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Thread: RXP

  1. #1

    RXP

    What is a good compression on a 215hp 4 tec motor?

    Got pressure of 145psi with all within 10% OF EACH OTHER.

    Gary
    Uae


  2. #2
    Moderator beerdart's Avatar
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    Good to go with 145. 135 is the average depending on cam timing.

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    GOT BOOST? Dockside's Avatar
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    155hp must be diffrent as mine was 175 in all 3. i have never done my 215 though.

  4. #4
    I pew pew lazors
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    Hmmmm, these were my numbers.

    Cyl 1 - 120 psi
    Cyl 2 - 118 psi
    Cyl 3 - 125 psi

  5. #5
    Chaserxp215's Avatar
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    i just had 150 across the board in my 04. I think each compression guage is a little different.

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    PEST!'s Avatar
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    Did you warm it up first. It will lube the cylinders to the correct level and make everything tighten up. But They are uniform enough not to be a worry.

  7. #7
    Moderator Snoman's Avatar
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    Checked my wifes today and it was 130,130 and 134....

  8. #8
    I pew pew lazors
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    Quote Originally Posted by PEST! View Post
    Did you warm it up first. It will lube the cylinders to the correct level and make everything tighten up. But They are uniform enough not to be a worry.
    Ah, I didn't warm it up at all. You make a really good point. I have always changed my plugs with the engine cold though. So you need to "warm" it or just run it for about 10 seconds to get oil pumped around?

  9. #9
    I pew pew lazors
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    Quote Originally Posted by Chaserxp215 View Post
    i just had 150 across the board in my 04. I think each compression guage is a little different.
    I checked my gauge against my air compressor and it was about 3-5 psi below what the compressor was reading. Not sure which gauge might be wrong. I'd have to find a 2nd air compressor to test it on to really know.

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