Blown Turbo?

[Rbvl]

Hi guys I have a t28 high flowed turbo from an s15 on my rb25 I only just bought the car about a month ago it was going fine holding boost at 15 psi until the other day when I booted it in 2nd gear and there was a Big Bang and I blew off a cooler pipe so I put it down to that limped the car home and fixed up the cooler pipe then wen I took it out next the turbo won't make any boost runs fine in vaccume but then wen u boot it the gauge holds at 0psi I first thought I might have a boost leak but now I'm thinking its probably the turbo can anyone confirm this? If so what is a good turbo to put on I have a standard ecu 3 inch exhaust and fmic I'm looking for about the same power maybe a little bit more

[GTSBoy]

It would be unusual to blow up a steel wheeled turbo under those circumstances. Have you had the turbo inlet off it yet and seen whether the turbo shaft spins and how it feels?

[Rbvl]

Yeah I took it off just befor it's spins freely and smoothly and it has a little bit maybe 2 mm shaft play side to side there was also a bit of oil in the housing in front of the inlet fins

[SargeRX8]

That oil in the front of the housing is normal, its from the oil breather lines. That shaft play is probably not 2mm. I don't think your turbo is a problem, I think you've still got a leak somewhere. If you damaged the wheel or suspected you popped your wheel, you would be here with severe engine problems because that wheel would have been eaten by your engine.

Edited June 10, 2013 by SargeRX8

[iruvyouskyrine]

Might be a stupid question, but does it still feel like it is making boost, or are you just saying it makes none because the gauge says so? If it still feels like its making boost it could be as simple as the boost vacuum line has come off.

[Joshbigt62r]

Sounds like a boost leak to me. Go around and check all your silicone joiners for splits, especially the the elbow that's used off the compressor side outlet.

Cheers josh

[Rbvl]

Well it turned out to be a boost leak in the boost gauge line I don't know how the gauge read vaccum it was a massive crack, I went to the local truck supplies shop and bought some new 8th inch plastic hose for 2 bucks and found another small leak now there both fixed the car boosts properly only now I have another problem now at about 5000rpm in first the engine breaks down and splutters and looses power also if I'm cruising along in 5th then ease power on it begins to splutter. The car has splitfire coil packs there probably old so I'm thinking one might be stuffed I have replaced the plugs and it made no difference so I'm hoping it will just be one coil pack, buy a new one and then work out which one is failing well I'm hoping it will be that easy anyway

[Ben C34]

where do you live? I have some coils you can try if in Adelaide

[Rbvl]

I live on the nsw north coast just abit to far away lol cheers anyway I have a mate who I can borrow some coils off but he just went back to work at the mines and he won't b back for a month which sucks I don't wanna wait so ill prob just buy one and see if I can fix it that way

[GTSBoy]

Cracks in small bore hose can/will suck closed under vacuum but open up with positive pressure inside.