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Piston I.D.?

1743 Views 6 Replies 4 Participants Last post by  BigBlockRanger, 
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So I have just got my stroker kit back from the machine shop and my srp piston spec sheet says SCJ valve reliefs?
I have dove iron heads. I plan to go ahead and set it up this weekend to see, but I was wondering if there was a quicker way to tell them apart valve relief wise?
Sorry I don't have a way to post a picture or I would. Maybe some one has a picture of each?

Thanks in advance!
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Paul Kane
FAIRMONT MIKE said:
So I have just got my stroker kit back from the machine shop and my srp piston spec sheet says SCJ valve reliefs?
I have dove iron heads. I plan to go ahead and set it up this weekend to see, but I was wondering if there was a quicker way to tell them apart valve relief wise?
Sorry I don't have a way to post a picture or I would. Maybe some one has a picture of each?

Thanks in advance!
Click to expand...
Perhaps they are referring to the
SIZE of the iron head's valve relief (for a 2.25 valve) instead of the aluminum SCJ valve location.

The STD valve layout head will put the edge of the valve pocket reaching to the perimeter of the piston, while the aluminum SCJ valve pocket will be well inboard of the piston's perimeter.

Paul
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F
Thanks!

That is what I needed to know. It looks like I have the right pistons then, because the valve relief is right to the edge of the piston, just above the wrist pin.
Thanks again Paul.
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BigBlockRanger
FYI - This piston has the Kaase SCJ/P51 relief (top) and the standard 429/460 relief (bottom).
See less See more
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F
Thanks Big Block Ranger! Much clearer now.
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CarsByCarl
BigBlockRanger said:
FYI - This piston (made exclusively for CarsByCarl by Diamond Racing Pistons and photographed by Carl) has the Kaase SCJ/P51 relief (top) and the standard 429/460 relief (bottom).
Click to expand...
fixed it for you :D
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BigBlockRanger
Yeah, what he said! ;)
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