Which type clutch should my car have?

[John Quilter]

1965 3.8S (P1B 76415DN) built in late October or early November 1964 with full syncro gearbox. Should it have the diaphragm type or the spring type? Are they interchangeable? Is there a difference in slave cylinders?

[cass3958]

C15821 is the part number listed for the 3.8s clutch and this is the spring type.

SNG Barratt list this as the correct clutch for the S type https://www.sngbarratt.com/uk/#!/Englis ... f9385e5a5a although they do list a diaphragm type clutch https://www.sngbarratt.com/uk/#!/Englis ... ba2f58dfbc but instead of it being a 10 inch clutch it is a 9.5 inch clutch and under the cars it fits it states Mk2 3.4 3.8 and 340 with no mention of the S type.

Having an Auto I have no experience in changing or working on the clutch so cannot give you any advice at to which one to fit or if they are compatible with the rest of the clutch workings you have.

[Glyn Ruck]

The diaphragm clutch is a direct replacement for the spring type. I fitted the newer diaphragm unit to my 1965 S Type. Fit's the flywheel fine. Gives you a softer clutch action. Less pressure required to disengage thus easier in traffic. If you have any doubt just buy from a supplier that will allow a return. In my case a perfect fit. I bought a genuine Borg & Beck kit. Clutch plate, pressure plate, thrust bearing & yolk clips.

Obviously skim your flywheel.

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[John Quilter]

Thanks for your reply and information. Do you have a part number for that Borg & Beck diaphragm clutch?

[Glyn Ruck]

Yup!

[Glyn Ruck]

Yup! Just checked the kit Box.

Borg & Beck HK9702.

This part fits the following models:

Jaguar S-Type Saloon 3.4 (1963 - 1968) 150kW
Jaguar E-Type 2+2 4.2 (1966 - 1975) 127kW
Jaguar E-Type Convertible 4.2 (1961 - 1975) 127kW
Jaguar S-Type Saloon 3.8 (1963 - 1968) 164kW
Jaguar XJ Saloon 6 4.2 (1968 - 1993) 124kW
Jaguar E-Type Coupe 4.2 (1961 - 1975) 195kW
Jaguar E-Type 2+2 4.2 (1966 - 1975) 195kW
Jaguar E-Type Coupe 4.2 (1961 - 1975) 198kW
Jaguar E-Type Convertible 4.2 (1961 - 1975) 198kW
Jaguar E-Type Coupe 4.2 (1961 - 1975) 127kW

[Glyn Ruck]

BTW ~ I strongly recommend you buy one of these cheap plastic clutch alignment tools. Makes life a lot easier.

clutch alignment tool1.jpg (72.47 KiB) Viewed 2494 times