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Thread: Bad News For Me

  1. #1
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    Bad News For Me

    So just putzing along in my 1986 STV ProComp Sprint Bottom at about 5800 rpms I'd say for 1/4 mile after it was warmed up for about 20 minutes or so. It went like this. Eeeeeeeeeeeeeeeeeeeeeeee(engine humming beautifully) Then dead silence. No noise, No bang, No nothing. Just stopped dead in a split second. Motor locked up I am assuming because the starter just clicked and nothing rotated but it didn't blow up. I was running Premium fuel, between 32 and 40 to 1 mixture. Pennzoil Premium Plus Outboard oil. Just like that. The motor was/is a 1984 2.4 Bridgeport carborated. Alien Cowl, CLE lower unit, custom prop, milled heads, aftermarket reeds and a whole bunch of stuff that Tabara Racing put into the engine that I don't quite remember, a 100+ boat. You can hear this engine 1/2 mile away, sounded so badass.

    I tried looking up new parts for a rebuild but haven't had any luck sorting parts even though I didn't look too hard yet. Although I didn't pull the motor apart or the heads to see what happened. I just parked it in sadness and am driving one of the other boats.

    So do you think I am better off parting out this merc engine for parts, the 1.87 CLE, and/or is it worth rebuilding?

    Or bite the bullet and purchase a newer motor like a 300 drag.

    I really don't know which direction to go. Any help would be greatly appreciated.

  2. #2
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    Dont assume stuck mota. Locked up gear case will do same thing. Had friend almost buy new powerhead until I made him pull lower and wah lah. No powerhead needed, just lower.


    100+mph in 800' STV River Rocket w/modified 260 SOLD

    100+mph GPS'd TRIAD V-21 w/stock 2.5 260 SS (85mph wid da 200EFI so far!!!!!) SOLD

    22' SmokerCraft Deck Boat wid a 200EFI(not GPS'd Yet)
    ALLISON XB2002-Gotta rig it now

  3. #3
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    Yep, after the mourning do the autopsy...
    ARGO Cat 18'
    Mercury 2.4EFI/CLE
    ------------------------------------
    If it's not a cat it's a.............dog ?



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  5. #4
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    Please post findings. Plug color, jet size and what type carbs. Maybe recheck timing advance. That rpm is sort of a hot range if the jets are iffy.

    DB

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    keep in mind the motor is 33 years old
    SEEBOLD CHAMPBOAT MERCURY S3000

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    might not be a bridgeport if its an 84?
    SEEBOLD CHAMPBOAT MERCURY S3000

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    Same thing happened to me last year-it was the lower.
    Allison GT20
    ProMax/260

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    Definitely keep and rebuild if diagnosis shows it needs it, those Bridgeports are badass and getting more scarce every year. A 300drag would be cool, but a finely tuned bridgeport is better
    1977 Hydrostream Vector 2.5 Promax

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    Quote Originally Posted by jmadisonbiii View Post
    Same thing happened to me last year-it was the lower.
    I might have to take it out of storage to look at it. Just mentally doesn't seem possible that if the lower unit locked up that the motor would die so fast and quick without twisting the driveshaft off or making a noise with all that inertia and momentum spinning at just under 6k. But then again, This has never happened to me before.

  11. #10
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    Quote Originally Posted by Bodhi View Post
    Definitely keep and rebuild if diagnosis shows it needs it, those Bridgeports are badass and getting more scarce every year. A 300drag would be cool, but a finely tuned bridgeport is better
    Are u high? Th ed y quit makin bridgeports in q991........pull ur head ou%a your ass and get as 2.5
    SEEBOLD CHAMPBOAT MERCURY S3000

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    U cant even get parts for them anymore
    SEEBOLD CHAMPBOAT MERCURY S3000

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    Personaly like the 2.4 better too, lowet weight... Have a fresh rebuilded 2.4efi in my storage, and that will never leave me until its totalt exploded and imposible to rebuild...

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    Quote Originally Posted by twin turbo View Post
    Personaly like the 2.4 better too, lowet weight... Have a fresh rebuilded 2.4efi in my storage, and that will never leave me until its totalt exploded and imposible to rebuild...
    ...I like any performance 2.4 also. There will never be a lighter weight, non sleeved Merc V-6, with higher horsepower, made again. Just a personal favorite, after running every version produced since the beginning. BUT! With that said...The 2.5 was the next great generation of that blocks serious horsepower, that cannot be discounted. The technology & horsepower engineered from that motor still reigns supreme today in racing circles.

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    Quote Originally Posted by PARKER RABE View Post
    Are u high? Th ed y quit makin bridgeports in q991........pull ur head ou%a your ass and get as 2.5
    I can agree with you a little bit here for obvious reasons, but for nastalgic reasons I can see why you would want to keep the 1st generation high perf engine going. Kinda like how a brand new Etec in my opinion looks odd on an STV or dropping an old merc inline 6 on a brand new 40k bass boat because it clearly can be done and nobody would ever tell the man with a broken down Hemi Cuda to throw that old piece of crap motor away, they haven't made it since 1971 and tell him to pull his head out of his ass and drop a modern chrysler hemi in his cuda, unless he was high.

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    Quote Originally Posted by PARKER RABE View Post
    Are u high? Th ed y quit makin bridgeports in q991........pull ur head ou%a your ass and get as 2.5
    I'm just sayin, they're pretty badass when tuned up. I certainly rebuild one if i had it. I'd never give up my 2.5 for one though.....
    1977 Hydrostream Vector 2.5 Promax

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