I bought a ae72 wagon for my wife
And am eventually going to put a carbed 4ag
But she wants to keep it auto
Would this work ?
4ac auto tranny on 4ag?
Re: 4ac auto tranny on 4ag?
4ac crank has 6 bolts, 4age has 8, where the flex plate bolts up. So no
can't remember if the torque converter pattern is the same, but try a auto flexplate from mr2 or fx16 and compare em to the 4ac 1
can't remember if the torque converter pattern is the same, but try a auto flexplate from mr2 or fx16 and compare em to the 4ac 1
Re: 4ac auto tranny on 4ag?
Mmmmm i forgot about that
Yea ima have to look that up
Yea ima have to look that up
Re: 4ac auto tranny on 4ag?
if none of the fwd flex plates could work, and ya reeeaalllyy wanted an auto in there...... I guess you could look into having the 4ac flex plate 6 holes plug welded, machined flat then redrilled to 8.
there is a 6/8-hole spacer or shim? there as well. Can't remember if the fwd had one
there is a 6/8-hole spacer or shim? there as well. Can't remember if the fwd had one
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Re: 4ac auto tranny on 4ag?
Blasphemous I know, but you could also use a 4A-C crank inside the 4A-GE. But I think the 4A-C crank has 40mm rod journals so you would have to use an early bigport set of rods (and pistons -- 9.4:1). If you're not building the engine for crazy power (whether it's NA or turbo) I wouldn't worry about reliability. The 4A-F(E) cranks are probably the same as the 4A-C cranks, and guys turbo those 4A-FEs with no mods and get like 160 HP or more with no problems.
The later 4A-FE cranks might have 42mm rod journals. I'd have to check the '97 crank I have sitting in my garage. Then you could use later bigport, or smallport, rods on a 4A-FE crank. All 4A-F(E) cranks have six bolts so there should be no problem getting that 4A-C flex plate bolted up.
The later 4A-FE cranks might have 42mm rod journals. I'd have to check the '97 crank I have sitting in my garage. Then you could use later bigport, or smallport, rods on a 4A-FE crank. All 4A-F(E) cranks have six bolts so there should be no problem getting that 4A-C flex plate bolted up.
'88 Corolla All-Trac x2 (manual, auto)
Re: 4ac auto tranny on 4ag?
Someone told me that a 7a crank is 6 bolts
If that's the case I could just do that
If that's the case I could just do that
Re: 4ac auto tranny on 4ag?
Yes 7a crank are six bolts.
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Re: 4ac auto tranny on 4ag?
Aren't 7A cranks also stroked for 1.8l? You'd need custom rods. Better off with a 4A-FE crank.
'88 Corolla All-Trac x2 (manual, auto)
Re: 4ac auto tranny on 4ag?
Yea 7a strokes to 1.8 but using stock rods
Piston choice is what matters
So dope that should work
7ag with 4ac flex plate
Piston choice is what matters
So dope that should work
7ag with 4ac flex plate
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Re: 4ac auto tranny on 4ag?
'88 Corolla All-Trac x2 (manual, auto)
Re: 4ac auto tranny on 4ag?
Ha yea man
U don't put a 7a crank in the 4ag block
U use the whole 7a block on a 4ag head
That's what a 7ag is
U don't put a 7a crank in the 4ag block
U use the whole 7a block on a 4ag head
That's what a 7ag is
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Re: 4ac auto tranny on 4ag?
AE86's in Japan came with the 4A-GE and an automatic transmission. They used the flexplate from the AW11 MR2 and AE82 Corolla FX16 (32101-17010).
That said, I'm not sure if the AE86 SR5 torque converter will bolt right up to that flexplate or not. The AE86 A/T in Japan used a different torque converter (32000-12150) from the AE85/AE86 A/T in North America (32000-12070/71), but that could be for a number of reasons. The front oil pump and shaft is the same between the two, so using the Japanese torque converter with a North American transmission shouldn't be a problem.
It looks like there were mostly some small revisions to the transmission, but they're very similar. If you get a flexplate from an MR2/FX16 I think that should give you most of what you need to bolt an SR5 A/T setup onto the 4A-G. Worst case, you may need to drill some new holes for the torque converter to flexplate bolts.
Jeff
That said, I'm not sure if the AE86 SR5 torque converter will bolt right up to that flexplate or not. The AE86 A/T in Japan used a different torque converter (32000-12150) from the AE85/AE86 A/T in North America (32000-12070/71), but that could be for a number of reasons. The front oil pump and shaft is the same between the two, so using the Japanese torque converter with a North American transmission shouldn't be a problem.
It looks like there were mostly some small revisions to the transmission, but they're very similar. If you get a flexplate from an MR2/FX16 I think that should give you most of what you need to bolt an SR5 A/T setup onto the 4A-G. Worst case, you may need to drill some new holes for the torque converter to flexplate bolts.
Jeff