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Thread: I found the solution to the B20A "RARE" transmission.

  1. #51
    LXi User Steve_Si's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    Does anyone know how to get the bellhousing off? All bolts around the edge have been removed, and I can get a 2 to 3mm gap around the join, but can't get it apart :(



  2. #52
    3Geez Veteran 88LXi68's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    Quote Originally Posted by Steve_Si
    Does anyone know how to get the bellhousing off? All bolts around the edge have been removed, and I can get a 2 to 3mm gap around the join, but can't get it apart :(
    http://www.pauldesign.ru/honda/shopmanual/62se300.pdf
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    DX User kraftaroni's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    Get out the 30mm and turn it the wrong way! haha then you can get the bell housing off. the whole gear assy will come apart then. I've had lots of fun doing this a few times I've blown up a couple diff's not fun!

  4. #54
    LXi User Steve_Si's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    Hmmm I don't have the tools for that, i'll have to ask my friends to help next time they come over.

  5. #55
    2.0Si User SQ is the SQUAD's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    i am lost as hell here. rember back a few months ahot i started a b18a ti a20a adapter plate project. well i still have the stuff (not finished). i dissassembled my b18a tranny and the bell housing dosent match out to the a20a block no where close. i know the b18a gear box and the a20a gear box are totally different because the a20a has the big inspection plate that comes off. can someone revise this listing not using engine codes but actuall tranny codes and chasis codes. if i recall, there is a b18a that is different than out us b18a, i hope we are not getting confused
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  6. #56
    DX User kraftaroni's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    You know I have to say people seem to chime in more on this forum than any other without reading the thread! B20a jdm and the b18a are a bellhousing match on the engine to transmission mating surface. Furthermore you can attach the a20 gearbox to the b18a bellhousing.

  7. #57
    2.0Si User SQ is the SQUAD's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    now i get it. i was thinking of mating a b18 tranny to an a20 block. this is to mate a b18 tranny to a b20 block
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  8. #58
    LXi User Steve_Si's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    Quote Originally Posted by SQ is the SQUAD
    now i get it. i was thinking of mating a b18 tranny to an a20 block. this is to mate a b18 tranny to a b20 block
    Other way around. A20 tranny to a B20A block using B18A (old 3G JDM version) bellhousing.

  9. #59

    snoopyloopy's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    Quote Originally Posted by SQ is the SQUAD
    i am lost as hell here. rember back a few months ahot i started a b18a ti a20a adapter plate project. well i still have the stuff (not finished). i dissassembled my b18a tranny and the bell housing dosent match out to the a20a block no where close. i know the b18a gear box and the a20a gear box are totally different because the a20a has the big inspection plate that comes off. can someone revise this listing not using engine codes but actuall tranny codes and chasis codes. if i recall, there is a b18a that is different than out us b18a, i hope we are not getting confused
    the b18a they're talking about here is the 130hp carbed b18a from the jdm accord, not the ls b18a from the integra. from that was said, if you get a b20a engine, you can then use the accord b18a bellhousing and bolt that to an a20a tranny and that combo will work.

  10. #60
    3Geez Veteran A18A's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    its kinda like a b20 > a20 tranny adapter :)

  11. #61
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    re: I found the solution to the B20A "RARE" transmission.

    OK so just to clarify In one post so its a lil cleaner for the newb's ie me
    what needs to be changed.......

    You mention the carbed engine, how does this effect the F.I. if any?


    _CMAC
    Last edited by Cmac; 04-09-2007 at 09:03 PM.

  12. #62

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    re: I found the solution to the B20A "RARE" transmission.

    Quote Originally Posted by snoopyloopy
    the b18a they're talking about here is the 130hp carbed b18a from the jdm accord, not the ls b18a from the integra. from that was said, if you get a b20a engine, you can then use the accord b18a bellhousing and bolt that to an a20a tranny and that combo will work.
    Exactly, there is NO Integra that came with a B18A anyway. There was a B18A1 but no B18A ever.

