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Floating Doc (Forum Supporter)
Floating Doc (Forum Supporter) GRM+ Memberand UltimaDork
1/7/24 10:09 p.m.

I don't think I can use this one. 
 

The piston appears fine, including the ring lands. I couldn't detect any problems with the crankshaft, but I'm wondering if I should have it checked at the machine shop. It's hard to imagine this much force to bend the rod and not damage something else. Might be time to go to Plan C, whatever that is.

jfryjfry
jfryjfry UltraDork
1/7/24 10:54 p.m.

Can you refresh my memory - what happened that caused the engine tear down??

Floating Doc (Forum Supporter)
Floating Doc (Forum Supporter) GRM+ Memberand UltimaDork
1/7/24 11:14 p.m.

In reply to jfryjfry :

This is from the junkyard engine. Looks like it was hydrolocked. I can buy a single rod on eBay for about $35-40.

Noddaz
Noddaz GRM+ Memberand PowerDork
1/8/24 8:01 a.m.

Can you use a rod out of the other engine?

Floating Doc (Forum Supporter)
Floating Doc (Forum Supporter) GRM+ Memberand UltimaDork
1/8/24 2:00 p.m.
Noddaz said:

Can you use a rod out of the other engine? 

The vortec rods are quite different. According to David Vizard in his book How to Build Max-Performance Chevy Small Blocks on a Budget, the Powder Metallurgy Forging (PMF) rods are stronger and lighter, and don't require balancing. 

PMF rod on the right.


 

PMF rod on the left 

You can easily tell them apart. The PMF rods do not have the pad on the outside of the rod cap. It's not as obvious here as my example is from a set that's been balanced. 

 

Early rod

PMF rod

Floating Doc (Forum Supporter)
Floating Doc (Forum Supporter) GRM+ Memberand UltimaDork
1/14/24 9:56 a.m.

Stampie
Stampie GRM+ Memberand MegaDork
1/14/24 11:26 a.m.

In reply to Floating Doc (Forum Supporter) :

That's a mighty purty rod you got yourself. 

Dusterbd13-michael
Dusterbd13-michael MegaDork
1/14/24 1:04 p.m.
Stampie said:

In reply to Floating Doc (Forum Supporter) :

That's a mighty purty rod you got yourself. 

That's what she said!

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