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Limited slip differential

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72FordGTS View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72FordGTS Quote  Post ReplyReply Direct Link To This Post Topic: Limited slip differential
    Posted: 10-January-2019 at 12:04PM
I used one bottle in my rear diff when I changed it last. 
Vince

1972 Ford GTS Sportsroof - Survivor, One Family car
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MrSmog Quote  Post ReplyReply Direct Link To This Post Posted: 10-January-2019 at 8:23AM
Originally posted by rancheromac rancheromac wrote:

how much do you add ? thanks


I always double whats suggested, cheap insurance.
Past 1974 Ranchero GT Q code

Present 1973 Q code formal roof base model Torino with ralleye equpiment package and 4spd.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rancheromac Quote  Post ReplyReply Direct Link To This Post Posted: 10-January-2019 at 6:08AM
how much do you add ? thanks
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Post Options Post Options   Thanks (1) Thanks(1)   Quote 72FordGTS Quote  Post ReplyReply Direct Link To This Post Posted: 09-January-2019 at 1:30PM
Yes, you still need the friction modifier.  It's for the clutches, keeps them from chattering.  I got mine from the Ford dealer, it wasn't expensive and it worked great.
Vince

1972 Ford GTS Sportsroof - Survivor, One Family car
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rancheromac Quote  Post ReplyReply Direct Link To This Post Posted: 09-January-2019 at 4:05AM
I did use castrol synthetic. isn't the friction modifier to reduce foaming?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 04-January-2019 at 10:47AM
yes,
you can use the trans x brand available at most local parts stores Wink
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Rockatansky Quote  Post ReplyReply Direct Link To This Post Posted: 04-January-2019 at 6:03AM
several times i've tried using limited slip type gear lube with the additive already in it, i had to add more additive there just wasn't enough in the store bought oil.

Yes clutches need friction modifier
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rancheromac Quote  Post ReplyReply Direct Link To This Post Posted: 04-January-2019 at 5:26AM
sorry if duplicated. I have this setup , clutch pacs, do I need to use friction modifier? using synthetic gear lube. any other info helpful as I have only run w/351m, know I am doing a built 460. thanks
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rancheromac Quote  Post ReplyReply Direct Link To This Post Posted: 04-January-2019 at 5:18AM
clutch packs in this rear end. that's what I put in my 9inch. 3.57   do I need to use a friction modifier in this ? I have only run with the 35m that came with car. I know am putting a 460 swap into thanks for any advice on the eaton
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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 24-December-2018 at 2:03PM
LOL "senior citizen" edition
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Big Bird Quote  Post ReplyReply Direct Link To This Post Posted: 24-December-2018 at 1:08PM
Pinks...
The above post should be read in a "Grumpy Old Man" voice.
Almost forgot: "Get off my lawn!!!"
Randy
1979 T-Bird
2005 F-150 STX 4.6, 3.55 LSD
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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 23-December-2018 at 3:30PM
Originally posted by Rockatansky Rockatansky wrote:

it was, until it wasn't

as i recall the old man with the cane got me a 2nd time at the light


"2nd time" what you didn't learn the first time? or were you guys racing for double or nothing $$$ ???
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Markb73gtorino Quote  Post ReplyReply Direct Link To This Post Posted: 23-December-2018 at 3:08PM
You guys are funny
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rockatansky Quote  Post ReplyReply Direct Link To This Post Posted: 23-December-2018 at 2:51PM
it was, until it wasn't

as i recall the old man with the cane got me a 2nd time at the light


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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 23-December-2018 at 11:51AM
Originally posted by Big Bird Big Bird wrote:

Originally posted by Rockatansky Rockatansky wrote:

2.75:1 gears Censored Censored Censored

been there done that

in one day i got passed by the street sweeper, ice cream truck, a little girl on a tricycle and a man with a cane

That's it???
You must live in a small town.
A VERY small town.
LOL
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Big Bird Quote  Post ReplyReply Direct Link To This Post Posted: 23-December-2018 at 11:11AM
Originally posted by Rockatansky Rockatansky wrote:

2.75:1 gears Censored Censored Censored

been there done that

in one day i got passed by the street sweeper, ice cream truck, a little girl on a tricycle and a man with a cane

That's it???
You must live in a small town.
A VERY small town.
The above post should be read in a "Grumpy Old Man" voice.
Almost forgot: "Get off my lawn!!!"
Randy
1979 T-Bird
2005 F-150 STX 4.6, 3.55 LSD
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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 22-December-2018 at 8:06AM
LOL
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rockatansky Quote  Post ReplyReply Direct Link To This Post Posted: 22-December-2018 at 3:46AM
2.75:1 gears Censored Censored Censored

been there done that

in one day i got passed by the street sweeper, ice cream truck, a little girl on a tricycle and a man with a cane