    In Japan, they had a ZC or the B16A. The JDM B18A is from the Accord/Vigor only

  13. #63
    2.0Si User SQ is the SQUAD's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    Quote Originally Posted by carotman
    Exactly, there is NO Integra that came with a B18A anyway. There was a B18A1 but no B18A ever.
    In Japan, they had a ZC or the B16A. The JDM B18A is from the Accord/Vigor only
    the prob with that is any honda site you go to and refet to a b18a they are going to think anbout the b18a1 that came in the 90-93 integra like i did. alot of times we might say a20a in general but mean a20a1 or a20a3 and so on. that why i said its better not to use engine codes but exact model of cars
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  14. #64
    DX User 3GCVC's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    EXL-S Manual in CHCH member should grab this if it goes cheap

    http://www.trademe.co.nz/Trade-Me-Mo...n-95082157.htm

  15. #65
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    re: I found the solution to the B20A "RARE" transmission.

    yeah but if u see the Q's & A's it says it has a a18 =( notice that most of the good cars are down chch :thumbdn:

  16. #66
    DX User 3GCVC's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    yeah but anyone could muck up a18 instead of b18 most people dont have a clue we need an engine bay pic

  17. #67
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    re: I found the solution to the B20A "RARE" transmission.

    true :o

  18. #68
    SEi User ZackieDarko's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    that does it...im moving to new zeland 1st chance i get

    you get all the good car stuff

  19. #69
    LXi User Steve_Si's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    I think I'm the only active Christchurch member :(

    I have too many 3gs as it is, gotta get rid of two soon. Gotta drag my friends over so they can swap the transmission and also remove the bellhousing from Bullard's transmission so I can finally send it.

  20. #70
    LXi User Steve_Si's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    Bullard, I would have sent this as a PM but your inbox is full:

    Well I made the mistake of trying to do it myself. Got a 30mm socket and got it all out, but was too rough with it and now it's probably useless. It just didn't occur to me that alloy would break so easily.



    I know how long you've been waiting for the right transmission, I'm really sorry to have fucked this one up. I'll go to the junk yard on Monday and see if they have one already seperated.

    The good news is they are very light without the gears in.

  21. #71

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    re: I found the solution to the B20A "RARE" transmission.

    Quote Originally Posted by Steve_Si
    Bullard, I would have sent this as a PM but your inbox is full:
    Well I made the mistake of trying to do it myself. Got a 30mm socket and got it all out, but was too rough with it and now it's probably useless. It just didn't occur to me that alloy would break so easily.

    I know how long you've been waiting for the right transmission, I'm really sorry to have fucked this one up. I'll go to the junk yard on Monday and see if they have one already seperated.
    The good news is they are very light without the gears in.
    No problem dude. This is all new to you since you never have to tear them apart lol. I know it would have been a lot easier just shipping the tranny as a whole. I cleaned my inbox out out too. Didn't realize I had so many Pm's lol. I hope they can break down a b20a tranny down for you at the junkyard. I now its a real pain trying to gut these trannys.

  22. #72
    SEi User ICEMAN707's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    Has anyone ever thought of custom made bellhousings? Wouldn't it be nice to have a new b-series transmission custom fit with a custom bellhousing instead of just an adapter plate?

    Pretty much like making a custom oil pan out of some aluminum sheet metal, same concept for making a custom bellhousing to use any gearbox you want for your car. Just gotta take transmission shaft reach and axle alignment into consideration.

    Would be awesome to have a custom fully CNC machined bellhousing, but a little custom aluminum sheetmetal cutting/welding is nice too. A custom diamondplate bellhousing for instance.

    Another option would be to cut b-series tranny bellhousings in 3/4 and weld it to the 1/4 part (the part that bolts to the block) of the stock bellhousing of your stock transmission. Although aluminum takes some skill to weld.
    Last edited by ICEMAN707; 04-14-2007 at 07:33 AM.

  23. #73

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    re: I found the solution to the B20A "RARE" transmission.

    This can probably be rewelded back if you still have the other broken parts.

    That tranny was dirty inside!!!

  24. #74
    LXi User Steve_Si's Avatar
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    re: I found the solution to the B20A "RARE" transmission.

    Yep I still have the bits that broke off, but it might not be that hard for me to find another bellhousing. The junk yard I visited last time had lots of "rare" stuff. The folding fogs, a 2.0Si Exclusive and plenty of other 3Gs.

    I'll still put the broken one in a box and stop by the post office on the way to work to find out how much it would be to send.

    And it wasn't dirty inside, i'm not sure why the oil looks like it has lots of shiney bits in it, doesn't look like that irl.

    So far this year I've ruined a F1 2.0Si and a B18A transmission :P

  25. #75


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    re: I found the solution to the B20A "RARE" transmission.

    If its hard to get the B18 housing and this is something someone wants to put effort into they could have a machine shop duplicate a bell housing. It would be cheaper than designing an original one off part for sure. Thats something i would consider if i was in a situation and carotman did his homework opening up many doors.

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