AOD torque converter
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 167
Likes: 0
AOD torque converter
Wonder if any of you would recommend a torque converter for my application?
Unfortunately, $$$ is one of the main factors in selection...
4,200 lb truck, mild 302 (4 barrel, aluminum intake, comp 252H cam, E7, 9.5-10:1 compression).
The cam is rated for 800 - 4800. I want to retain the ability to pull/haul.
Unfortunately, $$$ is one of the main factors in selection...
4,200 lb truck, mild 302 (4 barrel, aluminum intake, comp 252H cam, E7, 9.5-10:1 compression).
The cam is rated for 800 - 4800. I want to retain the ability to pull/haul.
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 167
Likes: 0
The 9" diff has 3.70 gears, 235/75R15 tires (about 28.9" if I remember right).
The trans has been less than perfect since I dropped the motor/tranny combo in (had never seperated them to look at it), most notably trouble shifting out of first at high RPM, and occasional hesitation going into gear from park. When I pulled the motor to rebuild it, I see that the converter has ballooned out and the flexplate to flywheel bolts are imprinted in the converter.
The trans has been less than perfect since I dropped the motor/tranny combo in (had never seperated them to look at it), most notably trouble shifting out of first at high RPM, and occasional hesitation going into gear from park. When I pulled the motor to rebuild it, I see that the converter has ballooned out and the flexplate to flywheel bolts are imprinted in the converter.
Postmaster
Joined: Jun 2005
Posts: 2,656
Likes: 1
Look up on-line how to adjust the TV cable *** it is very important you do it right**** or you will cook the transmission in no time at all... you will need a gauge to measure the line pressure... the cable that goes to the throttle linkage is not a down shift cable it controls the line pressure..
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 167
Likes: 0
Currently with the shim, at idle after the choke has closed its at 30 PSI, 0 once shim removed. Any movement of the throttle will show pressure. I have experimented briefly with having 5 psi at idle to see if it improved any of the problems I mentioned. I believe this is correct, but always open to suggestions if anyone knows that better. I'm aware that too high line pressure will balloon the TC. The tranny for the most part behaves great, only problems are frigid weather (going into gear) and full throttle (shifting from 1 - 2).
I replaced the tranny in a crown vic for a gal last year. The cable's grommet had fallen out, and the cable fell loose and promptly ruined the tranny.
Guess I should rephrase the question. Does anyone have experience with any TC's in a set up similar to mine? Are there any specific brands that you would say yea or nay to, or any wise counsel on selecting? I'm considering Hughes 1800 stall:
Hughes Performance F51TOW - Hughes Performance Tow Master Series Torque Converters - Overview - SummitRacing.com
The only thing I know for sure about TC's is that I don't know enough, and would value some input from those who know more.
I replaced the tranny in a crown vic for a gal last year. The cable's grommet had fallen out, and the cable fell loose and promptly ruined the tranny.
Guess I should rephrase the question. Does anyone have experience with any TC's in a set up similar to mine? Are there any specific brands that you would say yea or nay to, or any wise counsel on selecting? I'm considering Hughes 1800 stall:
Hughes Performance F51TOW - Hughes Performance Tow Master Series Torque Converters - Overview - SummitRacing.com
The only thing I know for sure about TC's is that I don't know enough, and would value some input from those who know more.
Trending Topics
Postmaster
Joined: Jun 2005
Posts: 2,656
Likes: 1
I think you are looking in the wrong place for your answer, I'm not transmission expert but I have rebuilt my share of aod's c6's and c4's
it sounds like a lip seal, governor, or Valve body issue.. A torque converter would not effect the 1 to 2 gear shift...
check this out.. good info and advice
Ford Transmission Forum
it sounds like a lip seal, governor, or Valve body issue.. A torque converter would not effect the 1 to 2 gear shift...
check this out.. good info and advice
Ford Transmission Forum
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 167
Likes: 0
Thanks for the responses, Hemieater. I can buy that there may be something else wrong with the trans that caused this. Doesn't change the fact that the TC is ballooned and needs replaced. I looked at your link for a while. Some good information, supported my idea that the ballooned TC could cause grinding problems internal to the trans:
"it can actually cram the convertor, which in turn causes the convertor hub to push the pump drive gear into the stator support. The pump gear actually can counterbore the stator, causing excessive metal contamination and way too much internal pump clearance." In this case it was talking about different offsets on the flexplate, but similar in application.
