hobojoe

So for starters I am not sure what I have going but I will give you all the info I have and maybe someone will be able to help me in the right direction...

I bought a 1990 Ef sedan that has a miss... Now this is where I start to get lost.
It is the stock d15 and I believe that it's a d15b2. I have removed each plug wire one by one while it was running, to see what cylinder it's missing on and they all seem to be firing because it misses worse. So then I checked the exhaust manifold (thinking that the missing cylinder would be colder) they are all evenly hot.

Any ideas yet??

the guy I bought it from said that it has a vtech head on it but that the vtech needed wired well being new to the Honda world I have no clue what is there and what's not.
But what I do know is that it still has dual port fuel injection and not mpfi and that the distributor is for the stock head. The ears that hold the dizzy in place have been ground down and a makeshift plate has been built to hold the dizzy in place...
Here is what I think I have but again I don't know much about Hondas so I will post some pics later to see if anyone has any ideas
I think it's a d15 with a d16...whatever...z6 head with the d15 intake and dizzy... Now here is what I want to know
Should I find a z6 dizzy, ecu, and wire vtech and hope that fixes the lack of power and the miss Or Should I assume that it misses because of a valve issue, get a stock d15 head and just drive it.
Keep in mind I am not racing it's just a daily driver.

Spug

VTEC

Not sure about the rest, but I know it's not vtech

skill178

sounds like your right because you have to modify the dizzy like that to make it fit on the z6 head. THEROETICALLY it should run this way as the heads are technically the same except for the vtec. the problem your having sounds to me as if its a plug wire or plug, or maybe a rotor or cap in the dizzy.

check the code on the ECU, someone might have swapped it for a mpfi or vtec ecu when the head was changed though I don't think it would run at all if it was changed.

get a d16a6 d16z6 or d16y8 intake manifold, d16z6 dizzy, and rewire to mpfi (not hard) as well as a obd0-obd1 harness and a d16z6 or chipped vtec ecu and run the car that way. garunteed to run better and produce a significantly amount of horsepower over that you have now.

stock d15b2 in your car pushes around 92 horsepower, a stock z6 pushed 126 and being a d15 block it should bump up your compression giving you a bit more than 126 horsepower. but theres no telling if vtec will work on your motor givin the fact that you didn't swap the head yourself, if the oil jet wasent removed from the block vtec wont have enough oil psi at the solenoid to activate.

hobojoe

Thanks for the info so far.
So after a much closer look here is what I have it's a d15z1 with a p07-1 head so it is a vtec-e head.
I still have no clue what ecu is in it or why I have 1 dead cyl at idle...
So with this new info if I do keep the p07-1 head what mods will I have to do to make it right?

Oh and does anyone know how to post pics from iPhone??

Spug

You'll have to host your pics online at a site like photobucket to be able to post them.

skill178

theres a code on the dizzy and the ecu, what are they?

being the e-vtec head you probably need the p07 ecu that matchs it because it is completely different then the normal z6/y8 vtec ecu's.

im pretty sure to run this motor you will need quite a few things specific to it as its almost like a hybrid motor as far as standing out from the other d series for example it requires a 5wire 02 sensor unlike the 1wire obd0 and 4wire obd1+ being in a obd0 car I do belive there are quite a few sensors that are not on the harness (on top of the ones you have to add when converting to obd1 that are specific to this engine)

this engine actually produces only 90hp but it is a fuel efficient motor, not performance..

the original engine for your car is a d15b2 unless it is a ex in which case it was a d16a6.

the d15z1 is not original for your car and its likely the other parts don't match the engine.

D15Z1
VTEC-E
Found in: 1992–1995 Honda Civic VX
1992–1995 Honda Civic VEi (European Market) Displacement : 1,493 cc (91.1 cu in)
Bore and Stroke : 75 mm × 84.5 mm (3.0 in × 3.33 in)
Rod Length : 137 mm
Rod/Stroke : 1.62
Compression : 9.3:1
Power : 90 hp (67.1 kW, 91.3 ps) at 5,600 rpm (92 hp at 5,500 rpm; USDM)
Torque : 98 lb·ft (13.5 kg/m, 133 Nm) at 4,800 rpm (97 lb·ft at 3,000 rpm; USDM)
Valvetrain : SOHC VTEC-E (USDM- Lean Burn Federal Emissions 49 State) (3-4 valves per cylinder depending on engine speed)
VTEC Switchover : 2,500 rpm
ECU Code : P07
Fuel Control : OBD-1 MPFI


