SteveC Posted 5November, 2016 Report Share Posted 5November, 2016 I don't understand why the early 911 cars have head exchangers where the headers are, and water cooled ones just have the headerswhat exactly is inside these and could these be changed for normal headers? they look quite bulkyif they are to cool the oil, why are these heat exchangers built inside the headers? wouldn't it make more sense to put a radiator at the front of the car to do this? Link to comment Share on other sites More sharing options...
GUT Posted 5November, 2016 Report Share Posted 5November, 2016 They're to heat air for the heater.If you didn't have them, you wouldn't have heat in the car. Link to comment Share on other sites More sharing options...
Raven Posted 5November, 2016 Report Share Posted 5November, 2016 correct if you do not require heat in you cabin you can do away with them and run normal headers ,,,,,,,,,,,,,,,the links will help you out car makers generally use the water cooling an engine to generate the heat you require for you cabin heater via running it to a small under dash radiator with a fun behind it to push the hot air around the cabin ,,,,,,,,,,,,Air cooled 911,s use heated air that is generated from the heat exchanger to heat the cabin http://forums.pelicanparts.com/porsche-911-technical-forum/309147-explain-difference-betwen-headers-heat-exchangers.htmlhttp://forums.pelicanparts.com/porsche-911-technical-forum/32219-how-do-heat-exchangers-work.html Link to comment Share on other sites More sharing options...
SteveC Posted 5November, 2016 Author Report Share Posted 5November, 2016 so sans heather you could fit a 997 style header? Link to comment Share on other sites More sharing options...
Russ Posted 5November, 2016 Report Share Posted 5November, 2016 yes, you can buy exhausts without the heat exchangers/heater boxes. there's a variety of brands Link to comment Share on other sites More sharing options...
clutch-monkey Posted 5November, 2016 Report Share Posted 5November, 2016 so sans heather you could fit a 997 style header???heater boxes are just boxes for passing air through.water cooled cars have a conventional heater core coming from the coolant circuit.once you cut the heater boxes off they are just normal extractors underneath. which can be made by any half decent exhaust shop. Link to comment Share on other sites More sharing options...
Harvs11 Posted 5November, 2016 Report Share Posted 5November, 2016 You guys have no idea. The exchangers are to funnel eau de dinosaur into the cabin so everyone you meet can sense you've driven a proper 911 ? Link to comment Share on other sites More sharing options...
Stew F Posted 5November, 2016 Report Share Posted 5November, 2016 You guys have no idea. The exchangers are to funnel eau de dinosaur into the cabin so everyone you meet can sense you've driven a proper 911 ?How true. Last sunday I said to @LeeM that my car stinks inside coz i had the heater on. Link to comment Share on other sites More sharing options...
LeeM Posted 5November, 2016 Report Share Posted 5November, 2016 Every time I turn the heater on, you can smell 1978! Then it gets too hot after 3 minutes, so I have to switch it off Link to comment Share on other sites More sharing options...
SC 3.2 Posted 5November, 2016 Report Share Posted 5November, 2016 I run European Racing headers and thus no heater, In Brisbane I can easily live without a heater but from a legal standpoint you need a demister to be roadworthy,however you can set the front blower to direct outside air to the demisters to keep the inside of the screen clear,although I rarely drive in the rain.The car is lighter ,does not smell of Grizzly Bear- so win win. Link to comment Share on other sites More sharing options...
Russ Posted 10November, 2016 Report Share Posted 10November, 2016 How true. Last sunday I said to @LeeM that my car stinks inside coz i had the heater on.if you're lucky the flappers stop closing properly so you get to smell like that all the timeEvery time I think of removing my heater I'm reminded of driving through Guyra on the way back from one of Uncle's scotch nights, where it started snowing and i really appreciated that heater Link to comment Share on other sites More sharing options...
Shorty911 Posted 16November, 2016 Report Share Posted 16November, 2016 I once had to straddle parts of a dead Kangaroo on the freeway.The roo bits were a little too high and it hit the heat exchanger on the way under the car.... needless to say the car smelt like a rotting bbq! Link to comment Share on other sites More sharing options...
Harvs11 Posted 16November, 2016 Report Share Posted 16November, 2016 I once had to straddle parts of a dead Kangaroo on the freeway.The roo bits were a little too high and it hit the heat exchanger on the way under the car.... needless to say the car smelt like a rotting bbq! ah...good memories of slow roasted critter, cooked for 4 1/2 hours at 100kmh Link to comment Share on other sites More sharing options...
Stew F Posted 17November, 2016 Report Share Posted 17November, 2016 ah...good memories of slow roasted critter, cooked for 4 1/2 hours at 100kmh Dude, spare us. or you could fit one of these.http://speedyairspares.com.au/products/12V_ELECTRIC_480W_40A_Heater_Defrost_Unit_4_Duct_Outlets_NO_ENGINE_WATER_REQUIRED_FEATURES_A_2_FOOT_SWITCH_HARNESS_FOR_DASH_MOUNTING_OF_SWITCH-775-16.html Link to comment Share on other sites More sharing options...
SimonN Posted 17November, 2016 Report Share Posted 17November, 2016 or you could fit one of these.http://speedyairspares.com.au/products/12V_ELECTRIC_480W_40A_Heater_Defrost_Unit_4_Duct_Outlets_NO_ENGINE_WATER_REQUIRED_FEATURES_A_2_FOOT_SWITCH_HARNESS_FOR_DASH_MOUNTING_OF_SWITCH-775-16.htmlHas anybody any experience with these? I would be very tempted so that i could do away with heat exchangers when I get new headers. Link to comment Share on other sites More sharing options...
Stew F Posted 17November, 2016 Report Share Posted 17November, 2016 I had a similar thing in my hotrod. It did the trick. Link to comment Share on other sites More sharing options...
MFX Posted 17November, 2016 Report Share Posted 17November, 2016 Has anybody any experience with these? I would be very tempted so that i could do away with heat exchangers when I get new headers.I would like to know as well, as I currently have headers without heat exchangers. I was planning on building heat exchangers over mine, but that could be a good alternative. Link to comment Share on other sites More sharing options...
tomo Posted 17November, 2016 Report Share Posted 17November, 2016 Singer / Porsche uses a electrical heating / demist system as well,Not much info on how it is adapted though. Link to comment Share on other sites More sharing options...
clutch-monkey Posted 17November, 2016 Report Share Posted 17November, 2016 teutonic on here has an electric heated screen, worth a shot. Link to comment Share on other sites More sharing options...
tomo Posted 17November, 2016 Report Share Posted 17November, 2016 Singer uses this mob :http://www.proairllc.com/units/Espar Link to comment Share on other sites More sharing options...
SimonN Posted 18November, 2016 Report Share Posted 18November, 2016 Singer uses this mob :http://www.proairllc.com/units/EsparAs you would expect from Singer, the best of the best! However, I am not sure I want to plumb in a system that is connected to and burns fuel, plus it will cost something like $2-2500! But I bet it works well. Link to comment Share on other sites More sharing options...
tomo Posted 18November, 2016 Report Share Posted 18November, 2016 They (Espar) make electrical units also Link to comment Share on other sites More sharing options...
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