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b18 or b21?

Discussion in 'Integra' started by mountainracer1988, Oct 24, 2008.

  1. mountainracer1988

    mountainracer1988 LS_TUNER

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    Ok guys whats a better motor as far as durability and power should i swap my b18a1 with the prelude b21 and will it bolt to my ys1 tranny?
     
  2. eg6sir

    eg6sir Supa Mod Moderator VIP

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    the b21 and b18 have nothing in common.. didnt we tell you that in your other thread?? what makes you think this will work?
     
  3. AHHVTEC

    AHHVTEC Well-Known Member VIP

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    in my opinion thats the worst honda motor ever made, and it would have to be 100% custom job to get the b21 in there. just stick with the b18
     
  4. eg6sir

    eg6sir Supa Mod Moderator VIP

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    its not an opinion.. its a fact
     
  5. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

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    i wouldnt say WORST honda motor...i mean...there were those accord v6 motors that had problems constantly overheating......and...ummm....then the b21 and b20a....okay so its pretty bad.
     
  6. eg6sir

    eg6sir Supa Mod Moderator VIP

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    all i remember is my friend that used to live down the street from my mom had a 90 Si and it was in the shop constantly for oil leaks.. those cars suck!
     
  7. mountainracer1988

    mountainracer1988 LS_TUNER

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    ok ok you dont have to get pissy about it you said they were not completely alike thats why i asked about the trans i didnt know if the bell housings were the same sorry for asking a question.
     
  8. spaded

    spaded New Member

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    b21= not a real B series, thats like the D16 twin cam, its just not the same, if you want more power, switch to a B20, but it also depends on what your doing to the vehicle,a B20 frank is a nice setup for a teg
     
    Last edited: Oct 24, 2008
  9. mountainracer1988

    mountainracer1988 LS_TUNER

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    my friend said a b20 with a GSR head would be pretty sick
     
  10. spaded

    spaded New Member

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    yeah thats a b20 frank, its setup same way really as an LS/VTEC, but i forget which one does which since theres two different b20's ones good for a turbo, ones good for all motor, both are very potent motors, but a b21 is useless, my friend has a prelude that they came out of but it sucks hardcore, on top of that they pretty much bolt right in to an integra
     
    Last edited: Oct 24, 2008
  11. jjsJDM

    jjsJDM New Member

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    B21 Frankenstien

    I would imagine that the B21 has low compression pistons wich would help make it gutless for it's size in stock form.

    With a head swap and a turbo it SHOULD make a good frankenstien, more displacement should mean it would spool slighly faster than a smaller moter and have a little more tourqe to help compensate for Turbo Lag...

    No replacement for displacement...
     
  12. BrutalB83

    BrutalB83 Brutal Moderator Moderator VIP

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    Why do you say this?
     
  13. spaded

    spaded New Member

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    i was under the impression that the B20 bottom end will fit on a VTEC with no more issues then any other LS/vtec set up
     
  14. BrutalB83

    BrutalB83 Brutal Moderator Moderator VIP

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    The B20 from the CR-V will work with VTEC heads. The B20 and B21 from the 88-91 Preludes are completely different and cannot be used in hybrid engine setups...
     
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