72 GT Ute
   
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Markb73gtorino Quote  Post ReplyReply Direct Link To This Post Posted: 22-December-2018 at 1:48AM
I am leaning that way so I can learn to crawl before I walk or run. For me I see it like I am in school, you guys and the internet are the teachers and my Torino is the class/homework.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 21-December-2018 at 4:36PM
that's what i did on my torino... i had 2.75's that were good, so i had my differential guy set them up on the new LSD with new bearings and seals, and new bearings on the original axles ( then i swapped housings to the lincoln mark 5 with rear discs using the lincoln axles and bearings  and housing then just placed my 3rd member section into it after the swap)
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Markb73gtorino Quote  Post ReplyReply Direct Link To This Post Posted: 21-December-2018 at 2:14PM
Thanks again, also if I leave the ratio at 2.75, where it is now, and install a LSD, then the job would be easier. Food for thought I guess
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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 21-December-2018 at 12:06PM
Originally posted by Rons73 Rons73 wrote:

Maaayyybeee....Wink
I believe there is threaded rod, scrap metal, and a BFH too.
Big smile
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rons73 Quote  Post ReplyReply Direct Link To This Post Posted: 21-December-2018 at 4:31AM
Maaayyybeee....Wink
I believe there is threaded rod, scrap metal, and a BFH too.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Markb73gtorino Quote  Post ReplyReply Direct Link To This Post Posted: 21-December-2018 at 3:09AM
Sounda like very good advice. I may just get a new 3rd member and call it good. I always need more tools so setting up my garage with what I need first may be the right call before I dig into a project like this. Thanks again
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Post Options Post Options   Thanks (0) Thanks(0)   Quote handsofstone Quote  Post ReplyReply Direct Link To This Post Posted: 21-December-2018 at 3:05AM
I bought a harbor freight press for when i do my control arm bushings and differential. Ended up just doing a reseal on the rear. If you get the press, buy the heavy plates that will let you press the new bearings on. Wear glasses and stand off to the side.
-John
72 GTS S Code

2015 Super Cab F-250
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Markb73gtorino Quote  Post ReplyReply Direct Link To This Post Posted: 20-December-2018 at 11:05PM
I am not familiar with an inch pound bearing preload. I know the Harbor freight sells relatively in expensive presses that I have seen in videos used to press bearings. The nice thing about the 3rd member replacement is off with the old, on with the new. Once I have the rearend apart and the old Diff out it looks to be a fairly simple re-install. The 9" has adjusting nuts instead of shims so that is really cool. The toughest part to me looks to be getting the 3rd member back on. I may remove the entire rearend just for easier access. Then replacing bushings and such is fairly simple in the rear arms that attach the 9" to the car. No matter what I am in over my head, but there is no other way to learn and get better. After I retire from the Army I want to build cars . Thanks for all of the support.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rockatansky Quote  Post ReplyReply Direct Link To This Post Posted: 20-December-2018 at 9:58AM
start scouting shops in the area, get word of mouth feedback, there are rock stars and rip-offs in any industry.

nothing's getting cheaper but i'd hope you could get the whole thing done including axle bearings for that much? and if you have the shop do the R&R labor that's a double bonus CYA

you're familiar with inch-lb bearing preload? i had to buy an in-lb tq wrench from an on-line bicycle shop to set up my manual steering gear sector shaft, and use duck tape to fill a socket to turn the splined shaft. IDK how i'd rig up to set the carrier side adjusters? specialized tools are a beautiful thing





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Post Options Post Options   Thanks (0) Thanks(0)   Quote Markb73gtorino Quote  Post ReplyReply Direct Link To This Post Posted: 20-December-2018 at 7:03AM
All good points, I am considering buying a press for the bearing install, but the complete 3rd member is attractive. In the long run the costs may be similar. I rebuilt a Dana 44 front diff on a 95 Bronco and it went ok. Not to intimidated but very cautious none the less. The pinion on my torino leaks as well so it looks like.more than just a new LSD . Thanks for the advice. A new 3rd member is around 900 bucks from what I have seen.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rockatansky Quote  Post ReplyReply Direct Link To This Post Posted: 20-December-2018 at 5:21AM
1st question is if Mark is comfortable setting pinion and carrier bearing preload in inch-lbs?

most Homer J. Homers are not equipped or experienced enough to attempt and successfully stick a complete 3rd member overhaul with gear change ... go for the complete assembled unit with a warranty ;)

when the time comes, 1st step get the axles out & run them over to the local transmission or full sevice parts house that presses bearings and they'll be ready to install when you need them ;) ;)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 19-December-2018 at 7:18PM
hmm, does it involve a 4 foot length of 1 1/2" pipe???
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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