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Flywheel Ring Gear

Flywheel Ring Gear

One for the experts....
does anybody know of a supplier of ring gears that can be shrunk on to the
XK 140 / 132 tooth flywheel please?
- John Morgan

Moss Motors. Check the xk-lovers archives, there was quite a bit of
discussion on this subject a few months back. Check the clearance between
flywheel teeth and starter teeth, should be about 1/8 inch. This is
crucial, too much or too little will cause premature wear. Sometimes seems
to be due to mixing and matching of substitute flywheels, bell housings,
-Rob Reilly

If you have access to the club magazine from theJaguar Enthusiasts in UK
check out what they wrote about 12-24 months on this topic. If I remember
right, their tech guru Ken Jenkins addressed tooth profiles, counts and
configuration of the ring gears for each XK model as well as the calamities
which they have seen from picking the "wrong ones". Lyons' role on this
earth was to make it more complicated....not simpler.
- Klaus Nielsen

Bill Tracy advertises, "We have ring gears for all flywheel you change it",
$98.00 ea.
- Dick Cavicke

You can have your ring gears refurbished by a specialist company. They will
typically shotblast the part, machine turn down, re-fit ring gears and then
surface grind it down to the correct size.
One company that I have used is Engine Machining Services - the leading
Classis Jaguar engine remanufacturer. Costs are approx £148 plus VAT for
this service.
Tel: 01909 482649 and Fax: 01909 479033 or email on
Try also VSE who specialise in XK engines. They should provide this
service. Visit the web site on:
- Dave Roche

The flywheel ring gears have to be fitted by a machine shop usually because
they will not just shrink in place that I am aware of. I have a couple of
new ring gears (132 teeth) in stock for $69.95 plus shipping.
- Hal Rogers
H.D. Rogers & Sons
Import Auto Specialists

In relation to the query on ring gears and fitting to the flywheel, VSE in
the UK ( can perform this service. Their costs are quite
reasonable at £30 for the supply of the new ring gear and £15 to fit to the
flywheel. So £45 Plus VAT and carriage all in.

VSE would machine the old ring gear off, put the new ring gear in an oven
to heat up and then knock onto the flywheel to fit.
- Dave Roche

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