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posted on February 2nd, 2011 at 02:56 PM
Main Bearings
Guys
Do Beetke 1300/1600 engines have two different size main bearings.
I just recieved my new crank and went to dummy up the short and the main bearings have a smaller external diameter than the case. So for example,
when you stick in the rear main/thrust bearing, it is really loose in the case and it can slide backwards and forwards in the case as well. By about 1
mm.
On the packet it has HL 87 978 600 std Suit VW 1300, 1500, 1600, 1700 A AR.
Does anyone know whats going on.
Thanks Trev
clinker42
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posted on February 2nd, 2011 at 03:38 PM
I should also add.
I just measured the case.
The case bearing dia is 66mm. Bearings I have measure 65.05
The case thrust bearing width is 20.90 and the bearing thrust width is 21.94
So i take it from this info is that instead of the std/std bearings I have now, I need 1mm/std bearings.
dogo
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posted on February 2nd, 2011 at 04:45 PM
You need oversize bearings with oversize thrust so it can be machined down to suit your case. Determining the correct size requires proper
measurement.
