SOHC vtec or DOHC ZC

i just wanted to know what you think would be a better way to go. i'm asking about these because first im on a budget, i dont want a car to race so i don't want a b16 or b18. so do you think my 90 hatchback would perform better with the sohc vtec motor from the 92-95 SI or a DOHC ZC motor.

I'd go with the SOHC VTEC. Ease of locating parts if anything goes wrong..

They'd probably be about the same for quickness.

def. get a sohc vtec, siz is right there is more of a selection of parts for that motor and if you ever did want to race all you would have to do is throw on a turbo. :)

I would go with the JDM D15B it will cost around the same price as the 92-95 z6 and have more horse power with way more torque.

JDM D15B VTEC is a good choice, however it has *less* torque than the d16z6, simply due to its smaller displacement. The D15B can be had for a very cheap price, sometimes $550 shipped to your front door.

i dont like the d15b vtec, cuz one of my friends has that in his car and it is really weak. i was getting the d16 single cam vtec motor. i just have one ??? about it though. i hear you dont need different motor mouts for the ZC, will i need a motor mount kit for the d16 VTEC. i also have a question about ta whole different topic i hope u can answer for me. my friend has a gsr motor in his 96 civic. the motor is OBD2, what is the difference in OBD1 and OBD2.

JDM D15B VTEC is a good choice, however it has *less* torque than the d16z6, simply due to its smaller displacement. The D15B can be had for a very cheap price, sometimes $550 shipped to your front door.

Read this page. The 3rd paragraph says that JDM D15B has more torque than the the 190ps Jdm H22A in the 96 style Accord Sir. Here is the link (http://asia.vtec.net/article/d15b/)

Read this page. The 3rd paragraph says that JDM D15B has more torque than the the 190ps Jdm H22A in the 96 style Accord Sir. Here is the link (http://asia.vtec.net/article/d15b/)

Also frequently overlooked is the fact that with 130ps from 1.5l, the specific output of the VTEC D15B is 87ps/l which actually compares favourably with the larger capacity DOHC VTEC designs such as the BB1 Prelude's H22A. The specific output of the VTEC D15B is in fact higher than the 190ps version of the H22A used on the previous generation Accord SiR !

That's what you're talking about, right? I've read that paragraph over and over again, and it still makes no sense to me.

The most torque the D15B is going to have is going to be somewhere around 90lbft... less than that at the wheels.
Once I finish putting mine in, I'll take it to have it dyno'd to make sure.

Also frequently overlooked is the fact that with 130ps from 1.5l, the specific output of the VTEC D15B is 87ps/l which actually compares favourably with the larger capacity DOHC VTEC designs such as the BB1 Prelude's H22A. The specific output of the VTEC D15B is in fact higher than the 190ps version of the H22A used on the previous generation Accord SiR !

That's what you're talking about, right? I've read that paragraph over and over again, and it still makes no sense to me.

The most torque the D15B is going to have is going to be somewhere around 90lbft... less than that at the wheels.
Once I finish putting mine in, I'll take it to have it dyno'd to make sure.

Yeah thats what I was talking about. I'm sure if you could find a conversion chart to convert to SAE you could plug in the numbers but I can't find anything. I don't even know what ps/l means. How far are you into the install. I'm still waiting for the ECU to get here then i'm gunna start. Did you check out my motor and see how the valve covers are different, and if so any ideas why?

Okay so I read further down on the site I posted and and found the torque in kgm's. Being at 14.1 kgm for torque equals out to about 102ft pounds of torque rounding to the nearest number. Using a conversion chart for power. with 14.1 Kilogram-force meter/hour coverted to Foot pound-force/hour, equals
14.1 kilogram-force meter/hour = 101.9854989 foot pound-force/hour
The site I used was http://www.onlineconversion.com/power.htm

How far are you into the install. I'm still waiting for the ECU to get here then i'm gunna start. Did you check out my motor and see how the valve covers are different, and if so any ideas why?

