Fortune has smiled on me.  The 84k engine had a Mahle 93 97 piston with the
- mark that weighed in at 1# 8.0 oz/680.39 grams, it was the first one I
pulled out from the side where the head and cylinder was already removed.

I'll put the cylinders on our surface plate and see how much deviation there
may be in height.

Joe

-----Original Message-----
From: Joe Luther [mailto:jluther@alfons-haar.us]
Sent: Wednesday, February 23, 2011 9:53 AM
To: 'vanagon@GERRY.VANAGON.COM'
Subject: RE: air cooled piston weight/cylinder question

I got a chance to weigh the piston/wrist pin assemblies on our digital
postal scales here at work, they are accurate to .1 oz. The wrist pins are
rather tight to the pistons at the moment so I decided to weigh them with
the piston since they will move with the piston anyway.

The KS piston I thought should be heaviest because of the "+" on top
actually turned out to be the lightest by a large amount.

Here are the weights converted to grams -

Mahle pistons marked with 93 97 - :
677.55 (1# 7.9 oz)
680.39 (1# 8.0 oz)
686.05 (1# 8.2 oz)

KS piston marked with 93 98 + :
660.55 (1# 7.3 oz)

Just goes to show that what you see isn't always what you've got.  I've
really wondered if someone worked the top of that piston a little, it looks
very different under the scope than the others from a surface finish
perspective.

The other engine has 2 cylinders removed due to the head problems, maybe one
of those pistons is a match for the other Mahles.  Hopefully I'll get a
chance to look some evening this week.

Joe