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Thread: B21 Header???

  1. #1
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    B21 Header???

    Sorry guys. I am noob when it comes to "Ludes" Been playing with D 's , B's , and F's. This is my first time with the Funky B21's. Any help so far would be great. Thanks



  2. #2

    Joay's Avatar
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    Re: B21 Header???

    Chikara and Pacesetter are the only two I know of that make headers for the Prelude B20/B21. You'll find a lot more information about BA Ludes at Prelude Power though.
    The second-generation Preludes are the ones that share engines with 86-89 Accords.

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    Re: B21 Header???

    So what you are saying is that the B20a engine will also fit the B21???

  4. #4


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    Re: B21 Header???

    don why are you asking prelude questions on 3geez.com? you need to be on pp

    go back to d-series TROLL!
    dead white and blue

  5. #5

    2ndGenGuy's Avatar
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    Re: B21 Header???

    The B20A engine will fit the B20A better.

  6. #6
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    Re: B21 Header???

    Quote Originally Posted by stat1K View Post
    don why are you asking prelude questions on 3geez.com? you need to be on pp

    go back to d-series TROLL!
    Have not been on D series in years.. But thanks

  7. #7


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    Re: B21 Header???

    ok ok onecamonly sorry, i just remember you from d-series lol... love your sedan!
    dead white and blue

  8. #8

    Joay's Avatar
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    Re: B21 Header???

    Quote Originally Posted by SOHCinWA View Post
    So what you are saying is that the B20a engine will also fit the B21???
    Yeah the JDM B20A (87+ Prelude B20A, not the Accord B20As we have at this site) and USDM B20A3/B20A5/B21A1 can use the same header I'm pretty sure. I haven't owned a Prelude for a couple years so corroborate that at PP.

    [Edit] The B21 has one oxygen sensor, whereas the B20AX has two. But the flange is the same so it'll bolt up.
    Last edited by Joay; 10-25-2009 at 12:19 PM.

  9. #9
    3Geez Veteran ghettogeddy's Avatar
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    Re: B21 Header???

    by pp he means www.preludepower.com

  10. #10
    3Geez Veteran Civic Accord Honda's Avatar
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    Re: B21 Header???

    pics of said sedan.

    1988 Honda Accord LX-i Coupe 123k miles.

  11. #11
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    Re: B21 Header???

    Since I dont have enough posts, I cannot post pics yet..

  12. #12
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    Re: B21 Header???

    I will try again later

  13. #13
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    Re: B21 Header???

    Ok... Here are some pics of my sedan that my wife races..












  14. #14
    2.0Si User cubert's Avatar
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    Re: B21 Header???

    Badass little car right there

    The header is a work of friggin art...

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    Re: B21 Header???

    mmm carb'd civic running great times!

    btw love the hot pink, i haven't seen it since it's been pink lol... diggin it for sure.
    dead white and blue

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    Re: B21 Header???

    Thanks for all of the comments about "Pinky"... It has been a long road. And still going forward with the f22 project.

    But I am just trying to get info on my daily driver. Hopefully the b20 header will fit my b21.
    Thanks again everyone

  17. #17
    3Geez Veteran Civic Accord Honda's Avatar
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    Re: B21 Header???

    nice!!!! <3 pink too!
    i found your thread shortly after asking over on hondabuild about hte carbed d thats pretty sick man...

    what are theses F plans i here about?

    1988 Honda Accord LX-i Coupe 123k miles.

  18. #18
    2.0Si User cubert's Avatar
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    Re: B21 Header???

    Quote Originally Posted by Civic Accord Honda View Post
    nice!!!! <3 pink too!
    i found your thread shortly after asking over on hondabuild about hte carbed d thats pretty sick man...

    what are theses F plans i here about?

    If i remember correctly, its N/A with lotsa lotsa power

  19. #19
    3Geez Veteran Civic Accord Honda's Avatar
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    Re: B21 Header???

    Quote Originally Posted by cubert View Post
    If i remember correctly, its N/A with lotsa lotsa power
    Do Like!!

    1988 Honda Accord LX-i Coupe 123k miles.

  20. #20

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    Re: B21 Header???

    That is one of the coolest engines I have ever seen.

  21. #21
    LX User LX-i's Avatar
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    Re: B21 Header???

    Quote Originally Posted by SOHCinWA View Post
    Since I dont have enough posts, I cannot post pics yet..
    sorry this is WAYYY off topic but....

    YOU HAVE A GMC TYPHOON?!
    does it look good? run?

    my god do not ever sell that truck.

  22. #22
    LXi User Hondamonster's Avatar
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    Re: B21 Header???

    ok here's the deal- for the third gen prelude b20 (b20a b20a5 b21a b21a1) everything externally will bolt up. the difference will be in the o2 sensor bungs. 88-89 preludes are obd0 and have two single wire o2's up on the header section. 90-91 preludes are obd1 and have a single four-wire o2 between the flex pipe and the cat. dimensionally, they're the same. all you'd have to do is either convert the o2's. basically speaking, only the differences between the b20's and b21's is the bore and the slight manifold differences related to the obd system of the respective year.

    proof of above knowledge/things i made up


  23. #23
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    Re: B21 Header???

    Quote Originally Posted by LX-i View Post
    sorry this is WAYYY off topic but....

    YOU HAVE A GMC TYPHOON?!
    does it look good? run?

    my god do not ever sell that truck.
    Yes I do have a Typhoon. 99k miles on a 92. Perfect in and out.

    Quote Originally Posted by Hondamonster View Post
    ok here's the deal- for the third gen prelude b20 (b20a b20a5 b21a b21a1) everything externally will bolt up. the difference will be in the o2 sensor bungs. 88-89 preludes are obd0 and have two single wire o2's up on the header section. 90-91 preludes are obd1 and have a single four-wire o2 between the flex pipe and the cat. dimensionally, they're the same. all you'd have to do is either convert the o2's. basically speaking, only the differences between the b20's and b21's is the bore and the slight manifold differences related to the obd system of the respective year.

    Thanks ... I thought so.

  24. #24
    LX User LX-i's Avatar
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    Re: B21 Header???

    Quote Originally Posted by SOHCinWA View Post
    Yes I do have a Typhoon. 99k miles on a 92. Perfect in and out.

    wow thats crazy....i want to see pics, you should post up pics in a different thread.

  25. #25
    3Geez Veteran MessyHonda's Avatar
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    Re: B21 Header???

    sweet pics

    1989 Honda Accord LX-i
    B18c1 swap since 7/2011
    175whp and 132tq
    Redzone tuned

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