Your donations help keep this valuable resource free and growing. Thank you.
|
aw4 swap |
Post Reply | Page <12 |
Author | ||||
CamJam
Moderator Group Joined: Jan/04/2014 Location: Arizona Status: Offline Points: 6479 |
Post Options
Thanks(0)
|
|||
Thanks Bob. I figured that was probably the case but wanted to be sure. Going to check out the local Pick & Pull today.
|
||||
'73 Javelin 360 (current project)
'72 Baja Bronze Javelin SST '69 Big Bad Orange AMX (2018 Teague Heritage Award) SOLD |
||||
jpnjim
AMC Addicted Joined: Nov/25/2007 Location: New England Status: Offline Points: 2752 |
Post Options
Thanks(0)
|
|||
They changed overdrive ratio's sometime in 1991.
Also, the 4x4 version got a larger output shaft (21 spline old vs 23 spline new) at the same time. I don't know if the 2wd output changed though. Some(most? all?) years used a stand alone control computer for the transmission (like SC397 said), I'm not sure if eventually they incorporated that in the main ECU or not. Farna would know.
|
||||
71 P-code 4spd Javelin/AMX
some Jeeps and some Fords |
||||
CamJam
Moderator Group Joined: Jan/04/2014 Location: Arizona Status: Offline Points: 6479 |
Post Options
Thanks(0)
|
|||
Quite a few pre '91 Cherokees at the Pick & Pull today, but none of them 2WD.
|
||||
'73 Javelin 360 (current project)
'72 Baja Bronze Javelin SST '69 Big Bad Orange AMX (2018 Teague Heritage Award) SOLD |
||||
DaemonForce
AMC Addicted Joined: Jul/05/2012 Location: Olympia, WA Status: Offline Points: 1070 |
Post Options
Thanks(0)
|
|||
For my 71 SST, I picked a RWD Toyota A340 from a 2000 Cherokee Sport and tore it down for inspection and overhaul. Took me two days to pull it loose from the donor. It was quite the chore and a bunch of things got in my way before I could order a rebuild kit and a few modules. I don't care about the ECU since I'll be using an electronic solenoid shifter similar to the Winters shifter and merge that control to work with the original warp style shifter. It will be a fully manual system, as it deserves.
|
||||
1971 Javelin SST
American 304 2v | FMX | AM20-3.31 1983 American Limited Jeep 4(.7)L S-MPFI | 1982 NWC T-5M (4.03/.76) | Dana30IFS/35-2.72 |
||||
jpnjim
AMC Addicted Joined: Nov/25/2007 Location: New England Status: Offline Points: 2752 |
Post Options
Thanks(0)
|
|||
Why refer to it as it's Toyota equivalent designation? The AW4 was put into Cherokees before Borg Warner sold their interest in Aisin Warner to Toyota and the company changed names. Toyota does have controlling interest now, but my understanding is Borg Warner had more to do with designing the AW4 in the 1980's than Aisin, or Toyota did.
|
||||
71 P-code 4spd Javelin/AMX
some Jeeps and some Fords |
||||
CamJam
Moderator Group Joined: Jan/04/2014 Location: Arizona Status: Offline Points: 6479 |
Post Options
Thanks(0)
|
|||
Hmmm, how many splines on the output shaft? I did see a really nice 2000 Cherokee today. It was so nice, I was thinking it was a real shame it got scrapped. |
||||
'73 Javelin 360 (current project)
'72 Baja Bronze Javelin SST '69 Big Bad Orange AMX (2018 Teague Heritage Award) SOLD |
||||
DaemonForce
AMC Addicted Joined: Jul/05/2012 Location: Olympia, WA Status: Offline Points: 1070 |
Post Options
Thanks(0)
|
|||
Two parts designation from the usual Chrysler catastrophe and one part mental note. The AW4 is something I find discussed with wheelers and crawlers in the form of endless gripes and moans. I think 4WD when I hear AW4 and RWD with any other title. It's another transmission with a million names. The one I specifically pulled is commonly known as the A340 or 30-43LE. It features the deep 1st and reverse gears.
You either have a good eye, brain or both. You can find evidence of Borg Warner's engineering in the simple compact construction, HD design and the tendency for the exterior to almost magnetically attract 20+ years of yuck that seems to require 2+ hours with a brush or scraper to peel away. Also, detachable bell housing. Common only to rare OLD automatics like my FMX/Cruiso anchor.
27 but that's unimportant. The important part is that it's SLIP YOLK. Just remember when you're pulling the transmission to get the end attached to the driveshaft before you bring everything up to the counter and you'll be fine. Also, make sure you get an oil pan that hasn't been punched through like every anxious yard monkey tends to do to these within a week of entry to whatever row.
Row52 is either screwing with me or the 71 Gremlin in the Sherwood yard is getting scrapped today. I really wanted to go check that out for parts. |
||||
1971 Javelin SST
American 304 2v | FMX | AM20-3.31 1983 American Limited Jeep 4(.7)L S-MPFI | 1982 NWC T-5M (4.03/.76) | Dana30IFS/35-2.72 |
||||
farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19611 |
Post Options
Thanks(0)
|
|||
You can order a trans yoke for $100 new from most Jeep parts places. I just got a new one a few months ago. Found out that a GM yoke will fit the splines (don't know which...), but it's a few thousandth smaller -- just enough that along with some vibration it won't seal well. Could just have been the vibration from mine though, internal splines were damaged and it wasn't slipping like it should. Found that the GM yoke fits when I had the shop lengthen my shaft a bit (thought that was causing the vibrations -- wasn't, but still needed to be a bit longer). Thought I had the old 88 Jeep yoke, but shop quickly identified it as a GM. I knew it was different than the new replacement!
All the AW4 trannys work the same. Around 99 or so the controller is integrated with the engine controller though, so look for the controller if a 99 or later. The little box should be under or behind the glove box. A 200x trans will work with an earlier controller. The early controllers have a performance/economy switch that makes a slight change in shift speeds. The later ones just wire it to be in performance mode all the time -- you can hardly tell the difference. |
||||
Frank Swygert
|
||||
Post Reply | Page <12 |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |