4-speed F-4EAT automatic

[nitrofarm]

I was talking specifically about the automatic. I've never seen a manual do that, just explode due to the weak differential



Not sure. Like I said, I think it has its own computer module - I'll try to verify. The ECU AFAIK only manages the engine

Ok Sounds good-

[Rocketman]

Is it only the auto trans that does this, or do the manuals have the same problem?

I was talking specifically about the automatic. I've never seen a manual do that, just explode due to the weak differential

Thats good info Rocket. So the NA Capri also came with this Tranny? I wonder does it get its Inputs from the ECM? Or seperatly from the CPS & MAPS etc?

Not sure. Like I said, I think it has its own computer module - I'll try to verify. The ECU AFAIK only manages the engine

[nitrofarm]

I believe the automatic Capri has a seperate PCM computer in-dash, I know the auto capri has its own special wire harness. It's been a long long time since I've poked around one, it had two or three connectors on top of the trans though

Okay I found some pics from many years ago, this was the auto I pulled out of my parts car. Not sure if the pics help, lol







I think it's the differentials that are so problematic on these. I've seen several which have appeared to lost the bearings on the side & eat into the case

Thats good info Rocket. So the NA Capri also came with this Tranny? I wonder does it get its Inputs from the ECM? Or seperatly from the CPS & MAPS etc?

[DriverOne]

Is it only the auto trans that does this, or do the manuals have the same problem?

[Rocketman]

Thanks Rocketman,Wikpedia doesnt tell me much.But it sounds like Mazda even made a high output unit for Toyota. I'm also wondering does it use a seperate ecm for the shifts.Or does the EGT/ Bp 1.8L ecm incorporate that-

I believe the automatic Capri has a seperate PCM computer in-dash, I know the auto capri has its own special wire harness. It's been a long long time since I've poked around one, it had two or three connectors on top of the trans though

Okay I found some pics from many years ago, this was the auto I pulled out of my parts car. Not sure if the pics help, lol







I think it's the differentials that are so problematic on these. I've seen several which have appeared to lost the bearings on the side & eat into the case

[htchbck]

I know where one of the G4A-HLs is... along with a decent looking B6. Unfortunately, no money lol or else Babystiva would become not only the first carb'd auto, but the first carb'd auto 4-speed

[Safety Guy]

From my reading of all that was posted here, my understanding is that the most practical 4 speed auto swap would be the unit from the 1989 323. It was a four speed lockup auto but had no computer controls.

I think the theory goes that you would just need to fit it into the engine bay with appropriate mounts and get it hooked up. Then compare pinouts from the ECUs, if the manual is different from the auto.

There may be more, but supposedly that's what the undocumented swap used.

Karl

[crazyrog17]

I can vouch for the trans blowing up for no reason. My '91 323 was driving calmly down the road and lost all output from the trans. Sounds like someone's grinding up pop tabs in a blender now.

[nitrofarm]

I believe the N/A capri used an F-4EAT but it is notorious for grenading for no reason
It came mated to the B6 DOHC

Thanks Rocketman,Wikpedia doesnt tell me much.But it sounds like Mazda even made a high output unit for Toyota. I'm also wondering does it use a seperate ecm for the shifts.Or does the EGT/ Bp 1.8L ecm incorporate that-

[Rocketman]

no, bellhousings won't accept a B series engine. unless it's from an EGT and then you might as well do the entire swap.

I believe the N/A capri used an F-4EAT but it is notorious for grenading for no reason
It came mated to the B6 DOHC

[nitrofarm]

no, bellhousings won't accept a B series engine. unless it's from an EGT and then you might as well do the entire swap.

Thanks thats what I was looking for.Is it a lock up converter Fest?

Only 4 speed auto swap known to have been accomplished is the G4A-HL found only in certain 1989 323's. Nothing was documented.

Thanks Hazard appreciate the response-

[bhazard]

Only 4 speed auto swap known to have been accomplished is the G4A-HL found only in certain 1989 323's. Nothing was documented.

[FestYboy]

no, bellhousings won't accept a B series engine. unless it's from an EGT and then you might as well do the entire swap.

[nitrofarm]

Has anyone put the 4-speed F-4EAT automatic in a Festy or Aspire?