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Thread: Valves

  1. 05-05-2016, 01:25 PM #1

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    Default Valves

    What is the biggest valve I can put in 643 heads.
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  2. 05-05-2016, 01:25 PM #2

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    2.00 1.65 without touching seats I was told

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  3. 05-05-2016, 02:14 PM #3

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  4. 05-05-2016, 11:01 PM #4

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    2.00" and 1.56", anything bigger is a waste on stock seats and will shroud them
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  5. 05-06-2016, 07:40 AM #5

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    The stock setas re 2.00/1.56 and you can go up to a 2.00/1.56 v alve if you ahve the seats machined for these valves.

    Any larger valve would require changing valve seats to larger seats.

    Lloyd
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