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Thread: M20 Bottom Mount Manifold (tubular)

  1. #1
    Join Date
    Sep 2019
    Location
    US
    Posts
    8
    My Cars
    91 318i

    M20 Bottom Mount Manifold (tubular)

    If anyone is looking for a viable quality manifold that isnt like all the others, I've developed a tubular bottom mount manifold. Unlike most top mounts it is equal length. Not here to argue how much that matters.
    at the bottom is info from our website. As it states, depending on how you route your oil lines an oil scavenge may not be necessary, we ran one on the test car just to be safe.
    We've tried fitting an internally wastegated turbo but couldn't find a configuration that wouldnt require chassis modification, so an externally wastegated turbo is recommended.
    We will honor a 1 year warranty against cracking for street use. (we cant warranty track parts, sorry)
    Feel free to shoot any questions.

    www.oldspoolperformance.com

    This manifold was designed to place the turbo lower for proper heat control and weight distribution while still being above the oil line, though an oil scavenge pump is still recommended. This manifold also lets you keep AC if you so choose.


    -Fabricated from 1 1/4" 304L Stainless Schedule 10


    -100% Tig welded and back purged.


    -Designed for GTX3076R, Recommended .82A/R or smaller turbo, externally wastegated.


    -Comes with a custom engine mount bracket.


    -Highly recommend running an oil scavenge pump for draining oil efficiently at high rpm.


    **This item is made to order, requires a 2-3 week lead time.
    **This is a custom product, all sales are final.


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  2. #2
    Join Date
    Sep 2005
    Location
    Bellingham, WA
    Posts
    3,372
    My Cars
    e30
    Looks like a nice manifold option. Most of the M20 ones I used to see were top mount but bottom mount makes sense too.

    Most people on here have E36+ based engines but there are some single cam people around.

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