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TO13 belt too tight

90volvo

Active member
Joined
May 27, 2017
Location
Eldorado Springs Mo.
Im kinda stuck, I had head milled quite a bit. Factory belt is way to loose. So I ordered the T013 vw bet. I got it on but it was a fight; it was so tight I could play a tune on it. So I pulled it off. Back to square one, anybody out there find an answer? Or someone make me a bushing to press on the bearing. No machine shops around here. Thanks in advance for any help.
 

shoestring

Active member
Joined
Jun 20, 2009
Location
Swampscott, 01907
T013 is the correct number belt. I've found that the tensioner pulley bearings can have different size holes in them, and from what you're describing, you want a LARGER hole to allow more adjustment to allow use of either belt. I don't know how to determine which bearing might have a bigger i.d., it's probably a difference in manufacturers, not in application. I would presume the factory one would be bigger?

I can also tell you that I had to walk the T013 onto my cam pulley. The head was milled 2.3mm, with a 0.036" head gasket. When I released the tensioner bearing, it did move away from bottomed out, but only barely.
 

90volvo

Active member
Joined
May 27, 2017
Location
Eldorado Springs Mo.
tried it

I have few of those bearings laying around. I have the largest I.D. on it. Maybe a stepped stud that steps down on size? I had a piece of exhaust pipe on it to get me by, it pressed on and I tack welded it in a few spots. Well that didnt last long, welds broke loose and ex. pipe would spin etc.

The T013 was so tight it was pulling the dowel pin out and it bent the stud that holds the tensioner on.
 

OVERDRIVE

Member
Joined
Jul 31, 2017
Location
Brooklyn, Neu York
Volvo recommends that you re-tension the belt at 600-1200 miles, if it's tight now but could at least be installed, it may break in. You could probably also take out the tensioner stud and turn it down where the tensioner sits but not the whole shaft, I'm guessing you only need a few thousandths.
 
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