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View Full Version : JDM D15b vtec (head) help

trevor
05-14-2007, 01:38 PM
I have a OBD-1 JDM D15b and i think that my valve seals are shot. anyways i was looking at putting an OBD-2 Y8 head onto my car, is that a good decision? Or will my JDM head make more power.

And if so what should i do to my head or the Y8 head to make more power out of my car. Thanks

Does the P08 Ecu work better for a JDM D15b, instead of a P28
Thanks
EF2
05-14-2007, 01:42 PM
I'd rock the Y8 very good flowing head. Nothing will ever own a P28.
PimpTwzt
05-14-2007, 02:26 PM
Go with the D15B head, has a better cam than all the rest. And yes the P08 is what you want, if u cant get one, then program a P28 with the P08 bin. P28 will run a little to rich. It does make a difference I know.
marcin
05-14-2007, 03:19 PM
Go with the D15B head, has a better cam than all the rest. And yes the P08 is what you want, if u cant get one, then program a P28 with the P08 bin. P28 will run a little to rich. It does make a difference I know.

do you know what the specs are on the d15b cam vs the one that comes in the Z6?

thanks
m.
SilverStreak02
05-14-2007, 04:15 PM
If your building your motor N/A, the Y8 head wouldn't be a bad idea. It has smaller combustion chambers and will rasie the compression of your motor a little bit. I say go for it if you have the resources avalible.
PimpTwzt
05-15-2007, 08:45 PM
do you know what the specs are on the d15b cam vs the one that comes in the Z6?

thanks
m.

No I dont, but I had them sitting next to eachother and with my eye they look identical, except for the vtec lobes on the 15B were wider than the Z6. Would need a micrometer to see the real numbers.