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type r head

Discussion in 'HYBRID -> EG-EK / DC' started by breed, Mar 23, 2005.

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  1. breed

    breed Senior Member

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    how can you tell if a head is really a type r? does it have any specific markings or features on it? i have a 98 dohc head and it's stamped with pr3-3 and my brother has a 99 type r and his head is stamped with pr3-4, would my head be jdm? or is it not type r.
     
  2. civicious

    civicious FüK-VTEC VIP

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    Dual intake valvesprings = type R
    Single intake valvesprings = B16
     
  3. rcoolb2002

    rcoolb2002 Member

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    I have a 2001 Type R head... its stamped pr3-4
     
  4. civicious

    civicious FüK-VTEC VIP

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    96-98 = obd2a
    99-up = obd2b

    that might account for the 3 / 4 difference.
     
  5. projectxspeed

    projectxspeed Senior Member

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    Like it was stated above, pop the valve cover and you will be able to tell fast.
     
  6. pissedoffsol

    pissedoffsol RETIRED

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    doubtful. the castings have little to do with the electronics of a motor :D
     
  7. brian11to1

    brian11to1 Senior Member

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    Check the valve springs... if you have dual valve springs its more than likely an ITR head. If not, its a B16 head...
     
  8. j954drgsr

    j954drgsr Member

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    always tought all doch vtec in. valve spring are dual but only type r ex. valve spring are dual.
     
  9. hybrid89

    hybrid89 thistownsucks...

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    the -3 and -4 are the location were it was manufactured. 3 should be japan, I think 4 is europe.
     
  10. Bl6CRX

    Bl6CRX Senior Member

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    Also, they are marked with some green paint or something. Look to the left rear section of the head between the distributor bracket and the valve cover. There should be a green mark located there. I've heard this is the mark that the factory uses when they choose which b16 castings will be built to type R specs.
     
  11. xj0hnx

    xj0hnx I wanna be sedated VIP

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    Not really, my B16A is PR3-4 my friends B18C6 is a PR3-3, both made in Europe, well at least for Europe.

    In all my lookings into the PR3-X, it has been decided by myself and a few others that there is no real corellation(sp) between the head and the markings, as I have seen both ITR, and B16A with the same stamps.

    Look for dual exhaust springs, the green marking around the distributor, and the rings at the end of the cams.
     
  12. breed

    breed Senior Member

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    ok, it has a full crower valve train and it did not came with cams. how do i know if its a type r
     
  13. xj0hnx

    xj0hnx I wanna be sedated VIP

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    If it has a Crower valvetrain, and didn't come with cams, who cares if it's a Type R head?
     
  14. breed

    breed Senior Member

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    i heard that type r heads flowed the best out of b16, and b18c1. also it costs more
     
  15. hammerdgolfer

    hammerdgolfer Senior Member

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    thats becaus a type r head is a b16 head that is port and polished, also has lighter valves, better valve train, dif rocker arm assembly, and of course the cams are agressive, and a better IM
     
  16. rcoolb2002

    rcoolb2002 Member

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    The type R head has different intake and exhaust ports? I always thought the castings were the same, just the valvetrain was different.
     
  17. Bl6CRX

    Bl6CRX Senior Member

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    The casting is the same, the head is then hand ported.
     
  18. xj0hnx

    xj0hnx I wanna be sedated VIP

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    It is the same, it is lightly polished, not ported.
     
  19. nfn15037

    nfn15037 Senior Member

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    OK, no more of the "I heard" crap, either you know or you don't. Don't post conjecture or hearsay guys, that is where misinformation comes from.

    It is ported 25mm into the ports, not a huge deal IMO. The rockers are the same but the LMAs are different on ITRs.
     
  20. breed

    breed Senior Member

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    okay well all i wanna know is if you can tell by any markings on the head if it's a type r cast or a b16. i dont really care about the internals because there aftermarket anyway.
     
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