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2.8 3L +turbo

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  • #1

    2.8 3L +turbo

    I have a 1900 surf that origionally had a 2.4t engine on it and has had a swap to the 2.8 engine (Just the engine block) and is running 10psi on that. Looking at a few calculators this would be running a compression ratio of 36:1 instead of the stock 22:1 (don't think this is right). Which sounds way to high to me.
    I have just got quite a bad cracked head so wondering if i should wind the boost down or what?
    Anyone else running a 3L turbo?
    What kind of boost is better for the head?
    And how do i change boost pressure?
    Tags: None
  • #2
    Originally posted by johnoenator42 View Post
    I have a 1900 surf that origionally had a 2.4t engine on it and has had a swap to the 2.8 engine (Just the engine block) and is running 10psi on that. Looking at a few calculators this would be running a compression ratio of 36:1 instead of the stock 22:1 (don't think this is right). Which sounds way to high to me.
    I have just got quite a bad cracked head so wondering if i should wind the boost down or what?
    I reckon to have got 109 years out of a Surf was not too bad?
    Do you know that, with a 50 character limit, it's

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    • #3
      Originally posted by johnoenator42 View Post
      I have a 1900 surf that origionally had a 2.4t engine on it and has had a swap to the 2.8 engine (Just the engine block) and is running 10psi on that. Looking at a few calculators this would be running a compression ratio of 36:1 instead of the stock 22:1 (don't think this is right). Which sounds way to high to me.
      I have just got quite a bad cracked head so wondering if i should wind the boost down or what?
      Anyone else running a 3L turbo?
      What kind of boost is better for the head?
      And how do i change boost pressure?

      are you running a 2.8 with the 2.4 turbo set up ?? as the only 2.8 we get here normally is non turbo


      the diahatsu 2.8 is turbocharged and is a toyota engine
      ' You've arrived on a rather special night. It's one of the master's affairs.'

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      • #4
        Do a search for 'wastegate'.

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        • #5
          Originally posted by Albannach View Post
          I reckon to have got 109 years out of a Surf was not too bad?
          Well spotted
          ' You've arrived on a rather special night. It's one of the master's affairs.'

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          • #6
            What kind of boost is better for the head? Well... probably none.

            You didn't expect a sensible answer here did you?
            Cutting steps in the roof of the world

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            • #7
              when you say swapped over and you mentioned the block,was it just the block that was swapped or was it the head also.or are you running a 2.8 block with a 2.4 head???? if its a 2.8 block with a 2.4 head there lies your problem coz you are still using the 2.4 head get your self a 2.8(3l) head.and it will be fine.
              www.overfab.uk

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              • #8
                Yea, running a 2.8 with the 2.4 setup, 2.8 head.

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