I have always known the basics of the automotive cooling system and the role of the thermostat but, your explanation of the V12's system shows how much more important it is for the thermostats to be working properly. Thanks again for sharing your knowledge.

I have never dealt with the functionality of the thermostats before. Now it is clear to me, why a V12 has thermal problems even though all components are visually in good condition. More of these videos!

Get well soon Bob! I am battling the same overheating issues that you are experiencing, I can find no reason for my overheating much like yours, new thermostats, new radiator, new black fan, everything test out fine yet on a hot day the v12 overheats. as we enter cool weather and the overheating is not an issue I’ll enjoy the car and wait until next summer hopefully you will come across a solution that will benefit the both of us. I love the channel, keep up the good work it’s so hard to find information for the XJS V12s!

@thecampchaoschronicles9567

Жыл бұрын

Thank you Phillip.

Always enjoy your explanations of the systems of the engine. Best explanation of a thermostat I've ever heard and I've been tearing up cars (and occasionally putting back together) for 40 years. (Wow, I've gotten old...)

@thecampchaoschronicles9567

Жыл бұрын

Thank you for your kind words.

@hiksnaps9134

Жыл бұрын

Thanks for an excellent video, love the detail in the explanation of how precise the thermo’s must be. Over here in Aussie land our biggest supplier of these specifies ones that are actually to short to close the bypass port… only picked it up by comparing the originals one of which still worked to the newbies when pre-testing before install. I ‘m still however at exactly the same point as you with my 85 xjsc, interested in where you go next with it. I Did complete cooling system clean & flush + thermo’s first with some improvement, just did fan clutch & fan(luckily,would have shattered to bits at some stage..cracked) but still heats to over 3/4 with aux fan coming on after about 12 mins driving at city speeds! Thinking pump impeller if metallic in nature may be corroded away?..or gone!🙃

Thank you for all the videos and shared knowledge. I've been around and worked on cars all my life but our '89 Jaguar XJS V12 requires all my skill and beyond. Your channel is a great resource and I deeply appreciate your passion in explaining the many idiosyncrasies of this fine automobile. Looking forward to future articles! Prayers going out for a successful surgery event!

Hey Robert. I hope you are doing well. Looking forward to new videos from the XJS. Many greetings Kais

Thanks for that video Bob! I never knew the details of how the thermostat worked. Most importantly, I wish you a speedy recovery and hope for your return to good health. Cheers.

I hope the surgery goes well Bob, looking forward to the next episode.

Hope you enjoy your downtime, though I'm sorry it's due to having to take care of some health issues. Hope the surgery is pretty mild on you. Stay well!

@thecampchaoschronicles9567

Жыл бұрын

Thank you so much.

Top stuff Bob, all the best for a speedy recovery. I have used Dayco No is DT18A, thermo stats here in Oz as they are cheap and suit some Ford cars. But most importantly the have the correct opening length for correct port closure.

Very Informative I myself have a XJS straight 6 4.0 Litre but I am sure the same principles apply one thing you did not mention most thermostats are available with different temprutures as to when they open anyway thanks for this video.

Love your stuff mate.. keep it up

@thecampchaoschronicles9567

Жыл бұрын

Thanks, will do!

Thanks you for all your videos and take good care of yourself!

hello bob. in hopes all goes well.... =dok=.

Your videos remind me of my father's XJS. We have replaced the Rad, rebuilt the distributor to ensure the centrifugal weights were lubricated and free, checked the timing, flushed the coolant system, burped the coolant properly. We never checked the thermostat clearance so that's something to try, but seems to run well, but it consistently "creeps up" in temp here in FL. I was thinking of trying a leak-down test next but all the "common remedies" never seemed to change anything... I see the Gates 33188 doesn't have a Jiggle Pin; on Rock Auto I see a gates 33188S listed as a premium option with the jiggle pin. Better Option? Get well soon Bob

@thecampchaoschronicles9567

Жыл бұрын

That would be the one to use.

.....years back in the seventy's eightie's and nineties....a big Jaguar dealer in my neighborhood ( also did Porsche and Lambo and Astons) would chance al the radiators of new aqcuired jaguars 12 and 6 cyl. with new radiators, with bigger cooland kanals to avoid overhead problems......

I has a S3 V12 saloon that overheated, the final fix was replacing the thermostats as a previous mechanic had fitted thermostats that did not have the bypass plunger on them, I fitted the correct thermostats and it never overheated again...

Good stuff Bob! How much centrifugal advance do the V12 distributors generally have?

@thecampchaoschronicles9567

Жыл бұрын

Roger Bywater is the guru when it comes to Jag V-12 tech. He worked at Jaguar Sport back in the glory days. I hope this answers your question. forums.jag-lovers.com/t/v12-engine-advance-info-from-bywater/128060

Hi Bob did you drill a hole in the Gates 33188 as mine didn’t have any (for jiggle pin)?

I love your show! what about under the hood superchargers circa 1989 xjs 12

@thecampchaoschronicles9567

11 ай бұрын

I've got p;ans for a couple pf special projects but I've got to get the current backlog cleared.

Do you use original gasket on thermostat cover or only silicone?

Hi Bob, do you know of any Machine shops in Michigan area or the surrounding states that will do machine work on a V12? That was the best explanation of the V12 thermostats ever! Get well soon!

@thecampchaoschronicles9567

Жыл бұрын

What type of work do you need?

@richardp6178

Жыл бұрын

@@thecampchaoschronicles9567 Not sure yet as I haven't stripped the engine down yet, I was just throwing it out there before I start. Just the usual clean skim on the head, valve work, engine cleaning, might even stretch to line bore on the mains if it's that bad (yes I know you're going to tell me to get another block! lol!) Crank work as long as they can Nitride it and I can get bearings (Yeh good luck) etc. Anything that I don't own a machine to do it with.

@thecampchaoschronicles9567

Жыл бұрын

I'm afraid I'm only familiar with local shops in the Minneapolis/St Paul area. Any shop can plane the heads. If you chose to have a local shop do the cylinder head overhaul, have them view my cylinder head videos in season one. It's pretty easy to make it impossible to set valve/tappet clearances wiithout hacking things up pretty badly. Finding someone that can align hone the block is more difficult, diesel shops perhaps. The problem is finding someone who has a tool long enough for the V12 block. Good luck with your project.

@richardp6178

Жыл бұрын

@@thecampchaoschronicles9567 Thank you for all of your help! I'm talking to a local machine shop at the moment. He'll need the dimensions of the engine to see if his tools can do the job.

The mystery continues… 🤔

Dam bro. Aint no winning. if it is the radiator and it is clogged...what could have possibly clogged it so quickly? 3 years and its clogged? im telling you these cooling systems are cursed

@thecampchaoschronicles9567

Жыл бұрын

The good news is shortly after the test run after the cooling system flush a cylinder head gasket let go. So next season we'll get a chance to see what the inside of the engine looks like. How lucky can we get? 🤔

@dantheman1998

Жыл бұрын

@@thecampchaoschronicles9567 CURSED I tell ya CURSED

@dantheman1998

Жыл бұрын

I mean...I'm thinking that something with the steel head bolts and leaky/stray current combined with aluminum block and the bronze core radiator....I mean I know that the anti-freeze is supposed to have anti-electrolosys inhibitors in it. But also how many Iron blocks have been pulled apart and the water passages are rusty. Idk just food for thought.