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90-91 B18A vs 92-93 B18A

Discussion in 'HYBRID -> ED-EF / DA' started by pauls81sc, Aug 31, 2004.

  1. pauls81sc

    pauls81sc Member

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    I've done some searches for this but can't find the right keywords to get the answer I need.

    I just bought a B18A longblock from a salvage yard that I'm planning to swap into my 89 CRX Si. The engine was marked as a 90 Integra but I want to be sure before I get too far into this.

    By just looking at the engine, how can you tell if it's a 90-91 or a 92-93?

    Put another way: The earlier models were obd0 and the latter were obd1. GREAT, what's the difference?
     
  2. brian11to1

    brian11to1 Senior Member

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    The main differences between 90-91 and 92-93 engines where the electical connections (on 90-91 where whitish and round 92-92 they were square and gray) and lack of injector reisitor box (92-93).

    If you wanted to get down adn dirty you can look at the casting numbers on the head above the exhuast manifold.
     
  3. pauls81sc

    pauls81sc Member

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    Brian,
    Thanks for the input (seems like you're the only one that ever helps me on this forum).

    But, I'm a bit surprised. I expected there to be some extra sensors or something to distinguish obd1 from obd0 besides the resistor box and type of connectors. Are you sure there aren't any knock sensors, or some other crap like that on the obd1 type?

    As far as casting numbers go, that sounds intersting. You care to elaborate?
     
  4. CRseX84

    CRseX84 Senior Member

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    if you look on the engine code. the 90-91 b18 shuld say B18A1 and the 92-93 shuld say B18A2
     
  5. brian11to1

    brian11to1 Senior Member

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    There is no such thing as B18A2... STFU.
     
  6. Bl6CRX

    Bl6CRX Senior Member

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    not the single cam EX
     
  7. brian11to1

    brian11to1 Senior Member

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    Thanks B|6CRX... i wasnt sure.
     
  8. 92civicb18b1

    92civicb18b1 The Trisexual

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    hahaha, LMAO. that shit made me laugh for a minute.

    How are you supposed to tell if its a 92-93 or 90-01, I'm picking one up and yes I'm still buying yours, just not yet.
     
  9. brian11to1

    brian11to1 Senior Member

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    If it has the distributor on it the plus are round on 90-91 and square on 92-93... 90-91's have intector resistor boxes, 92-93 dont.
     
  10. pauls81sc

    pauls81sc Member

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    Took a look at my engine last night and the connectors are white and round = 90-91.

    :D :) :D :) :D
     
  11. brian11to1

    brian11to1 Senior Member

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    90 - 91 = 130 HP, OBD0 wooot...
     
  12. whiteLS

    whiteLS Senior Member

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    i believe a date code is stamped over the 3-4 exaust port on the head, kinda close to the valve cover. its like the second number
     
  13. 92civicb18b1

    92civicb18b1 The Trisexual

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    92-93 have 140/121 correct?
     
  14. brian11to1

    brian11to1 Senior Member

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    im thinking he's figured it out...

    92civicb18b1 yea... those figures sound good.

    94+ something like 142-142Hp
     
  15. pauls81sc

    pauls81sc Member

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    With some JE Pistons, a little increase in compression, more aggressive cams, and a less restrictive exhaust, whaddaya think it'll get? 140hp? 145? more?
     
  16. 92civicb18b1

    92civicb18b1 The Trisexual

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    More agressive cams can get u like 5-10 hp.
    Compression...maybe 5
    Less restrictive exhaust 1-2.
    Port and Polish and you'll see some better gains, near 15 i presume.

    I'm just estimating here, if i'm wrong about the gains just correct me.
     
  17. brian11to1

    brian11to1 Senior Member

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    Youre always wrong...
     
  18. 92civicb18b1

    92civicb18b1 The Trisexual

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    lol, i said correct me damnit. And I was close enough.



    O I forgot about the pistons...what compression?
     
  19. pauls81sc

    pauls81sc Member

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    Havn't decided about the compression. Will talk to the experts @ JE.
     
  20. brian11to1

    brian11to1 Senior Member

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    Compression makes a big difference y0...


    gotta get at least 11:1...
     
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