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Telling B16 motors apart?

Discussion in 'General Tech and Maintenance' started by d2b, Oct 18, 2005.

  1. d2b

    d2b Junior Member

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    Hello i just wanted to know how can you tell the jdm b16a1 motor and the jdm b16a2 motor apart, visually?

    thanx
     
  2. jamesA

    jamesA Well known pissed off telephone guy VIP

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    The b16a2 is a USDM engine only. It ONLY came in the USDM 99-00 Si and Canadian SiR's. So, if it says b16a2 on the block (the stamp is on the distributor side of the block, in the front below the head), then it's a USDM engine.

    I'm not sure if the b16a1 will have b16a1 stamped on the block though. Never seen one up close.
     
  3. d2b

    d2b Junior Member

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    yeah i know but there are 2 different jdm b16 motors.

    there is the jdm b16a1 which i believe came in 88-91 civics and crx's, and there is the jdm b16a2 which came in 92-95 civic sir II's. The b16a2 has 10 more hp.

    what i want to know is how to tell these apart?
     
  4. erebunicrx

    erebunicrx my name is Dale

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    well the head always has the date stamped on it on the exhaust side. also they are different obd's. if they have the same plugs as yours its the same obd
     
  5. eg6sir

    eg6sir Supa Mod Moderator VIP

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    its not a b16a2....its just a b16a....no number afterwards...on the sirII the VTEC will be bigger than the DOHC and on the sir b16a1 the other way around
     
  6. VTECPOWER

    VTECPOWER Senior Member

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    For the obd1 jdm b16, the name on the block is just b16a, there is no number, only the b16a2 came in the usa, the engine your thinking of is the b16a SiR 2.
     
  7. confusatron

    confusatron Senior Member

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    I have a B16A from the Civic SiRII (92-95), and that one has B16A stamped on the front passenger side of the block. I don't know about the 1st generation B16A, I've never seen one.
     
  8. SaMMaE01

    SaMMaE01 Member

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    Dosen't The JDM XSi Integra come with B16 also? I may be wrong
     
  9. kyleirwin

    kyleirwin Retired OG

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    look at the serial numbers. the first gen (b16a1 as you're referring to it as) will start with a 1. the second gen will start with a 5.
     
  10. nightshift

    nightshift Member

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    where exactly on the head is the date stamped
     
  11. d2b

    d2b Junior Member

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    and where does the jdm sir II motor redline at? i know the usdm sir is 8200, i think the jdm one is 8400 isnt it?
     
  12. VTECPOWER

    VTECPOWER Senior Member

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    JDM is 8200, and the 99-00 civic si b16a2 is 8000 redline.
     
  13. drpenguin

    drpenguin Senior Member

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    i could swear that my b16a has a 1 after the a
     
  14. VTECPOWER

    VTECPOWER Senior Member

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    That's because it does, because it's JDM y0. No seriously, there is a "1" after it.
     
  15. kyleirwin

    kyleirwin Retired OG

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    only the "one million series" first generation jdm b16's had a 1 following the A. most first gen. b16's were just stamped with "B16A"... i've seen quite a few first gen jdm b16a's, but never a b16a1. they're very rare.
     
  16. confusatron

    confusatron Senior Member

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    its on the lower left side of the front, right below the "B16A"

    8800 rpm or so I've always read. But you ain't gonna rev it that high unless you're insane. It makes peak power in stock form at around 7200 rpm if I remember correctly. If you modify the shit out of it you can make it rev into the 9000's and make better power up there, but not stock.
     
  17. kyleirwin

    kyleirwin Retired OG

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    no that is where the engine code and serial number are stamped on the block. he's asking where the year it was cast is stamped on the head. and it's not actually stamped, it's part of the casting. it's right above the header. hold on... i'll go take a pic of a head i have in a minute.

    EDIT:
    [​IMG]
    you can see above that this head was cast in '90, according to the mark inbetween the 1st and 2nd exhaust ports on the distributor side.
    no. as already stated in this thread, b16a's stock rev limit is right around 8200.
     
  18. D See 2

    D See 2 Senior Member

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    From what I recall, the first gen B16s that started with a 1 were from the JDM Integra XSi. The first gen B16s that started with a 5 come from the Civic/CRX SiR. So basically, the serial number denotes what car it came from not what year it was manufactuerd.

    Yes, some do. It's the only exception to the "there's no number after the letter on JDM motors" rule.
     
  19. kyleirwin

    kyleirwin Retired OG

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    no, on first gen b16's out of 88-91 civic's and crx's the serial started with a 1. 2nd gen b16's from 92+ civic's started with a 5.
     
  20. spectacle

    spectacle Senior Member

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    so how about b16a3 ???? [​IMG]

    j/k
     
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