LS/Vtec Blowby

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dtob

dtob

New Member
Just thought I'd post up some nice pics I have of my stock pistons out of the LS block that I got. Good thing I'm rebuilding it. I'm putting some PR3s in it and took some pictures of the two pistons side by side just so everyone knows the difference between the two pistons. The PR3 has the dome and the larger valve reliefs and the PR4 is a flat top and has smaller valve reliefs.
 

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boostin4fun said:
That was one of the ugliest pistons I have ever seen that was still in one piece!!
Click to expand...


I know. Its a good thing its getting a rebuild. The cylinders were fine though and the hone marks are still there from the factory. Must have been getting some good oiling I guess. The oil rings are actually stuck in the piston because they are caked with burnt oil.
 
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