my d15b build

[VTEC2841]

I recently acquired a clean 94 eg with a jdm d15 vtec swap w/ a 95 si tranny. the only bolt ons it has now is a AEM intake stock header with a 2.5" exhaust, a chipped ECU and a act clutch.

I'm gona blow some money on this thing and see how far I can get it all motor. It just seems like a b series swap is too much money..

so my plans are.. a skunk2 im, b16 tb sending to maxbore. I guess an ebay header but they all seem to be 4-2-1. I have a sohc vtec head in my garage that I need to identify that if it would fit this motor I'm sending out to get ported/milled. I need to find a cam for this setup too. Any suggestions on cams? I'm trying to not rev this thing past 8100 rpm unless it can handle it.. I'm planning on a stage 3 crower cam and probably 11:5 compression

so heres the rundown.

jdm d15b

ported/milled head 11:5 + compression
crower stage 3 cam
AEM intake
skunk2 im
ported b16 tb
ebay header with a 2.5 back exhaust
p28 w/ john vega tune

I know theres more I plan on doing..

how much power would this setup make? how far would I have to rev this motor out? and could the stock d15b bottom end handle this kind of top end?

I want 140whp + out of this car.. or 13's all motor.. its a CX hatch with weight reduction.

[Efd15GoKart]

I LIKE,

Im currently depating weather to build My D15 aswell, mines not vtec though.
I need to watch this and see how you do with it,
Are you planning on building the bottom end at all?

GOOD Luck with the build.

[VTEC2841]

nah.. I dont plan on doing the bottom end at all.

[shifty35]

nah.. I dont plan on doing the bottom end at all.

I'd HIGHLY recommend putting in some ARP rod bolts are a bare minimum for this setup - rod bolts are too cheap and easily replaced to overlook. Also they are prone to failure at high rpm's.

The bad news: getting that kind of compression with that block/crank will be... complicated. Using the stock pistons, you have a ~9.3:1 compression ratio. Even if you take .050" off the head, you are only at 10.5:1.

If you are willing to swap out pistons, the 98-00 GX pistons could be used with LS rods to yield 10.8:1 without milling. Shaving .025" off the head would put you at 11.6:1. I think the LS rods with GX slugs is the best bet for this bottom end.

[VTEC2841]

I just dont want to have to tear down the bottom end.. I guess I'm gona have to to get the compression I want.

I want like 150whp minimum... I think its acheivable with this setup

[dkid15]

Hold the hell up, crower doesnt make a stage three for a non vtec car bro, wtf? Am i either confised or dead on?
First strip your cx hatch, you will see that it is pretty quick and 13's are very achievabe but theres a big difference between a 13.9 and a 13.4. <--- That like taking down mustangs and evos, stock of course.

[VTEC2841]

oh I thought they did ?

[8 valve drew]

mustangs, yes. stock evos? from a roll maybe

[shifty35]

Hold the hell up, crower doesnt make a stage three for a non vtec car bro, wtf? Am i either confised or dead on?
First strip your cx hatch, you will see that it is pretty quick and 13's are very achievabe but theres a big difference between a 13.9 and a 13.4. <--- That like taking down mustangs and evos, stock of course.

Did you miss the part where he said "JDM D15B VTEC"?

[dkid15]

Did you miss the part where he said there is no vtec. I think is is just not engaged. Anyway i dont think you will make much power with that cam and vtec not engaGED. It is not designed for non vtec.

[VTEC2841]

no.. this motor is vtec.

[dkid15]

Oh my bad i misread. Rep for you

[VTEC2841]

is 170whp acheivable?

say with the rod bolts and the appropiate pistons?

12:1 + compression, a head that has ALOT of port work done, crower stage 3 cams, skunk2 im, ported b series TB, custom made header, whale penis intake w/ a k&n?

[SOHCinWA]

I dont know of any aftermarket company that makes rod bolts for the d15. And according to every company I have spoken to , they are NOT the same as the d16 rod bolt...... Although this past Friday, My stock rods and rod bolts went 7 passes with 3 hot laps and revved to 8800rpm with no issues.

[shifty35]

I dont know of any aftermarket company that makes rod bolts for the d15. And according to every company I have spoken to , they are NOT the same as the d16 rod bolt...... Although this past Friday, My stock rods and rod bolts went 7 passes with 3 hot laps and revved to 8800rpm with no issues.

I thought the JDM D15B uses Z6 rods and bolts.

[d112crzy]

Am I the only one that missed it?

He's going with a cam that will allow his head to fucking breathe, along with the intake manifold, but is buying a cheap ass, poorly designed header.

Buy a header from bisi and your numbers will definitely be close to your goals.