Belt slip problem

[xxjaymanzxx]

Anyone have any experience with fixing belt slip with a stock lower and 2.8 upper on a whipple

 

[roy_1031]

Do you have the proper sized belt? What belt tensioner are you using? Maybe try a non slip upper pulley?


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[xxjaymanzxx]

Yes I have the smallest belt that will fit... Stock tensioner with 100mm idler

 

[whitedevil95]

I have the same set up. No slip here. Carries 17.5psi to redline

Edit:
My Pulley is a Reichard Racing 2.8 that has some real grip
I run the full Billetflow 4 piece idler set
Stock tensioner
Gates HD Green Belt.

 

[xxjaymanzxx]

I bet that pulley helps a lot I wish I could find one for sale if not then I think I'm gonna have to do a 3.0 upper 2lb lower

 

[cj428mach]

You should be able to hold that 2.8" upper.

The best solution is a bigger lower if you aren't concerned with running one.

 

[ITSTOCK]

3 100mm idlers, 1 92mm idler, billetflow snub, stock lower, stock 30k mile tensioner, 2.6 pulley/22-23 pounds of boost and zero belt slip to 6700rpm.

What is your current setup and are you POSITIVE that you have the tightest fitting belt?

 

[xxjaymanzxx]

I have stock tensioner, stock idlers/pulleys, 2.9 whipple with 2.8" whipple pulley and billetflow 100mm snub idler and a Napa micro v belt... The next belt size down wouldn't go on I tried

 

[ITSTOCK]

Do yourself a favor and get idlers before your stock ones "explode", and see if that helps with slip. You shouldn't be getting slip with a 2.8.

 

[Bdubbs]

I have stock tensioner, stock idlers/pulleys, 2.9 whipple with 2.8" whipple pulley and billetflow 100mm snub idler and a Napa micro v belt... The next belt size down wouldn't go on I tried

How are you attempting to put on the belt? The best way in doing this is first removing the 100mm auxiliary idler. Then put the belt on. Next take all tension off by using breaker bar on tensioner. Lastly (with tension still off) try sliding the 100mm auxiliary idler pulley back on.

Just a thought if you haven't tried yet.

 

[xxjaymanzxx]

Ik I deff need idlers that's on the list... And thanks for that info bdubbs I'll have to try that and see if it works

 

[ITSTOCK]

I learned that it should be a battle to get the right belt on if you don't want slip. So if you didn't sweat when you put the belt on, its too big.

 

[c6zhombre]

I learned that it should be a battle to get the right belt on if you don't want slip. So if you didn't sweat when you put the belt on, its too big.

it's actually the easiest thing in the world of belts n cars....but you need that sliding whipple adjustable tensioner to see the light.

2.6" upper here with factory lower, 22psi zero belt slip for years with a factory sized 75" belt. Did I mention it's such a slick invention...you can reuse that exact same 75" belt with a 3.0" upper for your 18psi pump gas tune? LOL

if you can find it, buy it. Might be vaporware by now, however. Keep checking the market, jumop on it if you can

 

[whitedevil95]

How are you attempting to put on the belt? The best way in doing this is first removing the 100mm auxiliary idler. Then put the belt on. Next take all tension off by using breaker bar on tensioner. Lastly (with tension still off) try sliding the 100mm auxiliary idler pulley back on.

Just a thought if you haven't tried yet.

Thats how i do mine.