BrunoTheMellow

Installing my Procharger today. 2015 z51 manual.I cannot get the Belt on. Tensioner all the way off. Idler off. Belt on. can't get idler back on. Belt says 8PK1105. Did I get the Wrong belt ???

Any help is greatly appreciated.

BrunoTheMellow

Also, does the wet sump model have a different Belt size. or maybe 2014? I asked someone else with a kit and his belt is 8PK1145

blown81bu

u have the wrong belt...
the belt is indeed the 8PK1145 in turn is longer
that belt works on 4.5-4.75" pulleys perfectly

BrunoTheMellow

Thanks. I got lucky and O'Reillys found one and is getting it to me today.

That's so frustrating, we tried and tried, it's just short enough that it fits but super tight. I have to cut the old one to get it off , it's as tight as a belt should be after its been tensioned. But I got no idler on it and the tensioner is all the way loose. no way I'm taking the whole supercharger bracket off again to pull that belt.

BrunoTheMellow

Well, just got off the phone with procharger tech support. Apparently the 8PK1105 belt is correct for 2015 models (difference being the tensioner bracket). I don't know how because there is no way that would fit. I mean, absolutely no way without tensioning anything at all and without the idler.

Also, I have a 4.25 pulley if I remember correctly.

Anyhow I do have some belt slip in 3rd gear with the 1145, but I am fairly certain I didn't tension it properly. I was told to turn the collar unil the bolt is flush with the top of the collar, I didn't do that

The manual was not very helping and says to "match up marks on tensioner body", there is nothing to match them to. I guess this belt has to basically be guitar string tight ha. I'll tighten it today.

Still in 1st and 2nd gear test runs.

BrunoTheMellow

Still had some small amount of slip in 3rd at 5k rpm with the tensioner collar flush with the top of the stud. Pushed it another 1/4 inch down. Almost bottomned out on the adjustment. There's no way it will slip now. Hopefully it will last.