Civic-EG.com Forum 3.3.1

- Thu Dec 25, 2008 2:04 am #85324 ok i just picked up a d16z6 from a 95 civic si and its in good running condition anmd would like to biuild a high comp daily driver. my plans are

10.5:1 cp forged pistons
stage 1 obx cam
dc tru-time cam gear
stage 2 competition clutch
4-1 headers
cold air intake
2 1/4 stright exhaust pipe
dc sports straight flow can


im also replacing the rod bearings and timing belt w/ tensioner and water pump, while running the stock p28

so i guess my question is what can i do for more compression? i heard that d16a pistons create 11.0:1 C/R and that a y8 head and mani will make more power also, is this true? thanks

- Thu Dec 25, 2008 3:19 am #85335 The y8 head will raise the compresion up some that is true. With the p29 pistons you will be around 12:1 not 11. You build plans look good except for one fatal flaw. Ditch the OBX cam and get a real cam. Exospeed.com. Check them out. To raise compression more than what you will get with the pistons you can get flat valves and even take a layer out of the head gasket.

You will want :

Skunk2 Intake Manifold
Bigger TB
Injectors
GOOD tune.

1986 Nissan 300zx
1980 Kawasaki KZ650
2014 Kawasaki Ninja 300

- Thu Dec 25, 2008 4:56 am #85362 REALLY!! DANG thats cool, ight so if i buy OEM d16a6 pistons wich are the p29 pistons and put a y8 head on it i should be around like 12.2:1??? sounds good to me cause i bet those stock p29 pistons are cheaper than the cp racing 10.5:1 c/r pistons that are $500 ill do some research let me know of anyother things that can be done

- Thu Dec 25, 2008 8:41 pm #85434 hey what do you guys think about a comp cam 105100 i can get that already installed in a complete y8 head for 200$ tell me what you think. oh and the guy says that that cam is a stage 1 and doesnt take any modification to the valve trainb for instal

- Fri Dec 26, 2008 12:28 pm #85553 Y8 Head and ZC 96+ Head are the same ?

- Fri Dec 26, 2008 6:40 pm #85590 If your looking for more compresion I would really look in too bigger sleeves instead of getting pistons that cost a lot bigger sleeves is like running a twin cam b18 b18c b16 b16b all have big sleeves for those high comp pistons ....but don't for get you can't run boost

Ferio is in my blood...so you can call me Mr. 4 door whore :-)

- Sat Dec 27, 2008 12:33 am #85627

Y8 Head and ZC 96+ Head are the same ?

Depends on what ZC motor it is.

1986 Nissan 300zx
1980 Kawasaki KZ650
2014 Kawasaki Ninja 300

- Sat Dec 27, 2008 12:34 am #85628

REALLY!! DANG thats cool, ight so if i buy OEM d16a6 pistons wich are the p29 pistons and put a y8 head on it i should be around like 12.2:1??? sounds good to me cause i bet those stock p29 pistons are cheaper than the cp racing 10.5:1 c/r pistons that are $500 ill do some research let me know of anyother things that can be done

NO, you will be alot higher than that. 12.65:1 in fact.

1986 Nissan 300zx
1980 Kawasaki KZ650
2014 Kawasaki Ninja 300

- Sat Dec 27, 2008 12:36 am #85629

If your looking for more compresion I would really look in too bigger sleeves instead of getting pistons that cost a lot bigger sleeves is like running a twin cam b18 b18c b16 b16b all have big sleeves for those high comp pistons ....but don't for get you can't run boost

Batting out of left field is this guy!! Bigger sleeves does not mean you have higher compression. Someone needs to do more research.

1986 Nissan 300zx
1980 Kawasaki KZ650
2014 Kawasaki Ninja 300

- Sun Dec 28, 2008 3:29 am #85766 ok ya i didnt think that bigger sleeves would increase compression. but as of right now im going to put a complete y8 head with stage 1 comp cam in it and p29 pistons in it has anyone ever heard of putting obd1 b16 injecters in y8 im cause someone said use bigger injectors and i couldnt think of any stock D injectors bigger than y8. and pretty much thats my build, a 12.65:1 c/r sounds freakin sick to me

- Sun Dec 28, 2008 3:38 am #85767 also when i put the y8 head on my z6 what headgasket do i use the z6 or y8? or is there a defference??

- Sun Dec 28, 2008 7:02 am #85785 There is no real difference. They are pretty much the same but get the y8.

From what I remember, the b16a injectors are still 240cc which are the same is the y8. and z6.

1986 Nissan 300zx
1980 Kawasaki KZ650
2014 Kawasaki Ninja 300

- Sun Dec 28, 2008 8:59 am #85792 ok cool ill order up the y8 head gasket and just use my z6 injectors then. thanks alot for all the help. ill let you guys know how the build ends up should be done by the end of january as i still have to do the swap get it smogged then build the motor and order the parts ect.

- Fri Jan 02, 2009 3:04 am #86511

...stage 1 obx cam...

F*ck off with the OBX.
I'll just say it once: B-I-S-I-M-O-T-O. Period.

Look at that: a serious cam

- Fri Jan 02, 2009 12:06 pm #86545

Y8 Head and ZC 96+ Head are the same ?

Depends on what ZC motor it is.

ZC Vtec 96...