rdh928s

The air pump on my '83 seized. Any ideas on what size belt to use to bypass the pump with a shorter cooling belt? thanks....

John Speake

21" IIRC

Imo000

There was a discussion on this not too long ago. At the end it became apparent that different year 928s have different size fan pulleys so some cases a 19” is the right one and others it’s as big as 21”. Your best bet is to buy one of each, install the one that fits and return the rest. I believe the best belts for this the lawnmower ones, they don’t stretch as much as regular automotive belts.

RDS928S

rdh929s

if you need a air pump I just removed my entire system (86S).
Will sell for cheap.

Rich

bfellows

Rich, PM sent.

ZEUS+

https://rennlist.com/forums/showthre...highlight=belt

JHowell37

For those who have removed theirs, have you had any problems with emissions?

fbarnhill

Hi,
I got rid of mine. Got a 21" belt from Lowes. It was a lawnmower belt but works fine. My pump is like new and you are welcome to it for the cost of shipping if you can use it. It is from a low mileage 79 Euro. I love not having it. There is so much more room now. I removed mine and plugged the pipe going to the opening at the back of the heads.

Best of luck,