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Head Identification problem

PLYNX

By PLYNX,
in General Automotive Discussion

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PLYNX Mentor

PLYNX

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Hey guys ! I wonder if you can help me with head ID for my RB30 conversion.I got two heads. Ones a RB20 turbo(i think). I think its a turbo head by the valve sizes and individual port runners for each intake valve. Now heres the problem i got another head brand new, totaly bare. The valve sizes seems the same , maybe slightly larger but the bottom of the heads are different. There are more water jacket slots around the combustion chamber on the brand new one (which looks exactly like the head pictured with 62.2cc marked, in the Rb30 fact sheet) So which head is it ???? Im stumped ! Any help would be apreciated

Thanks Guys.

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https://www.sau.com.au/forums/topic/37539-head-identification-problem/
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