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D16A1 VTEC upgrade

Discussion in 'HYBRID -> ED-EF / DA' started by klyph, Sep 9, 2006.

  1. klyph

    klyph Dismember VIP

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    Hey I have a D16A1 from an 89 integra. I was wondering if anyone knows what is involved in upgrading to a vtec head or if this is even possible. I've seen kits for ls/vtec upgrades and was wondering if something similar is possible for a D16A1.
     
  2. lil_red_rex

    lil_red_rex i do body work!

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    sorry dude...this has been asked alot.....the d16a1 is like a motor of its own....d-series trannys will work with it and the exhaust manifolds....but the head and block are manufactured with differnt bolt patterns and coolant passages....so in easy words...no....cant be done....
     
  3. klyph

    klyph Dismember VIP

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    Yeah I kinda figured. Seems like they make lots of upgrade stuff for everything but what i have. :(
     
  4. Mr.Gerbil

    Mr.Gerbil Check your six

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    actually the only transmissions that will work with it are the CG transmissions that come with the A1 and the 4wd wagovan transmission out of an 84-87 wagovan.

    Headers from single cams dont work without modification either and Vtec heads especially dont work.
     
  5. lil_red_rex

    lil_red_rex i do body work!

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    are u fuckin serious.....headers from a single cam wont fit? why not they are d-series kid!!!! when u do a dohc swap into a crx or civic and u use sohc headers how do they not fit....u espicially cant tell ME they wont fit for the reason that i used them onmy swap this weeked...:owned:
     
  6. Mr.Gerbil

    Mr.Gerbil Check your six

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    So how did you make up for the bend that goes into the oil pan? Did you grind out the ports on the manifold? They dont line up properly with the DOHC heads. If you put the DOHC gasket up to the SOHC manifold its slightly off.

    Ive tried this before and it didnt work without extensive modification to the whole thing. The D16a1 is a whole different breed of d series and most new stuff will not work with them. Trust me, i own two of these older d series and a few newer SOHC motors.
     
    Last edited: Sep 10, 2006
  7. lil_red_rex

    lil_red_rex i do body work!

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    u want pics asshole?
     
  8. klyph

    klyph Dismember VIP

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    Ya, whoah guys. Just askin a simple question. No need to threadjack it into a pissing contest. Jeez.
     
  9. Mr.Gerbil

    Mr.Gerbil Check your six

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    Notice his age.

    Thank you. Im done.
     
  10. lil_red_rex

    lil_red_rex i do body work!

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    my age has nothing to do with it....and im not a noob to shit....ive been swapping shit since 10 years old i know my shit and to prove ur dum ass wrong here is a pic of a d-series header on a dohc d16
     

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  11. Mr.Gerbil

    Mr.Gerbil Check your six

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    Thats a newer DOHC ZC motor, at least the head is anyways since the valve cover bolts are on the outside. I dont know if you can swap the newer DOHC heads for the old ones but i dont know why you would. Looks to me like you used the down pipe from the old DOHC manifold, but the top could be SOHC and if it is, your ports arent lined up properly. Im talking about D16A1s here. Not newer ZC's.

    What i used was a SOHC ZC manfold (the whole thing) which was 4-2-1 and it didnt work since the bend at the bottom was too much of an angle, so it bent up into the oil pan. Btw, whats with the hostility? My remark about your age is that your acting just like a 16 year old. Also, could you please point out where i said they dont fit? I said they dont work properly without modification. Thank you.
     
    Last edited: Sep 11, 2006
  12. 1gcvcb18

    1gcvcb18 New Member

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    Not even the y8 head or b series fits?
     
  13. jlicrx

    jlicrx Senior Member

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    the SOHC exhaust manifold/header will bolt right up, however the ports do not align - not a big deal - you can either grind out the header to match the head or just leave it - we have run them both ways and it doesn't seem to make a whole lot of difference either way - maybe a slight increase in power with it port matched, but you will never notice it in just driving it - here is a picture of the D16A1/DOHC ZC exhaust gasket on the SOHC header showing the amount of mismatch
     

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  14. lil_red_rex

    lil_red_rex i do body work!

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    yes it is as a matter of fact
     
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