tampabitches

i found a 3 stage vtec head for sell and i wanna get it and put it on my 99 ex/y8 bottom end ive never done one and always wanted to.i jus wanted to know if i could just buy it and throw it on the bottom end and use my stock ecu i was gonna install the head to the y8 bottom end and just take the one wire vtec plug from the engine harness and splice it into the twin vtec soleniods.WILL THIS WORK OR WILL MY CAR RUN LIKE **** WHAT WILL I NEED TO MAKE THIS WORK PLEASE HELP ME THANKS DEAN

grumblemarc

iTrader: (4)

Run like crap. You need a P2J ECU.

noz79

If you use your vtec solenoid, intake manifold and plug the pin holes on the intake side of the head it'll work with your ecu

grumblemarc

iTrader: (4)

Then what would be the point?

tampabitches

how hard is it to find that ecu

noz79

Yea your right, for what he wants to do. Whats the point of doing this in the first place?

grumblemarc

iTrader: (4)

The allure of "3-stage VTEC".

noz79

SMH. My point exactly. lol

92lxsleeper

hmm i always thought you could benefit fuel mileage from 12valve mode, and have full power under 16valve vtec.

unlike an HX that goes from 12 valve with swirl, to a normal 16 valve low cam.

grumblemarc

iTrader: (4)

Can't do ANY of that without the proper ECU.

92lxsleeper

well of course you can't silly haha

grumblemarc

iTrader: (4)

Which he doesn't have. There's a guy that's been trying to get this to work for months without the proper ECU and still hasn't gotten it working properly.
http://www.ebay.com/itm/JDM-96-98-Ci...sories&vxp=mtr

Here's an auto ECU for half that. Don't know if you can convert it to manual.
http://www.ebay.com/itm/1997-Honda-C...#ht_500wt_1180

If you get it working you get the best of both worlds.

92lxsleeper

he should call steve at hmotorsonline. i'm sure he can hook him up with a P2J ecu

noz79

I know what the motor does Ive been working on Hondas since you were 9. Hes got an EX not an HX. Difference of opinion. Id find a way to get power out of it otherwise leave it alone

92lxsleeper

power and economy is better than power alone. why use a 3 stage head for power? for the money of the head, and ecu you could keep the y8 head and spend it on a cam, and springs, and intake manifold.

grumblemarc

iTrader: (4)

^^You're assuming the OP is aware of what function a 3-stage VTEC actually plays in a Honda. I've found that most people have no clue or have the totally WRONG concept floating around in their heads. Kinda along the lines of "If a single VTEC is good, then 3-stage VTEC is even better".

noz79

Intake manifold? Overkill! y8 manifolds are the best flowing SOHC manifolds. Honestly, leave the car alone. You put a cam on that head there goes your 3 stage so whats the point really. Put a cam in the motor now it needs to be tuned with what? a different ecu. P2J ECU's are OBD2. The guy never said anything about fuel economy to begin with.

I agree, to me this is like going backwards. Most people dont know what the 3 stage VTEC head does and think "if a single VTEC is good, then 3-stage VTEC is even better"