D15B2
Found in: 1988–1991 Honda Civic GL/DX/LX
1988–1991 Honda Civic Wagon Wagovan/DX
1988–1991 Honda CRX DX
1992–1995 Honda Civic LSi Hatch/Saloon (European Market)
1992–1995 Honda Civic DXi Hatch/Saloon (European Market)
1990–1995 Honda Concerto (European Market) Displacement: 1,493 cc (91.1 cu in)
Bore and Stroke: 75 mm × 84.5 mm (3.0 in × 3.33 in)
Rod Length: 134 mm
Compression: 9.2:1
Power: 92 hp (69 kW) at 6,000 rpm (US)
90 PS (66 kW) at 6,000 rpm (Europe)[9]
Torque: 88 lb·ft (12.2 kg/m, 119 Nm) at 4,700 rpm
Valvetrain: SOHC (four valves per cylinder)
Cam Gear: 38 tooth
Piston Code: PM3
Fuel Control: OBD-O DPFI and OBD-1 MPFI
Redline: 6,500 rpm, 7,200 rpm rev limiter
Head Code: PM5
ECU Code: PM5/P04

D16A6

Also known as D16Z2.
Found in: 1988–1991 Honda Civic Si, CRX Si,90-91 Civic EX (4dr,A/T), Civic Wagon RT4WD
1988–1995 Honda Civic Shuttle RT4WD (UK/Europe/Asia/AU/NZ)
1989–1996 Rover 216/416 GSi/Tourer (UK/Europe) Bore and Stroke: see D16 Series Engines
Displacement: see D16 Series Engines
Rod Length: 137 mm
Rod Ratio: 1.52~
Compression: 9.1:1
Power: 108 hp (80.5 kW, 110 ps) at 5,600 rpm Note: 1988 engines were 105 hp (78.3 kW, 107 ps)

Torque: 100 lb·ft (13.9 kg·m, 136 N·m) at 4,800 rpm
Redline: 6,500 rpm (USA)
Rev limited to: 7,200 rpm
Valvetrain: SOHC (4 valves per cylinder)
Cam Gear: 38 tooth
Fuel Control: OBD-0 MPFI
Head Code: PM3
ECU Code: PM6

hobojoe

Aaawwwwhhhhaaa!!!!!!
Even better info thanks a ton.

The ride...


Messed up dizzy...


Eng bay D15z1 with p07-1 head

hobojoe

I don't know if you guys can see pics cause I sure cant, so I will just post a link

http://m1310.photobucket.com/albumvi...a.jpg.html?o=1

skill178

if you keep this engine and get the matching components its very likely this car will get 50 or 60 mpg, some have claimed slightly over 70mpg highway with the right driving.

really need to swap to mpfi and get a new intake, search for a dpfi to mpfi diy and a obd0 to obd1 diy, those should have your car running perfect but im sure you can get it drivable without doing those conversions.

what are your intentions with the car if I may ask?

buy to re-sell or do you tend to make the car a daily driver or sporty car?

hobojoe

Well I bought it for my girlfriend and I spent $550, it had a miss when I bought it but its under 200k miles the gf drove it like a month, Then a guy down the street from my parents had a 93 civic sedan with a b18a1 that he wanted $900 for and the gf decided that she liked it more so I got th ef and she got the eg... I was going to put a b18 in the ef so I bought a b18a1 and the pr4 ecu then realized that I couldn't afford the swap. So now I think I would like to slam it to the ground and make it a clean grocery getter.
Right now we have a 2004 neon, a 2001 caravan, the ef, and the gf drives a 91 acura legend

So I guess the ef is just a toy that I wanna keep on a budget oh and if anyone in the oregon area wants to buy a b18a1 with the matched ecu I guess give me a holler.

skill178

keep the motor you have and just rack up the parts needed to make it right, (92-95 civic VX)

it will be a straight up turd, no offence, but will be a great DD with good mpg and reliability.

cant complain about a car like this plus 65mpg

hobojoe

The ecu is a pm5 and I am not seeing a dizzy number

skill178

the dizzy is a sticker, comes off a lot. that ecu is for the dpfi si id assume your dizzy is to. technaclly is should run if you can get the dizzy in time. and most likely if the bolts are holding it on then its not in time.

as you can see how this guy modded his, i ground out the side if mine and used a big washer... both work it just depends on what you have to work with.