Scott Posted February 21, 2012 Share Posted February 21, 2012 As above, I got some -12an hose to supply and return the coolant from the matrix. I got 2 lengths and cut 1 to see what it looked like. By chance the cutoff part that was left fitted in the opposite way from stock (meaning a reverse flow through the matrix) so I was just wondering if I would get away with it as is or if it needs to be as per stock for any particular reason? I don't want to waste a perfectly good bit of -12 for nothing Quote Link to comment Share on other sites More sharing options...
hodge Posted February 21, 2012 Share Posted February 21, 2012 I would have thought it doesn't matter as long as it has an in and out it will be fine. Quote Link to comment Share on other sites More sharing options...
Scott Posted February 21, 2012 Author Share Posted February 21, 2012 I would have thought it doesn't matter as long as it has an in and out it will be fine. The only thing I was worrying about would be how the bypass thing worked. I've never seen a matrix up close so not really sure on how it bypasses the hot water for cold air. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted February 21, 2012 Share Posted February 21, 2012 @edit@ Quote Link to comment Share on other sites More sharing options...
Scott Posted February 21, 2012 Author Share Posted February 21, 2012 Surely it will matter for the flow through the rad? Not really sure what you mean? How would the direction of flow through the matrix effect the radiator? Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted February 21, 2012 Share Posted February 21, 2012 Got in before the edit lol. I didn't read it properly. Quote Link to comment Share on other sites More sharing options...
Scott Posted February 21, 2012 Author Share Posted February 21, 2012 Got in before the edit lol. I didn't read it properly. Quote Link to comment Share on other sites More sharing options...
Jos Posted February 21, 2012 Share Posted February 21, 2012 According to this thread it does matter? http://www.mkivsupra.net/vbb/showthread.php?259121-Possible-to-have-heater-matrix-hoses-the-wrong-way-round Quote Link to comment Share on other sites More sharing options...
Scott Posted February 21, 2012 Author Share Posted February 21, 2012 According to this thread it does matter? http://www.mkivsupra.net/vbb/showthread.php?259121-Possible-to-have-heater-matrix-hoses-the-wrong-way-round If I can get them round the right way I will, but reading that it might be a coincidence. I'm happy that it won't do any damage though so if I can't get it to fit I'll give it a go and report back if I get the same luke warm symptoms. Nice find Jos, thanks Quote Link to comment Share on other sites More sharing options...
Dnk Posted February 22, 2012 Share Posted February 22, 2012 (edited) I posted about this a while ago. And just spotted the link Edited February 22, 2012 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
stevie_b Posted February 22, 2012 Share Posted February 22, 2012 Just speculation, but it's possible that connecting the hoses the "wrong" way round would inhibit the flow of coolant via convection. I'm not sure where the coolant pathways lead, and specifically the relation between the coolant pump (which will drive the coolant much more strongly than convection flow) and where the pathways that feed the matrix come from. Like in the thread Jos linked to, this *could* cause the matrix to only chuck out warm air rather than hot. Quote Link to comment Share on other sites More sharing options...
Digsy Posted February 22, 2012 Share Posted February 22, 2012 I believe the schematic shows a coolant control valve in the matrix circuit. Again, speculation, but maybe this is designed to operate with coolant flowing in a particular direction? I.e. maybe it self-closes if you try to flow through it in reverse? Quote Link to comment Share on other sites More sharing options...
Scott Posted February 22, 2012 Author Share Posted February 22, 2012 Just speculation, but it's possible that connecting the hoses the "wrong" way round would inhibit the flow of coolant via convection. I'm not sure where the coolant pathways lead, and specifically the relation between the coolant pump (which will drive the coolant much more strongly than convection flow) and where the pathways that feed the matrix come from. Like in the thread Jos linked to, this *could* cause the matrix to only chuck out warm air rather than hot. I'm exactly the same. I was more worried about breaking something or blocking something though. Knowing that it won't break I'm happy to give it a go to see (if need be of course). I believe the schematic shows a coolant control valve in the matrix circuit. Again, speculation, but maybe this is designed to operate with coolant flowing in a particular direction? I.e. maybe it self-closes if you try to flow through it in reverse? Yeah that was what I was wondering. Thinking about it again I had better be careful actually. I've done away with all the other coolant pipes around the engine bay so the only circuit I have left is the waterpump - matrix - head. Think I'll just make sure it's right regardless Thanks folks. Quote Link to comment Share on other sites More sharing options...
Scott Posted February 22, 2012 Author Share Posted February 22, 2012 Is the cooling system averse to blood, sweat and tears at all? If not, I got them on the right way. If so, I'll be flushing it sooner rather than later lol. Quote Link to comment Share on other sites More sharing options...
mixad Posted February 24, 2012 Share Posted February 24, 2012 Heres a "flow chart" : Quote Link to comment Share on other sites More sharing options...
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