The 1957 "The Dope" Dauphine

Bigger is not always better, more cores are sometimes are a hinderance as they don't always allow the airflow thru the rad, Been there and got the postcard, went back to a better smaller cored rad and it worked a treat.

The coolant capacity only really affects how long it takes to boil up, if there is less heat being dissipated than generated by the engine it will always end up overheating.

I suspect it is the fan an engine driven fan will easily use a kw of energy, for an equivalent electric one that's 83 A on a 12V system or 163 on a 6V, I'm guessing your's is some way off of this!

At one point I think it was Nissan ran a hydraulically driven fan on some cars which could obviously be far more powefull than an electric one but would need a pump on the engine.

Having a quick look on line - I think it was Toyota  / Lexus who used them.

Spending way too much time thinking about this but what about trying this as a test.

Get a 12v fan and a shroud and then direct wire it to a 12v battery. Go fir a test drive and if it doesn’t overheat problem solved. If it does then move onto the next thing.

P.

ok so the gasket turned up and all you guys have given me a little enthusiasm to sort it out so I've fitted the gasket back up and torque the head down. Push rods are in and rocker back on. That will do for today before work (started back yesterday) so things might be a little slow to get sorted. I need to get down the local scrap yard and look for suitable fan setups before buying off ebay. Might possibly find an alternator down there too if I'm lucky.

yeah was a bit of a change, i love work and ive been off due to shielding for medical reasons. Was all a bit strange, effectively the only other enclosed space ive been in with people in last 5 months was my return to work yesterday. All a little bit odd. Any way this place is for the cars. Id really like to get the car somewhat usable before the weather changes so ill be on it when i can be. Ive been informed the rad i have also fits the rover/mg hatchbacks and it turns out theres a few down the scrap yard for me to hopefully pillage for a fan

No the old rad sprang a leak so that's when i replaced it. It also doesn't have the hose connections in a place that would work well with the engine setup. Tops and bottom hoses were on different sides and differing top and bottom.

Agree though 400cc less radiator capacity and less airflow through the radiator with no fixed fan.

The radiator i have is from Eurocarparts made by EIS? I've looked at the rad fans in pics and the radiators they are attached to look a lot better construction, more brazed looking than tube and fin. When i get down the scrap yard, if the rads look like a better construction or just better quality i will swipe the whole assembly and fit that in there too after measuring water volume.

Today's small amount of work included refitting the exhaust, setting the valve clearances which needed loads of adjustment strangely and cranking it over. When i refitted the head i though the pushrods were abit slack but didn't think much of it. When i came to start it it was back firing and throwing flames out of the carb. Strange, so i reset the clearances, i think i have a thinner gasket on now as they took a fair amount of taking up. Car still wouldn't start and was behaving the same. For some reason some one had mixed up the HT leads, I have an idea of who it would of been but i may have to get a camera out on the garage soon. I never removed the leads from the dizzy and left them all in place, the leads also have spark plug numbers on them.... Anyway once id put them on correctly it caught and fired up nicely, turned it off promptly as there are no hoses or rad fitted but good to know its ready to run.

I'm pretty sure they have yes. Feud with some local builders popping up 9 houses behind mine. I'm the moaning neighbour who thinks its unreasonable for them to be blaring music and singing at the top of their lungs at 6.30am. Weve had a fair few run ins now and alot of people are starting to complain but I'm quite vocal and will just walk on site and tell them, I'm also right next to them and my garage and driveway is at the site entrance. Other than them i cant think who would want to or who would know that messing the order on the dizzy cap would effect running.

all out the window with covid. 6am till 9pm and 7 days a week so I'm told. only an issue if people complain but then the complaints process is long winded. fill out time and date logs even though videos were sent showing it happening. theres a long list of complaints from lots of people now but the local council don't seem to care tbh. they will be gone soon I hope.

All plumbed in in a fashion as I'm not going to mad with making it neat and tidy yet until its all proved itself. Ran it all up and it seems good at idle, i wired the new fan to a 12v battery and fair play it moves some serious air in comparison to the "6v" fan. I will try and get the radiator totally paneled off again this eve/weekend and maybe do a quick test with the rad fan running off an independent 12v car battery (as suggested above) and see how it behaves. If it works well it can all stay in place and be tidied up if not i can look to moving everything up front.