jdmAzn11

okay hey guys, so i got my girlfriend this 98 civic sedan, but I cant seem to figure out what the engine setup is on this thing!! The previous owner said the valve cover was replaced (not sure if he meant the color or the valve cover itself with a different model one) The block is for sure a d15z1 (epic fail) but I'm not so sure about the head. The cover label says it's a d16y7 and the intake manifold does belong to the d16y7's, but I'm confused about why it has what looks to me as a vtec solenoid (maybe I'm wrong, or maybe the cover is wrong) The ecu is a P2E (non vtec). I'm assuming it's a d16z6 head because, well it looks like one, also the engine only revs up to about 5000 and just holds the rpm's steady there (so it is vtec then no?)

well here are some pictures everything and much appreciated on the help you guys! I trust the people here know a whole lot and are sure a lot more about Honda's

Here's how the car looks like...


The engine bay (sorry cell phone camera)


The block


The belt cover


The soleniod?

grumblemarc

iTrader: (4)

Is this a trick question? A Z1 block with a Y7 head.

FTNW

d16y7 head .. It says it right there ????
it has a d16y7 IM so im guessing thats what it is.

someone probably cracked the block so they bought that one cause it was probably $200

Does it hold at 5k rpms while moving or parked ?
if it does it while parked its probably launc control

but i doubt that think revs over 5k its over 20 years old O_o

Gt limited(jdm approved)

d16z1 block
d16z6 head
d16y7 intake

why so much mixed parts i wonder what pistons

just change that intake manifold,ecu and loom and go burst vtec baahhh

that_boy_sammy

Yeah z6 head, y7 is a non V. Z1 block and Y7 mani.

jdmAzn11

that's the only reasonable answer that i can get too for the block. it holds at 5k rpms while moving, def. no launch control LOL
that's true, would the block have to do with it not going over 5k??

jdmAzn11

my god, all these mixed parts. was this guy on crack or something?!

jdmAzn11

but thanks you guys for the REALLY quick responses!

NACvicSi

You said the guy said the valve cover was changed which seems to be why most people are thinking it's a Z6 head. I'm betting it's a Z1 head with a Z6 valve cover.

FTNW

That would have to do with you ECU

my advice, Take this whole contramption of a motor out and put something else in.

This is probably a unsafe and un reliable swap. Who knows what else is could be wrong/

cheggie

Well, the D15Z1 block is a 92-95 VTEC-E block, the head looks like a D16Y8 or a D16Z6. There is a VTEC solenoid sitting there by the head, but it does not appear to be attached to the head. I bet there's a big glob of RTV or JB Weld sealing up the ports in the head next to where the valve is sitting. I found another post here about a fellow with a similar setup. His would not rev past 5k either. The timing belt cover looks appropriate for the original motor - a D16y7.

It's a franken-motor, looks like parts someone had sitting around.
But they didn't neglect to stick a cold air intake on it. Why is that?

$20 if there's another filter sitting in the box on top of the intake!

jdmAzn11

looks like I have to get my wallet ready for an engine swap
that's insane though, why would someone "put" on a vtec solenoid in the head? that's too unsafe. haha that is true, the filter is an aem dryflow and im going to have to take that $20 from you because there isn't another filter in the box

ozh_hawaiian

what castings are on the head? that would be the easiest way to tell exactly what kind of head it is! dont know how everyone can "assume" its this or that by just the valve cover, and timing belt cover, and intake mani (which fit many different d series motors)

jdmAzn11

im going to be a noob right now, but where do i find the casting number?! >__<"

ozh_hawaiian

look on the head, i cant remember exactly where, but I think my z6 head had castings on the intake side, kinda near the vtec solenoid.. but just going off the top of my head, maybe someone can give exact location... pretty sure a z6 head should have p08 casting marks

94EG8

Same here. Pull the valve cover to check, if it's got roller rockers its a Z1 head.

Also, it's got an Y7/Y8 oil pump and dipstick, not sure if anyone picked up on that. I would probably toss it and swap in something else

NotAJDMFanBoy

The D15Z1 block is the same as the D16z6 and similar to the D16Y7. The block, not the rest of it's guts. With the D15Z1 pistons, any other head will yield really low compression I believe.

The vtec solenois is not on the head. A D15z1 is a vtec motor. I bet it is a D16y7 head based on this.

The oil pumps can be switched between a Y7, Y8, Z6, Z1, etc.

If it runs fine, run it till it blows. I think there's a chance someone could have just used the D15Z1 block since they got it cheap and threw/spun a rod in the original motor.

NACvicSi

Wrong

grumblemarc

iTrader: (4)

Actually it isn't. Look closely. It isn't really attached.

94EG8

It's not, it is the same as an OBD1 JDM D15B Vtec and at least similar too if not the same as a D15B7/D15B8. But it's not the same a Z6 block, it's got smaller mains among other things.

numberone

iTrader: (2)

In other words, junk.

apexi_rsx

^~~~ good lookin ....that vtec solenoid definitely does not belong on there its not even hooked up. i believe that's a y7 head. it looks like all the dizzy bolts lined up and the dizzy did not have a conversion harness on it or nothing. what ever Einstein tried to rtv or jb weld a vtec solenoid on a y7 head i know did not switch the guts over in the dizzy to fit a z6 head and dizzy. if the vtec solenoid was real and it was rtv or jb welded it would be pouring out out with 100psi of oil pressure. looks as if someone tried to frame this motor for being a vtec motor and its not... amazing what people do these days

grumblemarc

iTrader: (4)

That's why I was thinking it was a Y7 head initially.

jdmAzn11

okay, so i checked up on the solenoid and it seems like it was just rtv'd on there, and i thought the dipstick was different.

the engine runs fine surprisingly though, just can't go over 5k like i said, (no i don't speed racer this thing nor does she, it is driven like a granny 99% of the time)

the head has one more bolt space for the dizzy

ill try to take more pictures of some specific parts of the engine bay

but for sure this engine, or even the car itself, won't be staying for too long, she doesn't want to go through engine swapping and so forth

phat00civic

Off topic but what kind of rims are those? Offsets? Thanks!!