D15Z1 (economy vtec) In to 88 Civic Transmission Question

[8Civic8]

So i am trying to get the best MPG for my car but i am not sure what transmission will work with my car as is and the D15Z1 (aka economy vtec). The car is Automatic as of now. My questions are.

1) If i keep it as Automatic, what transmission will mount to the D15z1 engine and still mount to the car?

2) Will there be a problem if i use an OBD1 Engine with an OBD0 Transmission? GIven that i am using an OBD1 ECU?

3) is there an Automatic OBD1 Transmissiont hat will mount on my 88civic (currently Automatic) and still bolt on to the VX engine?

HELP!!!! (its my first swap)

[SVOboy]

Use the stock transmission if you want to stay auto, but that would suck.

There will be no issue, but you will have to rig up the transmission outside of ecu control.

No.

I highly suggest going stick shift, it's cake to drive anyway and will prolly give you another 10MPG.

[8Civic8]

What do you mean by riging up the transmission outside of ECU control?

I know how to drive stick, but i am trying to save money on this swap. The car is really old (but cool) and i would like to have it more dependable than it is now as it juts hit 200k and it leaks oil everywhere. Besided the car handles good, and it feels like a go-kart.

[8Civic8]

Would i be able to have my car taken to the referee station? and pass? If i use the stock Transmission(riggin outside of ECU control) , with the VX engine and the P07 ECU for a manual vehicle?

[SVOboy]

I mean giving the lockup solenoid constant power rather than having the ecu determine the lockup.

Yes, you could pass.

However, consider that I do my auto to manual for ~100-150 bucks, my transmission was free, and that I could sell you a clutch and flywheel for a very reasonable price, :p, you'll save more money in the end.

[8Civic8]

Where do i find the lockup solenoid, is there a thread or website i could look at regarding this?

How did you pull a conversion for $150. If i could do that i would so do it. I would need a shift linkage, pedals, flywheel, trans, cable, clutch... What do you have and how much?

[SVOboy]

I have a thread on here, lemme dig it up. It'll be b10 on the obd1 plugs, I wired it to constant power. There's really no difference to it.

I'll give you a quick rundown of what I spent on things:
- Shiftlinkage 20 shipped
- Clutch Cable 15 shipped
- Pedals 20 shipped
- Flywheel Free Off Engine I picked up
- Transmission Free From a Guy on H-T
- Clutch Free From Guys at My Old Shop
- Mounts 40 bucks (didn't all come with the tranny, some did though)

I have a bead blasted (basically just cleaned up and shiny) flywheel I spent 20 on that I was going to use but then got my other one (I actually have two spare right now).

I also have the used but good condition clutch that came with the flywheel I'm using, it's OEM Honda so it's still in good shape, mehbe 20-30 bucks for that. I have a new clutch but it's promised to ufotofu right now if he wants to do his auto to manual.

I don't have anything else I don't think but I have plenty of hooks up with people on h-t selling such things.

So really, comes out to like 95 bucks for me, :p Dax got his done for around the same price, and he prolly has parts as well.

[SVOboy]

http://www.gassavers.org/showthread.php?t=657

http://www.gassavers.org/showthread.php?t=756

Two threads on the TCLUS.

[8Civic8]

Thanks for the info. I think i would rather convert it to Manual.

So youll sell me the flywheel and clutch for 95? Does that include the pressure plate?

but where do i get the rest of the stuff?
- Shiftlinkage?
- Clutch Cable ?
- Pedals ?

Oh and what transmission part number should i use, you said one off an CRX HF, whats the part number? Do you know.

[8Civic8]

Would i need anything else to make it Manual? Like misc hardware? How did you do it, did you document the process?

[8Civic8]

What year range and models (CRX, CIVIC, Del sol?) for the
- Shiftlinkage?
- Clutch Cable ?
- Pedals ?
-Flywheel (what year and model is yours?)
-Clutch (What year is yours?)
Could i use?

[SVOboy]

http://www.gassavers.org/showthread.php?t=756 is Dax's DIY

I'd sell you the clutch and flywheel for 50 + shipping, 95 would be a rip.

Misc things you need are flywheel bolts. Prolly some crap I'm forgetting, too, but check Dax's DIY.

Clutch cable from any D series EF will work. Pedals can come outof any crx/sedan/hatch, I believe, I have sedan pedals in my car.

My flywheel is *shrug* The generic 89-00 18 pound flywheel I guess. My clutch came of a CX but it's the same as the EF stuff besides the throwout bearing, but I have like 4 throwout bearings now so I'd just give you an EF throwout bearing with it.

You'd also need clutch bolts to hold the pressure plate to the flywheel.

I'm prolly forgetting some crap but it was such a large job so it's easy to do, :p, lemme think on it some more.

[8Civic8]

Will i be able to use the axles that i currently have?

[SVOboy]

Yes.

Actually, I'm not sure. I think the 88 axles are the same but matt said differently the other day and I don't think we resolved it. Mehbe he/someone else will chime in.

[Matt Timion]

now I think the axles are the same, but that the flywheel/clutch are different for 88. I was telling 8civic8 in a private message that he might be better to find a 90-91 CRX HF transmission as it's the same as the 92+. The flywheels for the 88 and 89 were slightly smaller than the 90+

As for the pedals, I might have some available soon if I end up swapping pedals on my sedan.

[SVOboy]

Matt, that's what you told me 8 months ago when I was shopping for pedals, :p

[Matt Timion]

Matt, that's what you told me 8 months ago when I was shopping for pedals, :p

And it's still true :p

[white90crxhf]

88 transmisson has a different amount of splines on the input shaft and a different clutch is required. good luck finding flywheel bolts, you'd have to go to the junk yard and find a honda with the engine still in it. make sure you have 12 point sockets sized 17mm & 10mm.

edit: the axles are the same, my si tranny is an 88.

