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Thread: Want to know CC of 3.0l RSR head

  1. 05-19-2020, 09:07 AM #1
    preS
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    Want to know CC of 3.0l RSR head

    Hello All,

    Does any one have the information available of the volume (CC) of a 3.0L RSR head?

    Thanks in advance for your help.

    Richard
    searching for engine (case) 903742
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  2. 05-20-2020, 04:55 AM #2
    tom1394racing
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    I can't speak to the factory heads however when I built my 3.0 RSR hot rod motor at 10.5:1 CR with Mahle pistons, my heads were fly cut to 84 cc from the stock 90 cc.

    With 1.2 mm of deck ht and 39.5 cc of piston dome volume, I had 10.5:1 CR.
    Tom Butler
    1973 RSR Clone
    1970 911E
    914-6 GT Clone in Progress
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  3. 05-20-2020, 07:34 AM #3
    gled49
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    3.0 RSR heads had around 77 CC. The same as a 2.8. G
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  4. 05-20-2020, 07:41 AM #4
    preS
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    Quote Originally Posted by gled49 View Post
    3.0 RSR heads had around 77 CC. The same as a 2.8. G
    Thank you both for responding. We will see the machinist on Saturday to discuss.

    Richard
    searching for engine (case) 903742
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