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 2Likes
12-04-2012, 01:25 PM
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CC Member
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Join Date: Apr 2009
Location: Bethesda,
MD
Cobra Make, Engine: CSX 6022, navy blue, period correct 427 SO
Posts: 2,154
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The "good" axle also had twisted splines and a hairline fracture starting at the same place as the broken axle. It would have broken on the next launch. Maybe a bad batch, maybe steel was too soft. Maybe D-Cel can analyze the steel when this is over and let us know why it failed.
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12-05-2012, 08:49 AM
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CC Member
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Join Date: Feb 2010
Location: Hermosa Beach,
ca
Cobra Make, Engine: ERA#520, Roush 427SR
Posts: 203
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If the splines were twisted that indicates the metal yielded, which sounds like improper heat treatment. Are you reassembled with new parts yet ??
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12-05-2012, 01:26 PM
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CC Member
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Join Date: Apr 2009
Location: Bethesda,
MD
Cobra Make, Engine: CSX 6022, navy blue, period correct 427 SO
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Quote:
Originally Posted by csx4017
If the splines were twisted that indicates the metal yielded, which sounds like improper heat treatment. Are you reassembled with new parts yet ??
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Not reassembled yet, but new axles on order.
__________________
“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.”
www.partskeeper.com
(Less time searching, more time wrenching & driving)
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12-05-2012, 11:14 PM
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CC Member
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Join Date: Feb 2010
Location: Hermosa Beach,
ca
Cobra Make, Engine: ERA#520, Roush 427SR
Posts: 203
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Are they coming from Shelby LV ?? My 4000 is also an HST build. I just learned something. I did not know HST built 6000 cars, thought they were all SA. I have nothing bad to say about the HST build quality. My only diffy issue is that the front seal has leaked since day one and I never understood the lack of a breather. I am surprised how little lubricant has been lost when I check the level.
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12-06-2012, 03:17 AM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Breather is on top of the diff housing. You can't see it when it's installed in the car.
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12-06-2012, 10:57 AM
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CC Member
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Join Date: Apr 2009
Location: Bethesda,
MD
Cobra Make, Engine: CSX 6022, navy blue, period correct 427 SO
Posts: 2,154
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Quote:
Originally Posted by csx4017
Are they coming from Shelby LV ?? My 4000 is also an HST build. I just learned something. I did not know HST built 6000 cars, thought they were all SA.
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Mine is 6022 so an earlier 6000 car. They did close down HST a bit after my car was done, but not sure what the last number was that was built.
__________________
“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.”
www.partskeeper.com
(Less time searching, more time wrenching & driving)
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12-06-2012, 01:23 PM
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CC Member
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Join Date: Mar 2010
Cobra Make, Engine: Sold - Shelby Cobra CSX6045, 468 ci all aluminum Shelby engine
Posts: 370
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Quote:
Originally Posted by dcdoug
Mine is 6022 so an earlier 6000 car. They did close down HST a bit after my car was done, but not sure what the last number was that was built.
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6045 started its life at HST. It was one of several cars in process when Shelby pulled out of HST. The cars aren't necessarily built in numerical sequence so it's possible a higher number car was actually completed at HST.
A new 6045 was restarted and completed at Hi-Tech. It has a differential breather and filter. |
12-07-2012, 11:04 AM
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CC Member
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Join Date: Feb 2010
Location: Hermosa Beach,
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Cobra Make, Engine: ERA#520, Roush 427SR
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I can reach up over the top of the diffy housing and feel a small square drive ( pipe thread ) plug, but there is no breather installed. As an interim method I attached an adapter at the fill plug and ran a clear hose about 12 inches vertically with a temporary filter. I have looked at XJ6 illustrated parts info and they call out a breather......Nick, are the breathers you have seen coming off the small plug hole I described ????
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12-07-2012, 11:44 AM
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CC Member
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Join Date: Apr 2009
Location: Bethesda,
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Cobra Make, Engine: CSX 6022, navy blue, period correct 427 SO
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I think mine is the same as csx4017, but will look closer this weekend.
__________________
“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.”
www.partskeeper.com
(Less time searching, more time wrenching & driving)
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12-07-2012, 12:01 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Quote:
Originally Posted by dcdoug
I think mine is the same as csx4017, but will look closer this weekend.
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Meaning you ain't got one? Most vents I've seen look pretty much like what I've got on mine.
