Originally Posted by
101RRS
W
If I ever get my cars going I will be putting one in where the extra tank captures the coolant and lets it back when the system cools.
The original system worked perfectly OK when the Series I's were new, mine works perfectly OK now. Why change something that works ?
Interesting comment about why header tanks seem 'standard' now....I wonder what the real reason is ?
If it's a non-pressurised header tank it allows the non-technical to check the fluid level while hot without getting scalded. Maybe this is the reason ?
It also allows the radiator to be kept absolutely full at all times so it would increase efficiency. If you check underbonnet regularly you would spot a drop in water level before it compromised cooling.
I used to run Austin Somersets in the UK, these had a non-pressurised system. The radiator was so oversized that you didn't need to raise the boiling point of the coolant by having a pressurised system. As mentioned earlier, smaller radiators probably have to run at 100% efficiency to stop overheating.
Colin
'56 Series 1 with homemade welder
'65 Series IIa Dormobile
'70 SIIa GS
'76 SIII 88" (Isuzu C240)
'81 SIII FFR
'95 Defender Tanami
'58 Series II (sold)
Motorcycles :-
Vincent Rapide, Panther M100, Norton BIG4, Electra & Navigator, Matchless G80C
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