easternjets said:
Sounds like you'll have a well sorted car by the time your done.
When you mentioned pipes looking 'greenish' didn't you mean 'pinkish' as you should have it filled with the pink/red coolant.
Have you def diagnosed the pressure leak as a duff turbo? There are lots of other places you can loose pressure, also if one of your actuators is not functioning correctly you can have the same issue. I had an issue with an actuator and a pipe blowing off from the turbo unit. If an actuator fails you tend to loose pressure back through the dormant turbo, you'll get barely .2 bar on the gauge and the car juts doesn't pull like it should.
Sorry, was late. By green I meant externally on one of the pipe joints (eg an old leak possibly), the coolant in the system is pink . On inspection the pipe joints were not in great condition. The coolant system has also now been vacuum tested and is totally airtight. There wasn't a leak on the front coolant pipes before, but I had them all replaced because the garage has done lots of these on 911's and it seemed like a better thing to do now than wait for problems down the line.
Its definately a duff turbo unfortunately. Now the exhaust is airtight it found the next weak link and you can see soot stains on the joint from exhaust housing and if you hold some paper next to the leak, it flaps from the leakage!! The other turbo has a micro soot stain but no leakage, but I dont think its far behind condition wise.
Thanks regards the actuator, thats interesting. When I get the turbos off I will be sending them to the specialists to investigate and they will assess them both and rebuild including new actuators I think. Apparently these turbos (on 997t's) are starting to corrode from general uk exposure and the metal thins until it gets to the point where exhaust gas pushes out. It is not necessarily a visual inpsection that confirms it they said.
The repair kit they are doing is to strip turbos, machine the problem face out, weld a stainless steel pre machined plate in, and refurb the turbo to new.
They can only do this though if the turbo is not too far gone... so if the metal is too thin, its new turbo time. Currently about £3500 each off Porsche or the best price I have found of £2050 plus vat each from an independant supplier but for the same oem units. (unless anyone knows of better!)
I was tempted to get some hybrids and fit some new intercoolers and get a remap (and whatever else is needed), but common sense is telling me to stay stock OEM!