Aluminium Nacelle / Switch Cover / Cowling
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Without a part number it is a fools errand to chase it. I have not seen any bulletin about a change so it is entirely possible the material was changed at some point but if all would interchange w/o modification then the part number would not change so no trail. The E types used metal covers until 1968 or so. I did not realize the part was ever Bakelite as the ones I am familiar with are plastic but there were other models that used a similar cover. It could be a prototype or perhaps from a 3.8L Mk10 (which had heavier parts than other cars--I will look. I think the real test will be if all of the guts from the plastic Nacell fit properly into the alu. one. Also the cover is a tight fit at the wood and perhaps a squeak was a problem with metal--that plus alu. is conductive! Best of luck--why not ask the seller why he made his statement/
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Bakelite is a plastic, it was the first synthetic plastic to be produced. and was used for it's ease of moulding, heat resistance and non-conductive properties, as far as I am aware all Mk2 Nacelle's are Bakelite, as were the switch knobs, this is why they did not deteriorate much, Bakelite is very UV stable, it does oxidise which is why it goes a browny shade, this can be polished off and the parts are as new.
Could be a prototype as you say George, but someone went to quite a lot of trouble to cast one in aly, would be interesting to know why and what for.
The Mk10 used part C16790/1 which now supersedes to C16792 which is the same part no for the Mk2.
Could be a prototype as you say George, but someone went to quite a lot of trouble to cast one in aly, would be interesting to know why and what for.
The Mk10 used part C16790/1 which now supersedes to C16792 which is the same part no for the Mk2.
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the clear window, the overdrive emblem, and the turn signal and overdrive indicators assembly from the plastic nacelle fit exactly and perfectly in the aluminium nacelle. They are identical. I found another lettering punched into the metal, it reads "K88".
I finished sanding the top half and will prime it today. After I'm satisfied with the priming, I will paint it and assemble it and post a picture.
I finished sanding the top half and will prime it today. After I'm satisfied with the priming, I will paint it and assemble it and post a picture.
Last edited by Jose; 06-10-2018 at 01:20 PM.
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Well I did take a look--the MK 2 used at least 3 different upper nacelle numbers and 4 lower ones--some of this is OD related of course The 3.8L Mk 10 used one upper and 2 lower and the illustration in the parts manual looks exactly like Jose's picture with the starburst reinforcement pattern. The 4.2 MK 10 a different upper and one of the 2 for lower was the same. The DS 420 used a unique upper lower although they look the same. There are no technical bulletins or spare part bulletins that address a materials change but the J12s do show supersession to the last parts in the catalog(ue)s.
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Tilly old switches at least in NA can turn almost clear but def. opaque. Steering switch covers do turn dull but not brown. In fact they dull over time exactly like the horn push bar. Let's agree that the cover on the plastic WW bottle motor is Bakelite. Those do turn brown and will polish although I have never been able to make them gloss black again without cheating! Sure may be wrong but all dull Bakelite I have seen has a sort of strata in it.
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I hear you but to be honest the cut out on the left side is not large enough for O/D as I see the image. Does that small slot on the lower nacelle seem to be cast or cut out? Also something to consider is there were Police cars which may have had a different spec for switches as well as the DS 420 which were almost a throw back to coach builder times.
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Jose you got me---it is a shame the seller will not share some information with you. As said before there were police and special order cars. I do not know of a production Jaguar that way. jaguar also sold cars to many countries so that may have been a requirement although the parts catalogs do not list such.
WAIT WAIT Wait
According to Paul Skilleter in Jaguar Saloon Cars (ISBN 0 85429 263 20) P. 252 discussing changes to the MK2 he states "A further change in controls had taken place...in June 1960 the controls on the upper steering column were re-handed--that is the flasher/ indicator 'stick' went to the left and the overdrive switch (when fitted) went to the right'. So Jose I now think you have a cover from a very early car (Mk2).
WAIT WAIT Wait
According to Paul Skilleter in Jaguar Saloon Cars (ISBN 0 85429 263 20) P. 252 discussing changes to the MK2 he states "A further change in controls had taken place...in June 1960 the controls on the upper steering column were re-handed--that is the flasher/ indicator 'stick' went to the left and the overdrive switch (when fitted) went to the right'. So Jose I now think you have a cover from a very early car (Mk2).
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