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Is my H22A jdm?

Discussion in 'Prelude' started by chaindtoarock, Dec 4, 2006.

  1. chaindtoarock

    chaindtoarock New Member

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    I recently bought a H22a throught H-motors. I am wondering if there is a way to visually determine whether the motor is jdm or usdm and if it is 92-96 or 97-01. I was under the understanding that it was in fact 92-95 jdm vtec. I know its vtec, but I wanted to be sure it was 92-95 jdm. Can I reference the number on the block? I also want to know if I have the right tranny. Auto tranny in it, code is MP1A. Is this the right tranny for an h22a? Whats the difference b/w this and tranny for f22 or is there a difference?
  2. AHHVTEC

    AHHVTEC Well-Known Member

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    well if it says h22a its jdm if it says h22a1 its not
  3. chaindtoarock

    chaindtoarock New Member

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    Ok, so tis definitely jdm, that was easy. Do u know how to tell the year?
    Or the tranny?
  4. AHHVTEC

    AHHVTEC Well-Known Member

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    yea if is a obd1 its 1993-1996 97+ will be obd2
  5. egoSH

    egoSH New Member

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    Prelude SI 92-96 MP1A
    Prelude SI 92-96 MP1B
  6. chaindtoarock

    chaindtoarock New Member

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    How do I tell if it is obd1 or 2 if I dont know the year for certain? The motor is already in.

    Also the tranny is shifting pretty hard at low speeds, is this just the nature of this tranny (MP1A) with the torque of the h22a or might I have a loose motor mount, or worse a bad tranny? When I am slowing down it drops gears at about 5-7 mph and it is a pretty hard shift. When accelerating quickly it is nice, but going up the gears more slowly the shifts feel like a bad shift with a manual tranny.
  7. egoSH

    egoSH New Member

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    Sounds like a bad trans to me, had the same thing happen in an older car i had and after about a month of 2 hr drive to work and 2 hr return trip i lost 4&5th about 45 mins into the drive home one day. . . drain your tranny fluid and look for impurity's maybe? i figure its cheap and once u rule out the tranny being bad you can stop sweating for a little bit
  8. chaindtoarock

    chaindtoarock New Member

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    I just replaced the trans. fluid and it looked ok. Im thinking is a bad tranny. What I am looking at to convert to manual? What tranny etc.
  9. chaindtoarock

    chaindtoarock New Member

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    I looked at the tran specs page. Is it worth the money to get the lsd if the car is not going to have crazy hp/torque. Will not be racing, just a daily driver.

    Will I have change or adjust anything other than the tranny itself and running the pedal?

    Im still not sure whether it is 92-96 H22A or 97+ H22A so I dont know whether to use M2B4 or M2Y4. I dont know because I was told it was to be a 92-95 H22A when I purchased the motor, but after the motor was installed I am getting an engine code that says ABS not found (or something like that). 92-96 didnt have ABS, right? So is it possible I got a 97+ H22A.
  10. egoSH

    egoSH New Member

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    92-95 is gunna have 1 o2 sensor 96+ is going to have 2 o2 sensor's iirc

    H22 Honda Prelude VTEC 1992-1996
    H22A1 Honda Prelude VTEC (USDM) 1993-1996

    H22 Honda Accord SiR 1994-1997
    H22A1 Honda Prelude 1997-1998
    H22A Honda Prelude SiR (JDM) 1997-2001
    H22A Honda Prelude 1999-2001
    H22A Honda Prelude Type S (JDM) 1997-2001

    H22A4 Honda Prelude (USDM) 1997-2001

    I put 2 in bold because u said earlier that it def just said h22 right ? no a or any letter number combinaition after the h22 right ? the 3 in bold are just the h22a, but all are 97+
  11. egoSH

    egoSH New Member

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    and as far as LSD >. . i have no idea i haven't had the time or patientence to read about it lol, just working on building my new h22 block
  12. chaindtoarock

    chaindtoarock New Member

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    No, it says H22A on the block, so is it 97+?
  13. powerdriverh22

    powerdriverh22 Senior Member

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    on the head there are things that look like clocks and those will tell you the year and month etc
  14. powerdriverh22

    powerdriverh22 Senior Member

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    h22a means jdm h22a1 is obd1 usdm and h22a4 is obd2
  15. daveyboycd6

    daveyboycd6 New Member

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    there is a stamping in 3 separate circles like in a clock style with arrows pointing to day, month, year. for manufact date, cant member where i saw it tho, im sure someone remembers
  16. powerdriverh22

    powerdriverh22 Senior Member

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    they r on the head
  17. chaindtoarock

    chaindtoarock New Member

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    haha, thnx powerdriver22 Ill check it out
  18. reikoshea

    reikoshea HS Troll...And Mod Moderator

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    yuppers, on the head behind the exhaust (or just above)
  19. rich045

    rich045 New Member

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    you can also tell by the dizzy, on the obd1 h22a you could adjust the timing (the holes for the dizzy are oval) and the obd2 h22a the timing is set, you cant adjust it... which kinda sucks
  20. Nickg4c

    Nickg4c Member

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    Yea, I noticed that on my obd2 h22, We went to mess with the timing and found that only two of the holes were oval, so we couldn't adjust it. Any idea why that is?

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