Hamish Posted July 9, 2020 Report Share Posted July 9, 2020 I have a question - with the scuttle vent flap open when driving along should you be able to feel a warm air flow with the heater flaps open ? my heater puts out lots of heat but only when I have the fan on. Quote Link to post Share on other sites
RobH Posted July 9, 2020 Report Share Posted July 9, 2020 I've never noticed any heat flow just with the scuttle vent open - after all there is no sealed connection between it and the heater. No fan, no flow as far as I can see Hamish. Quote Link to post Share on other sites
iain Posted July 9, 2020 Report Share Posted July 9, 2020 Yup....it’s a primitive design! No fan no heat! Quote Link to post Share on other sites
DavidBee Posted July 9, 2020 Report Share Posted July 9, 2020 12 minutes ago, iain said: Yup....it’s a primitive design! So . .. maybe it is more useful to get heat out of the engine bay? Quote Link to post Share on other sites
BlueTR3A-5EKT Posted July 9, 2020 Report Share Posted July 9, 2020 (edited) It's a fug stirrer. Not a fresh air heater. No fan means no heat Edited July 9, 2020 by BlueTR3A-5EKT Quote Link to post Share on other sites
Lebro Posted July 9, 2020 Report Share Posted July 9, 2020 I find the same, I virtually never bother opening the flap. I suppose it could be useful to let some fresh air in when driving with the hood up, but never found it necessary. For the same reason, I never turn the heater water tap off. No fan - no heat. Bob. Quote Link to post Share on other sites
Hamish Posted July 9, 2020 Author Report Share Posted July 9, 2020 (edited) But there is a connection between the two right ? im with bob in never turning the water connection tap off. I have been known to use the heater to keep engine temps down in various older cars my dad used to say cook the driver not the engine ! Edited July 9, 2020 by Hamish Quote Link to post Share on other sites
MilesA Posted July 10, 2020 Report Share Posted July 10, 2020 11 hours ago, Hamish said: I have been known to use the heater to keep engine temps down in various older cars my dad used to say cook the driver not the engine ! +1 I used to open the flap even with the roof off too cool(?) the footwell given all the radiant heat from the engine bay / G'box cover, but insulation installed over the winter has dealt with that to a good degree. As my car seems to run 'warm' I always keep the heater tap open and in the summer often run the heater through the screen vents. I am not aware of the additional hot air. If you want to do this check that your hoses are (a) connected and (b) intact - they do degrade. As me how I know... Miles Quote Link to post Share on other sites
Ralph Whitaker Posted July 11, 2020 Report Share Posted July 11, 2020 On 7/9/2020 at 10:31 PM, Hamish said: But there is a connection between the two right ? No. The vent flap just directs fresh air into the car, aiming it towards the bulkhead and not at the heater. If you had the heater fan running at the same time it might draw a bit of this fresh air through the heater and eject it out the bottom warmed up. Car designers of old seem to be fixated with making sure you stayed cold, for example, my 1948 Hillman Minx has no heater, but has a scuttle vent on each side aiming cold air straight at the side of your leg, an opening windscreen to aim it at your face, and an opening roof panel. Obviously the target markets were places like Australia, India and the like. Ralph Quote Link to post Share on other sites
Hamish Posted July 11, 2020 Author Report Share Posted July 11, 2020 Thanks Ralf. I really thought the vent fed the heater. live and learn thankfully. Quote Link to post Share on other sites
james christie Posted July 11, 2020 Report Share Posted July 11, 2020 Tweren’t very long ago that heaters came off the options list and became standard spec.! james Quote Link to post Share on other sites
JeffR Posted July 12, 2020 Report Share Posted July 12, 2020 Remember these cars were made for export - generally to much warmer climes. I've found the vent useful occasionally in the summer for cooling the footwells. It doesn't add much to heating though in the winter with the majority of the coldincoming air circumventing the heater. JEFFR Quote Link to post Share on other sites
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