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Thread: 4.0 head swap

  1. #1
    Registered User robertf03's Avatar
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    4.0 head swap

    got a 91 4.0 HO head for 30 bucks at pick and pull yesterday for my brothers 258 YJ. supposed to add around 40 hp to the I6
    ...

  2. #2
    Registered User robertf03's Avatar
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    it even has the extra water jackets already filled. I'm a bit concerned about that since there is no reason to do that to a 4.0
    ...

  3. #3
    Club Old Man mark's Avatar
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    Better have that thing checked for cracks. It looks like someone aborted that very same procedure after filling the water jacket.

    -Mark
    Just when you though it was safe to go back in the water...

  4. #4
    Once was lost... BMFScout's Avatar
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    the worst feeling in the world is to spend money on headwork, get it in the car, fire that mother up (blub, blub, open headers, blub, blub) then proceed to fog the driveway with water vapor. You stand back and yell ****, then get to replace it with new heads. Get it checked out, and if you let someone work on it, say to put hardened seats in it and 2.02 valves, make sure they know wtf they are doing.
    voice of experience,
    Jimmy
    Boats and hoes

    Stumble in to the liquor store
    With a dollar-fifty for a bottle of wine,
    I know just what I'm lookin for
    Thunderbird will do just fine.

  5. #5
    Registered User robertf03's Avatar
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    i was planning on having it hot tanked and magnafluxed. Wheres a good place to get that done around Dallas? I was just going to take it to city motor supply and see if they can do it, but I'd rather take it to a specialty shop rather than a mass produced rebuilt motor place.
    ...

  6. #6
    Once was lost... BMFScout's Avatar
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    I think Plano Auto can do it. I know they have a hot tank, and they can do a pressure test, but I am not sure about the magnafluxing part. If you see a pos Isuzu running around Plano with parts in the back it is me. I am currently employed as one of their parts bitches. gotta love summer jobs, but it beats the hell out of working nights, weekends, or doing actual labor in the sun
    Boats and hoes

    Stumble in to the liquor store
    With a dollar-fifty for a bottle of wine,
    I know just what I'm lookin for
    Thunderbird will do just fine.

  7. #7
    Registered User robertf03's Avatar
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    sweet, so can you hook me up on a hot tank deal then
    ...

  8. #8
    Once was lost... BMFScout's Avatar
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    Flem the jew, always working an angle...
    Boats and hoes

    Stumble in to the liquor store
    With a dollar-fifty for a bottle of wine,
    I know just what I'm lookin for
    Thunderbird will do just fine.

  9. #9
    Registered User robertf03's Avatar
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    you bet, its not even for my Jeep though, so technically its an angle of an angle, or maybe the angle of the dangle

    well I need to go get back to drinking beer and using metric tools on the crapanese vehicle
    ...

  10. #10
    AgDieseler
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    Trinity Castings in Dallas can do all of the stuff you mentioned. That's where I got all the machine work done on my engine.

  11. #11
    Fresh Cope, It Satisfies! StevenAg03's Avatar
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    he dont want to take it to a diesel specialty shop......oh wait....you said the worked on your motor....then they can do gas stuff...
    Steven W
    02 Dodge 2500
    82 CJ-7 - sitting in a field...

    "....Your theory is f*cked up like a football bat...."

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