1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

what engine?

Discussion in 'Civic and CRX - EF' started by 95EGCoupeVtec, May 7, 2009.

  1. 95EGCoupeVtec

    95EGCoupeVtec SOHC VTEC at its best

    Messages:
    403
    Likes Received:
    1
    Joined:
    Aug 19, 2008
    Location:
    South Mississippi
    i just got back from florida with my brother in law. he picked up a 90 civic hatch for very cheap. so it needs a clutch no big deal. my question is the block says d15b1, and the head says 16valve. now from what i researched so far a 16 valve head is off of a dx motor and a d15b1 is from a std and is only 8 valve. now it could be that its a whole d15b1 engine with a dx valve cover, i haven't had a chance to take the valve cover off to see. would a dx cover fit on a std head? also the guy who had it before him had a 50 shot of nitrous running on the stock motor. would the stock pistons even be able to take that? its late and im tired but if anything doesnt make sense im sorry. anyone have a clue?
     
  2. jlicrx

    jlicrx Senior Member

    Messages:
    1,891
    Likes Received:
    65
    Joined:
    Jun 5, 2003
    Location:
    Colorado Springs
    the D15B1 is a 16 valve engine - the only 88-91 CRX/Civic 8 valve engine is the CRX HF D15B6

    this is a D15B1 - notice the 4 valve reliefs per piston

    [​IMG]

    this is a D15B1 head

    [​IMG]
     
    Last edited: May 7, 2009
  3. 95EGCoupeVtec

    95EGCoupeVtec SOHC VTEC at its best

    Messages:
    403
    Likes Received:
    1
    Joined:
    Aug 19, 2008
    Location:
    South Mississippi
    ok thx man u cleared it up. also, is there any difference between a dx and a std tranny? he is going to buy a clutch in a few days and needs to know.
     
  4. eg6sir

    eg6sir Supa Mod Moderator VIP

    Messages:
    21,703
    Likes Received:
    321
    Joined:
    Aug 17, 2005
    Location:
    661 BK CA
    i think the std tranny is a 4 speed
     
  5. AHHVTEC

    AHHVTEC Well-Known Member VIP

    Messages:
    13,122
    Likes Received:
    245
    Joined:
    Oct 13, 2006
    Location:
    Alabama
  6. 95EGCoupeVtec

    95EGCoupeVtec SOHC VTEC at its best

    Messages:
    403
    Likes Received:
    1
    Joined:
    Aug 19, 2008
    Location:
    South Mississippi
    ok well he has a 5 speed that's for sure. i'm guessing the block got replaced somewhere along the line with a std block. so its a dx motor pretty much. he was hoping he didn't have like 70hp lol, at least 90 is better. we gonna do dpfi to mpfi and put a d16a6 in for him eventually.
     
Verification:
Draft saved Draft deleted

Share This Page