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8/7/10 7:03am - Original Message: 'Cleaning differential case - and gasket question'
Crimson Ghost
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Vette(s):
1968 convertible

Joined: 3/3/2010
Posts: 94
Now that I have it open I would like to clean it out somehow - There are peices of both snap rings in there somewhere and I woulld like to get them out if I can.
 
Oh - any advice on getting those new snap rings on would be appreciated.....this doesn't look like it will be much fin this morning !
 
I forgot to order a new gasket from Ecklers, I called around and everyone has 10 or 12 bolt patterns but I have an 8 ?  Can I go to Pep Boys and buy one of those cut it yourself gaskets?
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8/7/10 8:42am - Reply: 'Cleaning differential case - and gasket question'
rod7515 Lifetime Member
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Red Lion, PA - USA

Vette(s):
1974 White 350 Corvette, TH400 Automatic 1972 Tangerine /Go Mango Convertible 383 Stroker, 2004r Automatic

Joined: 10/27/2006
Posts: 1172
You can do a make your own gasket and also many people will use silicone as well. Either one should work fine. 

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8/7/10 9:56am - Reply: 'Cleaning differential case - and gasket question'
lukesvette Lifetime Member
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HOWELL, NJ - USA

Vette(s):
1979, Targa Blue (72 Color), Pace Car rear spoiler, L88 hood, Dark blue factory interior, 525HP 406, HD 700R4, 370 gears,Steeroids, composite rear spring, TT IIs wrapped in T/A Radials.

Joined: 5/18/2004
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I would wait and get the right gasket. I put mine on with a little bit of gasket adhesive on the carrier and bolted the cover on. Dry as a bone. In terms of cleaning out the carrier, unless you plan to replace the bearings, I would not use any solvents or water. Residues from solvents will get into your new gear oil...

Wipe it out as good as you can and you can use a magnetic pick ip tool to feel around for any snap ring fragments.


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8/7/10 12:31pm - Reply: 'Cleaning differential case - and gasket question'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

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You can use a spray brake cleaner to clean out the diff. without a problem.
 To get the snap rings on, you'll have to put them up in place first, then slide the yoke in. Of course, you're gonna need some snap ring pliers with 90 deg ends, if you don't already have some.
You can get gasket material at most parts houses, and cut your own, if you want. I use an anaerobic(sp?) sealant the hardens in the absence of oxygen, but it doesn't work as well on aluminuminum, if your diff is not cast iron. There was no gasket on them from the factory to start with... If your's is aluminuminum, you can use silicon.


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Joel Adams
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8/7/10 2:08pm - Reply: 'Cleaning differential case - and gasket question'
dskopp
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Oak Creek, WI - USA

Vette(s):
1981 Great White Shark. Red Interior, 350/190hp. PS, PB (SS), A/C CC, T-Tops, Going to remain as Stock as possible. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vetts Car Club. 175,000 Original miles!!

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Aluminuminum ????  Is that a Texas Word Joel??
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8/7/10 6:51pm - Reply: 'Cleaning differential case - and gasket question'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

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It is iffin you have a speech impediment....

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Adams' Apple2010-08-07 15:52:40

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Joel Adams
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8/7/10 7:10pm - Reply: 'Cleaning differential case - and gasket question'
Crimson Ghost
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Vette(s):
1968 convertible

Joined: 3/3/2010
Posts: 94

Hey Ya’ll – I installed the yokes and snap rings today…was a breeze !  I was amazed at the ease.  The tough part was getting those darned seals out….holy crap, there must be a trick to it.  I used my gear puller for one side – the other I was able to use a screwdriver and pair of pliers.

 

Now the real problem turned out to be the 42 year old universals that were beyond rusted into the flange’s.  I pressed them out and they bent the flanges since they were rusted into one piece – man the pissed me off.  

 

I am going to buy new half shafts from Ecklers for $180 each – plug and play.  I can pick up refurbished for $120 with a $75 core – might go that route…just not sure yet.

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8/8/10 11:35am - Reply: 'Cleaning differential case - and gasket question'
ranger3 Lifetime Member
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North Charleston, SC - USA

Vette(s):
1975 L48 AT AC T-top

Joined: 3/20/2004
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Good Job!
 
Scott


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8/8/10 12:23pm - Reply: 'Cleaning differential case - and gasket question'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19449
Sorry to hear about the flanges....
One way to keep that from happening requires an extra set of spindle flanges(for the t-arms). Bolt the halfshaft to the extra spindle flange, and it adds a great deal of stiffness to the set-up, which makes it easier to remove the u-joints without tweeking the flange.
Yeah...I know...would've been nice to know BEFORE... Sorry....Embarrassed

Glad ya did get the yokes in, tho! Clap


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Joel Adams
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8/8/10 12:50pm - Reply: 'Cleaning differential case - and gasket question'
yostusota
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York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
Hey not to crowd your diff questions but I have one for you..when you put the output yokes on the diff are they "clocked" at the same place..ie. Where the u bolt flange is at the same place on both sides? I had mine on the lift Friday and I noticed that they are not at the same clock position . I have a vibration at high speed. I know its drive train but not sure if they are supposed to be.
Thanks
Rich

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8/8/10 1:46pm - Reply: 'Cleaning differential case - and gasket question'
Crimson Ghost
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Vette(s):
1968 convertible

Joined: 3/3/2010
Posts: 94
When I took the old ones out they were not in the differential case at the same position.  Actually they were darn near exact opposits -- so if one flange was up and down the other was side to side. My car did not have a vibration - I can't imagine that the yokes would need to be in the identicle position or exact opposits....I don't think that's your vibration.  Maybe an out of balance drive shaft?  or your bearings?
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8/8/10 3:49pm - Reply: 'Cleaning differential case - and gasket question'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19449
The side yokes do not need to be clocked, or in the same position. They will rotate at different speeds in turns, so they will naturally be in different positions all the time.
Rarely will a halfshaft create a vibration, unless it is bent, or the u-joint is damaged/worn out.
The most likely cause of driveline vibrations is the trans mount, or the front diff mount/cushion, assuming that all of the u-joints are in good condition. With the diff and trans mounted firmly, anything that causes the driveshaft to be out of position to the side, or up/down, in relation to the yoke on the diff will cause a vibration. If the trans mount is soft/broken, it will allow the driveshaft to run off to the side, and the same with the diff mount/cushion if it is broken/worn. 


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Joel Adams
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(click for Texas-sized view!)
             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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8/8/10 7:03pm - Reply: 'Cleaning differential case - and gasket question'
yostusota
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York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
I didn't think of the trans mount! I will check that next time I get it up in the air again. If it is like the rest of the rubber suspension on the car I am sure its bad.
Thanks dude!
Rich

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