The Doctors Coupe - SRE 353G

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stewb
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The Doctors Coupe - SRE 353G

Post by stewb » Wed Nov 07, 2018 11:31 pm

Tin cars do rust very well!

I presume the Jag is an auto? Vast majority were, nice motors but they do rot well.

I'd advise against making a new heater....I've done that on the TVR & hate to think how many hours have gone into it....ended up worse than project Binki (youtube if you've not already seen it). To be fair based on your progress you'd get it done in no time!

Stew.


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The Doctors Coupe - SRE 353G

Post by BigBobPilot » Thu Nov 08, 2018 9:57 am

I had no intention of making a new heater unit, just making the most of what's there. Definitely not Project Binky style.

Yep, the XJR is an auto.


Ben

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The Doctors Coupe - SRE 353G

Post by BigBobPilot » Sun Nov 11, 2018 10:24 am

The heat control cable wasn't connected to the valve on the engine when I bought the car. Nick (previous owner) advised me that it didn't work, which is why it was disconnected.

At Curborough, I asked Nigel from QRG, he didn't have cables, but suggegted leaving the outer in place & replacing the inner with piano wire. I think I asked at the GW stand too, but no joy. I'd been looking at Triumph cables, as I knew my Spitfire had a similar arrangement. I did buy a cable for a Spitfire when I was getting some other things, but it was way too short.

Recently I happened across a Jaguar cable, which has the pig tail for the control knob & is longer than required, so can be cut down. I have fitted just the inner to the old outer, and I had to cut about 6" off the inner & it's all in situ. Should anyone need on it is Jaguar part no. C21373, from E-types & Mk 2

http://www.jagspares.co.uk/Manners/part ... tno=C21373

Here from top to bottom are:

Spitfire heater cable
The cable inner from my car, you can see it was not rigid enough
The Jaguar cable
20181109_132727.jpg
20181109_132727.jpg (62.73 KiB) Viewed 338 times
Here's the pig tail end on the Jaguar cable.
20181109_132735.jpg
20181109_132735.jpg (58.39 KiB) Viewed 338 times
I put a half twist on the end of the cable, so that it is naturally trying to rotate itself on to the spigot
20181111_100047.jpg
20181111_100047.jpg (132.18 KiB) Viewed 338 times
Unfortunately, that's not quite a fix. It pulls ok, but the push on the valve is not working. This is probably a combination of the old outer stretching (unravelling the coiled outer to expand - you can see it) when the cable is pushed. And probably the valve being stiff. As it's clearly going to take a bit longer, I'm leaving it for now, as the heater matrix is not plumbed in anyway... I'll cahnge the outer for the new one as a starting point, I guess I'm going to have to look at the heater valve too though.


Ben

SS1 CA18DET race car in build
Latest owner of V6 coupe SRE 353G
SSSC Champion 2009, driving "Big Bob"
CSCC "Swinging 60s" race series winner in 2011, 2014 & 2015 (Group 2) sharing a Marcos with Iain Daniels

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The Doctors Coupe - SRE 353G

Post by David Tew » Sun Nov 11, 2018 11:21 am

Thanks for that Ben. Mine has snapped just after the "pig's tail" and I was wondering about the best fix. You've found it! :D

One for the next edition of Alterparts. :wink:
Last edited by David Tew on Sun Nov 11, 2018 11:30 am, edited 1 time in total.


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The Doctors Coupe - SRE 353G

Post by scimjim » Sun Nov 11, 2018 11:28 am

I think I used a cable from a Triumph of some description, but can’t find the details :(


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The Doctors Coupe - SRE 353G

Post by stewb » Sun Nov 11, 2018 7:27 pm

Guess the cables can be obtained from MG places too as the rotary mech was used on them. CBS do a nice line in push pull cables too. Valve is probably a bit stiff, not sure what type of valve the Scim uses, I used a Taxi valve (there are a few versions with & without bypass) but they use 5/8" stubs so might not be suitable if the heater circuit is 1/2". The new valves need very little force to operate.

Stew.


Ex Owner of MK2 Scimitar Sabre CA18DET
'69 Tuscan V8 project which wasn't meant to be a project....
Capri 2.8 Injection Special
'09 GTM Libra - Honda K20 VTEC

"if you do something to be impressive rather than good, you're doomed" - Spen King

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The Doctors Coupe - SRE 353G

Post by Roger Pennington » Sun Nov 11, 2018 8:38 pm

My SS1 has a push-pull piano wire "cable" for the heater water valve :)


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The Doctors Coupe - SRE 353G

Post by Coupe Racing » Sun Nov 11, 2018 8:41 pm

David Tew wrote:
Sun Nov 11, 2018 11:21 am
Thanks for that Ben. Mine has snapped just after the "pig's tail" and I was wondering about the best fix. You've found it! :D

One for the next edition of Alterparts. :wink:
Why not remake the pig tail ?
I have done it successfully before


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The Doctors Coupe - SRE 353G

Post by David Tew » Sun Nov 11, 2018 8:57 pm

I tried that but the inner cable is then too short. I shortened the outer to suit and it was then pulled too tight to operate properly. New £7 cable it is then. :D


SE4B Coupe - rebuilt on brand-new chassis.
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