you did, how much would you sell after painting it DG yourself?

 

The red LockTite is applied to the threads BEHIND the nut just to keep it from backing off. There is absolutely no difficulty loosening the bolt with a wrench--just keeps it nice and tight. Frankly, because there is so little pressure on the idler pulley, it isn't really necessary to LockTite.