Head, cam, intake install

Discussion in '1994 - 1995 Specific Tech' started by traewolfe, Feb 1, 2013.


  1. traewolfe

    traewolfe Member

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    I am thinking about doing a HCI swap. My car has about 130k on it. What are the thoughts about doing this without doing anything to the bottom end?
     
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  2. revhead347

    revhead347 I have face herpes.

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    That's not that high a mileage. Check the compression. If it's good, go for it.

    Kurt
     
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  3. RIO5.0

    RIO5.0 Mustang Master

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    With that milage, I'd do a compression & leak down test..if those have solid results then go for it as new H/C/I/ are gonna put some umph to it. If the motor was cared for and not beat to death all should be fine. I might drop the pan and replace the oil pump.
     
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  4. revhead347

    revhead347 I have face herpes.

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    A bad indication on a leak down test on an engine with good compression is more likely to be a valve problem then a ring problem. If you are changing the heads it doesn't matter. There are tons of Mustangs with that many miles on them with HCI combos. That doesn't mean your engine is necessarily the optimum candidate, but it's likely fine and it will work fine. I've seen high mileage engines perform better on a compression test than a new one. If you have been using synthetic oil then it might not have much wear at all.

    Kurt
     
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  5. revhead347

    revhead347 I have face herpes.

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    A bad indication on a leak down test on an engine with good compression is more likely to be a valve problem then a ring problem. If you are changing the heads it doesn't matter. There are tons of Mustangs with that many miles on them with HCI combos. That doesn't mean your engine is necessarily the optimum candidate, but it's likely fine and it will work fine. I've seen high mileage engines perform better on a compression test than a new one. If you have been using synthetic oil then it might not have much wear at all.

    Kurt
     
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  6. traewolfe

    traewolfe Member

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    What should the compression be on a stock motor? What would be considered undesirable to do this?
     
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  7. revhead347

    revhead347 I have face herpes.

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    You are more checking for even compression. Excellent compression is all the cylinders with 10% of each other. As long as one or two cylinders isn't way off, you are good.

    Kurt
     
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  8. '94ChickStang

    '94ChickStang Member

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    just do it and get it tuned...the motor will handle it fine
     
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  9. Venom351R

    Venom351R Founding Member

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    Do it, it will be a whole new car. Doubtful your compression is bad if it was taken care of and not driven hard.
     
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