DOHC ZC Issues(my new motor)

2

Comments

  • I'm guessing you have already checked, but maybe where the idle is set and the timing?
  • Can't seem to get my timing into spec. hmmm
  • You didn't put the timing belt a tooth off did ya???? :lol:
  • HAHAHA. No it's perfect, which is kinda bothersome. can't turn the dist far enough to get it in time. :evil:
  • Here it is after the swap :D :D Want to do the valve cover in a dif color though.
    329.jpg
    330.jpg
  • What aftermarket header are you running with that? I thought a header doesn't clear some 4wd stuff so us RT4wd couldn't use them????

    Looks good though... I always liked ZC's :D
  • Thanks mang. :D Using a 4-1 header with some custom hammer work, lol :D Still hits a bit, just need to do some more custom work. Just been so busy trying to get it to run right, which i fixed this morning :D :D :D Damn wiring!!! :evil:
  • what was it the cyl sensor?
  • Had the wiring at the distributor backwards. Both sensors in the dist have a resistance of 350 ohms, so the computer didn't set a code. They were just sending mixed signals which made the timing impossible to bring into spec. Runs great now, but want to make some solid motor mounts to better take advantage of the torque :shock: :D
  • Had the wiring at the distributor backwards. Both sensors in the dist have a resistance of 350 ohms, so the computer didn't set a code. They were just sending mixed signals which made the timing impossible to bring into spec. Runs great now, but want to make some solid motor mounts to better take advantage of the torque :shock: :D

    thats great man, you will love this motor, its been my favorite for years. the zc dohc to me has always felt more peppy than the ls, its got that sports car power band rather than just a flat all tq low rpm motor. i always want more with the ls, but the zc has got the extra rpms i like to have + the wayyyy better gas milage. its looking good your car! hope tou have a blast with it! :wink: :D
  • HaydzHaydz Moderator
    But doesn't the LS gearbox have less desireable ratios? I would think that would be why it doesn't feel as peppy.
  • Haydz wrote:
    But doesn't the LS gearbox have less desireable ratios? I would think that would be why it doesn't feel as peppy.

    i wish that was the case, but ive had the b16 trans on ls before also the b18 gsr trans and it just didnt rev high enough to feel like the dohc zc. ive put the ls trans on a b16 and it felt great, shifts were out of the vtec range at times but a chipped ecu changed all that. chipped ls is a little to scary for my taste, you gotta put alot of money in the motor to rev high safely. zc on the other hand rev cut on my pm7 was 7800, i have beet the hell outta the zc and 100k mile rebuild, the motor was still clean, bearings were reuseable. ls rebuilds, higher rpms really wore the bearings. maybie just me but i fell in love with the honda motor because of the past 7000 rpm rev's. ls is a great motor dont get me wrong, but i just dont use them in my own cars anymore. stock zc to stock ls, zc always won the race dx trans si trans or zc trans! i vote dohc zc all the way!

    if ya dont have the cash for a b-vtec zc is the way to go. this is just my opinion though. :D
  • Were the PS pumps/brackets different between the D16A6 and the ZC?
  • HaydzHaydz Moderator
    I know between the SOHC ZC and DOHC ZC they were different, the D16A6 should be much the same.
  • Yes they were dif. Had to use the p/s pump and bracket from the ZC. Was able to use my stock A/C bracket and pump :D Lovin this thing!!!
  • So the D16A6 PS pump won't work on the ZC bracket? I'm thinking of getting a ZC soon and mapping out what I need to look for. I guess I could just put a non-power steering rack in :lol:
  • YA you need the p/s pump and bracket from the zc. That's for the dohc. Other than that it's a pretty straight forward swap. My solid motor mount is almost dry, almost time to put it in :D
  • Did you have to trim the supports on the underside of the hood to clear the DOHC valve cover?
  • Nope, fits like a glove :D :D
  • You replace your headgasket?? I tried to get the HKS metal for my ZC but they are backordered two months, so I bought a Cometic one. Any pro's/con's with Cometic???
  • Idk for sure, i know with a metal one that is a bit thinner you could boost your compression up. And one thicker would of course lower it for a better boost app. I just went with a stock replacement for now.
    Still have a few things to do still, my injector o-rings are now leaking abit so now i have a nice fuel smell coming from the fuel rail. Stinks pretty bad!!!
    My suggestion is to give yourself a good weekend to do this swap. With the exception of my mixed up wires it took me from 745am till 6pm on a sat to knock this out. Working strait through everything, and i was in my shop with a lift and every tool i needed.
  • I've swapped many ZC's before, usually takes me a day. Never used Cometic before, I usually use the HKS gaskets. Don't want to tear the head off when its in the car if you know what I mean. If I didn't have to wait for parts I would probably have my ZC in by the meet at Edgefield, still pushin' as hard as I can to get it done though.
  • ^.^ you should get up a video man.
  • Slammedtallboy- Did your ZC intake mani have the mounting for the FITV? I have no where for it off the A6... I've heard you can just leave it unplugged and it won't set off a CEL. I don't remember having to deal with a FITV on any other A6 motors, I know my CRX's didn't have it. Maybe it's year specific or model specific? Anyone have some experience??
  • The only thing mine didn't have a spot for was a vacuum idle adjust on the throttle body. Just took the one off my A6 and put it on in place of the other. Thats the only issue as i can remember, maybe dif cause mine is an 88?
  • skinnyskinny Senior Wagonist
    Who knows our 88's are the red headed step childs of the wagons, well next to the DX :lol: If you ever get that bad boy to obd1 hit me up and we will get it tuned.
  • skinny wrote:
    Who knows our 88's are the red headed step childs of the wagons, well next to the DX :lol: If you ever get that bad boy to obd1 hit me up and we will get it tuned.

    Why don't you set me up with an obd0 PM6 with PM7 maps????? obd1 tuning is for the simpletons,,,,, turboEdit FTW!
  • skinnyskinny Senior Wagonist
    Done. I have wensday this week off if you wanna come by and get it. I also have a chipped PM6 for sale I could work you a deal on. 8)
  • Come-by for me means a 6 hour ride down to Salem! Why don't you come to me... sacrifice for the win!! LOL
  • skinnyskinny Senior Wagonist
    Well if your willing to buy the ECU I will bring everything I got and we can make a day of it.
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