ugadawg187

I got a jdm d16a stamped on the block. it was a short block motor so i swapped everything over from my y8. I took the valve cover off & it looks like a y7 head but it has ports for the vtec solenoid & stamped pj2-5 04. These motors are so confusing.

BigBunnyBoi

There is D16Z6 engine found in Honda City Type Z.
We have plenty of those here in the Philippines.

HamzaZ's Tuning

I have a d16a swapped in my ej6 sedan

martyr1391

The JDM D16A (SOHC) is the same as an USDM D16Z6 (SOHC). I found references that the cam in the D16A has slightly more aggressive ramp, but the same lift, hence the 2 hp difference.

jfible

I just bought a 93 honda civic hatchback. Well the kid sold me it told me it was d16z6 vtec an The valve cover just says honda n doesn't say vtec no big deal. I looked an saw the vtec solenoid so I was like ok it's the vtec ok and it's pretty quick little engine. But I went to do a tune up am my spark plug threads broke off in the head so I bought a used d16z6 head an took the valve cover off of it an seen they look different from eachother. Everything is the same except the head from the car the d16a head did not have a lost motion assembly holder. The new head off the d16z6 did have one so someone told me the d16a wasn't vtec but it had the solenoid on the head an was hooked up an the car was alot fast than my 96 coupe d16 non vtec. So I don't know if it was vtec or not I thought it was. But will the d16z6 head fit on the block from the d16a?? The head bolts are same thread size but they are different lengths. The bolts from the d16a are about 4 or 5 inches long an the z6 bolts are about 6 inches long. But same thread size. Will the z6 head fit on that block?? An why wasn't there a lost motion rail on the d16a?? Help me out please

Nave43

I have a 93 Del sol Si with D16A SOHC Vtec the swap was done by the previous owner so i Am not sure were it came from, but i do know its a bitch to find any information on. Its actually stamped D16A on the block... All i can find its its JDM, and to my understanding the same as a D16Z6 just with more torque. Please correct me if i am wrong.

jfible

jfible

Hey Nave43 I just read your post man and no one else is writing me back on here.. but I bought a 93 hatch few months back an had to change the head on it due to spark plug broke off inside. Well when I bought the car the guy told me it was a d16z6 vtec an dumb me didn't look at the block at all and look for the stamp. I test drove it am looked at everything just about under the hood but the stamp cuz I seen the vtec solenoid so I figured it was vtec. When driving the car it was pretty quick like a z6 vtec so didn't have any reason to not believe him. Well I'm not replacing the head found a used d16z6 head and dizzy an starter an when I got to tearing it apart to clean it out an rebuild the head I noticed this rail that's on top of the cam and sits above the springs an valves inside the head well the other head the d16a head that came off the car didn't have the rail thing. Which is called a lost motion assembly rail.. so got to wondering why. And people have said if it's vtec it has to have the lost motion rail so if the d16a head had a vtec solenoid an it was hooked up an seemed to be functional but didn't have the rail it was not vtec.. is there anyway because it's a jdm engine an different countries do **** different they just didn't out it on this engine or what?? And will this d16z6 head work on the d16a block even if it wasn't vtec? If you have your valve cover off see if your d16a head has this rail I'm talking about. Lost motion assembly rail. Thanks man please write back or anyone else help me figure this weird **** out lol. Thanks guys

Nave43

The best i can do for you is look for it whenever i tear it down to paint the valve cover. What does the head from the D16A look like?

Attachment 366897

If you cant see in this picture i will go out in the morning and take a close up, and check its year

Also there is a number somewhere on the head that identifies the year it was cast, that also may help I.D. its origin.

Did the Vtec work while the D16A head was on the motor?

Maybe the old head was from a non Vtec motor?

Nave43

Sorry to double post but cant ad pics via edit...

HiProfile

The LMA assembly isn't exactly what makes it vtec or not, it's the CAM and ROCKERS. If there are 5 lobes per cylinder and half a rocker between each intake rocker, it's sohc vtec.

It's possible to have the solenoid but not have vtec internals if the previous owner swapped in all d16y7 [or equivalent] components. The 96+ vtec [single stage] and non-vtec are virtually the same casting, except the vtec casting has provisions for a vtec solenoid. Below is a thread that shows the parts list to convert from vtec to non-vtec [bottom of 1st page]:

http://www.d-series.org/forums/n00b-...8-mini-me.html

Axelsevilla200

I have a 2000 civic ex coupe, had a d16y8 but it spun a bearing so i ordered a jdm d16A and it was a complete bolt on swap. used the same intake manifold and wiring everything was the exact same, but i also had that problem with it not really liking the 5500rmp range, it was probably because i was using the injectors that came with the d16A engine. i swapped the injectors out for the ones that were on my d16y8 engine and she rips now, also noticed that the vtec hits a lot harder than the vtec from a d16y8