I'm not suggesting that the TC would fix all my problems, but am sure it needs replaced. I'll look into some of those causes when I get into it. Thanks again.
Would still welcome any input on a good TC replacement.
"it can actually cram the convertor, which in turn causes the convertor hub to push the pump drive gear into the stator support. The pump gear actually can counterbore the stator, causing excessive metal contamination and way too much internal pump clearance." In this case it was talking about different offsets on the flexplate, but similar in application.
I'm not suggesting that the TC would fix all my problems, but am sure it needs replaced. I'll look into some of those causes when I get into it. Thanks again.
Would still welcome any input on a good TC replacement.
Postmaster
Joined: Jun 2005
Posts: 2,656
Likes: 1
grinding problem you say, what else are you not telling.. it's an aod and if it's grinding it's junk pull it and rebuild it.. I spent a lot of money on those aod's went to a c6 and never looked back.. I still have the FMS wide ratio gear set, and the TCI non-lockup shaft... if your interested..
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 167
Likes: 0
I think you misunderstood - potential for grinding problems is one of the reasons I want to replace the TC. There's no grinding feel or sound to the trans, last time I dropped the pan there was no metal contamination, the fluid doesn't smell burnt. It normally drives wonderfully in all 5 gears (including Reverse), so long as the pedal isn't on the floor when shifting 1-2.
But the potential for that problem has scared me out of driving it until I get a new TC that actually clears the flexplate. When I pulled the engine, the bold imprint of the flexplate to crank bolts on the TC was what flagged me that it needed replacing.
I'd love to pick up your spare parts, but my budget is shot at the moment. May get in touch with you if/when I rebuild one though.
But the potential for that problem has scared me out of driving it until I get a new TC that actually clears the flexplate. When I pulled the engine, the bold imprint of the flexplate to crank bolts on the TC was what flagged me that it needed replacing.
I'd love to pick up your spare parts, but my budget is shot at the moment. May get in touch with you if/when I rebuild one though.
Super Moderator
Joined: Apr 2004
Posts: 34,475
Likes: 2,800
Some info here, not sure it applies as I don't see what your trans is out of etc. Especially post 17:
https://www.ford-trucks.com/forums/1...s-early-2.html
https://www.ford-trucks.com/forums/1...s-early-2.html
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 167
Likes: 0
I dug this one up to share with you all a couple things.
I decided to go through the valve body in addition to replacing the torque converter, and while I was at it installed a Transgo shift kit.
The valve body seemed a little sticky before disassembly. I also found that a portion of the VB gasket was creased, as well as a small tear on one corner. Maybe this was a factor in the 1-2 shift, I dunno.
When it came time to install the converter, I realized that there was a LOT of play in the trans shaft. I don't know why, but it all originated in the pump assembly. I have a spare trans lying around, so swapped the pumps. Converter installation felt a lot smoother afterward.
As for the TC, I went ahead with the Hughes Towmaster converter from Summit. Now that it is all together...I'm amazed! The shift kit is the single best improvement I've made to the truck. All shifting seems as it should (and nice and firm too!). The Converter lockup is not extreme at all and will be right at home on the street or towing a load as I do from time to time. Would highly recommend both of these upgrades.
I decided to go through the valve body in addition to replacing the torque converter, and while I was at it installed a Transgo shift kit.
The valve body seemed a little sticky before disassembly. I also found that a portion of the VB gasket was creased, as well as a small tear on one corner. Maybe this was a factor in the 1-2 shift, I dunno.
When it came time to install the converter, I realized that there was a LOT of play in the trans shaft. I don't know why, but it all originated in the pump assembly. I have a spare trans lying around, so swapped the pumps. Converter installation felt a lot smoother afterward.
As for the TC, I went ahead with the Hughes Towmaster converter from Summit. Now that it is all together...I'm amazed! The shift kit is the single best improvement I've made to the truck. All shifting seems as it should (and nice and firm too!). The Converter lockup is not extreme at all and will be right at home on the street or towing a load as I do from time to time. Would highly recommend both of these upgrades.