Last edited by patrickt; 11-08-2016 at 12:39 PM..
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12-07-2012, 01:17 PM
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CC Member
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Join Date: Apr 2009
Location: Bethesda,
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Cobra Make, Engine: CSX 6022, navy blue, period correct 427 SO
Posts: 2,154
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Quote:
Originally Posted by patrickt
Meaning you ain't got one?
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Yep.... 
__________________
“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.”
www.partskeeper.com
(Less time searching, more time wrenching & driving)
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12-07-2012, 01:46 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Quote:
Originally Posted by dcdoug
Yep.... |
I wonder why? It can't cost more than a buck or two and the Jag people claim that if you don't have one, and run the differential hard, oil gets pushed past the seals. Routine Differential Service |
12-07-2012, 02:01 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
You might just get this off of Ebay: Jaguar Daimler Diff Breather Elbow Tube Fits XJ XJS E Type 420 C25716 8509 | eBay
Uhhh, considering your differential is currently just sitting on the garage floor, now might be the opportune time to undertake the massive job of screwing it in to the diff case. 
EDIT: Terry's Jaguar Parts in MI has it cheaper....
Last edited by patrickt; 12-07-2012 at 02:08 PM..
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12-11-2012, 06:04 AM
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CC Member
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Join Date: Feb 2010
Location: Hermosa Beach,
ca
Cobra Make, Engine: ERA#520, Roush 427SR
Posts: 203
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I believe I have indicated on an earlier thread that I wipe down the area around and aft of the diffy front seal after every run ( almost daily ). It has leaked from day one. The temporary vent tube I installed is not preventing the seal weepage but is relieving internal pressure . The Jag part will not fit on my diffy. The loss is so minor I am never in "lack of lube" danger.........Just another thing to do when your adjusting coil-overs. I think the 3 years between roller and driver didn't help. How long was the diffy sitting on the shelf prior to install ??..........Vent it Doug !
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12-11-2012, 02:51 PM
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CC Member
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Join Date: Apr 2009
Location: Bethesda,
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Cobra Make, Engine: CSX 6022, navy blue, period correct 427 SO
Posts: 2,154
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Neutral
My diff never leaked, but I will vent it before putting it back in. Can someone tell me what all of these plugs are for and if the plug on the cover and the smaller plug on the top are both options for venting? Also, other than the main drain plug on the bottom of the diff, what's the smaller plug for?
Diff Cover
Diff top showing smaller plug
Diff bottom showing main drain plug and smaller plug
__________________
“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.”
www.partskeeper.com
(Less time searching, more time wrenching & driving)
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12-11-2012, 03:01 PM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Not Ranked
Hey Doug the plugs are for plumbing hoses and fittings for the cooler. Look for the extra wires on the left of the diff for the pump and the bracket to the right of the diff for the pump. Scoop goes in the center ahead of the crossmember with the cooler. Let me know if you want help setting that up "while you're right there". I would vent it off the back cover but don't do it in line with rotating parts and install a good baffle on the inside or it shoots slung oil up the tube.
Last edited by mickmate; 12-11-2012 at 03:04 PM..
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12-11-2012, 04:16 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
For less than a C-Note you can get a new cover that's already got the hole and vent. Now you might have to weld a baffle in there, I can't tell from the ad whether it's got one or not... probably not. Reasonably Cool Jag Finned Aluminum Rear Cover, Unpolished
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12-11-2012, 04:32 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
... or better yet, slab a little JB Weld on to a piece of aluminum and glue it on the inside as a baffle. Then, when it finally breaks loose and goes, it will make for a wonderful new thread.  |
12-12-2012, 07:19 AM
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CC Member
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Join Date: Feb 2010
Location: Hermosa Beach,
ca
Cobra Make, Engine: ERA#520, Roush 427SR
Posts: 203
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Not Ranked
Nick is right on with the diffy cooler connections. Why not vent it off the small top plug hole ? The hose I have coming off the fill plug hole shows a slight discoloration for about 2 inches and then there are no signs that the oil has been pushed any higher. It works for now. Stupid part is that I have to disconnect it to check lube level.
Nick, have you installed coolers and if so who's parts have you had success with ??? |
12-12-2012, 08:39 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
I remember this thread: Differential Oil Cooler and somehow I also remember somebody using the Maximum Motorsports diff cooler... which costs, like, over a grand, parts alone... I think Doug might be able to squeeze by with just the whistle vent....  |
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