Compression & Leakdown Tests

Discussion in 'United Kingdom' started by gts328uk, Jun 3, 2007.

  1. gts328uk

    gts328uk Karting

    Nov 26, 2003
    Yorkshire, UK
    Full Name:
    Help Guys

    Looking at a 355 on Monday and if decide to buy this will be subject to an inspection, compression and leakdown tests. What are the new figures for a 1996 355 for compression and leakdown?

  2. greyboxer

    greyboxer F1 World Champ

    Dec 8, 2004
    South East
    Full Name:
    I'm not sure there is a 'new' figure but look in the main 355 section - the main thing is a tight spread as the results are hugely affected by both the operator and the conditions
  3. Iain

    Iain F1 Rookie

    Jan 21, 2005
    Hopefully whoever does the test/PPI for you will be able to advise. As usual the test should be done on a warm engine.

    ISTR seeing results from 355s posted hereabouts nearing 200psi - certainly up at 190 psi for a healthy engine. I think you'd walk away from anything less than about 170.

    As Greyboxer said, the "spread" is as important as the absolute numbers. 10% seems to be the accepted comfort zone/maximum. 5% would be better.


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