D16 DOHC?
 

i have a D16Z2 SOHC, and i have found a cheap cilinderhead DOHC from a CRX, i know it will fit, but what do i need?

HEAD+gasket
cam posision sensor
timing belt

whats next?

Re: D16 DOHC?
 

what dohc head is it? zc, b16,

Re: D16 DOHC?
 

ALOT OF MACHINING. It can be done but not worth it! Just do the whole motor!

Re: D16 DOHC?
 

D16Z5 head just a DOHC non vtec

what will be the hp gain, mine is stock 110 the crx @ 125?

Re: D16 DOHC?
 

its a twin cam head and it raises your horsepower actually pretty good.. my buddy has a twin cam and his crx does 15.3 in a 1/4. it not that hard to install

Re: D16 DOHC?
 

You can't just slap a DOHC Head on a SOHC Block. It has been done, It require machining and so ingeneous thinking. If you have to ask this question you probably can't do it. You also got to think about little things like number of teeth on the CAM Gears, Oil/Coolant Pasages, Dowel Pins, Head bolt holes, and all those other small but VERY important things.

I could be wrong though because I've never heard of a z2 or a z5 motor, so you nust be in Europe or something, so they could be different, but I doubt it. For the 15hp, save for a turbo, a Cam, or something. It's not worth the 15hp.

Re: D16 DOHC?
 

the bolts wil match, but i doubt about the oil and water pasages.

the D16a6 = like the same as d16z2 d16z2 is also in a shuttle

im building a turbo on it and the compression wil lower when i put a dohc on it.

my english isnt thatgood, but what means dowel pins?

all i knew was that all Dseries parts where exchangable. except for the intake DOHC

Re: D16 DOHC?
 

as far as timing goes i would make sure that all gears used are the same as the ones on the dohc(including the one one the crank) . after that i dont think lowering the compression would be cool unless you intend on boosting it. i never messed with a zc, tehy are a joke from what i hear though and the a6 head should be at least equal plus provide more compression. i have never done that swap personally that is just my opinion. i know the zc pistons and rods are good for something tho ;)

Re: D16 DOHC?
 

Joke? Nope. The best D-Series Around IMO. Large Quench Area on the head loves timing in boost. Can hold up to alot of abuse.

Dowel Pins, Pins about 12mm around to locate the head and the block to each other. If the Holes on the block don't line up wil the pins in the head, your screwed! Same reason why the head has to be moddified for dowel pins in LS/Vtec Setups.

No not all d-series parts are interchangable. The DOHC D-Series is the Bastard Child. Unless your DOHC D-Series d16z5 is different the the D16a1 and the ZC.

Give it a try if you want. It probably won't be easy if it's like putting a DOHC ZC head onto a SOHC Block. If you ever finish it, Please do a write up!

Re: D16 DOHC?
 

im planning to boost, so its quite usefull for the lower compression.

i still dont know what dowel pins are?... those positioner pins?
the head came of a crx 1990 dohc, is this a ZC engine? how can i recognize a zc engine?

Re: D16 DOHC?
 

Well J-Spec had "ZC" on the block istead of D16a1 or a6 or so on. Euro's varied between D16XX Stamps and ZC.

Yes the Dowel Pins are the "Postioning Pins"

Re: D16 DOHC?
 

I just did a quick search, and apperently it's the German? Version of the ZC?

You can put that head on, but it won't bolt right up. Oil passages are different and a few other things. I hate saying this but "Search Hond-Tech". So guys have done it before, but it's not easy and sometime can get messy!

Re: D16 DOHC?
 

d16z5 is the last genaration of the dohc ZC that came in the EDM ED9 90-91 crx. there are also many more generations of the dohc zc. d16a1 (usdm integra?), d16a8, d16a9 (edm 88-89 crx). I think the d16a8 is what you refere to as the brown topp. there was also a doch zc in the 1.gen edm crx, but i don't know what it's called (zc1?). there are many small diffreces on the diffrent dohc zc's (IM, ExM, main girdle, o2 sensor, ecu++), but i doubt any of diffrent doch heads will bolt on to a sohc block..

Re: D16 DOHC?
 

No, the brown top is for the 84-87 Civic/CRX. Different bellhousing bolt pattern.


That is where you, and everyone else in Honduhland, is wrong. Fits just fine on the EW/D15A engine blocks.

Re: D16 DOHC?
 

ok.. thank you..
ew\d15a? what car is that? old civc?

Re: D16 DOHC?
 

84-87 era.

Pistons are 12 valve jobbers, head is 16v, requires a fresh build.

Re: D16 DOHC?
 

ok.. cool..

anyone ever done this?
anyone what kind of compression ratio you would get with pm7 pistons and pm7 head (from the d16z5 dohc) on the d15a block with stock d15 rods?

Re: D16 DOHC?
 

