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Swap B20A5 for B20B

Discussion in 'HYBRID -> BA-BB /CA-CD' started by Senate9690, Mar 28, 2004.

  1. Senate9690

    Senate9690 Junior Member

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    my 1988 honda prelude with a b20a5 engine just blew... i was wondering if i could put a b20b engine into it. or any engine that is on the www.totaljdm.com webpage, if someone could find this out that would be great email me at Senate9690@comcast.net thanks
     
  2. Slammed90Lude

    Slammed90Lude Senior Member

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    nope, different mounts, different shift linkage, the B20A5 is the basturd child of the b series motors- basically you're stucj with that motor, maybe boost it to make the best of it :)
     
  3. d4000@comcast.net

    d4000@comcast.net Junior Member

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    Can the B20a5 be put into a 91 Lude without a lot of problems involved? I really need some help guys. Talk to me Mine is a 5-speed with a blown b21a1 that has a hole in the block. What can I replace it with?
     
  4. tab

    tab Super Moderator

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    same thing bud. Those early b20 and b21 motors don't line up with b16, b18 or F or H series. They suck. Get another one just like it and boost it, or look forward to a lot of modifications and wiring.
     
  5. d4000@comcast.net

    d4000@comcast.net Junior Member

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    My 91 Prelude had a B21A1 engine in it & blew up. What engine can I use to replace it with? Since the 20b5 isn't that good what would you recommend?
     
  6. civicious

    civicious FüK-VTEC VIP

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    The only thing you'll be able to replace it with (within reason) is the same motor. As stated above, the B20/21A's don't mount the same as any other Honda motor. They're the bastard B-series's.
     
  7. d4000@comcast.net

    d4000@comcast.net Junior Member

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    Ok Thanks Guess I will just junk the car then as I cannot find a b21 engine anywhere. I've got the ground kit on it too. New clutch & new head & it's in very good shape. Not worth a thing wihout an engine for it.
     
  8. snoopyloopy

    snoopyloopy New Member

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    you can import or find an imported jdm b20a for the 3g prelude. or check out the h22 mounts group buy thread on preludepower.com.
     
  9. 91hondapreludeowner

    91hondapreludeowner New Member

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    also have 91 lude with blown eng

    Am I to understand, the b21A5 does not match up with any other engine,except the B20 series? Is that correct? Cause i can't find any B21a5 engines anywhere.

    the b20 should fit without significant modifications?

    thanks
     
  10. tab

    tab Super Moderator

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    All we know is what we have been told. Your gen prelude and 88-89 Accords have engines that just don't have easy swap ins. Other motors can and will fit, but just not a simple swap in. F and H series are easy swaps. B and D series are easy swaps. Your prelude isn't.

    As mentioned, an engine importer or a junkyard will be able to find which engines interchange, or how easy.
     
  11. Monkey

    Monkey monkey spanker

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    I know of a black 90-91 with a B21A1 in it, and it's a manual, but i don't know where you're at. I honestly don't know what condition the motor or transmission is in. He said he's gonna junk the car. I was thinking about ganking the engine out of it, but I don't know if i can drop it in place of my B20A5. I'm in Mississippi. It's in a small wrecker yard in the town i work in. He's also got an 88-91 Civic hatch that i'm trying to scoop up. Someone abandoned it along the interstate, and he said he needs to apply for a salvaged title. I said, "Well you better get hot, because i wanna snap that thing up, QUICK!" It's just screaming for a built H22 with possible turbo or supercharger.
     
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