Z6 into 91 RT4wd

ee4lifeee4life Band Wagon
in Engine & Drivetrain
alright i have a 91 rt4wd first one an im inlove :)..sad story short i drained coolant and went outa town for work came home to find out a buddy drove it for about 2 hours with no coolant :( bye bye a6 she ran strong with teh 211k to..annyways im pickin up a z6 longblock today an gonna swap it in tomorrow just wonderin what exactly do i need to do the swap i read a few threads but ppl got go back an forth on how to do it. im just wondering if anyone has a step by step thread with pics an all that..all info with with tahnks guys..
«1

Comments

  • evol911evol911 familEE
    Use the A6 oil pan/exhaust/exhaust manifold to clear diff and everything else works just fine. Assuming you know how to the obd0 conversion.
  • ee4lifeee4life Band Wagon
    i kinda know how to the 0bd0 conversion but also not so much lol...could ya give me some info??
  • evol911evol911 familEE
    Check http://www.rywire.com, they have OBD0 to OBD1 conversion wiring harnesses that simplify things. If you are new to wiring I would go that route. Real simple, just need the complete Z6 and the proper ECU.... Very close to Plug n Play!
  • ee4lifeee4life Band Wagon
    im not really that new i just kinda need diagram so i know what to repin an all that...

    but thanks for the link to rywire! very helpful an thanks for the fast response
  • ee4lifeee4life Band Wagon
    wellthe plan with the z6 fell through so i just picked up a sohc zc today just wondering is the zc a strait swap?
  • evol911evol911 familEE
    Yes but you need the ECU. One sec, its only a straight swap if its an OBD0 motor.
  • ee4lifeee4life Band Wagon
    yeah its 0bd0..wait so i can run the stock a6 ecu with it??
  • evol911evol911 familEE
    The SOHC ZC is very very close to being a D16A6 or actually the other way around. ZC has a more aggressive cam which in turn requires different tuning so the ZC ECU would be the best but I'm sure you could get away with running the PM6 ECU.
  • ee4lifeee4life Band Wagon
    thanks man ur helpin alot! i jsut got the a6 all the way out an the zc should go in tomorrow or sometime this week.also picked up some other goodys :) i got some bronze hx's an a nice thule rack for it..any good sites to pick up some parts for our wagos?
  • evol911evol911 familEE
    Find the thread about joining our marketplace and you can get some really good parts. turbo-teg has a smokin turbo setup fr sale on the cheap plus lots of other goodies :wink:


    http://www.hondacivicwagon.com/bb/viewtopic.php?f=2&t=4980&start=0
  • shenrieshenrie Council Member
    No place for intermediate shaft on a z6 block.
  • evol911evol911 familEE
    shenrie wrote:
    No place for intermediate shaft on a z6 block.

    Are you sure Shenrie? I was under the impression 1.6 blocks had the holes drilled and tapped. northwest_war_wagon has a complete Z6 in his rt4wd and from what I remember he is running the intyermediate shaft. I might have to double check this...
  • shenrieshenrie Council Member
    Im not 100% no, but all the blocks Ive looked at 1.5 and 1.6 after 91 did not have the bungs. I will never claim to know all, just post my experiances, and Ive looked at a lot of blocks in the last year.

    I just sold a D15B motor cause I didnt wanna hassel with it. Hoipefully his has it since its prolly installed by now though. If they do have them, please post up the info. Specifically where the block came from if known.
  • evol911evol911 familEE
    Ok so from what I know, northwest_war_wagons Z6 had the holes drilled and tapped, it was a '95 so maybe it is just lucky if you get one that is tapped :D
  • minorobsessionminorobsession Band Wagon
    The sohc zc motor is a vtec motor, therefore you will need something to switch the vtec into operation, either a vtec compatible ecu, or ? . I believe it was msd that offered a rpm switch of some sort that guys were using. As far as I know, and have read, the only sohc motors that have the backside tapped for and intermediate shaft are the D16a6 motors. All other blocks must be drilled and tapped yourself. I've pretty much been doin the honda game since 97, so i'm not really all that familiar with them :lol: not to say we all don't make mistakes, I'd rather be lucky than good.
  • ee4lifeee4life Band Wagon
    just went out an checked my step dads z6 block that hes buildin for our cvcc project an his had the threaded holes for the half shalf...the motor came out ot his 93 ex couple
  • ee4lifeee4life Band Wagon
    and thanks again evol for the marketplace
  • evol911evol911 familEE
    minorobsession wrote:
    The sohc zc motor is a vtec motor, therefore you will need something to switch the vtec into operation, either a vtec compatible ecu, or ? . I believe it was msd that offered a rpm switch of some sort that guys were using. As far as I know, and have read, the only sohc motors that have the backside tapped for and intermediate shaft are the D16a6 motors. All other blocks must be drilled and tapped yourself. I've pretty much been doin the honda game since 97, so i'm not really all that familiar with them :lol: not to say we all don't make mistakes, I'd rather be lucky than good.


