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91 prelude si engine swap?

Discussion in 'Prelude' started by ride_hard12, Aug 29, 2006.

  1. ride_hard12

    ride_hard12 Chris

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    hi i just got a 91 prelude si with the four wheel steering, and its got a b21 in it that seems to be burnig more oil than gas. i want to just get another engine and put in it because this one has alot of miles. but i dont know if i want to put another b21 in if they are notorious for burning oil. can somone tell what i can put in and how? please, thanks alot!can i put in a b20 and if so what do i have to change to get it in there, or can i put a bigger engine in it?
     
    Last edited: Aug 30, 2006
  2. Sunburn

    Sunburn New Member

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  3. gptsolja

    gptsolja New Member

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    i'd just get you another b21 man...thats goint o be tha easiest thing to do....i got a 89 si wit tha b20a5 in it and i'm wantin to do a h22 swap put thats really time consuming...anyways keep tha b21 do you can make good power off that motor you just got to look hard for performance parts but they're out there
     
  4. dickosenior

    dickosenior New Member

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    get a b20a. JDM and doesn't burn oil.​
     
  5. ride_hard12

    ride_hard12 Chris

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    what do i need to get to fit in a b20? a new ecu, engine mounts, nething?
     
  6. Sunburn

    Sunburn New Member

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  7. gptsolja

    gptsolja New Member

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    yea

    yea your right but tha h22 swap is worth tha effort though.....sunburn your right about tha jdm b20....my oppoligies
     
  8. Sunburn

    Sunburn New Member

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    no sweat man...

    I'm going H22 3rd gen for next summer... git the engine and turbo already....

    shoppin for a clean 90-91 rightnow!!!

    I got in on the group buy for mounts


    there should be a sticky thread with 3rd gen swap info ect.... funny, seems like there are soooo many 3rd gen heads on every prelude site....
    gotta love that car!!!

    :)
     
  9. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

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    because the blocks are crap and the heads make it seem like its impossible to float a valve.
     
  10. Sunburn

    Sunburn New Member

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    what engine are you talkin about H22 or B20?
     
  11. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

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  12. Sunburn

    Sunburn New Member

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    I'm sorry you are wrong.. B20 is SOLID!!! closed deck and takes abuse! I put 12lbs on a stock block with no issues. The only thing that sucks is the lack of aftermarket... -but there are people makin 300+ to the wheels on this block. great engine IMO
     
  13. stevenh_3

    stevenh_3 New Member

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    what will a turbo do to a 1990 prelude 2.0 si
     
  14. Sunburn

    Sunburn New Member

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    well your going to spend a decent amount going turbo... If you are not mechanically inclined I would sugest H22 swap... -that will run about 3G before it is said and done.

    there are people with turbo 3g running anywhere from 5lbs to 25lbs of boost... all depends on how deep your pockets are. My 3g ran high 12's with tons of work and $ into it
     
  15. ride_hard12

    ride_hard12 Chris

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    so i dont need anything special as far as swaping my b21 to a b20 then?
     
  16. Sunburn

    Sunburn New Member

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    no
     
  17. eludethis

    eludethis Junior Member

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    hmmm... b20 swap. i have that. first of all if you are getting the JDM B20A then there are some things you need to change. first you will need to use your B21A1 intake mani. this is because your car has an egr and the B20A does not. second is the ex mani. use your old one. third is if the B20A had an auto tranny on it then you will need to use your B21A1 flywheel. fourth, also if it was auto then you must use your old coolant pipe that runs across the back of the block. this is because on autos they made it longer. on manuals shorter because of the shift linkages. don't throw away your B21A1 ex cam. put that in your B20A, trust me!anyother Q's just pm me.
     
  18. naman

    naman New Member

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    91 b21 to a H22

    I was wondering if anyone could tell me what I would need( basics) to swap a 91 b21 to a H22 in a 91 Honda Prelude Si 4WS
     
  19. eludethis

    eludethis Junior Member

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    ^mounts (AZ RACE), axles (AZ RACE), H22 obd1 ECU, '92 up shift linkage and shifter assembly, time & patience if you are a novice, and lots of beer.
     
  20. naman

    naman New Member

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    how much would that cost(roughly) with out the price of the engine???

    Thank you for you help by the way
     
    Last edited: Oct 24, 2006
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