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On 30 Jul 2002, at 22:34, Cool43whip@aol.com wrote: > I have been building a budget 1641 for my square. I picked up a set > of lightly used (1,000 mi) 87 mm pistons and cylinders from a friend. Upon > installation I encountered a problem. Problem # 1 is that these sound like they are "drop in" piston/cylinders. They have a very thin wall and will not wear well. There is a very good chance that with 1000 miles on them they are worn out. > Cylinders 3 + 4 installed fine with the script (on the crown) > upright and the arrow pointing toward the flywheel. Cylinders 1+2 on the > other hand, would have the script upside down if I were to install them with > the arrow pointing toward the flywheel. There is some slight wear marks on > the bottom of the pistons which indicate that this would be an improper > installation, plus I imagine they would "slap" if the offset of the wristpin > were upside down. Apparently I have a mismatch set of pistons, and I haven't > been able to contact the seller. The important thing is to get the piston pin offset right. I can never remember how that is supposed to go, however. It seems clear that one of these needs to go on backwards, but you might even have some that have no offset. I understand that some cheap sets have come at times with zero offset. - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------ To unsubscribe, E-mail to: <type3-off@vwtype3.org> For more help, see http://vwtype3.org/list/