    Not all SOHC ZC's were VTEC and I would bet that most D16 blocks had the holes drilled and tapped. I'm going to go out on a limb here and say that the only thing different between D16 blocks are machining procedures and minor modifications. Thats why parts are very intechangable. I could be wrong and I'm willing to learn.
  • CharbCharb Administrator
    evol911 wrote:
    Not all SOHC ZC's were VTEC and I would bet that most D16 blocks had the holes drilled and tapped. I'm going to go out on a limb here and say that the only thing different between D16 blocks are machining procedures and minor modifications. Thats why parts are very intechangable. I could be wrong and I'm willing to learn.

    Bingo!

    I know there's differences with the Z6 and Y8 blocks as well...

    ...but really, you've come this far... why let a little tap job stop you?
  • ee4lifeee4life Band Wagon
    i didnt the guy i was buy my longblock flaked out on me so i picked up a zc
  • shenrieshenrie Council Member
    Kickass. Glad to hear that they are compatable.

    And yes, MSD makes a rpm powered switch. They have removable chips for all rpms. Pretty handy actually, but you need a relay to use them properly.
  • lucskywalkerlucskywalker Wagonist
    96-00 y7/y8 blocks are the one's with no hole's or bracket stump's, d15's from any year don't from what ive seen.
    true that there are zc's that arn't vtec, 115hp if i remember right, there are even carb model's also also if my memory serves me right, i know dohc's for shure.
  • HaydzHaydz Moderator
    ZC comes SOHC, DOHC, SOHC VTEC, Carbie, EFi, Vacuum advance etc. etc.
  • shenrieshenrie Council Member
    The wagon I got from Billboard had a ZC in it. Had a PM6 (same as d16a ecu) stamped on the bottom though, which I was told was the same as a d16a. Is that correct information?
  • HaydzHaydz Moderator
    Yeah PM6 is used for SOHC ZC and D16A6 whereas PM7 and P29 would reffer to DOHC ZC. I'm think some of those part refs are used for other similar motors as well.
  • rti intracrti intrac Senior Wagonist
    the the D16A is the same as the ZC my D16a block is pretty much exaclty the same as my ZC block same crank same markings same botl holes etc...
  • HaydzHaydz Moderator
    Just keep in mind the USDM motors have numbers after the 'D16A' part, theres many different D16As with alot of big differences. You might not be used to that dealing with JDM motors. I think most NZDM motors have the numbers though.
  • crxzc10psicrxzc10psi Band Wagon
    i didnt read the whole post but i just did a d16z6 supercharged in my wagon and kept it obdo runs like a champ.... pm me if you have any questions ill help you out from my experiances. this was all dont 3 weeks ago.
  • secretcitizensecretcitizen Wagonist
    So my question will a d16z6 work with our 4WD wagons or not?
    Are there holes for the intermediate shaft and what clutch would you use?
  • crxzc10psicrxzc10psi Band Wagon
    my wagon is a rt4wd ..everything is the same.... its the identical engine with v-tec..... not getting into details about the engine inside or anything..... you can use the stock clutch or get a 92+ flywheel and clutch its a bit bigger and will hold a bit more, but you dont have to. the half shaft bolted to my new engine. stock ecu will do fine if your staying obd0.... if your keeping it obd0 you have to make the dist from the d16a6 fit, cut the ears off and use washers.... the only thing you need to be concerned about is how your going to turn the v-tec on....its one wire to run for the cyl. to what ever your using to turn it on.....vafc will work perfectly. if you ask me detailed questions i will try to answer the best i can.
Sign In or Register to comment.

© Vanilla Keystone Theme 2025