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Thread: 2.5 to 2.2 turbo swap?

  1. #1
    Garrett booster
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    2.5 to 2.2 turbo swap?

    Bought an 88 lebaron conv that turned out to have a cracked block and head. I've got a 87 shelbyz parts car sittin over in the weeds that I used as a parts car several years ago (only used the interior). Was told the engine/turbo was good, but fuel pump was bad (never tried to make it run). Would yhe TII bolt up to the 2.5 auto trans? Other than wiring, exhaust, computer, and fuel pump, what else might need to be changed?
    I apreciate your input !!

  2. #2
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: 2.5 to 2.2 turbo swap?

    The motor will bolt right up. You should just need to change the calibration.

  3. #3
    Garrett booster
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    Re: 2.5 to 2.2 turbo swap?

    Quote Originally Posted by cordes View Post
    The motor will bolt right up. You should just need to change the calibration.
    Ok...thanks for the info. I've got all the parts I think...so if I can't find a cheap tbi motor I may plunge into it.

  4. #4
    turbo addict Pat's Avatar
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    Re: 2.5 to 2.2 turbo swap?

    Is the Lebaron currently a 2.5 NA car? If so, yes, the 2.2 will bolt up, but to run a turbo calibration, you'll also need a turbo SMEC wiring harness.

  5. #5
    Garrett booster
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    Re: 2.5 to 2.2 turbo swap?

    Quote Originally Posted by Pat View Post
    Is the Lebaron currently a 2.5 NA car? If so, yes, the 2.2 will bolt up, but to run a turbo calibration, you'll also need a turbo SMEC wiring harness.
    I was just tryin to put together a cheap daily driver. The turbo II engine is still in the car, and it still has the computer and wiring.

  6. #6
    Garrett booster
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    Re: 2.5 to 2.2 turbo swap?

    The 2.2 TII has the same crank bolt size and pattern as the 2.5? I was wanting to keep the lebaron auto...

  7. #7
    Super Moderator Turbo Mopar Staff 135sohc's Avatar
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    Re: 2.5 to 2.2 turbo swap?

    Quote Originally Posted by 540demon View Post
    The 2.2 TII has the same crank bolt size and pattern as the 2.5? I was wanting to keep the lebaron auto...

    its all the same. Just keep the proper bolts with the flexplate vs flywheel as they are slightly different.

  8. #8
    Supporting Member Turbo Mopar Contributor supercrackerbox's Avatar
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    Re: 2.5 to 2.2 turbo swap?

    Yes, the flexplate should swap right over.

  9. #9
    Garrett booster
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    Re: 2.5 to 2.2 turbo swap?

    Good deal. Thanks a lot for yalls help!

  10. #10
    Garrett booster
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    Re: 2.5 to 2.2 turbo swap?

    Put a hot battery in the T2 parts car, shot some starting fluid in er and she fired right up.sounded good, so I reckon I'll proceed.guess ill start pullin the motor/harness/computer tonight. I seen the harness is different at the injectors and throttle body, and I see the fuel pumps are different part #'s....but from the outside it seems pretty do-able. Exhaust even looks close...

  11. #11
    Garrett booster
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    Re: 2.5 to 2.2 turbo swap?

    Would you guys use the entire daytona wiring harness on the lebaron....or should I be ready for some splicin?

  12. #12

    Re: 2.5 to 2.2 turbo swap?

    Quote Originally Posted by 540demon View Post
    Would you guys use the entire daytona wiring harness on the lebaron....or should I be ready for some splicin?
    The problem with using the 87 harness on the 88 car is the two different computer setups. You would be much better off using an 88 turbo harness instead of trying to make the 87 harness work.

  13. #13
    Garrett booster
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    Re: 2.5 to 2.2 turbo swap?

    Yeah...turns out I was wrong....its an 88 shelbyz. So I guess I should be ok.

  14. #14
    Supporting Member Turbo Mopar Contributor supercrackerbox's Avatar
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    Re: 2.5 to 2.2 turbo swap?

    Oh well if they're both '88, everything should be plug n' play.

  15. #15
    Garrett booster
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    Re: 2.5 to 2.2 turbo swap?

    Good deal. Thanks for the info. Got the harness outta the shelby last night, now I guess I'm waiting on a power steering hose and timing belt.hope to set it over in there next week.

  16. #16
    Garrett booster
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    Re: 2.5 to 2.2 turbo swap?

    Again-I appreciate all of yalls input. Got the motor, harness, fuel pump, radiator/intercooler/trans cooler installed. Runs pretty good, jus hard to start (hot or cold). I expect a fresh tune up, trans fluid/filter/band adjustment, and new exhaust system will have it road ready
    ...thanks guys

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