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Fw: New info


This came from the Vintage VW list...


-----Original Message-----
From: Bentley Wolfe <bwolfe@MACROMEDIA.COM>
To: VintagVW@listproc.sjsu.edu <VintagVW@listproc.sjsu.edu>
Date: Monday, June 22, 1998 10:11 AM
Subject: Fwd: New info


>Some of you may remember that last fall when Don Tucker rebuilt my engine
>it seized after 2000 miles. The engine Don built for his Thing did the same
>exact thing.  We suspected that the shop that did our align-boring may have
>been having problems. However, Don just sent me this email which sheds some
>light on the situation. If you're in the middle of a rebuild it's worth
>reading.
>
>Bentley
>
>
>
>>
>>Hi Bentley
>>
>>I was over at Piston and Plugs on Saturday and got to talking with Glenn
>about
>>my suspicions of bad align boring from Knight's.  He asked when the
problems
>>occurred and when I told him he said their align bore was NOT the problem
>with
>>our engines, nor was the assembly process.  He said that a bad batch of
>bearings
>>came through with the no. 4 bearing having the wrong type of babbit or the
>>babbit was too thick or something.  He had 5 engines in a row do the same
>thing
>>ours did and at least 2 other local shops had the same failures, all fresh
>>rebuilds.  They finally checked the bearings at high temp and found that
>the gap
>>between the bearing and the crank was too small by .001 in.  In the
>engines like
>>ours that ran a while before the seized, the cranks were on the small end
>of the
>>tolerance which gave them a little more gap.  He said that the only
bearings
>>that had the problem were the ones in the yellow cube shaped box, that the
>ones
>>in the blue box were okay.  The last set I used in your engine were in the
>blue
>>box.
>>
>>Glen also said that they had not had the problem since that time.  If you
>are
>>still on the list, you might want to pass this info along, it may keep
>someone
>>else from having the problem.  I'm going to check tonight to see if the
>bearings
>>have a lot number on them, I think I have the boxes, I saved the good
>pieces.
>>If there is a lot number I will get back with you if you want to pass it
>on to
>>the list.
>>
>>Don
>>
>


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