V12 engine, top heat deflectors

Talk about the E-Type Series 3

Topic author
Dachr
Posts: 6
Joined: Mon Jun 24, 2024 7:03 am
Denmark

#1 V12 engine, top heat deflectors

Post by Dachr » Thu Apr 10, 2025 9:41 am

My car has a pair of longitudinal aluminium heat shields/deflectors above the inlet manifolds, I assume to direct heat out of the bonnet louvres.

Mine are damaged and need replacing so I have been trying to find out what they are called so I can order a new pair. However.... I notice that some people have removed them. Given that I live in Denmark with a climate a bit like a cool northern England, are they really needed? I am going to say yes, however I am curious about other peoples thoughts on them.

The things at the top of the engine in this image:

Image
David

1973 S3 2+2 in Regency Red

Link:
BBcode:
HTML:
Hide post links
Show post links

User avatar

lowact
Posts: 706
Joined: Mon Oct 09, 2017 10:05 am
Location: Canberra, Australia
Contact:
Australia

#2 Re: V12 engine, top heat deflectors

Post by lowact » Thu Apr 10, 2025 10:22 am

They're "Rainshields". P/N C35727. Supposedly to stop the sparkplug recesses filling up with rain water ...
Regards,
ColinL
'72 OTS manual V12

Link:
BBcode:
HTML:
Hide post links
Show post links


Topic author
Dachr
Posts: 6
Joined: Mon Jun 24, 2024 7:03 am
Denmark

#3 Re: V12 engine, top heat deflectors

Post by Dachr » Thu Apr 10, 2025 10:52 am

Thank you, and available in stainless as well :)
David

1973 S3 2+2 in Regency Red

Link:
BBcode:
HTML:
Hide post links
Show post links


Craig Balzer
Posts: 78
Joined: Fri Mar 03, 2017 2:02 am
United States of America

#4 Re: V12 engine, top heat deflectors

Post by Craig Balzer » Thu Apr 10, 2025 3:32 pm

I just purchased new rain shields from Barratt's (USA); I opted for the stainless steel variant. Three points for SIII owners ref these shields:

(1)The shields come with 4 mounting holes pre-drilled. Ya only need 2 but Jaguar changed the mounting technique mid-stream so these will fit early and late SIII models. I would have preferred to ID which pair of holes I wanted (don’t like the look of 2 unused ones atop the engine)

(2) And - boy are they heavy/thick; I was surprised at the weight of the shipping box. Now I know why. On-the-car old shields (prolly aluminum) weigh 0.4 lbs each (they are stained with something that is NOT coming off). The new stainless steel shield: 1.2 lbs each

(3) Annnnd - the new ones have a slightly shallower angle:

This I think I’ll like. Look at any SIII under-bonnet and 2 times outta 3 there’ll be scraped off paint where the incorrectly installed rain shield was mounted (someone put them on backwards) and road vibrations rubbed a hole in the paint.

Image

This shallower angle ~might~ preclude such paint damage (the stainless steel new shield is on the bottom).
Years ago a Jag-Lover posted his approach to paint damage avoidance (I failed to note his name – you still here?) :

Image
Craig Balzer
Colorado Springs, CO, USA
1972 Series III OTS, 4-Speed (soon-to-be a Guy Broad 5-Speed), A/C, CWW

Link:
BBcode:
HTML:
Hide post links
Show post links

Post Reply Previous topicNext topic