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1931 Panther piston mod

PostPosted: Mon Dec 10, 2012 11:16 pm
by Ray Roberts #115
Warning: Don't try this at home. I told Rick Yates I think I found a piston that just might work or not...
I bet Dave King has done something like this before, well I hope he has.

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Re: 1931 Panther piston mod

PostPosted: Tue Dec 11, 2012 6:54 pm
by maxpat82
a bolt on extension?
what kind of graded bolt are you using?
locking compound for the bolt? Can't think of any locktite high temperature enough.

Re: 1931 Panther piston mod

PostPosted: Tue Dec 11, 2012 8:07 pm
by Ashton Bond
Two piece diesel pistons survive every day for thousands of hours...

Re: 1931 Panther piston mod

PostPosted: Tue Dec 11, 2012 10:08 pm
by maxpat82
ahh ok.. didn't know that.
will sleep smarter tonight..hehe

Re: 1931 Panther piston mod

PostPosted: Tue Dec 11, 2012 10:33 pm
by Ray Roberts #115
I didn't know diesel pistons were 2 piece, I feel better already.
The Panther doesn't rev very high being a long stroke 500 single.
The bolts are just grade 8 1/4 20 cap screws and I am using red loctite 450 deg and the 1/2 inch diameter post goes through the new piston and is peened over, I was going to weld it but I thought weld could crack so I riveted it.

Re: 1931 Panther piston mod

PostPosted: Fri Dec 14, 2012 9:01 pm
by Dave King
Good job Ray, looks like something out my past. Have you thought of moving the top compression ring up onto the extension ?

Re: 1931 Panther piston mod

PostPosted: Sat Dec 15, 2012 9:40 pm
by Ray Roberts #115
I did think about that Dave but then thought whats the point? since those pictures I did machine a few narrow grooves in the upper part.
Ray.