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b20 with a jdm itr header?

Discussion in 'Engine Building' started by CRXratedR, Apr 25, 2004.

  1. CRXratedR

    CRXratedR Member

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    i need a car and a friend knows someone that is selling a dc integra with a usdm b20 swap, gsr tranny & jdm itr header..

    is it possible for a jdm itr header to fit on a b20? i thought they only fit on b16 and itr heads..

    how do i know if the tranny really is a gsr? ls and gsr trannies are both stamped y80..

    thanks..
     
  2. lsvteccrx

    lsvteccrx Senior Member

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    my boy has an ls turbo and he ended up buying a new manifold for it. we took his old manifold and placed it on a type r haed and it lined up. I dont see why a JDM type R manifold wont fit a b20.
     
  3. E_SolSi

    E_SolSi Member of the 20 nut club Moderator VIP

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    the ITR intake manifold will only fit on an ITR or B16 head

    the ITR header will fit on any B series
     
  4. turboB20hatch

    turboB20hatch Senior Member

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    it works but is a poor design for the b20. 4-1 is for topend power that b20 has mostly torque.
     
  5. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Nice logic... a 4-2-1 and 4-1 aren't THAT different when you look at the power curves. The JDM ITR header will work just fine with the B20.
     
  6. CRXratedR

    CRXratedR Member

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    so the same goes for all other headers? like a DC 4-1 header, if the application is for a gsr, then will it fit the b20 head?
     
  7. E_SolSi

    E_SolSi Member of the 20 nut club Moderator VIP

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    yes.... BUT.... a header for a GSR is usually shorter (doesnt extend back as far) than a header for other B series engines so it will require modification of the cat

    i think the difference is about 2 inches :hmm:
     
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