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Thread: RPM USA stroker kits

  1. #1
    xcop5l's Avatar
    xcop5l is offline 4th year spanner spinner
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    Question RPM USA stroker kits

    Has any one used or heard of people using the rpm usa stroker kit?
    im just wondering because it sounds like a good kit.
    its got
    cast steel crank
    "h" beam forged 3d rods
    forged full floating pistons
    race series thin grooved rings
    main big end and cam bearings
    full gasket kit

    also i was wondering wether the kit would be sutabil for a boost aplication
    Stato on the inside, berlina on the out side,5ltr under the bonnet,stockies all round...........that thing has to be a sleeper
    MY RIDES
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    http://forums.justcommodores.com.au/...ad.php?t=41837

  2. #2
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    i heard that there not very good, thats why i went with come. stuff apparently didn't fit right n needed machineing. h/balencer needed holes re machined to fit on i think, or something like that. then they needed to cut a bit of the piston off also to make it fit. dont know how true that is but someone who fitted one said that to me.i wasnt willing to take the risk to save a couple hundred $$

    it would be strong enough for boost h beam n forged to some extent what is comp? if its high then probably not too good.

  3. #3
    RVK 355's Avatar
    RVK 355 is offline M0DERAT0R
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    Not the best stroker crank brand, like the saying gose you get what you pay for

    Ive heard of these cranks needing alot of mallory metal to balance up, the indexing being out etc.

    invest a couple more $$ and go for something you know is good

    Harrop/crank shaft rebuilders etc

  4. #4
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    i would go come as there just as trusted, harrop is a little over priced i think.

  5. #5
    Blown V6 Hatch's Avatar
    Blown V6 Hatch is offline Too many projects.....
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  6. #6
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    i bought one of these cranks for dirt cheap brand new, not thinking bout it 2 much at the time, went to c my engine builder and he gave me the bad news. Not very good under heavy loads, got inferior castings, and when its got $2500 worth of goodies bolted to it and it breaks, u say goodbye to the whole lot. Stay away from em and stick with what works

  7. #7
    xcop5l's Avatar
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    yeah thats the plan now
    Stato on the inside, berlina on the out side,5ltr under the bonnet,stockies all round...........that thing has to be a sleeper
    MY RIDES
    [SIGPIC][/SIGPIC]
    http://forums.justcommodores.com.au/...ad.php?t=41837

  8. #8
    253@7k is offline 300rwhp supra. yay.
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    Pro stroke's 360 kit is a better option. Far better gear than usa, not as good as come/harrop, but a bit more reasonably priced.

  9. #9
    AirStrike's Avatar
    AirStrike is offline Site Administrator
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    I know what i'm using for my setup..........
    http://www.highperformanceworld.com.au/index.php?s=19
    The stage/kit #5. All the good gear for a tuff as nails hi comp N/A stroker, or swap the pistons out to something with around a -13cc dish and open the heads up some more and add some boost.
    Selling FG G6E Turbo and buying a N/A Supra

  10. #10
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    VL Berlina INJ 355

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    these days you pay for what you get really usa,rpm,prostroke ect are cheap and nasty heard a few roomas as have alot of other ppl i know
    harrop come crankshaft rebuilder are the way to go in my book
    iv got a harrop in mine wouldnt use anything else but hey thats just me
    each to there own i guess

    good luck with who ya choose m8

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