ok so i did a z6 swap and running a tunned chipped pr3 obd0 ecu with this set up i just went and bought a ebay turbo kit not using the turbo though but my interior wiring is all cut up previous owner well its half gutted from previous owner also so my first question is (I know its possible) I going to rewire my entire car with obd1 wiring and use stuff out of my crashed 93 civic hatch (friend rolled it and gave me the car) now if I go that route with the p28 will this be more reliable than trying to rewire the inside of the car cause i still want it street legal.

1. so my first question is would it be better for me to rewire or fix the wiring? (I have all the time in the world)

2. with the turbo what turbo should i go with? everyday driver, looking for good power but nothing insane i would like to see 250ish
-d16z6 bored out 76mm
-eagle rods
-cp low comp 8.1 pistons
-oem rod bearings (last longer)
-3 angle valve job
-skunk 2 vavles, springs, and retainers
-walbro fuel pump
-dsm injectors (450cc)
-aem fuel rail
-stock intake mani with portmatch (wanting to get a skunk2 mani)

any insight would be nice but please dont tell me to do research lol I have... I would like advice on personal experiences and thoughts Thanks

 

If you are looking for only like 250whp, it is not really necessary to do built bottom end, head work etc. A stock z6 will handle that power without any issues. Spend your money on your tune where it counts the most although I am not sure what your budget is. If you are going to do low compression, I would get something close to 9:1 as 8:1 you may notice it being a little sluggish out of boost.

As far as what turbo to run, you can get a 57 trim turbo and it will give you plenty of room to up the boost if you choose to later on.

Personal preference on the wiring, I would get all new EF wiring, engine bay, or whatever was hacked up, and just use the jumper harnesses.

 

250 hp is no prob there especially with the motor set up you have outlined. The 57 trim is pretty big for a 1.6Z6 BUT!! will get you some big power. I know some guys that have run 50 trim turbos and get the faster spool but still get good low to midrange power. My old Z6 in my 94 coupe had a 14b DSM turbo on it and I was doing 180hp @ the wheels on 9 PSI... Your goal is not unrealistic at all.

 

Have you considered a vitara build? If it's not - you may want to check them out.
Much cheaper and work extremely well!
Sounds exactly like where you are headed - low compression pistons, machined to 76mm, aftermarket rods.

 

I have thought about that vitara build but I wanted something a lil different and budget is not a problem its time that gets it lol... I just want a reliable car if anything more than fast thats why I built it I know the stock stuff will hold up to about 300hp but didnt want to take any chances. If I decide to go with a bigger turbo I dont have to back track. Now what I know how to build engines and all but I am not sure I grasp understanding the trim part of the turbo I know how they work and all but why do they have turbo lag why dont you put a smaller turbo to get rid of that so that would be a twin turbo? right?

 

It took me like 2 to 3 months to do this build because I do it right the first time and dont cut corners I got all the time in the world to work on it but just gets frusterating after a lil while... If you understand that.

 

PICs? Need some pics

 

Stock parts won't hold 300 for long.
240 on a D-series engine in good condition is rule of thumb for as far as the rods can handle.
Vitara build is proven to work is why was suggesting it.
Good sense on using the low compression pistons so you don't have to back track.

You mean put the small turbo's output to the large turbo's input? That's a compound turbo setup. Besides having limited space under the hood, spinning a compound turbo setups need a lot of exhaust airflow that the Honda engine just doesn't have. You wouldn't really be gaining all that much anyway. Lag isn't all that bad if you get a good turbo.

 

evo 16g turbo :-) smaller turbo, will get you consistant power across the power band, not ...lag,lag,lag,lag,bwpapapapapapaa shift... but will get you good numbers.

secondly. NO don't swap the eg body harness in. if your body harness is THAT haggared then swoop up a new ef body harness and re do the dpfi-mpfi wiring. you're really only adding 3 plugs (4 wire o2 and vtak wiring) plus swapping distributor wiring plugs for the obd1 conversion harness, which is easy. oh and swapping like 4 wires at the ecu i believe. been a while since i did one

 

well my civic got put on hold for a while my girl blew a nice hole in her block so picked an h23 for free from a friend. In the mean time im going to try to attempt to fix the wiring its in the cab by the way and sorry no pics. Last month my dog slobbered all over cam (pitbull) thought it was her chew toy.

Ok thanks for the tip so smaller turbo means more powerband
bigger turbo means more power but smaller powerband...

If I understand that correctly?

 

more or less. smaller turbo = quicker spool time, broader power band. larger turbo does equal more power, but to be able to use that power the engine is going to have to be built to be able to rev higher than stock and more importantly it needs to be able to breath at high rpms to take advantage of the turbo

 

If I were you I would get some ARP rod bolts and head bolts. I would also you the small ebay turbo for nice quick spool up. If you are not comfortable running an ebay turbo you can have it rebuilt with garret parts. Also I would shoot for 225whp just to be safe. Better to be safe than have a rod through your block.