ianc Posted March 17 Report Share Posted March 17 The control valve on the rear of the cylinder head never cut-off the feed to the heater, So, in order not to get baked in the summer, I inserted a cut-off valve, of the type used to isolate water supply to washing machines & dishwashers, between the control valve on the rear of the engine and the feed to the heater. In warm weather, I just turn the valve to "off". The cockpit then is warm rather than roasting! Ian Cornish Quote Link to post Share on other sites
Teher Posted March 23 Author Report Share Posted March 23 That’s exactly what I did on my Caterham, so I wouldn't end up with legs like sequoia trunks… Quote Link to post Share on other sites
Ralph Whitaker Posted March 24 Report Share Posted March 24 I fitted the TR4 type valve while building my TR3a. Unfortunately the new valve will not fully turn off, it being very stiff right at the end of the travel. I have to open the hood and turn it the last bit by hand, however with the fan off and the flaps closed it is bearable until I get chance to fully turn it off. Ralph Quote Link to post Share on other sites
Ian Vincent Posted March 24 Report Share Posted March 24 On my TR3a I leave my heater valve on the head open all the time. I can’t recall ever being too hot although I do only have the original ‘grannies breath’ heater fitted. In summer the hood is usually off and the heater doors closed. Rgds Ian Quote Link to post Share on other sites
Lebro Posted March 24 Report Share Posted March 24 +1, same here, valve always open. Without the fan going virtually no heat escapes from my original Smiths unit, but with the fan going it is quite effective. I hav almost never opened the vent, it does not seem to provide any benefit Bob Quote Link to post Share on other sites
Hamish Posted March 24 Report Share Posted March 24 (edited) I previously thought that opening the vent directed airflow through the heater. But apparently it doesn’t ??!! I sometimes use the cab heater to reduce engine temps. dad used to say cook the driver not the engine. And if the heater runs cold you are out of coolant !!!! Edited March 24 by Hamish Quote Link to post Share on other sites
iain Posted March 24 Report Share Posted March 24 +1 to running with heater valve open.....T7 Heater no issues. Its only when the fan is running that it gets too toasty! Unfortunately my original Smiths heater needs massive surgery which it will get one day. Iain Quote Link to post Share on other sites
Teher Posted March 25 Author Report Share Posted March 25 (edited) Last war paint. The front mask is in paint and the frog is going to stop the lipstick... And what dashboard ! Edited March 25 by Teher New photo Quote Link to post Share on other sites
Hamish Posted March 25 Report Share Posted March 25 I like the white grill surround and was considering it on my 3a but I think that highlight really suits the small mouth car. a 10dial dash !! sharing with the passenger helps. Quote Link to post Share on other sites
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