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On 21 Apr 2002, at 21:52, John Jaranson wrote: > Bearing # MJD Measured > (mm) (mm) > Main #1 54.83 54.88 > Main #2 54.83 54.86 > Main #3 54.83 54.88 > Main #4 39.82 39.87 > > Rod #1 55.84 54.87 > Rod #2 55.84 54.87 > Rod #3 55.84 54.88 > Rod #4 55.84 54.88 > > Cam #1 24.86 24.90 > Cam #2 24.86 24.90 > Cam #3 24.86 24.90 >From Service Without Guesswork, range of acceptable sizes: Crankshaft 1,2,3: 54.97 - 54.99mm 4: 39.98 - 40.00mm rod: 54.98 - 55.00 Camshaft: 24.99 - 25.00mm Your numbers seem low with enough consistency that I wonder about the calibration of your instrument. It's tough to measure to this accuracy. I would think that this amount of undersize might be little problem. A more important question is often how smooth is the journal? Also how round? If it is still both smooth and round, then it is probably fine. You lose significant strength and hardness when grinding undersize, and I think this is often done when it really isn't needed. I don't ever recall worrying about the camshaft journal wear. The limiting factor is always the wear at the crest of the lobe. I frequently reuse cams which show a bit more wear than VW (see the Bentley) recommended. I only did this because I was cheap, but nowdays I'd worry that a new cam would not be of good quality. Did you know that Berg can weld counterweights without grinding the crank? You can send it to them and ask if it is good enough, then get the CWs added if it is, or exchange it for a .010/.010 if it isn't. This is a very good option if you're inclined to go that way. - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Too much? Digest! mailto:type3-d-request@vwtype3.org Subj=subscribe