So my truck loves to throw bolt the serp and AC belt when I have the truck on the high boost setting.
my high boost is 24lbs
low boost is 15lbs
so I don’t really have the issue on low boost
but on high boost it will throw the belts
I have a brand new AC delco tensioner for both belts and brand new belts for both!
the SERP belt is actually the size for the 105 amp alt so it’s a tight fit
and it still gets thrown off
does any ones else have an issue with throwing belts with a turbo set up?

 

Are your pulleys perfectly aligned? This and crank pinning is what causes it.

The AC belt you can convert to a 2008 belt that doesn’t use the tensioner.

 

I have Oreilly auto parts getting me a stecth fit belt!
ill try that
and as far as alignment, everything is stock and should be good! But that doesn’t mean **** lol! I had a alignment tool on it and it seemed fine. But I still have the issue

 

Is your crank pinned? That WILL cause it also.

 

Put a gopro under the hood and watch it

 

next time I’m out messing around I’ll throw the GP under the hood to watch what is happening

 

crank is Not pinned! Didn’t think I would have to do that since it’s a turbo truck and not blower

 

Not to highjack this thread, but can you explain how the crank pinning causes this? I only ask because I am having a similar issue. I have a 6.0L with a whipple, with a pinned crank, and I am having trouble with the belt. Every time I go WOT it tosses the belt. It starting to drive me mad. I have tried a couple different belts to no avail. I could really use a solution.

 

You need to make sure your pullies are aligned properly

 

I have this issue intermittent on my setup as well when going full tilt. All pulleys aligned. Crank is pinned.

Tried various belts, new tensioner, etc. Haven't found solution, so I took AC belt off this week because it's getting cooler out.

Another member said he had an extra groove machines closer to his main belt and it hasn't hopped since. I have IW OD crank pulley so not interested in that.