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  1. #1

    Engine Compression test (what values to expect)

    Hi I'm restoring my Williams, so disassembled it completely including the engine.

    As I have two engines gonna fit the best one, but before that gonna make a cylinder compression test.

    What values should I expect to obtain?

    Any help would be appreciated

  2. #2
    Forum User
    Join Date
    Jan 2012
    Location
    Abbeyfeale, Limerick, Ireland
    Posts
    192
    150psi should be good from what I'm told.

    Mine made 190-195-195-190 (or else was 195-190-190-195)

  3. #3
    Mine did 185-190 across the board with 200k miles on the clock

  4. #4
    Did the test and the value where around 13bar, 189 psi. Think the engine is around 100.000 miles

  5. #5
    Forum User Coops's Avatar
    Join Date
    Aug 2005
    Location
    Turbo'd Beastie
    Posts
    9,955
    spot on provided all within around 5-10% of each other

  6. #6
    So this engine is healthy


 

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