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4.0 OHV Performance Build - An extremely capable daily!

Discussion in 'Need for Speed!' started by krlefevra, July 10, 2015.

^^Searches ExplorerForum.com^^





  1. malohnes

    malohnes Active Member

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    City, State:
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    '91 xl m5 4x4
    Anymore progress on this project?

    I'm very close to getting this kit, minus the 422 cam and am looking for feedback on issues and solutions. I don't have the machine shops locally sourced so I have to farm out the work and that eats up my budget really fast. Knowing some of this ahead of time means less down time for me.

    I'm mostly concerned with reliability issues and fitment quality.

    If things go well, come rebuild time, 2 years down the road, I'm very likely going turbo, Morana stroker kit and custom engine computer.
     
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  3. Naasau

    Naasau Active Member

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    '93 Explorer XLT
    Bump.

    Guys? Did your engines explode and kill you both?
     
  4. willzilla

    willzilla Active Member

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    lol... <<crickets>>
     
  5. jd4242

    jd4242 Explorer Addict

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    Im still around..i finally got my parts back and just assembling my motor. .ive been talking with Tom..he has redesigned the plate a couple times as well as the hardware, he also has come out with a top girdle for them to keep them from breaking..for over $1,500 for his kit now,id highly advise against getting his roller rockers..
     
  6. Dono

    Dono 347 V8 Limited turbo Elite Explorer

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    Is he going to send you the updated parts for free? It sure sounds like his design was never reliable in the first place.
     
  7. jd4242

    jd4242 Explorer Addict

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    We are still emailing back and forth. .but yea i think he released it a little early
     
  8. Naasau

    Naasau Active Member

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    Damn. That's Savage.

    I'm looking at a rebuild/full reconditioned engine since I flipped my X a few weeks back, and I've been scouring this tread as well as a few others for ideas.

    I'm sorry you're having issues with your engine.
     
  9. jd4242

    jd4242 Explorer Addict

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    This is only issue, rest of motor is done..the top girdle is very large and requires modification to valve covers..it also may use longer studs,different/longer poly locks..i dont know if i have room for all that under my supercharger plate..
     
  10. jd4242

    jd4242 Explorer Addict

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    He has responded that he does have a updated plate and hardware and would replace mine if i pay shipping both ways..so im going to send them back..he hasn't responded to what is needed for the top girdle yet,ive asked in every email
     
  11. Dono

    Dono 347 V8 Limited turbo Elite Explorer

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    Looking at the pain I've been thru, I'd definitely error on the side of caution.
    I think your making a wise choice.
     
    • Like Like x 1
  12. Craig H Durkee

    Craig H Durkee New Member

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    1997 Lincoln Mark VIII
    JD4242... The 1.8 intake along with the 1.5 exhaust valves will physically fit but only have about 0.030" clearance between them! It would take just a little bit of guide wear and the valves will be in contact with each other. How do you propose this is a good upgrade?
     

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