R32 Skyline vacumm hose replacement.
I've been having some really annoying phantom boost issues lately with Zoe, (that's her name, and well if you don't name your car then your just some schmuck.) She'll boost up fine but then someimes it'll all go awry and the needle will bounce all over the gauge, so the first thing that comes to mind is a vacuum leak! But where is the leak comming from? So many hoses and clamps to check! I had a look on the skyline forums and most people said to run the car and spray water on the hoses to find a hissing noise or see bubbles.... honestly i couldn't be bothered doing that sort of shit, the hoses on the intercooler look hunky-dory so i'm just gona jump straight in and replace the hoses from the actuator & turbo to the boost controller. A meter of 6mm fuel hose is only $7.95 so you know, it's not expensive.
Comming from an old school V8 background i don't really know shit about turbo's. I'm much more comfortable with a holley to play with, the difference between a 351 clevo and an RB20 are pretty damn huge! The first time i popped the bonnet i was like 'whats all this stuff and whats it do (^_^?) But now that i've had her for 5 years i'm alot more comfortable with her workings, but i still miss all the space in the engine bay the old cars have!
There's not alot of room to replace the hoses, so i decided just to take the actuator out and go from there, there's two bolts to undo and the U clip thingy on the rod at the back, just be careful not to lose it because it's pretty small! I put a rag on top of it so it wouldn't fall anywhere. The rod thing (yes notice how i dont know what these things are called) has a spring or something on it, and removing it will decompress it, which unfortunately makes it abit harder to put back on, but not impossible! There wasn' t enough room for me to get my ratchet down there so i had to use a spanner and it felt like it took for ever!
Once it's off and out of the way it's much easier to get to the hoses on the turbo (^_^!) So just measure out how much hose you need and off you go! while the actuator's out you can replace the hose attached to it too. My hose turned out to be 3 drifferent hoses clamped together?!? I had the turbo rebuilt and highflowed at the begining of the year so i was suprised that they left this piece of shit hose on there!
It gets pretty hot down there so to protect the hose i put a bigger piece of hose around it, then after that it was just a matter of putting it all back together. And that as they say, is that. It took me about 90mins to complete... And now i get no annoying boost issues \(^_^!)/ well i hope this helps if you too need to solve your phantom boost issues!
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