thermostat question
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i have already done the head gaskets and a new header tank has split again, compression test shows ok also, so im a bit stuck, thats why i thought it may be the thermostat, thanks phil.
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i really havent got a clue now, i cant even check if i think i have solved it, because i need another header tank, i think ill get an alloy one like yours, saves splitting them again and again, what are you going to look at next.
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best way, if you have it, im a bit tight though, if you get it sorted before i do, you will have to let me know what yours was so i can try that, all the best, phil.
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A blocked thermostat would certainly pressurize the system, but it would also cause overheating, and your temperature gauge would be off the scale. If you have ruled out the head gaskets for certain, you could have a cracked head or liner. Either would normally be indicative by water mixing with the oil in the sump, but not always. It could be cracked in a place where the coolant is pressurized by compression into the exhaust system, this would show up as heavy vapour/steam from the exhaust.
Either way, a dye test would show if there is an internal crack somewhere. It is simply a dye that is added to the cooling system, with the engine running, the dye will change colour if there is a crack.
Either way, a dye test would show if there is an internal crack somewhere. It is simply a dye that is added to the cooling system, with the engine running, the dye will change colour if there is a crack.
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i see, i might just take it out again and check it everywhere, it will only take me an hour and half to whip out, as i have got it down to a tee now, dam thing.
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only when at high speed (on boost 80-90 plus)run for around 6-8 mile .......it will lose about 1-1 1/2 Litre of coolants, i manage to drive it for 100mile before the temp when to 100c!!
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