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Fitting New Turbo - Problems

benl1981

By benl1981,
in Engines & Forced Induction

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benl1981 Grand Master

benl1981

Posted
Posted

Hi there,

Just fitting up my new GCG bolt on turbo and I am at the stage of cranking the engine to check there is oil coming out of the drain.

I have filled up with over 4L of oil and disconnected the CAS and have cranked for about 3 lots of 5 seconds each and there is not really much oil coming out of the drain (maybe not any!).

The manifold appears to be wet with either oil or fuel running down probably originating from the turbo.

I have a new gasket and torqued up the nuts turbo to manifold.

The only thing I can think of is that I torqued up the top oil and water lines first before these nuts. I didnt think this would interfere with getting the right torque on the turbo nuts and clamping the gasket.

So I have 2 seperate issues:

1. No oil coming out of the drain

2. Appears to be fluid running down from turbo on the underside of manifold.

Anyone else had these issues?

Thanks

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benl1981 Grand Master

benl1981

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  • Author
Posted (edited)

ive had a closer look it may have been there before from product that the stud remover bloke used.

Main problem - NO oil to turbo

I have taken the oil inlet banjo off and when I crank the engine there is no oil coming out. This is with the CAS disconnected. Maybe there isn't enough pressure built to get oil to the turbo? Anyone triied this?

GCG recomend to check there is oil cooming fro the drain by cranking the engine but not staring it. However the oil inlet to turbo is quite high so some pressure would ben needed to get it up there

Edited by benl1981
BHDave Grand Master

BHDave

Posted
Posted
Also - does anyone see a problem with bolting up the oil and water inlet first then tightening the turbo to manifold nuts?

This will not cause a problem at all.

Give the engine a longer crank. you will not build much pressure doing 5 second bursts, and like you said the oil feed for the turbo is up fairly high. It'll take a good 30 second crank to get the factory low pressure light off.

personally, id unhook the oil return and put in into a bucket and then start the engine, give it 10 seconds and then switch it off. then go check the bucket. You didn't have oil issues before, whats changed now to make you think you have some?

benl1981 Grand Master

benl1981

Posted
  • Author
Posted (edited)

thanks bhdave - So you think my gasket should still have the orect pressure on it? I was going to undo the bangos then tighten the manifold nuts p first but its a bit of a hassle since the tabs have already been knocked back etc.

Will try a longer crank

Thanks- yeah no issues before with oil supply :P

PS - anyone know which fuse does the injetors or fuel pump - so i dont have to be cranking fuel fo that time

Edited by benl1981
Birnie Veteran

Birnie

Posted
Posted

Don't know about injector fuse, but you can unplug the connector at the back/top of the block, which you usually unplug when changing sparkies.

Fuel Pump one is in the boot i think, near the battery? Check the Fuel Pump DIY threads, might be in one of those somewhere.

Abo Bob Grand Master

Abo Bob

Posted
Posted

As long as you are 100% positive the banjo bolts are pointing in the right direction then how can you stuff it up? I just bolted it all back together and started it. I was super careful about the banjo bolts though. I hope you used new copper washers.

benl1981 Grand Master

benl1981

Posted
  • Author
Posted

Been busy on the weekend. Got oil out the drain so all is good. Just got to bolt up exhaust and test.

Then do the injectors and tune :rolleyes:

Wanted to do one step at a time so I can identify cause of problem if any. Very slow process!! mainly all due to turbo issues.

Will test it tonight to see that the turbo runs ok and no surge..better not or ill spew!

benl1981 Grand Master

benl1981

Posted
  • Author
Posted

Turbo is all on. Runs well - no surge.

No leaks or anything - the only thing is as soon as you shut off the car and put your head near the turbo you can hear sort of air or water moving. Can anybody else hear this. I didnt notice with the last turbo but I may not have paid that much attention.

From 4000-7000rpm is really strong. I'm only running about 9psi though. Slightly laggier but not much. Might be good for traction as it doen't seem to snap on boost quite as sharply as stock turbo. Running without a tune so really rich. Maybe with some tuning and more boost it will be good :laugh:

benl1981 Grand Master

benl1981

Posted
  • Author
Posted

hope the clutch holds up :woot:. Yeah Ill do the injectors soon.

Also got the new fuel pump to go in (GTR). Hope it's quieter than the one in there. For some reason my car doesnt seem to have the dual stage - so at idle it isn't any quieter that when the revs go up. All the wiring looks stock though.

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