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malibu795

malibu795

misspeelleerr
Apr 28, 2007
8,241
550
113
42
in the buckeye state
Iirc I got everything snug then added a hole on both sides and double checked backlash. then tq caps

I know the whine started about 2800 miles ago.. basically 200 miles into my Laredo TX run and I ran home empty last week.

I'm really wondering if the fact that I went soon long on the oil and I was rolling 36,000lbs through hills of Kentucky, the oil broke down enough to let metal on metal contact.. for better part of 800 miles after I changed the oil.. I was wiping metallic stuff off the dipstick.. every time I did it got less and less.
 
Chevy1925

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,685
5,840
113
Phoenix Az
It's possible but if that happened, it hurt the gears and you should see a lip on the edge of the contact areas. 2800 miles with what you pull will show quick as hell on there
 
malibu795

malibu795

misspeelleerr
Apr 28, 2007
8,241
550
113
42
in the buckeye state
There's definitely a ridge there
14523154_10209684182674910_6348892037436869010_n.jpg

14516417_10209684181834889_6336245646863424111_n.jpg
 
WVRigrat05

WVRigrat05

Wound for sound
Jan 1, 2011
3,081
4
38
36
French Creek, West Virginia
My explorer eats crush sleeves about every 75k, I replace it and it's good to go for another 75.
This time I'm going to replace it, set preload and pull it apart and have the machine shop build a steel one.
 
malibu795

malibu795

misspeelleerr
Apr 28, 2007
8,241
550
113
42
in the buckeye state
WVRigrat05 said:
My explorer eats crush sleeves about every 75k, I replace it and it's good to go for another 75.
This time I'm going to replace it, set preload and pull it apart and have the machine shop build a steel one.
Click to expand...

I'm pretty sure.mine was because I didn't maintenance the fluid like I should have...$900.00 in parts..
8qts of $20.00 synthetic 75/140 diff oil is a lot cheaper
Currently got 85/140 conventional going in
 
malibu795

malibu795

misspeelleerr
Apr 28, 2007
8,241
550
113
42
in the buckeye state
I put 85/140 Walmart brand oil in when I did the gear swap last year.. it took ~100k miles of abuse then broke down Causing excessive wear... Honestly say that's pretty darn good all things considered, no?
 
WVRigrat05

WVRigrat05

Wound for sound
Jan 1, 2011
3,081
4
38
36
French Creek, West Virginia
Chevy1925 said:
Ford limited slips are picky sob's
Click to expand...

I'm running the 80-90 in my truck. Had 40k on the royal purple I dumped and it looked new, but the gov bomb didn't work right, put junk in it, works a lot better than it did, it'll at least spin two wheels most times now.

The ford on the other hand, I have to run full sun 75-140 and a tube of trans x additive so the clutch packs don't chatter and bind up and it has to be changed a lot.
 
Chevy1925

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,685
5,840
113
Phoenix Az
malibu795 said:
I got a 8.8 in the back of my Malibu wagon.. 3.08 Detroit true Trac.. 35k on it so far. O issues yet..



Summit/jegs sell spacer/shim preload stuff for 8.8s
Click to expand...


Yup, I have a f150 8.8 going under the back of my tracker with spartan locker and 5.13 gears (stock tracker 5.13s are the whiney ones I was talking about earlier). The Detroit is a better limited slip than the ford setup.

WVRigrat05 said:
I'm running the 80-90 in my truck. Had 40k on the royal purple I dumped and it looked new, but the gov bomb didn't work right, put junk in it, works a lot better than it did, it'll at least spin two wheels most times now.



The ford on the other hand, I have to run full sun 75-140 and a tube of trans x additive so the clutch packs don't chatter and bind up and it has to be changed a lot.
Click to expand...


The G80 uses clutch packs in there as well so keeping oil from being too slick keeps it working well. The damn governor and drive gear really let them down
 
minerigger

minerigger

Active member
Dec 24, 2013
2,660
1
38
Casper, WY
All this talk of rear ends would the G80 benefit from convention vs synthetic? I run the Mobile 75-90 synthetic ls bla bla stuff but if plain Jane 75-90 will work better I'll start using that in the back. Front I'd assume whatever is fine but I'm no differential wizard
 
Chevy1925

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,685
5,840
113
Phoenix Az
cant base it off that. it would be like putting a thinner ring gear on or smaller pinion in and trying to use the same exact settings as you had before, they wont work.

when you set the gears up this time, put as much drag on the ring gear you can when you spin the pinion to get the best marking on the gears with the marking compound.
 
malibu795

malibu795

misspeelleerr
Apr 28, 2007
8,241
550
113
42
in the buckeye state
Chevy1925 said:
cant base it off that. it would be like putting a thinner ring gear on or smaller pinion in and trying to use the same exact settings as you had before, they wont work.

when you set the gears up this time, put as much drag on the ring gear you can when you spin the pinion to get the best marking on the gears with the marking compound.
Click to expand...
I'm not.. logic would say it probably didn't help the situation.

And usually that's the plan
 
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