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Thread: 2 piece upper plenums

  1. #121
    turbo addict
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    Re: 2 piece upper plenums

    Also why are you running a 52mm TB? I thought these plenums were set up for 58's??? You might also want to find a 52 from a 3.3 V6 (if you don't/can't change up to a 58) as they have the same vac ports as the Turbo's. The 52 with ports in the center bosses are ported vac, where the 52 with a port in the outside boss is true vacuum and the one in the center is ported. Not sure how the GTP is set up vac wise with the TB though.

  2. #122
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    Re: 2 piece upper plenums

    Nevermind about the airbox, forgot you were running a TU header.

  3. #123
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    Re: 2 piece upper plenums

    Also why are you running a 52mm TB?
    The stock one is small, so am installing the only larger one I have.
    I measured this one and was 53.3...if I remember right.
    Great stuff for great cars! Poly engine mounts and bushings at: http://www.polybushings.com

  4. #124
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    Re: 2 piece upper plenums

    yea it's what the factory calls a 52mm. There's a couple 58's at the local j-yard.

  5. #125
    Garrett booster
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    Re: 2 piece upper plenums

    I just set mine on & its like 1/2" or less from firewall. Do I have to run solid motor mounts with intake? I'm currently running a mp front motor mount.

  6. #126
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    Re: 2 piece upper plenums

    solid front and rear mounts will be needed for this, i kinda got nervous with how damn close it was to my firewall too.

  7. #127
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    Re: 2 piece upper plenums

    I got mine finally working today. Throttle cable did not fit, was too short. Original was 100 inches long and the new one had to be 120 inches long. Used one from a marine shop, with lots of mods. Extending the wiring tomorrow and then test drive. Will take photos.
    Great stuff for great cars! Poly engine mounts and bushings at: http://www.polybushings.com

  8. #128
    boostaholic
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    Re: 2 piece upper plenums

    Quote Originally Posted by Punish'nRice View Post
    I just set mine on & its like 1/2" or less from firewall. Do I have to run solid motor mounts with intake? I'm currently running a mp front motor mount.
    I would think if your mounts are all in good shape you would be fine, but the poly bushing are the way to go on any modified car in my opinion. Easier on the axles, and better 60'.

  9. #129
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    Re: 2 piece upper plenums

    Quote Originally Posted by Johnny View Post
    I got mine finally working today. Throttle cable did not fit, was too short. Original was 100 inches long and the new one had to be 120 inches long. Used one from a marine shop, with lots of mods. Extending the wiring tomorrow and then test drive. Will take photos.
    Nice Johnny! I would love to see a picture of it.

    I don't think anyone else will have a cable length issue. On your consulier the TB is farther away from the gas pedal. In a fwd car the TB will be closer to the pedal, so fwd cars should have alittle extra cable.

  10. #130
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    Re: 2 piece upper plenums

    I figured that, my own issue to be sure.
    Great stuff for great cars! Poly engine mounts and bushings at: http://www.polybushings.com

  11. #131
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    Re: 2 piece upper plenums

    I started the car, fixing a few little issues. Then will button up the rest.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Great stuff for great cars! Poly engine mounts and bushings at: http://www.polybushings.com

  12. #132
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    Re: 2 piece upper plenums

    Got it assembled, running and did a test drive today. It works.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Great stuff for great cars! Poly engine mounts and bushings at: http://www.polybushings.com

  13. #133
    turbo addict moparzrule's Avatar
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    Re: 2 piece upper plenums

    Lengel please clear your PM's!

  14. #134
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    Re: 2 piece upper plenums

    Quote Originally Posted by moparzrule View Post
    Lengel please clear your PM's!
    Sorry I'm on vacation and my vendor membership expired, and I can't figure out how to renew it on my phone. LOL!

  15. #135
    turbo addict moparzrule's Avatar
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    Re: 2 piece upper plenums

    That's fine man I understand. Do you happen to have any of these laying around you can sell?

  16. #136
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    Re: 2 piece upper plenums

    Sorry I don't have any. If you want one I would make a wanted thread. Someone may have one that they don't need anymore.

  17. #137

    Re: 2 piece upper plenums

    I want a large plenum for my 2 piece also

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