[Matt Timion]

88 transmisson has a different amount of splines on the input shaft and a different clutch is required. good luck finding flywheel bolts, you'd have to go to the junk yard and find a honda with the engine still in it. make sure you have 12 point sockets sized 17mm & 10mm.

If he's lucky he'll get an engine that comes with the clutch and flywheel like mine did.

[SVOboy]

I got my bolts a blown engine I bought for 5 bucks, :)

[white90crxhf]

i thought he was using his stock engine? the junk yards around here never ever have the engine in the hondas, unless its a pre-88 honda. :/

[Matt Timion]

i thought he was using his stock engine? the junk yards around here never ever have the engine in the hondas, unless its a pre-88 honda. :/

Well, he's going to put a d15z1 into his 88 civic sedan, so he's going to have to buy an engine somewhere.

A lot of the hondas here are missing engines as well, but there are plenty that still have them in there...

Removing a transmission just to get the clutch bolts is one of the last things I wnat to do though. :)

[SVOboy]

Damn, my junkyard has everything with everthing, including MAPs and dizzies, :p

[8Civic8]

I am getting the engine and it comes with a flywheel it is the d15z1, i spoke to they guy and he is not sure if its from an automatic or manual. How could i tell? as far as the transmission, it sounds as though i am going to need a HF L3 tranny and a regular crx L3 transmission wont work right? I dont understand why, look at this diagram i foud that list the different transmission codes and their applications

http://hondaswap.com/reference-materials/honda-transmission-specs-29132/

Or is the HF transmission just a lot better. because i have access to a regular CRX transmission and it is the L3 just not the HF version.

So will the axles work? You said it was different in 88 than any other year, why?

Thanks guys, i think i want to go manual for sure, i just need to do all of my hw before i begin buying stuff. Or if you guys could help me find the stuff, or know where i can get it please let me know.

[SVOboy]

It's from a manual if it has a flywheel, they didn't make auto z1s in the US, I know that for a fact. The HF is just a lot better, the others won't give you as good mileage.

Check out my tranny write up: www.crxmpg.com/transmission.html

[8Civic8]

Well its a japanese engine. So it could be a automatic but i havent personally seen it.

[white90crxhf]

you axles will work. the 88 tranny has a different number of splines on the transmissions input shaft than 89-91, i have no idea about after that.

[white90crxhf]

if the engine is coming witha flywheel it's a stick.

edit:though i don't think it matters, i imagine the bolts to the crankshaft are exactly the same on an automatic for the torque converter?

[8Civic8]

Do any of you know if a shift linkage out of 92-95 civic will work with my 88? I was told that it would work on any d series engine/transmission set?

[SVOboy]

White, no, the bolts are different

8civic8, I don't think it will, different size, though I might be wrong.

[8Civic8]

Does anyone know where i can find an HF transmission?

[SVOboy]

Troll on H-T for one, put up a want ad and PM everyone swapping their HF. Also try local honda/car forums.

[SVOboy]

Look here for all the misc crap you need: http://www.honda-tech.com/zerothread?id=1604834

[8Civic8]

For some reasont the honda-tech forum you sent me wont allow me to post responses. And i have already signed up. You said before that i need the flywheel bolts. Do they look like this? Do i need both the pressure plate bolts and the flywheel bolts? Where could i find these, does honda sell them new?

[SVOboy]

You need both, junkyard/h-t, but yes, honda does have them new. Iono why that thread hates you though! :(

[8Civic8]

Would it matter if i purchased a used clutch cable? Would it be better if i got a new one? Whats a good price to pay for a used one?

[SVOboy]

Mine's used, :p, it should be fine. 20-25 shipped is the most I'd spend.

[8Civic8]

how many mounts do transmissions have?

[SVOboy]

Three of them, it's the front, rear, and passenger side engine mounts that you need.My front came on the tranny and I had to buy the side and rear. You'll need both pieces of those two and the front is only one piece.

[8Civic8]

Doesnt the engine have 3 and the tranny have 1? because the mounts i have now on my engine would work on the d15z1 right? my question is would the Automatic transmission mount i have now work on a 5 speed tranny?
Like below. Please correct me if im wrong


http://i18.ebayimg.com/05/i/06/b5/54/a4_1.JPG

[SVOboy]

Iono WTF that pictue is but it's wrong, :p I can take a picture of a transmission in my basement for you.

Anyway, none of the auto tranny mounts work, they're all slightly different. You can get the manual ones fairly cheaply though.

[8Civic8]

where should i look for the transmission mounts?

[SVOboy]

Junkyard/h-t. You can get them new from honda if you pay out the nose. Check with the person you buy the tranny from. If they went b/h/k series they'll have them for you.

[DaX]

Here's where I got everything I needed for my conversion:

*HF transmission - a friend's back yard (try Honda-Tech or a local honda board...I have ImportAtlanta.com)
*Rebuild parts for HF tranny - www.hondaautomotiveparts.com
*Pedals - Junkyard
*Flywheel - I had one, try Honda-Tech or ImportAtlanta equivalent
*Clutch - eBay (less than $100)
*Shift Linkage - Junkyard
*ECU - Honda-Tech
*Mounts - Honda-Tech
*Clutch Cable - Autozone

[8Civic8]

Would it be easier to conver to mpfi and obd2 if i had a harness from a mpfi crx? Or is it the same regardless?

[Matt Timion]

Would it be easier to conver to mpfi and obd2 if i had a harness from a mpfi crx? Or is it the same regardless?

You want obd1, not obd2.

It's best to stick with your existing harness. Not only is it cheaper, but the MPFI wiring only takes like 30 minutes if you just follow the directions and know how to do a little wiring.