some feedback on leakdown results..308GTS | FerrariChat

some feedback on leakdown results..308GTS

Discussion in 'Technical Q&A' started by groovzilla, Dec 2, 2003.

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  1. groovzilla

    groovzilla Karting

    Nov 28, 2003
    seattle, wa.
    Full Name:
    hello all,

    interested in this car and had engine checked...can i please get some input on these results as to excellent-good-ok??:

    1979 308GTS...38,000 miles

    leakdown...8% 8% 9% 10% 9% 8% 8%10%

    compression...170 165 170 165 165 160 165


    william ceriale seattle, wa.
  2. pma1010

    pma1010 F1 Rookie

    Jul 21, 2002
    Full Name:
    Appear reasonable if a bit higher leakdown/lower compression than mine. Some variation test to test caused by operator variances, engine temp, no of times it is spun etc. Net, net, I think the results are reasonable. I've been told anything over 12% on leakdown and +/- 10 psi on compression is a bit of a worry. Your results are within these tolerances.
  3. Wayne 962

    Wayne 962 Formula Junior
    Rossa Subscribed

    Nov 27, 2003
    Leakdown and compression numbers by themselves are not terribly useful, as there are a number of factors that can affect the resulting numbers. What is truly important is are the numbers consistent and equal across the range - which they are. That is good.


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