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 Blocks / Cranks/ Rods and Pistons
 Reusing Wrist Pins
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CRM318
Tribal Scout

USA
30 Posts

Posted - 06 May 2014 :  09:55:16 AM  Show Profile  Reply with Quote
Is reusing wrist pins an option? I Will be tearing down my 1970 YS 400 that has the crappy 8 valve relief pistons and will be getting new ones. I have never had to go the new piston route and wanted to know if i could do that.

1970 Pontiac GTO, Atoll Blue, 400, TH400, 3.73 Safe T Track

cortcomp
Coyote

USA
5335 Posts

Posted - 06 May 2014 :  11:24:19 AM  Show Profile  Visit cortcomp's Homepage  Reply with Quote
I think wrist pins will come with the new pistons?
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bigD
Indian Spirit

USA
643 Posts

Posted - 06 May 2014 :  11:56:06 AM  Show Profile  Reply with Quote
quote:
Originally posted by cortcomp

I think wrist pins will come with the new pistons?



Unless you order custom Ross pistons. They are about $675 + freight without pins.
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Bill Boyle
Horse Feathers (Charter Member)

USA
4794 Posts

Posted - 06 May 2014 :  11:58:17 AM  Show Profile  Visit Bill Boyle's Homepage  Reply with Quote
No, don't reuse wrist pins. When you order a piston set, they will come with wrist pins that supposedly fit the pistons and the small end of the connecting rod. On occasion one or two pins may be too small, or two large to be used. The diameters of piston holes, pins and the small end need to be paired up as well as the can be. This means measuring and pairing. If a wrist pin is off, get a replacement that fits.

Assembly of press fit wrist pins is best left to your machine shop. They typically have a heating machine that is more consistent that trying to wing this at home.

Check out this short 15 second youtube video.

http://www.youtube.com/watch?v=7eTU3tyniJc

"Dedicated to keeping the classic Pontiac engine alive."

----
400 bored +.030, forged TRW pistons, ported 62 heads, Hedman headers, 2.5 SS dual exhaust X Pypes, Comp 276AH10 cam, Scorpion 1.65 RR, 850 Q-jet, stock intake & tuned HEI; original owner.
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CRM318
Tribal Scout

USA
30 Posts

Posted - 06 May 2014 :  1:05:08 PM  Show Profile  Reply with Quote
That's really cool. Thanks for the info guys.

1970 Pontiac GTO, Atoll Blue, 400, TH400, 3.73 Safe T Track
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bnorris_74
Crazy Horse

USA
1442 Posts

Posted - 06 Jul 2014 :  07:11:07 AM  Show Profile  Reply with Quote
TTT
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