Engine replacement 4.2 FHC
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Joined: Mar 2020
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From: Stouffville
Engine replacement 4.2 FHC
I’m starting to replace my 4.2 engine. Having replaced all of the oil seals. In the hope that can park the car on friends driveways.
i was replacing the cone on the front in preparation when I noticed a machined area on its back end. Its Kind of strange for it to be there with no apparently use.
my jag Manual shows the recess on the cone but no O Ring. Moss on the other hand shows an O Ring, presumably on the cone between it and the spacer. There was no O ring there when I dismantled it.
Could somebody confirm this O Ring is required.
One other question.
Why does the spacer have a keyway. I admit it slips over the woodruff key nicely but then slips past it when inserted into the seal. Or Am I missing something here.
i was replacing the cone on the front in preparation when I noticed a machined area on its back end. Its Kind of strange for it to be there with no apparently use.
my jag Manual shows the recess on the cone but no O Ring. Moss on the other hand shows an O Ring, presumably on the cone between it and the spacer. There was no O ring there when I dismantled it.
Could somebody confirm this O Ring is required.
One other question.
Why does the spacer have a keyway. I admit it slips over the woodruff key nicely but then slips past it when inserted into the seal. Or Am I missing something here.
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Joined: Dec 2011
Posts: 778
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From: Central California
https://mossmotors.com/xke-7744-inte...ine-6-cylinder
If you have item #17 " slinger" then you have original configuration and need #15 seal. New Teflon seal set up removes the slinger.
Moss Note on newer Teflon seal upgrade kit: Note:Jaguar recommends fitment of C40147 spacer and EAC8101 O-ring when updating to the Teflon seal. We feel this is not absolutely necessary. However, the oil slinger must be removed as this seal must be kept wet.
"" from memory the seal goes into a grove in the inside of the spacer""" investigate as I don't have confidence that this is what I did before, did upgrade to Teflon and put in full kit.. Check this out as a worthwhile addition to you engine for future tuning the engine over with just a ratchet wrench. https://mossmotors.com/37-2020-crank...-washer-by-arp
Rgds
David
If you have item #17 " slinger" then you have original configuration and need #15 seal. New Teflon seal set up removes the slinger.
Moss Note on newer Teflon seal upgrade kit: Note:Jaguar recommends fitment of C40147 spacer and EAC8101 O-ring when updating to the Teflon seal. We feel this is not absolutely necessary. However, the oil slinger must be removed as this seal must be kept wet.
"" from memory the seal goes into a grove in the inside of the spacer""" investigate as I don't have confidence that this is what I did before, did upgrade to Teflon and put in full kit.. Check this out as a worthwhile addition to you engine for future tuning the engine over with just a ratchet wrench. https://mossmotors.com/37-2020-crank...-washer-by-arp
Rgds
David
Last edited by David84XJ6; Mar 30, 2026 at 07:50 PM.
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Joined: Mar 2020
Posts: 57
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From: Stouffville
I have decided to add the O Ring, as I can’t see that changing much, as I have purchased a replacement seal ( none Teflon).
so I will leave in the slinger and not rely on the Teflon seal to stop the oil drip. On a 50 plus year old car the surfaces may not be 100% and hope that the slinger and a new seal works better.
i fitted a home made oil drip pan under this area last year after complaints from my wife due to oil drips on the driveway
so I will leave in the slinger and not rely on the Teflon seal to stop the oil drip. On a 50 plus year old car the surfaces may not be 100% and hope that the slinger and a new seal works better.
i fitted a home made oil drip pan under this area last year after complaints from my wife due to oil drips on the driveway
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