Ac belt slip help !?

[1sikride]

Hey guys.

71 LSA
700hp

Vintage air
kwik performance tensioner.


The pullys for my car are all
4 rib.

The ac pully by kwik
who I guess has a contract
w/ vintage air
is a 6 rib...

so...

under hard throttle i throw my
belt off.

I called kwik. Guy seemed eager
to help...
said couple guys have and this issue..
said look into a shorter belt
or a gm stretchy belt...
best he can do...
wtf...

what other options do I have?

gotta have ac and I obv want
to go up the road sideways...

[dhutton]

Gates has a tool to check pulley alignment. Sounds like they are off. I would swap it out for a cast Holley mount. Mounts made of flat plate can easily flex under load. Not a fan....

https://m.youtube.com/watch?v=s9Jd7i_sIwk

You have a four rib belt on your supercharger? That’s quite small imho...

Don

[1sikride]

No. It’s not an alignment issue...

I’m not understanding why my ac pully
Is 6 rib but the connecting pully is 4.

There’s no guide on the ac pull and the 4rib belt
Jumps or falls off the edge of the pully.

[CSG]

Could it possibly be throwing the belt when you let off the throttle?

[dhutton]

How do you know it is not an alignment issue? Lots of four rib belts running on 6 rib compressor pulleys without issue. It is the most common setup....

Don

[andrewb70]

I live in Alabama and I don't have AC...You're in Canada...YOu need AC when it is 70 degrees? I know...not helpful...Carry on...

My bets are on a pullet misalignment.

Andrew

[1sikride]

Ok fair. It could be misalignment..

The way I was lead to believe was
Bc of the 6 rib to 4rib plus the
Power of the set up....

I will look into that.
Took is pricy. Is it common to
Rent these?

Thx guys

[dhutton]

Buy the tool and then sell it on eBay when you are done.

Don