That engine won't bolt into your era car. The mounts, the bellhousing pattern, are different.

Trust me, bro, if you have a variant of the USDM D16A6, youhave the best flowing SOHC D-series head. Stock out of the box, the DOHC ZC head flows better, but if you go with o/s valves, a good valvejob, and some cams you'll knock the DOHC ZC out of the water.

Re: D16 DOHC?
 

but it is still better to have 2 camshafts, and the ability to ajust each shaft with cam gears.. but if what you say is true, then off course it ain't worth it..

Re: D16 DOHC?
 

Actually, adjusting both camshafts on a DOHC setup gives minor fluctuations in power, all things considered. Might be worthwhile if you are a NA sissyboy, but...

For a forced induction application - you are on HMT for a reason, I ASSume? - there is no reason you can't hit 400 whp on one of the popular stock D-series heads - DOHC ZC, D16A6 (aka your Z2), D16Z6, etc, with common as dirt T04E compressors, all within the sensor range of a GM 3 bar MAP sensor. Brute force induction of substantial quanitities of airmass get you there, not twiddling fancy adjustable cam gears. Your knock limit on (US) pump gas will be in the 350-380 whp range, and fiddling cam gears won't affect that worth mentioning. So - why fiddle twiddle? It makes no sense :P

Re: D16 DOHC?
 

yes, I am here for my HMT projekt. but with the dohc head on sohc block question i was thinking more in the ways of Natural Aspiration. and that is becouse i have an extra pm7 head and an extra sett of pm7 pistons in the garage..

so it would be fun to smack it on to a d15 block en test i out..

Re: D16 DOHC?
 

1.Negative. Compare the head gaskets.

2. If that's true, then it will NOT bolt up.

3. Negative. DOHC is different.
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Re: D16 DOHC?
 

anybody here know anyone who has done the d15a block-dohc zc head kombo?

here is what i'm planing so far:
d15a block and drivetrain
dohc zc head
a stock d-series rod\piston kombo that gives a nice compression ratio..
good cams
adjustable camgears
good header
MDS ignition (or something similar)
weber carbs

since the dohc ZC revs 7500+ rpm stock the d15 block should be able to rev close to 8000 safe, right?

Re: D16 DOHC?
 

looks like you need to search for a hydra swap on redpepperracing and stop bring up old posts

Re: D16 DOHC?
 

I have a dohc d16a6
i guy i know who has a shop the does performance honda ---- says he does it.
dohc head on sohc block everythig is ok
complete head and complete block with dohc t-belt

Re: D16 DOHC?
 

It's possible, but it's not a direct bolt on process. Machining IS required.
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Re: D16 DOHC?
 

I am NOT talkin about d16a6, d15b7, d15b2, d16z6, and so on.. I am talking about the eld EW\d15a block... according to Joseph Davis the dohc zc head bolts on to the ew\d15a block..

Re: D16 DOHC?
 

and i already what to search for or talk to gtpilot on rpr he was one of the first to do it

Re: D16 DOHC?
 

Well if Joseph says so..... :1
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Re: D16 DOHC?
 

Hey, Boost-less bitch, you ever notice all my images are hosted on redpepperracing.com? Isn't that were all the 1337 1G CRXers hang out?

http://www.redpepperracing.com/galle...6756-2/aaq.jpg

Nah, I wouldn't know anything about old skool Honduh, not like I owned one anytime before you lost your virginity or anything. Now go buy a ------- turbo, and quit spamming these forums with your blathering. I swear, I can't recall the last time I saw you make a single solitary tech post. :7

Re: D16 DOHC?
 

Well aren't you special. Just remember, the original topic of this thread WAS NOT about one of those old ugly ass pieces of ---- cars so you and your boyfriend are being homos posting your off-topic bullshit in this thread. I might just have to moderate this bitch. :6 Keep your off-topic bullshit off the tech posts, mkay? :-*


BTW, before you and your boyfriend came in here this was a bullshit free post with nothing but tech, so ---- off. :-*

Next......
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Re: D16 DOHC?
 

I refuse to play nice until I make your stupid quote of the week sig.

Re: D16 DOHC?
 

Your time will come. I don't discriminate against rednecks. >:D
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Re: D16 DOHC?
 

hello,

in need of a little help/advice

I HAVE A 91 CRX SI...JUST PURCHASED A D16BLOCK WITH A ZC HEAD (YES IT IS A DOHC)..EVERYTHING FIT FINE BUT THE STARTER AND THE FLYWHEEL WONT CLICK...

-ANY SUGGESTIONS???

THANKS

Re: D16 DOHC?
 

i suggest you tickle my balls

Re: D16 DOHC?
 

um :o

Re: D16 DOHC?
 

You have the wrong starter.

Re: D16 DOHC?
 

damn n00b...


another old ass thread thats just been bumped because a noob probably doesnt know how to install a starter....


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