Scott Posted April 19, 2014 Share Posted April 19, 2014 Even when running ? Not really, it should pressurise just the same as it's heat that causes the system to pressurise. It will overheat badly though, the radiator would stay cold while the engine would be red hot. Quote Link to comment Share on other sites More sharing options...
Guest Roger NE Posted April 19, 2014 Share Posted April 19, 2014 the radiator would stay cold while the engine would be red hot Actually that's not strictly true . . . even with no Water Pump at all, you still get coolant circulating, due to convection. The hot fluid is drawn towards the cooler fluid in the radiator. ( I had that on one engine, where there were no blades left on the water pump at all!) But Scott is right (and as I said back in Post 11) - regardless of what is causing your high pressure, if the Radiator Cap was working properly it would be opening and relieving the pressure ! Quote Link to comment Share on other sites More sharing options...
DodgyRog Posted April 20, 2014 Author Share Posted April 20, 2014 (edited) Just a quick update, without a definite answer at this point After stripping half the Engine Bay out and then installing my Stock Radiator and replacing the destroyed WaterPump to Turbo Hose with some spare fuel hose I had I then only had time to refill and bleed the system, I got the system upto temp with the cap off and then allowed it to cool and draw fluid from the expansion tank Unfortunately due to it getting late I only managed a short 2nd test to get it upto temp, but not revving the engine much as I didn't want to annoy the neighbours The pressure built to what I would expect and coolant flowed into the expansion system, so I now know that that part is working with the stock system Plan was to carry on with a high rev test on the drive today, but it is pouring with rain, so no go today which is annoying Weather forecast is rain all day today, but better tomorrow, so hoping to get the chance to do a proper test tomorrow and then get it booked for a sniff test Saturday I am going to do a sniff test whatever happens, just for peace of mind Edited April 20, 2014 by DodgyRog (see edit history) Quote Link to comment Share on other sites More sharing options...
DodgyRog Posted April 20, 2014 Author Share Posted April 20, 2014 Pic of the Pipe from Water pump to Turbo From the size of the hole, it looks like it exploded rather than just started leaking to me, it went off with one hell of a bang Quote Link to comment Share on other sites More sharing options...
buster Posted April 20, 2014 Share Posted April 20, 2014 Hope you get this sorted soon bud as little problems like this are very disheartening Quote Link to comment Share on other sites More sharing options...
Scott Posted April 20, 2014 Share Posted April 20, 2014 If it's going in and out of the expansion tank then you are good to go bud. Glad you've got a light at the end of the tunnel Quote Link to comment Share on other sites More sharing options...
DodgyRog Posted April 20, 2014 Author Share Posted April 20, 2014 Hope you get this sorted soon bud as little problems like this are very disheartening Mate it is so frustrating, from memory I first smelt the coolant before Xmas, but couldn't find the leak, it's been going on so long I can't remember driving the car without checking the coolant level lol Quote Link to comment Share on other sites More sharing options...
DodgyRog Posted April 20, 2014 Author Share Posted April 20, 2014 (edited) If it's going in and out of the expansion tank then you are good to go bud. Glad you've got a light at the end of the tunnel Hoping this will be the start of the end of it, but now need to give it a proper test and check that I don't have a HG problem, so the plan is to get the car hot tomorrow and rev the hell out of it on the drive, then take it for a good run Then just to be 100% sure, it will be booked in for a sniff test Saturday, at only £20 it will be well worth it to know one way or the other and give me a bit of reassurance before Dragonball Edited April 20, 2014 by DodgyRog (see edit history) Quote Link to comment Share on other sites More sharing options...
wile e coyote Posted April 20, 2014 Share Posted April 20, 2014 Mate if it's raining sit in the car and rev it Not like you can do anything else apart from sit indoors and ponder over it Quote Link to comment Share on other sites More sharing options...
DodgyRog Posted April 20, 2014 Author Share Posted April 20, 2014 Mate if it's raining sit in the car and rev it Not like you can do anything else apart from sit indoors and ponder over it I know that sounds like it makes sense, but I want to be able keep an eye on the pressure build up and checking for the fluid coming through to the overflow Also need to watch for any leaks, almost every hose has been off at some point in the last few weeks Quote Link to comment Share on other sites More sharing options...
listy Posted April 20, 2014 Share Posted April 20, 2014 Get a tarp up then Rog. Stop being a pansy Quote Link to comment Share on other sites More sharing options...
Scott Posted April 20, 2014 Share Posted April 20, 2014 Quote Link to comment Share on other sites More sharing options...
Guest Roger NE Posted April 20, 2014 Share Posted April 20, 2014 (edited) If you had owned a Mk3 Supra you would know how important it is to replace ALL your hoses every 7/8 years . . . because one little bit of overheating and the 7M engine kisses goodbye to the Head Gasket . . . get a bit of coolant in the sump and you can kiss goodbye to the big ends too! The trouble is that many people have left hoses on their engine that are nearly 20 years old ! The 2JZ may be a lot more forgiving, but it's still sensible to carry out preventative maintenance. Edited April 20, 2014 by Roger NE (see edit history) Quote Link to comment Share on other sites More sharing options...
DodgyRog Posted April 20, 2014 Author Share Posted April 20, 2014 There is no way I am laying under the Supra when the ground has running water going across my drive:badmood: It can wait until tomorrow, plus we have had Jen's Dad and Brother here Quote Link to comment Share on other sites More sharing options...
DodgyRog Posted April 20, 2014 Author Share Posted April 20, 2014 Still wet and raining, guess I need to forget it for today and get out early in the morning, sorry neighbours Quote Link to comment Share on other sites More sharing options...
supra matt Posted June 17, 2014 Share Posted June 17, 2014 Hi mate did you get to the bottom of this in the end? Quote Link to comment Share on other sites More sharing options...
DodgyRog Posted June 17, 2014 Author Share Posted June 17, 2014 Hi Matt, think it was a faulty Rad, I had my old N/A Rad sat here, so put it and it was fine Lee sent me another Rad down and it has been okay since (touch Wood) Lee was going to send the bad Rad off for testing, but have not heard back from him on the result Quote Link to comment Share on other sites More sharing options...
supra matt Posted June 17, 2014 Share Posted June 17, 2014 :DHi Matt, think it was a faulty Rad, I had my old N/A Rad sat here, so put it and it was fine Lee sent me another Rad down and it has been okay since (touch Wood) Lee was going to send the bad Rad off for testing, but have not heard back from him on the result are thats cool mate pleased you got it sorted. Quote Link to comment Share on other sites More sharing options...
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