other ECM options

[guaynabo89]

yea I know ECU wise they are the same, but the external coil dizzy have one more wire then the internal and I don't know where it goes?

coil negative

[Justin86]

yea i figured it had something to do with the coil, but I couldn't find anything about it.
Like I said before the stuff with ? are pins that I couldn't figure out, if they are needed or not, or require a wire to be added to make them work............

[carotman]

Just get an external coil dizzy anyway. They are more reliable than the internal ones. Besides, you can upgrade later to a better coil without having to change to an aftermarket distributor cap

[Justin86]

yea that is what I have right now off an F22a4

[hondamanlxi]

not much help but....

the dist that comes in the 3rd/4th gen ludes(b20a5/f22) are external coil( i snagged a brand new one after an h22 swap ) i do not think the 3d gen is obd1 though

[carotman]

The 3rd gen Prelude uses a a distributor that is the same as the OBD-1 internals even if the 2.0SI engine is OBD-0. The B21A is OBD-1 and uses the same distributor. The Accord B20A also uses the same type of distributor.

[Justin86]

so then your wiring diagram carotman is for the external coils.....

[carotman]

Yes and No

The only difference is that the Igniter is inside the distributor for most cars (even with external dizzy). Just route the igniter wire to the dizzy and that's it. Same thing for the 2 coil wires.

[Civvy]

In the U.K. we dont have o2 sensors and we dont have a cat, do i need to get a manifold from u guys to convert to 0bd1?
Do i need to get a p75 from a integra ls or will a 90+ lude (b21) suffice??

[AccordEpicenter]

you could probably make the car run without a o2 sensor but the ecu will throw codes. What im trying to find out is if the obd1 accord distributor works with the P06 ecu... I might actually try this soon, i need better tuning and engine control

[Justin86]

Well I haven't tried to wire this up but making the 4g dizzy fit is a little harder then what people think. In order for it to clear everything you have to bend the water pipe in the head down and away a little bit. On the thermostat side one of the dizzy legs has to be cut off and ground all the way throught. Which then leaves a nice hole in it behind one of the sensors, which has to be sealed somehow.

[AccordEpicenter]

well i have a P06 ecu coming... so looks like im gonna try this after all. Yeah i see what you mean about the dizzy... Im wondering if we can swap obd1 internals into the obd-0 accord dizzy, have you guys tried that?

[guaynabo89]

Well I haven't tried to wire this up but making the 4g dizzy fit is a little harder then what people think. In order for it to clear everything you have to bend the water pipe in the head down and away a little bit. On the thermostat side one of the dizzy legs has to be cut off and ground all the way throught. Which then leaves a nice hole in it behind one of the sensors, which has to be sealed somehow.

Correct on the mounting situation, except you dont have to bend the water pipe if your willing to spend a couple of dollars.

I have yet to post but I have switched over to and 0bd1 ecu using the 93 Accord distributor and so far have only gotten a speed sensor cel.

What I did to make the dist fit the way I wanted is I keyed the distributors two pronged piece that lines up with the back of the camshaft, and then cut and rewelded the three tabs so that it bolts up like normal.

I had to pay someone for the welding and fitting of the distributor to the head 80 dollars though. Worth it In my opinion.

[NXRacer]

i dont think that would work because the obd0 is vacuum advance and the obd1 is electronic. you might be able to jerry rig the whole deal, which wouldnt be a good idea. i heard that the EF civic dizzy's might work. We should talk to openloop and see if they had that much of a problem. Maybe there are diff versions of the accord dizzy's.

[AccordEpicenter]

from what i know, obd-1 dizzys are obd-1 dizzys, you can use a variety of them. What are you using for an ecu guaynabo89?

[guaynabo89]

from what i know, obd-1 dizzys are obd-1 dizzys, you can use a variety of them. What are you using for an ecu guaynabo89?

95 manual ls teg

[AccordEpicenter]

so its a p74/p75 ecu?

[guaynabo89]

so its a p74/p75 ecu?

p75

runs rich

[AccordEpicenter]

are you going to chip it and uberdata tune it?

[guaynabo89]

are you going to chip it and uberdata tune it?

probably not.

Hrere are some pics of the distributor

[AccordEpicenter]

looks real nice. Chipping doesnt cost much, like $10-$20 for the parts and socket and just get a rom burner (they vary) but relativley inexpensive for the amount of tunability you get, pretty damn near standalone capabilities. Thats why im trying to upgrade, i need the better timing and fuel control, plus the ability to read 2 and 3 bar map sensors and tune accordingly (you can do this on uberdata, maybe TurboEdit too, but thats obd-0)

[Justin86]

ok I see so cut the F out of the thermo stat, then have someone relocate the dizzy mounting legs. damn wish I had an aluminum welder. how about some info on the wiring esp the ECU stuff.

[AccordEpicenter]

JB weld son... it can be done

[guaynabo89]

ok I see so cut the F out of the thermo stat, then have someone relocate the dizzy mounting legs. damn wish I had an aluminum welder. how about some info on the wiring esp the ECU stuff.

Well I have the genuine Honda manual for my car and I downloaded a acura manual of the net for the 95 teg. Thats how I figured most of the wiring. I used a obd0 to obd1 harness off ebay and then used the two manuals to doublr check the connections ath the conversion harness.

I only had to add the wires for the extra dist. sensor and icm. FOr the o2 I used wires that were already there that werent used anymore by the teg ecu like rgr lift sensor.

To give a dretailed instruction on everythiung I did will take forever but as soon as I have some time I sure will post a how to of sorts on what I did.

Im still not done wit this conversion as I'm in the process of using a b16 mani on the car so that will simplify connections plus hopefully make it run exactly how it should.

OH and yeah the thermostat housing tab that sits toward the distributor has to be ground down a bit in order t be able to get the distr. to turn. I only had to take off enough to where it almost broke through to where the bolt goes through the housing. Shouldnt see any problems with it though.

[Justin86]

yea I have the manual for the accord, but I haven't been able to get a complete pin out for any OBD-1 ECU. So you didn't have to swap any pins on the harness, from what I was seeing there was a couple that needed to be relocated.