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Larger than stock TB for a Gen 2 MPFI (3.1)

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  • Wanted Larger than stock TB for a Gen 2 MPFI (3.1)

    Like the title says, I'm looking for a larger bore throttle body for a 3.1 FWD MPFI motor...
    PM me if you've got something,,

  • #2
    How big are you looking for?

    A 3.1 will only appreciate about 58mm without mods.

    MRZ Performance in Quebec offers bored and sleeved OEM units, (they will even do yours) and of course the WOT Store sells a 62mm TCE but that might be too big.

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    • #3
      Originally posted by asylummotorsports View Post
      How big are you looking for?

      A 3.1 will only appreciate about 58mm without mods.

      MRZ Performance in Quebec offers bored and sleeved OEM units, (they will even do yours) and of course the WOT Store sells a 62mm TCE but that might be too big.
      Honestly I have no idea what size..57-59mm maybe..

      The only mods will be 1.6:1 rockers, ported heads,LIM, UIM & some 3X00 exhaust manis..

      I had no idea MRZ Bored & Sleeved Stock ones... I'm trying to stay away from new parts...

      I'm pretty sure WOT doesn't have a 62 MM for a Gen 2 motor...

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      • #4
        Stock will be fine. For the cost vs power gains, it just isn't there. You would be better off taking your old TB, cleaning it really good then polishing the opening yourself.
        Lifting my front wheels, one jack at a time.

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        • #5
          I had Mathieu (MRZ) bore and sleeve the 56mm off a Quad out to 62mm and used it for a while on my 3500.

          Worked OK. but the linkage for the auto and cruise was a nightmare. I have since swapped it for a TCE 65mm.

          It's now going on Paul's Quad in Montreal, but he's not cheap. Nice work, but not cheap.

          It's all on their website. I'd post a link,,,but.... I think it's www.mrzperformance.com

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