Panic.... overheating 3000M Turbo & Rockingham just round th
Discussion
My Turbo has just developed a horrible fault,it's starting to overheat and with the Rockingham bash not far off this was the last thing I needed.
At 3200 rpm the engine sounds sweet, 75psi oil pressure, 12+ volts, nearly 1psi on the boost gauge, temp reads 115 deg. Got caught in a traffic jam at junction 32 on the M6 yesterday and it cooled down a bit once on the move. By the time I got to Cairn Lodge services on the M74 the temp gauge was back up to 115 degrees again.
Going to try and see if I can get a new thermostat, water tower and expansion tank caps and get those fitted today. If this doesn't work then could it possibly be the waterpump. The belt is fine,bout 1/2 inch of play so it's not slopping about. Any other causes that people have come across?? blocked waterways etc. Don't think the rad is damaged as no pools of coolant under the rad when stopped though water has escaped from the expansion tank which I can see.
Any info on cures or fixes would be gratefully appreciated.
Ron McC BOF 246T
At 3200 rpm the engine sounds sweet, 75psi oil pressure, 12+ volts, nearly 1psi on the boost gauge, temp reads 115 deg. Got caught in a traffic jam at junction 32 on the M6 yesterday and it cooled down a bit once on the move. By the time I got to Cairn Lodge services on the M74 the temp gauge was back up to 115 degrees again.
Going to try and see if I can get a new thermostat, water tower and expansion tank caps and get those fitted today. If this doesn't work then could it possibly be the waterpump. The belt is fine,bout 1/2 inch of play so it's not slopping about. Any other causes that people have come across?? blocked waterways etc. Don't think the rad is damaged as no pools of coolant under the rad when stopped though water has escaped from the expansion tank which I can see.
Any info on cures or fixes would be gratefully appreciated.
Ron McC BOF 246T
Hi, Thanks for all the info. Managed to get a new thermostat and expansion tank cap yesterday so have done the following:-
Old 88 degrees thermostat out
New 82 degree thermostat in
New tank cap fitted
Found one of the small hoses at the water tower was bubbling when the engine was running at idle,but don't think that was the main cause of the problem though I can't be sure until I go for a bit of a drive or take it into town.
I also changed some of the breather pipes and have noticed that the engine now idles at about 900RPM whereas before it was idling at just over 1100RPM, I still think this is too high as according to the owners manual it should idle about 750RPM.
At the end of Sept the car is going up on axle stands and I'll get the wheels polished, brake drums and calipers cleaned and painted and the usual stuff done to it over the winter. Might just have to take it to Adrian next year and get it tweaked.
Will take it for a good run next w/end and see how it holds up. Still confident of making it to Rockingham though.
Ron McC
Old 88 degrees thermostat out
New 82 degree thermostat in
New tank cap fitted
Found one of the small hoses at the water tower was bubbling when the engine was running at idle,but don't think that was the main cause of the problem though I can't be sure until I go for a bit of a drive or take it into town.
I also changed some of the breather pipes and have noticed that the engine now idles at about 900RPM whereas before it was idling at just over 1100RPM, I still think this is too high as according to the owners manual it should idle about 750RPM.
At the end of Sept the car is going up on axle stands and I'll get the wheels polished, brake drums and calipers cleaned and painted and the usual stuff done to it over the winter. Might just have to take it to Adrian next year and get it tweaked.
Will take it for a good run next w/end and see how it holds up. Still confident of making it to Rockingham though.
Ron McC
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