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Vortech blew my pistons... twice

This is a discussion on Vortech blew my pistons... twice within the Forced Induction forums, part of the LSx Technical Help Section category; So I bought a Vortech centrifugal supercharger for my stock (besides headers and exhaust) 98 trans am with 62000 miles. ...

  1. #1
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    1998 Trans Am WS6

    Vortech blew my pistons... twice

    So I bought a Vortech centrifugal supercharger for my stock (besides headers and exhaust) 98 trans am with 62000 miles.
    Got it dyno tuned with 405 to the tires at 5psi.
    Long story short I blew 3 pistons.
    So I put 3 stock pistons back in it and about a month later they blew again.

    Should I put new forged pistons and hardened pushrods back in it?
    Should I put in heads and/or a boost cam back in it while i have it apart?
    Any other supporting mods I should maybe get so this doesnt happen again?
    What would you guys do?

    Would greatly appreciate any help.
    Last edited by AfroStosWS6; 08-26-2008 at 07:02 PM.

  2. #2
    Member Tman's Avatar
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    It may have been a fluke. I run a Vortech Gtrim V-9 with aftercooler at a full 10 LBS for the last 3 years no problems what so ever.

    Since you are going to have it apart (and considering your budget) go forged.

  3. #3
    TunedbyFrost.com Tuner Frost's Avatar
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    sounds like it could easily be in the tuning... what was the AFR at WOT on the street?

  4. #4
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    Quote Originally Posted by Tman View Post
    It may have been a fluke. I run a Vortech Gtrim V-9 with aftercooler at a full 10 LBS for the last 3 years no problems what so ever.

    Since you are going to have it apart (and considering your budget) go forged.
    I agree! Do as much as you can while you have it torn down..

  5. #5
    King 0f n00bz shady milkman's Avatar
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    Quote Originally Posted by Frost View Post
    sounds like it could easily be in the tuning... what was the AFR at WOT on the street?
    x2.

  6. #6
    Blown and Stroked TNTramair's Avatar
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    Quote Originally Posted by Frost View Post
    sounds like it could easily be in the tuning... what was the AFR at WOT on the street?
    yep...sounds like a tuning issue more than anything. give us somemore info like A/F, timing etc.

  7. #7
    ls1ftw tigersport14's Avatar
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    subscribed

  8. #8
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    1998 Trans Am WS6

    The AFRs were 11.7-11.9 all across the board.
    It wasn't like a professional shop that did it though, you think this time after the pistons break in I should try takin it to a shop?
    I usually take it to Ed Wright, but he's a dick so I haven't been to his place in a while.

    I never really thought about the afrs being an issue because the guy said they were pretty good.

  9. #9
    TunedbyFrost.com Tuner Frost's Avatar
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    get it tuned!! If the AFR was 11.9 on an unloaded DJ, it would very likely be leaner than that on the street. The timing could be too high as well, or the IAT table not properly mapped to deal with rising IATs.

  10. #10
    King 0f n00bz shady milkman's Avatar
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    Quote Originally Posted by Frost View Post
    get it tuned!! If the AFR was 11.9 on an unloaded DJ, it would very likely be leaner than that on the street. The timing could be too high as well, or the IAT table not properly mapped to deal with rising IATs.
    i was thinking that once he got onto the street that he would run too lean.

  11. #11
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    money willing, get upgraded and tuned by someone reputable! worry free on 5+ lbs!

  12. #12
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    Dude, seriously get a tune...

    Saying your blower kills pistons is kinda like saying guns kill people

  13. #13
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    go forged and get a real tune, i had 120k on my truck running 15psi stock and didn't hurt it till i tried for 20

  14. #14
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    do you have any pics of the pistons what went on them- rings, detonation?

    Sounds more like the tune than anything.

  15. #15
    TunedbyFrost.com Tuner Frost's Avatar
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    Quote Originally Posted by black01_ws6 View Post
    do you have any pics of the pistons what went on them- rings, detonation?

    Sounds more like the tune than anything.
    uhh this thread was made back in august...

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