why such a high failure rate for the differentials?
#2
No idea.
My S2 V12 has 640000kms, same diff, even the BW12 trans is untouched.
The S2 Daimler had 340000kms, same diff, new output seals, thats all.
The XJS had a Dana, no issues at 245000kms.
The S3 XJ6 "snotter", no issues either.
The XJ40 3.6, daughters car, survived her teenage driving prowess, and still going strong at 420000kms.
Clean oil, changed annually, is MY service care of ALL my Jags, maybe thats the key, dunno.
My S2 V12 has 640000kms, same diff, even the BW12 trans is untouched.
The S2 Daimler had 340000kms, same diff, new output seals, thats all.
The XJS had a Dana, no issues at 245000kms.
The S3 XJ6 "snotter", no issues either.
The XJ40 3.6, daughters car, survived her teenage driving prowess, and still going strong at 420000kms.
Clean oil, changed annually, is MY service care of ALL my Jags, maybe thats the key, dunno.
#3
#4
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I'm not aware of an unusual failure rate of the old inboard brake differentials. I'd say they're as robust and durable as any other.
That said, a lot of them are running around low on oil. Checking the level and topping off is a bit of a hassle so it doesn't get done.
Seems to me, after 20 years on various Jag forums, the later outboard brake diffs are more likely to fail. The diff on my 95 XJR failed at just 77k miles!
Cheers
DD
That said, a lot of them are running around low on oil. Checking the level and topping off is a bit of a hassle so it doesn't get done.
Seems to me, after 20 years on various Jag forums, the later outboard brake diffs are more likely to fail. The diff on my 95 XJR failed at just 77k miles!
Cheers
DD
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Grant Francis (09-27-2018)
#5
There isn't a high failure rate. MANY have pushed these diff's well past 500HP in Jaguars and project cars that use Jag rear end components like Cobra racers. As long as you keep the oil in them you're good for just about anything other than fast high HP tracks in the heat.
#6
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Grant Francis (09-27-2018)
#7
Never seen a Jag diff fail. Only diff issue that comes to mind was my dad's '84 xj-s he had when I was a kid had a diff that whined. He really couldn't be bothered though so that car whined its way past 200,000 miles before the car succumbed to something else entirely! We used to joke that the old cat was howling in protest..
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Roger Mabry
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