What are these P/C
 

Found these in a barn with a lot of other stuff. Any ideas on what they are? What's the best way to clean them up? My diesel-purple parts cleaner is great for steel and Al, but Mg not so much.

http://forums.pelicanparts.com/uploa...1263151496.jpg

http://forums.pelicanparts.com/uploa...1263151520.jpg

with out the numbers inside the piston, they look like 80mm 2.0S 67/68
Bruce

pistons look like 67-68 S to me.

Shaun

Look inside the dome for the Mahle P/N

I'll bet 67-68S with Aaron (80P5E)

I use soda blasting for pistons and outside of the cylinders. I use scotchbrite hone as the first step in cleaning the inside bores of the cylinders.

Use this reference as a guide

http://forums.pelicanparts.com/uploa...1263158787.jpg

Here's the 67-68S 2.0S piston

http://forums.pelicanparts.com/uploa...1263163738.jpg


http://forums.pelicanparts.com/uploa...1263163794.jpg

thanks guys, a few pics. they all have the E (maybe a Mahle logo?) on the inside and -1 on the crown. Haven't gone through them thoroughly, one face is badly pitted and here's a broken skirt, but they might be usable to someone when what they are is nailed down. they are 80mm.

http://forums.pelicanparts.com/uploa...1263174617.jpg

http://forums.pelicanparts.com/uploa...1263174636.jpg

http://forums.pelicanparts.com/uploa...1263174652.jpg

Here are pics of 2 of the pistons with best stamping on the crown.

http://forums.pelicanparts.com/uploa...1263248151.jpg

http://forums.pelicanparts.com/uploa...1263248165.jpg

http://forums.pelicanparts.com/uploa...1263248178.jpg

http://forums.pelicanparts.com/uploa...1263248191.jpg

http://forums.pelicanparts.com/uploa...1263248205.jpg

Woops wrong thread