I am thinking on Putting my d16z6 can and rockers assy on my d15z1 engine. Can this be Done?

 

Cam yes, rockers no. The z1 operates in 12 valve mode until it engages e-vtec above 2900rpms when all 16 valves open. You would not see any benefit of swapping the camshaft for that reason

Relating the y5 to the z1:
The y5 camshaft is more aggressive than a y8 camashaft, my guess is you would see no performance gain from swapping out the z1 camshaft

 

Another note, the e-vtec motors (d15Z1) utilize roller rockers, where the Z6 does not. This may cause issues.

 

I fully realize that the d15z1 is an E-vtec . rubs on 12 valves until 2500 rpm. I am Trying to see if I can Convert it to a Z6 cam And rocker assembly and Change the Engagement of VTEC to 4500 rpm with my ecu P28-a02 With hondata s300v3. Pretty much making a hybrid D15z6

 

If you have a Z1 engine in good condition you could probably trade it even for a Z6 or Y8. There is an eco-modding community interested in keeping them VTEC-E.

 

Do whatever you want, the z1 cylinder head is designed to function in 12 valve. The intake manifold is different than a z6, the head chambers allow for swirling of the air into the head, the valve overlap to incorporate the egr system is built into the head. So can you do it? Sure, it will run like **** and make less hose power.

Go for it.

 

not a good idea either. compression ratio is under 8:1 with that setup. OP- d15 vtec engines exist, why bother?

 

both donor engines are 1995 obd1 no egr's on either Engine.. And this is what I Already own. D16z6 parts engine and a Good d15z1. I can Put the Z6 intake and Injectors on the Z1 if I need to. As for Port swirl. I'll race port the Cylinder for high flow.

 

ALL z1's have an egr system. this thread is derp, period the derpin end. the cam/rocker assembly swap is stupid and shouldnt be done, which is why nobody does it. just about every conceivable d series combo has been tried, dyno'd, and written up. you're not being a pioneer, you're being stupid. the z1 is what it is... if you're going to throw head work, etc into the mix just fix and swap in your z6

 

first and for most the d15z1 engine is a 'obd1 94 JDM d15b with vtec-e in the valve cover. There is No EGR system designed into said Engine. 1 stage VTEC valve ..

 

Saying it's a JDM D15B doesn't clarify anything. There is at least 5 variants of the JDM D15B.

There is the non vtec, the vtec-E the regular vtec and then the 3 stage vtec/vtec-E and then there is the carb D15B with mechanical fuel pump bolted into the head.

Saying it's a D15Z1 is misleading as the JDM D15B is NOT identical to the USDM counterpart, there tends to be subtle differences and will net you incorrect information.

 

huge difference, if he has the single stage vtec d15b. not even remotely close to the z1, other than the fact that someone slapped a z1 valve cover onto it.

 

Yeah, my point was more on OP getting offended by the responses when the information provided is going to net bad information regardless. Accurate information has to be provided to expect accurate information in return. Just like in any system, Garbage In = Garbage Out.

 

indeed, sir. so the new answer is yes, but there is zero to be gained from doing so.

 

First and foremost stop trying to be a smart ***. You've stated 3 times it is a d15z1, so did we help you figure this out or what because you're still not making any sense

Second you've ruined any further chances of getting any sort of knowledgeable answers to your questions on this forum. Have fun searching clubcivic forums

 

I'll add that I'd like to see this done. I have more to say but not until the OP can confirm exactly what engine variant he really has and state what the intentions of this particular mash up is going to be.

 

Head Code is as follows: p07-1
Rockers are Roller in type. Pulled head off but Found Crack in Exhaust seat area on #2 cylinder. IE Turns out to be Non Repairable . project is Now Shelved Because of Z1:p07-1 Head is Bad. Wow. Talk about bad luck....
Thank You to All the replies to My Questions..

 

I'm sorry to hear your project is shelved.

I just wanted to confirm my original statement that the Z6 is flat tappet style rocker while the Z1 is the only roller rocker of the 92-95 era.

Viewing the FSM confirms the two separate designs and does bring for questions of fitment and actual feasibility.




Reading up on roller rockers, the reason they are used is for high aggressive cam profiles. That being said, indicates the Z1 cam has high enough aggression on the cam profile to require roller rockers.

Putting a flat tappet rocker assembly onto that cam (if it fit) would induce the problems that caused roller rockers to be designed in the first place.

It's these problems as to why no one has bothered to put a Z6 rocker assembly onto a Z1 head if it even fits.

In addition, putting the Z6 cam in to marry up to the Z6 rockers changes the whole workings of the engine and induces even more problems unless you are going for the ECU change too to become a vtec motor instead of the vtec-e.

 

Z1 cam is bigger than z6 cam

https://honda-tech.com/forums/honda-...-d16y5-870725/