As best I can make out neither schematic seems to have the heat exchanger ( oil heater/cooler) that is part of Dave`s schematic...? It appears it would suffer just as 3.0 Roadsters and other trads if air-con option was fitted and therefore benefit from the same cure. Important (maybe more than other models) that a three way valve is used though to maintain flow through heater pipes when matrix taken out of circuit. This would need to be fitted on heater inlet plumbing and require a second T junction to supplement the existing (41). A four way valve may offer a simpler plumbing solution, ideally a two state type rather than proportional control via rheostat. Either would work though with return flow maintained under all settings.
Interesting thoughts Richard. Thank you. We can all cogitate. It would help the Roadster fellows immensely, AQC or not. The other AC cars seem to have the same setup. .
Thanks Lorne, for clarity though you appear to have included part of a post from George in your quote from me, which I've highlighted in blue.
For the record the parts book image I posted was for the substantially different 3.7 V6 cooling system as mentioned, and I have no problem with it. This is the Roadster model I'm familiar with having owned one for well over 4 years and to satisfy my OCD
I now have a thorough understanding of its cooling system design and operation.
I accept you wish to keep topic on 3 litre Roadsters though and agree there were multiple errors in the 2006-14 Classics parts books covering these. Strangely none showed in the relevant diagrams the oil filter heater/cooler as George has observed. I would have expected this to be plumbed in parallel with cabin heater feed/return.
Despite this and try as I might, I cannot understand the flows on DaveW's diagram of his S1 Roadster cooling system. Would appreciate an explanation myself.
