Twin Turbo LS2

Discussion in 'High Tech Retrofits' started by mwhizard, Mar 2, 2011.

  1. Twisted_Metal

    Twisted_Metal Administrator Staff Member Lifetime Gold Member

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    You've got skillz with a TIG! :cool:
    The welds look fantastic and the layout looks like a very workable plan!

    I noticed you mentioned the turbo is hanging from the pipe.
    I don't distrust your welds or material selection (you know your stuff there) but I have to wonder about the 2-bolt flange at the manifold....

    I can see the potential of vibration/harmonics stressing that flange to the limit.
    The intake side of the turbo will be dampened somewhat by the tube to the intercooler but it won't be a load bearing joint... Right?

    Is there any way of adding a brace from the intake side of the turbo back to the front of the head?

    It could relieve much of the stress on the pipe and 2-bolt flange while dampening any harmonics of this mass hanging forward of the manifold.
    It would be a safety catch too.


    Maybe I'm worried about absolutely nothing... But I would feel safer about having something helping to support the weight besides the manifold.
     
  2. mwhizard

    mwhizard Veteran Member

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    I will be supporting the turbo's for sure. I will build a brace from the head to to the turbo.
     
  3. SupplySgt

    SupplySgt Veteran Member Lifetime Gold Member

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    Finally back home!!!
    WOW!!!! That's impressive as hell. I don't have those types of skills yet for sure. I'm definitely looking forward to seeing this as it progresses.
     
  4. JJFarmer

    JJFarmer Veteran Member

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    Dang, that is awesome....me likey, someday....
     
  5. Fbird

    Fbird Veteran Member Lifetime Gold Member

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    Gotta love the whine!!!! Currently my PONCHO 400 has 458 hp and 630 ft/lbs torque...but that is pretty stockish. I know to add some squeeze I'ld have to drop the comp down from 10:1.....to say 7.6 ish with 12 lbs boost. I currently have a milidon gear drive.....WOW you talk about screamin!!!! Was the only way to dial in the Factory RAIV cam. I didn't realize the Prochargers were similar with the whine sound. Bummer....cause it does make it a real chore trying to here/listen/find any noise under the hood and hard to SNEAK-UP on anybody. The only problem i have with the turbo's are the realestate....like....you near about need a 72 monte-carlo front end to put all the stuff :(
     
  6. Twisted_Metal

    Twisted_Metal Administrator Staff Member Lifetime Gold Member

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    I should have known you thought of that. ;)
     
  7. mwhizard

    mwhizard Veteran Member

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    -Fbird, The newer prochargers have helical cut gears in them so they are much quieter than the old unit I had (straight cut gears). With intercooling and a proper tune you can put about 7 to 9 psi of boost on a stock LS motor, and they are running 10 to 11:1 CR. The space for turbo's is definately a challenge!
     
  8. mwhizard

    mwhizard Veteran Member

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    I got the other side done today... YAY!!! I ran into an issue with my pipe though. Trying to find schedule 10, 2.5" stainless steel straight pipe was tough. Especially when you only need 6 inches of it. So tough that no one had it. One guy could get it, but I would have to buy a 20 foot length and he would still have to order it. Solution? Bought 6 inches of schedule 40, 2.5" pipe and spent a good hour on the lathe boring it out. Problem solved.
    Pipe in lathe
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    Drivers side pipe before final welding
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    All mocked up
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    The stands I made to hold the turbo's in place while building pipe
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  9. Twisted_Metal

    Twisted_Metal Administrator Staff Member Lifetime Gold Member

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    I didn't notice in the previous pics..... It's all tucked under a stock hood! :cool: :cool: :cool:
     
  10. mwhizard

    mwhizard Veteran Member

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    Yes, sleeper? not really....
     

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