D16y7DX

I finally started the project because I have finally have the extra money. I am going to rehone the block and redo all seals and gaskets along the way.

Block:
y7 block 123,000 miles before rehone
vitara pistons
tuner toy rods
OEM Honda bearings
arp rod bolts

Head:
z6 head
OEM Hondata head gasket
arp head studs

ECU:
p28 tuning?

Turbo:
T25 turbo
crappy ebay manifold for now

I am going to home port the head, port match the throttle body, and intake manifold. I am gonna go with a y8 intake manifold, and an f22 throttle body. I also plan on going with an aftermarket cam probably skunk2 but I wanna see what I run before any aftermarket parts are added. My question would be what is the best way for me to tune this motor? I have never tuned a motor before so I won't be tuning it myself. If anyone knows of any tuners in Colorado around the Denver area that would be kick ***. Any other suggestions or tips would be awesome let me know. I am shooting for like 200 ish horsepower. The motor will either be in a crx I buy in the future after the motor is completed or in my civic either way it is being built for autocross type racing.

seerex

Don't use a z6 head on the y7 block, use a z6 intakemani. T25 for a built motor . If its going into a crx you are going to need a jumper harness. How big is a f22 tb?

Edit; here are some write ups for diy head porting;
1) http://www.geocities.com/MotorCity/Shop/2341/pandp.htm
2) http://www.sa-motorsports.com/diyport.aspx
3) http://forums.vwvortex.com/zerothread?id=3643133
4) This is the best one--- http://www.tmossporting.com/tabid/3682/Default.aspx

D16y7DX

Yeah I wrote those websites down when you posted them before. I studied up on them and ported two heads already. Both on a 350 in a firebird. But yeah I am using a t25 for a reason I want a lot of low end pull. My top end will be weak but whatever. The dx tranny has a long *** gear ratio so having a ton of torque down low will give me an advantage. But yeah I am only building the motor for insurance, so I am not constantly fixing crap. I am using the y7 block cause it is what I got, and the y8 mani was an afterthought. It would probably be easier to just go with the z6. Considering the same guy I am getting the head, turbo, and manifold from has an intake mani for sale too. But why shouldn't I use a t25 on a build motor? lack of flow? lack of potential power?

J-MAN

the t25 will die out real quick. it will give you fast spool but nothing after about 5500 rpm's. i used one on my first setup on my y8, it was fun just because it was boosted but it gets boreing real fast haveing no top end. i upgraded to a 42/48 which was a little better but still wanted more top end so i got a 60/63 and was happy. plus the T3 flange is always a better choice because you can upgrade easier without haveing to reweld flanges on the manifold.




why not? i was thinking about doign the same because i have a y7 with low miles and runs good and also have a z6 but dont want to chance the bottom end how it is and dont want to rebuild it just yet. i know the compression gets bumped up a little but not that much.

D16y7DX

Well I know why I am building the motor and where I need/want the power so having the power below 5500 rpm isn't a problem. With my long gearing I can be doing 80 in 3rd under 5500 rpms. That is my point I want low end torque so going into a corner or something I can shift down and accelerate through the turn. I will have boost all through the gear til about 1000 rpm before shift point. That isn't that big of a deal. And for the deal I am getting for this manifold, turbo, and head I am not gonna pass it up.

J-MAN

yeah guess thats a good reason.

D16y7DX

I got where you are coming from bro and to be real honest I will most likely upgrade at some point maybe before the motor is done. But either way right now I am liking the t25 idea. I have been planning this for a long time and just looking for deals and buying the cheap stuff I find along the way. I am also toying with the idea of taking my y8 block out of my car and using that motor instead cause it already has arp head studs, a new head gasket and a turbo oil pan that will be used with whichever motor I build.

Magik123

my T25 puts out power till 6500... last dyno pull it looked like power was still climbing at 6500, its just they dont make alot of power lol. And yes u do want to upgrade pretty quick with this little guy.

D16y7DX

Regardless of when I will upgrade. I paid $175 for the head, manifold, and turbo...so I think I got a pretty good deal. Any reason why I should go with the z6 mani instead of the y8? I have heard the y8 mani is like the ITR manifold of the d-series motors.

J-MAN

y8 mani has larger plenum area, if you dont already have it i dont think its worth it to get one besides the z6