Ditto Thread

[BLU CIVIC]

ok i want to get a sohc zc engine and build it up as much as possible (including transmission) and add a turbo (and quite possibly NO²)...i want to add as much whp as possible....what i need is help from everyone that has info on this subject b/c i start school in august and don't have much time

[sparq]

Why SOHC ZC?

[BLU CIVIC]

Originally posted by sparq
Why SOHC ZC?

KNOW A GUY THAT I MET WHO'S SOHC ZC WAS RUNNING MID 14'S SO I THINK I'LL STAY WITH THE SOHC ENGINES....

DO YOU THINK THE DOHC ZC IS BETTER?

[BLU CIVIC]

i looked and i found that the dohc is better....but what all do i need to go all motor then a turbo......there's so much stuff and i have no idea as to where to start....i think what i'm looking for is a list

[edman24]

i got you man i love this subject. well let me start by saying that most of the engine work must be done at the same time. it would be a complete waste of money to get new pistons in then have to open your rngine again to put new rods in. so here is what youll need to do. im assuming youll want to go all out and run high boost so im goin to name a lot of things to strengthen the engine that wont necessarily be mandatory at low boost.

first for your block. you will need new forged pistons and rods. the pistons will need to be less than 9.0:1 compression to run that high boost. i suggest 8.5:1. JE make the best in my eyes. then youll need new rods i would go with eagle or crower. the crank could be left alone but if you have the money i would suggest shot peening the crank and knife edging it for max acceleration. the nice thing about turbocharging is that your head can remain stock without problems. if i were you id leave it stock because upgraded cams make overlap and that would cause your turbo to blow unused air and fuel out the exhaust. also for block sleeves. i dont know what you want to run as far as boost goes but sleeves are for people with an insane amount of money or boost. your block should be fine up to about 15psi. then i would look into sleeves.

then you need to start upgrading your fuel and ignition. i would go with a completely new ignition like the MSD 6A with a blaster coil and 9mm plug wires. then comes the fuel. youll definitely need a new fuel pump again which depends on how much boost youre running along with new injectors . how much boost are you goin to run!!??? you will need a better or reprogrammed ECU to handle all this and the best is a stand alone unit but it is expensive liek the HALTECH and is hard to tune. for you i would suggest a piggyback system. do your own research on that and decide what you like, there are many out there.

of course with all this in your engine now you are ready for a turbo. but you will need a few things now that you cant add on before you have the turbo in. this includes the turbo manifold, id go custom but you could use a REV HARD manifold which work fine. then of course the turbo which again depends on the boost you want to run. then a downpipe which will almpst always have to be custom made and a brand new exhaust. wait till youre installing the turbo to put a new exhaust in because you have to make sure the exhaust you get matches the downpipe. then of course the oil lines to the turbo. from the turbo youll need about 2.5 to 3 inch piping to an intercooler (hint: use a mitsubishi starion intercooler unless you dont care about spending 1500 bucks on a new one) from there youll need a blow off valve and an external wastegate. id go with blitz for those. they are the best. then a pipe from the intercooler to the throttle body. with the turbo installed youll need a turbo timer and boost controller with a good boost guage, water temp guage and oil temp.

after all this is in youll need to get it tuned which any competent turbo shop can do. i think i covered everything but if i think of anything else ill let you know. let me know of any more questions and ill be happy to answer.

[sparq]

Well I mean it all depends on your needs... the SOHC ZC although newer, is basically the D16z6 that we get here in the states (found in 92-95 civic si and the del sol as well)

The DOHC ZC although no VTEC, is well... DOHC, unless you are running big boost I dont think the SOHC would be of benefit. I dont know how far you plan on going with the turbo build up, but trust me... do it BEFORE you put it in the car. Its a pain in the ass yanking motors in and out every time you have to do something. Just take care of it all non, and drop it in complete. Not only will you save time, it will make life easier because you wont have to crawl under your car and put your body in any un-natural positions to bolt stuff up! And do the obvious as well... new pumps, seals, gaskets etc. Dont trust anything that comes "used" :smoker2:

[BLU CIVIC]

THANX A LOT..I THINK THE DOHC ZC WILL BE A BETTER BUY AND THEY ARE MORE COMMON THAN THE SOHC...MMMM NOW ALL I NEED IS MONEY

[BLU CIVIC]

AS FAR AS PIGGYBACKING.....WHAT DO YOU THINK OF THE HONDATA OR ZDYNE??

I THINK THAT I'M GOING TO TRY AND RUN AT THE MOST 15 PSI FOR A WHILE.....

I WENT TO WWW.HOMEMADETURO.COM AND WHAT DO YOU THINK OF THEIR ZC SET UP?? THINK IT'S BETTER TO GO HOMEMADE RATHER THAN BUY THE WHOLE SET FROM LIKE GREDDY AND IT DOESN'T MAKE A DIFFERENCE B/C THEY'RE BOTH KINDA THE SAME??

[sparq]

15 PSI? Hope you plan on dumping boat loads of money into building the internals because they wont take it... pistons, rods, block resleaved etc.

[edman24]

yah sparq thats exactly what my REALLY long post was about. the fact that he needs to build his bottom end for anything over 8 psi. and yes the hondata and zdyne are good so just do some research and look at the features. and yes a home made turbo setup is better and cheaper than a turbo kit ready made.

[BLU CIVIC]

I PLAN ON BUILDING UP THE BOTTOM FIRST B/C THIS ENGINE WILL PROBABLY BE MY LAST BIG PURCHASE FOR MY CAR (ITZ GONNA BE A SLEEPA ) AND I WANT TO DO IT RIGHT THE FIRST TIME.....WHAT'S "GETTING THE BLOCK RESLEAVED"?

[edman24]

its not necessarily resleeved. basically what they do is overbore your cylinders a certain amount. then they put "sleeves" in each cylinder made of a very hard and durable metal that can hold boost better than your block. that way you can run higher boost easier without blowing the block. if i was goin to be running 15psi on a street car i would definitely go with sleeves. just a good safety feature to have.

[mellowboy]

Edman pretty much said it all on the turbo part. Just remember u dont have to go low compression for turbo. U can have high compression turbo if ya like but not too high. I would go higher than 11:1. It actually produce more power to the wheels then lower compression set up. Just remember it MUST be tuned correctly and u can't run high boost on that set up. You'll be just as fast or faster. If i was gonna go FI i would go high compression but thats just me. I'm more into all motor than FI anyways.

[edman24]

yah personally i like the challenge of all motor more. but for this guy mellow i would suggest running low compression for one reason. hes not a pro tuner or mechanic. running even 9.5:1 compression with anything above 10psi makes a very volatile engine. detonation all over the place if you dont do it right. that doesnt mean that you cant have a turbo on a car running 12:1 compression but it wont last long and you will definitely not know how to tune it. go with 8 or 8.5:1. much much safer.

[BLU CIVIC]

ONE LAST QUESTION...WHICH ECU WILL I NEED AND IF I'M PIGGYBACKING IT....WOULD I NEED A CHIP UPGRADE FOR IT??