New belt for smaller pulley?

[CornM3]

Hey guys,

So I’m wondering if I need a smaller belt if I drop my supercharger pulley size, I’m using a 95mm and going to drop to 90mm, will I need a new belt for that 5mm difference?

Any info will help, thank you.

[CornM3]

Anyone? I’m sure someone has dropped a supercharger pulley size in here. Just don’t want no belt slippage.

[msan]

I think you'd be losing about ~4-6mm of length. Might be enough to cause the need for a new belt or else it will be too loose.

[CornM3]

Originally Posted by msan

I think you'd be losing about ~4-6mm of length. Might be enough to cause the need for a new belt or else it will be too loose.

That’s what I was thinking I’m just not sure how much smaller on the belt I should go.

[Scrippy]

Yes