Well, the world has ended, the sh*t has hit the fan and I'm here updating....
Firstly, anyone running a water cooled turbo, get the water connections right. I have been having this gurgling water noise after switching off the engine. I knew what the problem was but have been ignoring it for ever.
Eventually the one silicon hose popped that was feeding the turbo bearing housing water and I was compelled to sort it out.The hose ran over the top of the engine from the thermo housing and fed the intake of the housing. From there the other hose went to the top radiator hose via the filler tank. All hunky dory you would say.
So Plane^driver and myself put the car on the hoist and start sorting this all out, new hoses, run correctly with the banjo fittings correctly orientated on the turbo and its all done and dusted. Works like a charm, no more gurgling or steam build up at all.
What also tells me that it is now working well and siphoning on its own is the fact that my rad fans now come on once or twice after the engine has been switched off. That tells me that the heat soak back from the engine and turbo are causing a siphoning effect which in turn is hot enough to get the cooling fan to switch on.
Great stuff, I'm a happy man. I'm also finding that my temps have come down on the Defi gauge by about 15 deg C !!!!!!!!!!
I`ve always had this doubt that the Defi gauge was over reading , nope, the system was not bleeding itself properly and I am sure I had steam pockets on the head and intake manifold at times.
I have still got ideas on how to sort this all out to be bullet proof, well on my way there.
On another note, the silicon hose we buy locally IS ALL CHINESE CRAP !!!!!! There simply is no quality stuff available anymore. The crap about this is that these rip off`s are charging us quality prices !!
In the old days a 50mm air gap between turbo / manifold and a silicon hose was good . No question about it, my Alfa turbo still runs like this with Samco silicon hoses.
Ah, yes, I also re routed a rubber fuel hose that luckily was being used for water. As I pulled it from under the p/s pump it simply broke clean off ! More chinese shit !
The RB has the oil drain from the lifter valley mod that I did when I got the engine .I used VOLKSPARES silicon hose for this. The air gap is probably a good 80 to 100 mm between the hose and the turbo. The last track day we left the track, I turned onto the highway and a great big oil smoke cloud came out the back of my car. I wondered about this as it has not happened again.
Now I know what it was, the silicon drain hose is so badly burnt that it has carbonized and simply got massive big chunks out of it. Obviously when the head drains oil back to the sump the oil simply spills over and poof ! Smoke clouds that will make an F1 Ferrari proud !
So that's the latest update on my car and I am hoping to do brakes on the rear this holiday period as well as sort out a stripped gearbox mount in the chassis/floor.
![[smilie=200sx_rockon.gif]](./images/smilies/200SX_rockon.gif "200SX_rockon"){kind=small}