sup guys i just purchased a a6 head and i was wondering wat do i need to put the head on to the d15. i know i need the a6 head gasket, a6 timing belt, will the d15 dizzy work with it.im just doin this for daily driven car. will the setup be bad.

 

D16A6 heads and D15B7 heads are the same cast, and pretty much the same internally except for the cam. You can pretty much use all D15 parts...DEFINITELY use the D15 t-belt

 

What D15B are you talking about?

Would it perhaps be the 8 valve CX version with 70hp?

What is the full engine block code on your engine?

 

its the d15b8 cx one. im pretty sure its the same as the d15b7 but just 8 valve. thanks for the tip bauley

 

Well if it's an 8-valve head then you would want any other 16 valve head. If you can get an A6 head, then go for it. The head casting for an 8 valve head and a 16 va;ve head are certainly very different.

What year is your CX? I ask because I'm pretty sure the 1992 versions had pistons with only 8 valve reliefs. Later the CX engines were given pistons with 16 valve reliefs for cost reasons, but I don't know which year that was.

Mista Bone here know what year - IM him and see what he says.

I'd say get the A6 (or any other 16 valve head) and try to get either a 1992-1995 Si/EX intake manifold or best the 1996-2000 D16Y8 EX intake manifold. Also get the metal 1992-1995 Si/EX head gasket. It raises CR slightly and is stronger than fiber ones.

Also pick up a throttle body from any 1992-1995 Si/EX as well. All of your CX intake stuff should be ditched since it is tiny and restrictive. The only thing to keep would be the stock airbox if you don't have an aftermarket intake. The stock tuning needs to go though.

After the head I'd get a nice cam too. Here's a lot of different cam specs for the D16A6 - I got these from fastcrxsi90:

Stock
Advertise Duration: Int=222 / Exh=224
Duration @ .050: Int=194 / Exh=196
Lobe Separation: 110
Gross lift: 333/362

Now the aftermarket ones:

Crane Cams
251-0010
Advertise Duration: Int=226 / Exh=228
Duration @ .050: Int=200 / Exh=202
Lobe Separation: 107
Gross lift: 384/376

251-0012
Advertise Duration: Int=232 / Exh=234
Duration @ .050: Int=206 / Exh=208
Lobe Separation: 108
Gross lift: 394/386

251-0014
Advertise Duration: Int=232 / Exh=228
Duration @ .050: Int=206 / Exh=202
Lobe Separation: 110
Gross lift: 394/376

251-0016
Advertise Duration: Int=242 / Exh=244
Duration @ .050: Int=216 / Exh=218
Lobe Separation: 110
Gross lift: 425/416

Web Cams
148e/273
Advertise Duration: Int=226 / Exh=230
Duration @ .050: Int=206 / Exh=208
Lobe Separation: NA
Gross lift: 376/370

115/273
Advertise Duration: Int=240 / Exh=230
Duration @ .050: Int=218 / Exh=208
Lobe Separation: NA
Gross lift: 376/370

202/168
Advertise Duration: Int=282 / Exh=286
Duration @ .050: Int=258 / Exh=262
Lobe Separation: NA
Gross lift: 406/410

Exospeed
Street A6

SR909 A6
Advertise Duration: Int=268 / Exh=256
Duration @ .050: Int=NA / Exh=NA
Lobe Separation: NA
Gross lift: 398/388

Race A6 not 100% sure
Advertise Duration: Int=268 / Exh=268
Duration @ .050: Int=NA / Exh=NA
Lobe Separation: NA
Gross lift: 398/398

Stage 4 not 100% sure
Advertise Duration: Int=282 / Exh=282
Duration @ .050: Int=NA / Exh=NA
Lobe Separation: NA
Gross lift: 410/410

Stage 5 billet core...not a regrind
Advertise Duration: Int=NA / Exh=NA
Duration @ .050: Int=NA / Exh=NA
Lobe Separation: NA
Gross lift: NA/NA

Delta Cams
260 Profile
Advertise Duration: Int=260 / Exh=260
Duration @ .050: Int=NA / Exh=NA
Lobe Separation: NA
Gross lift: 400/400

272 Profile
Advertise Duration: Int=272 / Exh=272
Duration @ .050: Int=NA / Exh=NA
Lobe Separation: NA
Gross lift: 425/425

the 'tech guy' said that the 260 was designed to be just a stock replacement without having too many aftermarket bolt-ons, where the 272 works better with modifications.

also the 260 out-accelerates the 272 till ~3500rpm where the 272 out-performs.

Gude/Bullfrog
2624
Advertise Duration: Int=241 / Exh=228
Duration @ .050: Int=NA / Exh=NA
Lobe Separation: NA
Gross lift: 415/421

26824
Advertise Duration: Int=228 / Exh=225
Duration @ .050: Int=NA / Exh=NA
Lobe Separation: NA
Gross lift: 425/383

274245 Team Cam
Advertise Duration: Int=242 / Exh=237
Duration @ .050: Int=NA / Exh=NA
Lobe Separation: NA
Gross lift: 428/428

262F2416 Gorilla JR.
Advertise Duration: Int=242 / Exh=258
Duration @ .050: Int=NA / Exh=NA
Lobe Separation: NA
Gross lift: 428/421

270241 Gorilla
Advertise Duration: Int=283 / Exh=268
Duration @ .050: Int=NA / Exh=NA
Lobe Separation: NA
Gross lift: 428/421

JG
301X

EF-1

15 cam
Advertise Duration: Int=265 / Exh=265
Duration @ .050: Int=NA / Exh=NA
Lobe Separation: NA
Gross lift: 402/402 (10.2mm)

I also have a built 11:1 CR D16A6 in my 1990 hatch and I'm probably going with the Delta Cam grind because it's only $65.00!!! 260 and 272 are really big though, so valvesprings might be necessary because I don't know if I can trust 12 year old valvesprings to close the valves with that much lift.

 

thanks alot b18c5-eh2. great info for me to use. i got the newer year of cx model. i remember it was the 93 cx and newer, hope im right. thanks for everything guys.