Is this slipping clutch, belt slip or tire spin? Help please.

[04RiceEater]

Does not happen all the time but sometimes in 3rd and 4th if I mash the gas it will do this, only around 3-4k rpms then pulls fine to redline. This was in 4th gear.


http://youtu.be/WKR8DdZgJz4

 

[04RiceEater]

Bump

 

[BoostedByV]

Doesn't look like it to me

 

[Mystic03]

sounds like belt slipping

 

[04RiceEater]

Ok, I thought belt slip was only near redline?

 

[04RiceEater]

Yea pretty sure it only happens around 3k then it's fine, if I hit it in 2nd or 3rd around 4k it pulls strong with no slip, I have the steeda 100mm idler, anything else I can do to stop this?

 

[Joes 2003 SVT]

I would like to know also. I have the same problem.

 

[Mystic03]

what size belt and upper are you running with the 100mm

 

[03SonicVert]

Snap a photo of your SC belt tensioner, where the pointer is and post it.
You can go smaller belt most likely but a photo would help.

SV

 

[04RiceEater]

I'm running a 2.81 steeda upper pulley with their idler and belt from American muscle. Whatever the belt size was that's in American muscle is what they sent me and what I'm using but I'll check in the morning and get a picture of it.

 

[Mystic03]

I'm running a 2.81 steeda upper pulley with their idler and belt from American muscle. Whatever the belt size was that's in American muscle is what they sent me and what I'm using but I'll check in the morning and get a picture of it.

I bet you have too big a belt on

 

[04RiceEater]

You might be right, I think it's a 765?

 

[R.D.P.]

Supercharger doesn't know what gear your in. If your getting belt slip it should happen in all gears. The vid isn't that great but my guess would be clutch. Do the rpms surge for a second then "catch" and climb normally? I had a turbo car that did the same thing, 1st/2nd no problems. 3rd and up, when the boost hit, the clutch would slip then catch, of course after a few months it started slipping and not catching lol.

 

[Mystic03]

You might be right, I think it's a 765?

My 2.8/100mm combo I had a 75" belt

 

[04RiceEater]

Hmm ok so I guess I should get a tighter belt then

 

[highcompression]

Looked like clutch to me.

 

[04RiceEater]

It never did it when I had the stock pulley and I just recently changed to the smaller pulley and sometimes get this which makes me think it is belt slip not clutch.

 

[SNK-BITE]

Clutch, If you watch the tach the RPM's shoot up from 3300-3900 as the clutch slips then falls back down to 3700 when it catches.

 

[R.D.P.]

It never did it when I had the stock pulley and I just recently changed to the smaller pulley and sometimes get this which makes me think it is belt slip not clutch.

Or your clutch isn't a fan of the new found power.

 

[Go on 3]

Get the green back from Oreily's. To test the clutch, put in 4th gear and give it 3/4 throttle at 25 MPH. If it is slipping you will be able to tell. If not it will bog. Check the belt, that what it looks like to me.