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my new tuner

Discussion in 'Prelude' started by B20LUDE, Mar 21, 2011.

  1. B20LUDE

    B20LUDE New Member

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    hey folks im usually a classic american type guy but i just had to try my hand in this so i went out and bought a 90 prelude si b20 engine well the head is new but they dident replace the valve guide seals and well it smokes so i have to do head work anyway so i figured ide try here and see what you all told me i found a civic with a f22a running but the car isent worth anything rear ended HARD so i can get the harness and engine for 125$ but i only want to do head work sence the lower end only has 90xxx miles so my questions are. will the f22a head work on the b20 block? will i gain anything by doing this (if it does work) would i be better off putting the b16 head on the b20? im a mechanic for a living and im close friends with the guys who run my local machine shop so the work isnt anything for me to do but i would like to get the most HP possable thanks for your help also im new to the forms and idk how to do this so if it doesnt work for me but you can read this please email me at bbigc01@yahoo.com im NOT spam or a scammer please help me out
     
  2. K2e2vin

    K2e2vin Senior Member

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    Nope, F-series head doesn't work on B-series blocks.

    It's possible to do B16 head on a B20A, just haven't seen much people do it. If it's the B20A5, most people just avoid it.

    I don't really know much about those gen Preludes and their engines so hopefully someone more knowledgeable will chime in.
     
  3. dc4dude

    dc4dude Member

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    if its the factory b 20 engine, you are better off swapping out the whole thing. those early prelude engines are more of an appliance.... REPLACEABLE...
     
  4. BrutalB83

    BrutalB83 Brutal Moderator Moderator VIP

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    Yeah, the B20s that came in those cars are a completely different thing than the later B20s that came in the CR-V. The CR-V B20 blocks are the ones that you can easily swap a B16 or B18 VTEC head on to. With your engine though, it doesn't bolt up. And unfortunately, there are no other popular tuner motors that will bolt in to that chassis. Something like an H22 or B18 is doable, but it will need to be a custom deal...
     
  5. B20LUDE

    B20LUDE New Member

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    ok well let me ask this then would I gain any hp by putting on a ls/b18 non vtec head instead of getting orignal b20 head worked
     
  6. 95b16coupe

    95b16coupe New Member

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    the heads aren't compatible.

    you would be better off rebuilding that engine and getting a small turbo kit or just doing a swap entirely.

    unfortunately, if you wanted a tuner honda, that is pretty much the worst platform to start with. most people go with the civic or integra. the prelude came with a shitty motor in the u.s. and japan. most hondas had a better motor in the japanese model, so people in the u.s. pull their engine and swap in the japanese counterpart. with the prelude, it sucked in japan too so there isnt' much to swap.
     
  7. BrutalB83

    BrutalB83 Brutal Moderator Moderator VIP

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    No, those heads aren't compatible with your engine either. Like I said previously, those particular engines (some of them are 2.0s, and some of them are 2.1s) are the red-headed stepchildren of the B-series. You can't mix and match them with anything besides themselves, so B16, GS-R, LS, B20 from the CR-V, Type R engines are all off the table for building a hybrid motor...

    :werd:

    I mean, it's great that you want to get in to Hondas. Unfortunately though, you inadvertantly picked one of the worst possible chassis to start with (at least in terms of swap options, after-market availability, etc.). The people that tune the 88-91 Preludes usually do so because they like that particular version of the car and because they want to build something challenging and unique. The 92-96 and 97-01 versions are much more tuner friendly and have lots more after-market support...
     
  8. B20LUDE

    B20LUDE New Member

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    well ive always wanted the 4ws square body style. but sence its a clean car with only 90xxx miles i figured ide take it for 400bucks. if i wanted to make a good easy head swap that matches what would be the one you would look for to put on the b20 fully stock but when the head i get i plan on putting over size valves and valve springs new cams shave port and polish a header with new full cat back exhaust and a true k&n kit on it. i know that im going to gain hp by doing all of that but i want to know with out doing that what head would give the the most hp. thanks you all for helping
     
  9. BrutalB83

    BrutalB83 Brutal Moderator Moderator VIP

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    There's literally nothing that will bolt up besides other B20A heads. As I mentioned previously, there is also a 2.1 liter version (the B21A). That motor is slightly more powerful than the B20A, but the power bump comes from the displacement. The head will bolt up, but it's pretty much identical to the 2 liter version's, so no advantage to swapping.

    The stock head should work fine for the build you're planning, and it's pretty much your only choice anyway...
     
  10. B20LUDE

    B20LUDE New Member

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    well hell dosent that suck for me well off to hunting for a 2.2vtec and ecm thanks so much for all of yalls help
     
  11. 95b16coupe

    95b16coupe New Member

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    unless you like the chassis, i would suggest selling it for something more compatible to being a tuner car.
     
  12. B20LUDE

    B20LUDE New Member

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    ok here is what i have recently found a 03 honda civic 4door automatic with a e23a1 i will not keep the civic insted of my prelude so my question is how much modification would have to be dont to make this vtec engine work in my car? is the ecm compatable?
     
  13. 95b16coupe

    95b16coupe New Member

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    too much work will have to be done to make the vtec conversion worthwhile. if you want to do anything, build a custom turbo kit.

    really dude, the prelude is a shitty chassis for having a tuner car. either buy something new or just accept the fact that generation prelude sucks.
     
  14. Ludelvr

    Ludelvr New Member

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    B21A1 lude head question

    :hmm:Not sure if I should be posting here, but I have a silly question about a B21 head. I'm replacing the valve seals and noticed as I'm tearing the head down that the nuts, that the ball on the underside of the rockers sits on, are all loose. Are these suppose to be "finger tight?" Or is there a torque spec for them? Or, are they adjustment nuts for "tweaking." Any help with this would be very much appreciated as there doesn't seem to be any reference to them in the on-line shop manual I'm using. :frown:
     
  15. B20LUDE

    B20LUDE New Member

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    well folks my 91 prelude with a orignal b20 now has a vtec head out of a 93 hatch 1.6l and it runs perfectly my mini me or my frenkinstine :)
     
  16. 95b16coupe

    95b16coupe New Member

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    No it doesn't. I call :bs:
     
  17. makewheelies304

    makewheelies304 New Member

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  18. B20LUDE

    B20LUDE New Member

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    ok smart guy go to www.autozone.com check the head set for a 1991 prelude dohc 2.0l wright down the part number then and get the part number for a 1993 1.6l vtec and you will be proved wrong
     
  19. B20LUDE

    B20LUDE New Member

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    i may not know much about these hondas but well i know enough to put a vtec head on a b20 so call bull shit all you want but i have the proof
     
  20. 95b16coupe

    95b16coupe New Member

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    you're an idiot on so many levels.
     
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