My 3L220 yoohoo belt is slipping and making an awful noise, but only at idle. As soon as I touch the gas, it goes away. Has anyone tried using a slighty tighter belt? It seems a little on the loose side.

Conway

 

It stretched so bad on mine it was unusable. I think the best way to fix this is to run a double pulley on the alternator or add a tensioner pulley to replace the air pump for a second belt.

 

Installed a yoohoo belt on an engine I rebuilt. It wasn't a 3L220 (fractional HP), but a real automotive V belt. It is still doing OK. Mainly because the V matches the pulley sheave. It's like 22 1/8", but the wide V makes up for the extra 1/8th" length. Infact, if it wasn't an 1/8th longer, it probably wouldn't work very well (it'd be too tight).

If you're interested in trying a real V belt, I could go look up the Napa part number for you.

 

I could really use that V belt as well.

I'd apreciate it if you could look up the Napa Part number, thanks alot!

-Matt

 

i wouldn't mind getting that part number either...
thanks, jeff

 

I'd like one too for my FB. Although I live in Canada, we have U.A.P. instead of N.A.P.A. but they can cross reference the #,s I,m sure. nipper@onlink.net

 

The part number is 7215

Here is a thread that I posted some info in, as I understand it, of how the yoohoo belt actually works.
https://www.rx7club.com/forum/showth...hreadid=190549
Just scroll down untill you see the long post.