cass3958 wrote: ↑Mon Apr 15, 2019 3:12 pm
Love comparing these photos of the engine layouts.
Plug Leads.
Orlando, Glyn and myself all have the plug leads coming from the distributor over the top of the Cam cover whereas Alan and Jose have there plug leads coming up the front of the engine bedside the coil and through the valley of the Cam covers.
I know the reason mine comes over the Cam cover and that is because when I bought new leads thay were quite short even though they were supposed to be for the Jaguar engine and they only just stretch across the top of the cam cover.
So the question is which way should the leads lie?
Both are correct at different times. The sheathed wires & the wires running through circular separators via a chrome ring under the cam cover domed nut into the cam valley wire conduit. My car is set up as original.
The Distributor cap, wires, circular separators, split copper washer end connectors, acorn nuts & Champion Bow Tie plug caps (as Alan & I use & JCNA consider authentic) were sold as a complete replacement set by Jaguar Dealers 25 years ago for S Type & other models under a Jaguar part number.
Early cars did not have engine lifting brackets.
Rob, Further regarding plug wire treatment ~ Orlando has covered the sheath. This is the alternative method used during S Type production.
1966 SA car built about 6 months after mine & as mine was originally (This was a concours winner about 20 years before I took this picture ~ now deteriorated.)
Jaguar 3.8 engine 014.JPG
As shown in the Workshop Manual.
Plug wires manual.JPG
Plug lead clip still available.
Plug lead clip.JPG
Plug lead clip C19890 was also used during production
I wonder when Jaguar changed the spark plug wiring setup on the S Types? or maybe they did both at the same time. I spent some time going through the Jaguar Service Bulletins today, and while I did not find any direct reference, I did come across the following information.
Bulletin A.75 - In 3/1962, the E Type setup was changed to clip C19890, grommet 3204 and distance piece C2155, bolted to the front of the timing cover. Plastic sleeve C19899 covered the wires as they went over the cam covers. This is the exact setup as shown in my J.35 S Type parts manual and is what I used on my car.
Bulletin A.121 - In 9/1963, this same setup is now used on the Mark 2 cars.
Bulletin A.139 - In 4/1964, the conduit for the wires in the head was changed to C23608 (I don't know what the previous conduit was).
Bulletin A.146 - In 8/1964, lifting brackets C23607 were added to engine 7B62362 and subsequent. Plain washers under the dome nuts at the brackets. Wire conduit was changed again to C24126 (this appears to be the one available today). Plain washers have a chamfered edge and no finish.
Anyway, I just thought this was interesting stuff. My wire clip is shown below and a shot of the bundle going down at the breather housing under the coil. That was about the only place to go.
Attachments
s type plug wires 002.JPG (2.02 MiB) Viewed 3349 times
s type plug wires 001.JPG (2.28 MiB) Viewed 3349 times
1964 3.8 S Type LHD DG Auto Opalescent Silver Grey over red
1966 E Type FHC Carmen Red over black
awiedie wrote: ↑Tue Apr 16, 2019 8:28 pm
I wonder when Jaguar changed the spark plug wiring setup on the S Types? or maybe they did both at the same time.
Anyway, I just thought this was interesting stuff. My wire clip is shown below and a shot of the bundle going down at the breather housing under the coil. That was about the only place to go.
I can't trace when things changed. All I know is from cars I've discussed with their owners around the world and local evidence. A standard & correct S Type is an elusive thing.
This was a multiple JCNA winner with another take on the theme.
so that's what that clip is for !! I have it but nothing going through it and I had no clue.
By the way I cropped and reduced the size of the picture to 137 KB from 2.3 megabytes. It was awfully big and takes forever to render.
All the road test cars I'm aware of have the set up with sheath and clip/grommet as you describe. The Autocar road test car I posted above is from a March 1965 road test (so probably a 1964 car) and there are Road & Track (10/64) and Motor (12/64). So, I guess we can infer that this arrangement was in place by, say, September 1964 at latest.
1965 Jaguar 3.8S RHD DG Auto, Opalescent Maroon/Beige Leather, Varamatic PAS - one-family-owned from new
Yes ~ that might be so for Browns Lane cars but CKD cars that only started build very late 1965 were commonly as my & Roy Mc Bride's 1966 Carmen Red car. So maybe factory practice for the approx 1000 CKD kits sent to SA was different. I should also point out that early builds (1964) were notorious for being variable and not good examples of what became standard practice.
That said I do think the sleeve was more prevalent.
Jose wrote: ↑Tue Apr 16, 2019 9:05 pm
so that's what that clip is for !! I have it but nothing going through it and I had no clue.
By the way I cropped and reduced the size of the picture to 137 KB from 2.3 megabytes. It was awfully big and takes forever to render.
Sorry about the picture size, Jose. I guess my camera setting determines that. I'll have to figure out how to reduce them before posting. And I also guess I need to do some dusting in my engine compartment!
1964 3.8 S Type LHD DG Auto Opalescent Silver Grey over red
1966 E Type FHC Carmen Red over black
Alan, I notice your clip C19890/C25127 is positioned vertically. Do you know that is how it should be? There is an image of the same clip on an E-type on the E-type forum which shows it mounted horizontally. Just curious, really, as no-one will ever see it or know any different!
ignition wiring mount c19890.jpg (37.98 KiB) Viewed 3296 times
Alan you can set your default image size right at the camera.
Look for Settings / Default Image Size in Pixels. 900 pixels width or height is a very good size. 3,000 pixels consumes a lot of bandwith and renders images slowly.
In fact some of the images uploaded are excessively large. Maybe we need to setup a maximum megabyte amount for images, or an automatic size reducer. Some forums already do that.
You can't make resolution where there is none. The best you can do is the native resolution of the image. If the native resolution is only 900pix that's the best you can do.
