ShopTalk Forums | Aircooled VW Tech & Restoration Help

I just removed my original crank pulley and installed a 7" Aluminum degree pulley. I cannot get the original Metric Belt to it's right tension. I shifted all the shims on the generator pulley but had no success in getting the belt back to the right tension. I did notice the degree pulley has a wider and deeper grove. Anyone know what belt I need. A belt number would be a big help.

Also the Bentley says 29 to 36 Ftp on the steel pulley. I torqued the aluminum to 40.

The later wider belt is 11.3x912.

I just had a new (used) motor put in my rail. It has a stock diameter aluminum crank pulley and alternator. The belt that is installed is a 11.3 X 912.

Is this the belt number I need for the Generator, I am not running a Alternator. Thanks!

Lew wrote:Is this the belt number I need for the Generator, I am not running a Alternator. Thanks!

Lew that is the width and length of the belt he is running I'll see if I can get a part # for ya.

The belt that is installed is a 11.3 X 912.

http://www.azbaja.com/ForumsPro/viewtopic/p=57389.html wrote: I measured the outside diameter of my pulley and it is 6 3/4". I did find a number on the belt that is currently installed:
11.3 X 912 and I guess the belt PN: 9730798

73-77, Spr 73-79, Ghia 73-74 Alternator Belt, 11.3 x 912 mm

I called Napa with the belt dimensions and they only offer it in off brand and have to order it.
Advance has it for a 3/8 belt groove stock size pulley part # 15355
And for a 7/16 belt groove stock size pulley part # 15358
GATES Part # 7355 {High Capacity V-Belt (Standard); HC41 13/32" x 36 1/8"}

Lew wrote:Fan Belts for after Market Crank Pulley's, Etc.

Awesome link. Added to Sticky in Newbie Forum.