risaac928

Okay fourm, my air pump/smog pump locked up so now the fan is inop. What is the best way to attack this.

Invest in a new/used air pump/smog pump?

Rebuild the pump?

Or invest in a electric fan for the radiator?

What are your thoughts?

Abby Normal

Get rid of the air pump and use a differnt size belt to run fan..did this on my turbo.

risaac928

I dont understand? What pully am I going to use to run the fan...?

Abby Normal

AAn 82 might be different but I used the same pully right off the crank that used to run pump and fan.. Just get rid of the pump and use a different size belt

Landseer

Plenty of posts about it right here. Search. Green belt. Lawnmower belt. Airpump delete. etc.

jwillman

The belt will run vertical from the crank pulley up to the belt driven fan. Use a shorter belt, 20 or 21". You will not have a tension adjuster anymore so you will need to unbolt the fan at the mount bracket to install the shorter belt.

risaac928

Thanks guys, thats. jwillman, I was thinking the same thing too. But I asking myself how am I going to get that belt on much less to besure that its tight. So ou think a 20 or 21" should do the trick? I will post a video in just a few....

risaac928

http://www.youtube.com/watch?v=oaM_WsBNHGY

Abby Normal

I can give you the part number in the morning as I have the cover the belt came with at my shop.

jwillman

I just got my belt from Roger. He had me measure the OD of the fan pulley. Mine was 4 1/8" and what he sent me was a 21 inch Gates 6821 belt. My crank pulley was just under 4" OD.

I have read the best way to do this is remove one upper and the lower bolt and loosen the other upper. That allows the fan to rotate to allow you to install the belt and then it is just a matter of rotating back up to install the 1 bolt you pulled.

Jim

risaac928

Got it all done guys. So, paid under $7.00 for the belt. I picked up the belt from my local Oriley's Auto parts. I picked up the Gates Truflex Belt 20in. Part 1200...Industry Number 3L200 for Equipment 6720 (Whatever that means) UPC 0 72053 00099 3.

It was a perfect fit, Not too tight or lose, easy to put on....Thanks 928 Team

1979 SC

I just bought a 1979 SC and the Air/smog pump is non functional. Can someone advise? I live in California.
1. Should I buy new from manufacturer and install?
2. Try to find a rebuilt one or used one on this site?
3. Will the smog check absolutely fail without this part or can I pass the smog check without the pump as long as the engine is hot?


Thanks for any tips!

Jim Devine

In California with the pump removed you will fail the visual inspection no matter what the pipe reading is unless you luck out and get a smog guy that looks the other way.

RennPartsDirect

How is that Gates belt holding up for those that have done this conversion? The belt is rated for only up to 17 HP. Are there no issues with this since its just driving the fan?

ROG100

I have sold hundreds of them and not heard of one single issue.