Fresh Engine, Nasty Noise.

Discussion in 'Fox 5.0 Mustang Tech' started by a91what, Mar 27, 2014.


  1. a91what

    a91what Member

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    ok so i rebuilt a 302 .030 over new pistons moly rings and kings bearings. i reused the factory lifters, ported gt40s and e303 cam with 1.72rr. i adjusted the lifters with shims before starting the engine. it has 65 lbs of oil pressure but smokes pretty bad after i hooked up the exhaust, non when it had open headers... then about 10mins in it developed a nasty tick, loud enough i shut it right down....... any ideas? i did check ptv during install new pistons have huge reliefs.
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  2. Gearbanger 101

    Gearbanger 101 Straight Outta Locash Super Mod

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    Is this a new camshaft? They'll make some noise while you're breaking them in.
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  3. a91what

    a91what Member

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    no reused cam from previous build. roller motor.
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  4. Gearbanger 101

    Gearbanger 101 Straight Outta Locash Super Mod

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    Still needs to be broken in. I'm gonna bet the lifters didn't go in the exact bore, in the exact configuration they did previous? You sure your tick isn't an exhaust leak?
    Last edited: Mar 27, 2014
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  5. elarm1

    elarm1 Active Member

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    exhaust leak at the headers
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  6. a91what

    a91what Member

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    i damn surw hope so. that would be better than pullin it apart
    . ill find out tonight.
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  7. A5literMan

    A5literMan Mustang Master

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    Also did you keep the lifters soaking in oil while rebuilding the engine? Recheck the rockers after warming up? My guess is also with an exhaust leak. They tend to happen after a few heat cycles.
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  8. a91what

    a91what Member

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    no good no start. smells like fuel coming out of intake.
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  9. a91what

    a91what Member

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    ok so the driver side header had loosened up. oops.
    but now she wont fire, checked the tps, gets fuel has spark, but no start not even a fart. the only thing i see thats odd is my tach does not work? i checked the wiring seems fine. im out of ideas
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  10. 89_LX

    89_LX Member

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    Sounds like a timing issue.
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  11. Gearbanger 101

    Gearbanger 101 Straight Outta Locash Super Mod

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    Re-check your timing as stated above.

    Set engine to #1 TDC and stab the distributor at 10-degree's advanced. That'll get you pretty close to where you have to be.

    Did you notice anything usual with the way the car was running before, aside from the exhaust leak? Headers getting really hot?
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  12. a91what

    a91what Member

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    headers did get real hot. the plugs were saturated so i did a leak down test on the injectors they passed. new plugs timing was set to 12* when i had her running. but i will recheck and stab her again for ****s.
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  13. Gearbanger 101

    Gearbanger 101 Straight Outta Locash Super Mod

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    Really hot headers indicate timing too far retarded. With timing that far retarded, it's understandable why you would have trouble getting it to and keeping it running.
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  14. TOOLOW91

    TOOLOW91 Mustang Master

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    Im gonna play the devils advocate here. If you read some directions like comps i think it was they tell you NOT to do this with a roller lifter being that it may prematurely bleed up with pressure and hold the valve slightly open on initial start up or something to that affect.
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  15. a91what

    a91what Member

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    well the verdict is in im up a creek. the moly ring never seated, geuss they decided to quit. ive got 30psi on the compression check. along with the fuel smell in the oil, im sure the cylinders washed down. guess i shoulda listened to my dad and just used the iron ones.
    im gonna tear her back out and rering it unless there is a way to bring em back but i doubt it. i was told to hit the block with a hone and slap em in. gues s that dont work with molys :bang:
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  16. a91what

    a91what Member

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    at least it looks good IMAG0243_BURST002.jpg IMAG0243_BURST002.jpg
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