Hello Steve
Yes that’s another way that could work…would have to be powerful fans though as you said
I was just thinking the extenders could be a simple way to do this without going to the expense of fitting new fans and would be easy to take on or off if and when you needed them or thought you may need them.
Hello Adrian
I’m an engineer and I always find a little something to modify on most things I buy as the saying goes if you not got a problem then you make one so you can solve it
……….but seriously I know the cars are 50 years old and components will wear but things wear quicker in a hot environment that’s a fact… the Engine Oil, HT Leads, the wiring looms, plastic components etc all will have their life shortened drastically due to being in a high temperature environment.
The other thing that has changed is the amount of traffic on the roads how many times do you get stuck in traffic now compared to 50 years ago or even 30 years ago.
Im stuck in traffic every day for at least 10mins
I even see modern cars overheating in traffic jams I would feel more comfortable sitting there in my Jensen with my bonnet raised than not, after all if your cars getting too hot you either drive faster to get more airflow (not an option when you stuck on m25 bumper to bumper) or pull over and open your bonnet.
The engines would have run cooler when new I agree, the radiators would have been clean as would all the pathways through the block etc……but most people’s cars are not like new now and a lot of people don’t want to go to the expense of making them like new again.
For me the engine and gearbox are positioned too far back in the engine bay also proportion wise the engine bay is too small and does not allow for airflow around them I know at design stage this may have been done for a number of reasons one probably to allow for better weight distribution etc. but you wouldn’t design it like that now.
Am I going to start rebuilding the engine bay and gearbox tunnel to allow for more airflow of course not but the car would certainly run cooler if the engine bay was larger and the gearbox wasn’t so far back in the tunnel.
Also when driving the car you can feel the heat building up from inside the car especially without the air con on.
You can only insulate the bulkhead so much so perhaps something as simple as lifting the bonnet would make the heat transfer less due to the air now having an escape route.
The engines were not designed for Jensen’s as I’m sure you already know
If you checked the temperatures of these engines running in other cars or trucks you would I’m certain see that they would not be running as hot as they do in a Jensen
I agree that heat build-up will continue after the car is stopped but most Jensen’s have the fans running on a circuit with a thermal cut-out so the fans keep running after the car has stopped until the desired temperature is achieved then they cut out so that problem has already been addressed
As I mentioned earlier it’s in continual slow moving traffic or traffic jams when the cars get hotter when driving at say 50-70mph I think the air probably does get expelled or cooled down.
When I get some made ill update you….Joe seems further ahead with this so he may update sooner
Finally all these posts are about maybe making your car run better and offering possible alternative solutions or suggestions they are not saying you have to do this or that and the bonnet extenders seem to have been looked at before so not a new idea.
We all have our cars and do things to them that perhaps other people don’t think are necessary but surely that’s all part of the fun.
If I wanted a car I didn’t have to mess around with I would have got an Audi S5 or something but I like tinkering and so do a lot of people on the forum and most do a much better job on improving their cars than I do.
Whatever way I look at it I still think if we can reduce the build-up of hot air in the engine bay this can only be a good thing whether everyone agrees and thinks this needs to be done or not is another question
Gary C