4g distributor adapter for obd-1 conversion

[cygnus x-1]

Has to be a dizzy from a 90-93 accord with a external coil.

Does it really have to have the external coil? Is it a problem with physical fitment or is it something electrical? I know it sounds funny that I'm asking this, since I make these plates. But I didn't come up with the original design so I don't know what the details were.


C|

[guaynabo89]

Its just wiring. They're physically the same.

[cygnus x-1]

Its just wiring. They're physically the same.

So then you could use the internal coil models with the proper wiring? (I don't see why you couldn't)

C|

[gfrg88]

Internal coil here with ZERO problems. Should just be any obd1 f22 dizzy..

[cygnus x-1]

Internal coil here with ZERO problems. Should just be any obd1 f22 dizzy..

Ok, that's what I was thinking.


So I'm curious, how many people out there are still seriously thinking about doing an OBD1 conversion? (and maybe have not done it yet because of the cost?)


C|

[gp02a0083]

Ok, that's what I was thinking.


So I'm curious, how many people out there are still seriously thinking about doing an OBD1 conversion? (and maybe have not done it yet because of the cost?)


C|

Cost is one thing , but there may be other members like me who use their 3gee as a DD. Id convert over to OBD-1 but im skeptical about finishing this in a day or two, something like a weekend project.

[gfrg88]

Biggest issue IMO is the wiring. Everyone, including me, thinks they're gonna get stuck there. If there was a complete kit that included the plug and play harness, dizzy, and plate for under 400 shipped, I think there would be more interest... also, might wanna let the pp guys know about it...

[gfrg88]

Throw in an ecu with some basemap for around 500.

[cygnus x-1]

Biggest issue IMO is the wiring. Everyone, including me, thinks they're gonna get stuck there. If there was a complete kit that included the plug and play harness, dizzy, and plate for under 400 shipped, I think there would be more interest... also, might wanna let the pp guys know about it...

I see. Is it even possible to do a *completely* plug and play harness? I'm not familiar with the ECU wiring, but I thought some of the ECU connector pins had to be moved. Also, to make the ECU adapter harness, you have to yank the ECU side connectors from a stock ECU correct? That takes some time by itself, and then there's the cost of that stock ECU.


C|

[ShyBoyCA6]

ive seen some dizzy connectors around somwhere that are plug in play

[gfrg88]

I made everything on mine plug and play. Only thing o had made by a member here was ecu jumper, which is also plug and play. I know, that price is def gonna kill whoever pieces it together.. I would pay up to around 800 for an entire kit. But then again, I know your work is top notch and well damn worth it!

Btw, I'm hoping to pick up another plate soon for DD project

[cygnus x-1]

I made everything on mine plug and play. Only thing o had made by a member here was ecu jumper, which is also plug and play. I know, that price is def gonna kill whoever pieces it together.. I would pay up to around 800 for an entire kit. But then again, I know your work is top notch and well damn worth it!

Btw, I'm hoping to pick up another plate soon for DD project

Thanks for the compliment.

How soon are you thinking? The reason I'm asking about all this is because I would like to make the conversion process easier/cheaper if possible. I think I can simplify the distributor adaption but I don't have a (stock) fuel injected Accord or Prelude so I can't really help with ECU wiring. Well, not without some major junkyard scavenging anyway.

Is Angus still making harnesses? (I'm hoping yes)


C|

[stat1K]

angus can make harnesses but i haven't spoken to him recently. he has made complete plug and play harnesses to an extent, you'd still have to pin a few wires i believe.

his piees are excellent and extremely easy to use.

[carotman]

Well, the government is planning to implement emissions testing in my province. Since my hatch is carbed (and would probably fail emissions), I might think about making an EFI conversion on this car too...

It's not for the near future but if you're making this thing cheaper, I can't be mad about this.

[gfrg88]

Probably not til around tax season.. so around February March

[cygnus x-1]

Probably not til around tax season.. so around February March

Ok. That gives me some time then.


So I guess I might as well just lay out what I'm thinking and see what people have to say. Now that I know a little more about the OBD1 conversion process I've concluded that it would likely be easier and cheaper to modify the F22 distributors to fit the A20 head instead of using the adapter plate and key. The plate and key do work very well, but are somewhat time consuming to make, and therefore expensive. I think I could make up a holding fixture for the 4g distributor and write a CNC program to cut out new mounting slots (to match the A20 head) and also cut off the extra parts of the mounting arms that aren't needed. I know it's possible since it's been done before, it's just a matter of working out the fixturing and the cuts to make. The nice thing about modifying the distributor is that it reduces the parts count and the required machining (and therefore cost). Plus it's a cleaner looking solution.

The dilemma is that I still have I think 3 sets of plates left, and if I go ahead with doing the distributor modifications now, people will almost certainly want the modified distributors instead of the plates. Right now the plates are already made, so at the moment there is zero effort required on my part (until they run out). But then demand for them is also essentially zero. I'm hoping that with the modified distributors, people may be more interested in doing OBD1 conversions. I don't know how much it would cost to do the distributor modifications, but I can pretty much guarantee it will be cheaper than the adapter plates.


What do you guys think?


C|

[obdriver6]

If you would of said this a couple of months I would of been all over it cause I was planning on going turbo but now I'm thinking of going B series instead. I know that later on I would love to build an A series and this would make it a lot easier but I know it will take me a couple years before I do that. Have you thought about selling the plates on ebay or another honda forum.

[gfrg88]

It's not a bad idea. But I like the fact that I can still replace the dizzy without having to worry about having to get another modded one. I know I have the option to aftermarket distributors as well. I can get AEM COP kit with this plate without an issue, I think..

Me personally, I would take the plate.. Just personal preference I guess...

[AccordEpicenter]

Hey do any of you guys know how much more powerful an external coil is vs the internal coils? Im running out of spark so I def need an upgrade...

[gfrg88]

I'd def invest on at least some msd upgrades if you're still stock in that department..

[AccordEpicenter]

I want to avoid an ignition box of some sort, esp an MSD box. Guys always have issues with MSD boxes on hondas esp heavily modded hondas. Im thinking i can get away with a hotter external coil but im not sure if that will get me 100% of the way. I could possibly use an external msd coil with an msd cap...

[gfrg88]

hmm. never really heard of anything like that.. then again, i've never even ran an msd box. they're pointless in my eyes, for me at least.. I think you should look into getting an HVC-2 coil. that thing's nasty!

[cygnus x-1]

It's not a bad idea. But I like the fact that I can still replace the dizzy without having to worry about having to get another modded one. I know I have the option to aftermarket distributors as well.

Yeah, that's true.

I can get AEM COP kit with this plate without an issue, I think..

Holy crap is that thing expensive (almost $800). For that much you could put together a complete Megasquirt kit with crank fired ignition running GM COPs. I could even make you mounting plate for the COPs.


I think I will look into modding the distributors. It doesn't mean the plate set will go away, but it will add another option for the more budget conscious.


C|

[AccordEpicenter]

hmm. never really heard of anything like that.. then again, i've never even ran an msd box. they're pointless in my eyes, for me at least.. I think you should look into getting an HVC-2 coil. that thing's nasty!

that coil is for a digital 7 msd ignition...

[gfrg88]

really? thought people were using that without msd box