MTFCA Forum

These pistons came out of motor that was rebuilt in the 60’s. No identifying makes other than “184” on the inside lip. Has strange relief around the wrist pins. Should I reuse them?
Tom

How are the boars? What size are they? How did the car run before taking it down? Don't know who made them, but look to be somewhere between the cast iron and modern aluminum pistons weight wise. Cant tell from the photos, are the rings the larger 1/4" type or narrower? If narrower might want to make sure they are a size that can be found. While others will differ, if everything fits good, I would go ahead and used them. How you drive and how much you drive your car may or may not come into the picture.

Look like Jahn's pistons

Not Jahns- they never made a split skirt piston- T slot yes, split skirt-no. Those are pretty crude castings even by Jahns standards. Also the side reliefs are not typical of a Jahns. Hope that helps.

Check your piston pin clearance. Just had an engine in here with same piston, piston pin holes were worn bad. Dan