Haven't touched too much... still trying to decide what I should as for when buying a new timing belt, alt. belt, and water pump (I'm thinking I'll need parts from a Civic VX).
Plus I work full time and go to college as well, so I don't have too much extra time left to work on my car every week.
I also can't seem to get the transmission oil drain plug out of my old engine.... I've tried everything but an impact wrench. As soon as I get that out though, out comes my old engine, and then starts my wiring nightmare.
As for the valve cover differences, I have no thoughts on the matter. I just think it's kind of like with some peoples SOHC VTEC engines have VTEC on the valve cover and some don't... so perhaps some where painted, and some weren't.

Haven't touched too much... still trying to decide what I should as for when buying a new timing belt, alt. belt, and water pump (I'm thinking I'll need parts from a Civic VX).
Plus I work full time and go to college as well, so I don't have too much extra time left to work on my car every week.
I also can't seem to get the transmission oil drain plug out of my old engine.... I've tried everything but an impact wrench. As soon as I get that out though, out comes my old engine, and then starts my wiring nightmare.
As for the valve cover differences, I have no thoughts on the matter. I just think it's kind of like with some peoples SOHC VTEC engines have VTEC on the valve cover and some don't... so perhaps some where painted, and some weren't.

Why do u need a new timing belt, alt belt, and water pump?. Thats probably all it is with the valve cover.

Why do u need a new timing belt, alt belt, and water pump?

Better safe than sorry. The alt. belt looks slightly worn, as does the timing belt (of course those are the only two things on my engine that look AT ALL worn). Plus all of them are so easy to get to while the engine is out of the car, may as well do it now so I don't have to later.

Better safe than sorry. The alt. belt looks slightly worn, as does the timing belt (of course those are the only two things on my engine that look AT ALL worn). Plus all of them are so easy to get to while the engine is out of the car, may as well do it now so I don't have to later.

I was thinking about doing the alternator and timing. but what motor should they come from?

That's what I'm still trying to figure out.
I think I'll go ahead and order a helms manual for 92-95 Civics.

By the way, to the person who started this thred... sorry for jacking your thred, dude.

That's what I'm still trying to figure out.
I think I'll go ahead and order a helms manual for 92-95 Civics.

By the way, to the person who started this thred... sorry for jacking your thred, dude.

Yeah i apologise as well. Its just so easy to get off topic.

when they're talking about specific output being much like the h22a, they are talking about horsepower and torque per liter of displacement. its so "impressive" because it makes roughly 128hp with a 1.5L displacement. displacement is torque. 1.6L has more torque than 1.5L becuase it is so.

I have a ZC in my hatch, and I'm working on getting my crx to run with the z6 that I just put in it. I decided to go that way with this one due to exactly what siz said. You don't have to hodge-podge your motor together, with a timing belt from one car, dist from another, etc. just get a z6

if it was me i would go DOHC, kuz one, 2 cams, and upgrade on cams would make a considerable diff i think, but ur not in it for speed, so i would do SOHC kuz like that one dude said, its easier 2 locate parts... well theirs my :2cents:

I was just faced with the same predicament and ended up ordering a ZC longblock ($725 shipped, kinda high but owell) and an SI tranny ($150 shipped). The reason I chose the ZC over the D16Z6 / Y8 is I have a DX and would have to get a distributor and intake manifold and all that fun stuff from an 88-91 SI, or go OBD1 with the proper ecu (P28 IIRC). With the ZC all I need to do is add some wires, a resistor box, and a PG7 ecu (89 Integra). People complain about no aftermarket upgrades, sure there are less then the ZC but if you look hard enough you can probly find it, and also, thats what homemade turbo setups are for :) (d16turbo.com). My engine and tranny should be arriving at the end of this week. I hope to have it running by Monday.

with the d15 have u found any civics that use the same belts, starter, and alternater. i got the same motor but the money just hasnt been right cause of shit thats been going on.

I went with the cx or vx belts, exept for the timing use z6 and for the alternator and starter I say cx or vx.