D16Y4(sohc) + D16 Twin Cam Head- Possible??

Hey Guys,

First of all i have done some research and searches so please do not flame me as i have not found an answer to my specific questions.

Firstly I am building a High power D16y4. It has had an extensive head port and polish, however upon doing research i have found out the d16y4 heads are quite restrictive, and think this could be an obstacle for the future.

To overcome this i have been seriously thinking about the y8 Head mini me conversion and heace getting that ported and polished too. And then the idea came to me about a zc D16 Dohc Head on the y4 Block? Firstly is it even possible as a strait swap such as a y8 head? If not how little / much work is involved?

Also are the y4 heads basically a lost cause no matter what work done to them? or if you give them a good port and polish as i have done? ia there much room for bigger and better potential?

If the zc head is even possible which would have bigger and better potential for a high powered turbo setup the twin cam non tec or single cam vtec.
---- takeing into account that you can utilise the twin cams on the zc, but being able to utilise the vtec on the sohc

I have also purchased Eagle H beam Forged rods and Arias 1.8 Over sized pistons (low comp), to suit my d16y4... should this be a problem for a zc or y1/y8 head?

Let me know your thoughts guys!

all heads are interchangeable. the y1 head is the best of all d's. stock. ive seen a fe HiPO DOHC's though. both are a good platform, cept y1 has more aftermarket support.

I thought the ZC was the odd D series engine, which was the only DOHC D and that its parts are not compatible or interchangeable with any other D engine... im not too sure on this... but ive read it on D-Series.org... which i found is a pretty good site with heaps of info on D series engines, im also planning on doing a mini me on my b7... so im still in the process of doing my homework.. just correct me if im wrong.

hey nerv why dont u buy a d16y1 engine and put in ur car ?

or a zc engine ??

Sexc86: The SOHC VTEC head actually do flow quite well and once they are boosted, the N/A flow characteristics/restrictions are negliable.

y4 head should suit your setup if it is being boosted but as Weq said, the y1 head is a much better design.

Good question... lol.... im still not sure... its just on those US forums they state.. that with a D15b7 mated with a z6/y8 Vtec head will bump the compression ratio up... and would produce more power then the D16y8 etc... and that it would be cheaper... but yeah im still trying to research on this stuff... ive been ringing wreckers and asking if they have the parts im after... but so far no luck... seems like the only engines wreckers keep are the DOHC VTEC's... im not after blinding speed... just wanna track my car and give it just that extra omph it needs... cause yeah im on a budget LOL

the z6 is the y1

which is in the vti hatch.i think for a budget the d16y1 is pretty good
96 kw at the fly and about 77kw atw

but yeah im biased coz i have one :D

Thanks for correcting me man.. ive been reading too much US junk.. lol... never even knew of the y1... but since its the z6.. its made things abit clear :thumbsup:

man your pushing more at the wheels then what im pushing at the engine LOL :( .... wanna sell me your engine?? cheap cheap? ;) haha

thats a stock y1

mine has a little more lol

u coming to honda nissan ?? to watch ??

i originally wanted too mate... but i got uni on Friday... :thumbdwn:
Looks like alot of Honda's have dropped out... all the best.. and have fun man!

the best place to take this up would be d-series.org
yeah, i've also heard the A8 head isnt interchangable.
as far as the mini me swap onto the B7 goes....... i've to heard it results in about 11:1 CR and makes more power than a Y8 but a guy did it here and the resulting dyno figures were a little dissapointing (read: less than stock Y4). however this may have been due to a number of factors such as ecu etc.. i'm sure it has been done with good results but a stock y1 or y8 may be the go for a swap and base for turbo.

Wow thanks guys for some unreal response!..... considering i am planning for this to be a high hp D after consideration i believe the y4 head will still be much too restrictive even takeing into the extensive port and polish. After Much Dicussion with Weq Im certain on going on the Y1 head on my y4 Block.

As my y4 block has been completely acid bathed, blueprinted and blanced as well as a block guard and more etc etc. The Y1 Head will be useing with a stage 2 cam, upgraded valve train and nitrated valve or even oversized if possible. Also getting that ported and polished and used with a skunk 2 intake mani + 70mm TB + port matched to suit.

Are the pistons interchangeable between the y1 and y4? as i have allready purchsed forgies for my y4 should they pose a problem if i change the head?

Anyway after a y4 head with an extensive port and polish? had no road use what so ever and the motor has not even been started yet