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  1. #1
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    91 2.4l 175 how do i make behind the liner, or some power either way

    i have a 91 2.4l i am rebuilding, iv been searching this forum and figure i have a fatblock 2.4l i was going to port the pistons and put it back together with a bridgport front half, flywheel, carbs heads etc... but have read the best way to make power with this block is too make it "behind the liner" like a 2.5L ,, if i find a stripped 2.5l block will i be able to copy the porting and grind out my 2.4 accordingly or is there WAY more to it.. when i started this project i just wanted it to run,, but now that im reading maby a 2.0l would be a better daily driver, and this fatblock 2.4 powerhead could make some ponies for the weekend

  2. #2
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    contact James Perry on this site aka Wrenchin2 he can fill in the blanks its one of his favorite projects he can make um honk on

  3. #3
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    anyone have a 2.5L block i can build instead,

  4. #4
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    Quote Originally Posted by BoomerMuskoka View Post
    anyone have a 2.5L block i can build instead,
    try Modfather, I know they replaced a 2.5 lately,the old one might be buildable!

  5. #5
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    2,4 fatblocks are already good daily drivers,that's what xr4's are, and they are basically factory 175's.

  6. #6
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    There was a fat block XR4 and a fat block 175. The porting is different between the engines and so are the carbs. I have both here. I have thoughts of building a behind the liner 2.4 along with a 7 pedal front and XRI injection. I also toyed with the thoughts of cutting 6 blank OMC sleeves and making it a behind the liner Bridgeport XRI injected. Then I remember I have NO TIME! LOL!!! Also the BP front is a small center main bearing and would not work on the large bearing block you have. You would simply need to use a 2.5 front if you plan on a 7 pedal engine and remove the block dowel pins If you cut it like I did you will not need to modify the pistons. If you copy a 2.5 block then the pistons and sleeves will have to be further modified. This is one I done not too long ago. Just My experiences.....
    Last edited by wrechin2; 08-27-2013 at 01:23 PM. Reason: subscribe
    James Perry

  7. #7
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    is there anything wrong with using the stock front half? with 5 pedal reeds

  8. #8
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    NOPE. If you are going to run carbs.
    James Perry

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