Stagea S2 Turbo

[BigDirtyJase]

Hey guys,

Ever since i brought my car. I have been wondering about my turbo when its spooling up. I makes like a squealing like noise. Now i don't have anyone I know with a S2 Stagea...I was just wondering if this is normal is it a sign that something is wrong with the turbo. Mind you the car is running well and there is no smoke or no loss in power IMO

My best friend (also my mechanic/tuner) thinks that the turbo is noisy but he hasn't work on a Stagea before let alone a Neo motor

Any ideas

[chook]

shouldnt be noisy, just a slight whistle especially from aftermarket pipes.

Could have a chipped blade, or an air leak, easy enough for a mechanic to check.

[chook]

good info here

http://www.skylinesaustralia.com/forums/Tu...amp;pid=3581542

[Brycey]

hard to say.. have you done any modifications at all? when i did a silicone inlet pipe, filter and FMIC the turbo was noticeably louder and had/has a squeal (but not a bad squeal, just a noisy spool) when on boost.

[BigDirtyJase]

hard to say.. have you done any modifications at all? when i did a silicone inlet pipe, filter and FMIC the turbo was noticeably louder and had/has a squeal (but not a bad squeal, just a noisy spool) when on boost.

Nothing, it is stock as a rock...I've had this sound since i brought the car

[alu-siv_stagea]

i had the sound too, turned out to be a cracked turbo gasket.

[coparts41]

i had the sound too, turned out to be a cracked turbo gasket.

Did a job for a guy a little while ago , Nissan wanted $1200 + of which naturally he could not afford.

Turned out the turbo was loose , fitted a new gasket A OK! Check your oil feed line too! may be blocked or restricted

[DaveB]

Did a job for a guy a little while ago , Nissan wanted $1200 + of which naturally he could not afford.

Turned out the turbo was loose , fitted a new gasket A OK! Check your oil feed line too! may be blocked or restricted

Hmmm, I have just driven my car for the first time today (RS-Four S2) and I have the exact same problem - 'zing' kind-of sound when rev's get above about 2,000, pretty loud people on the side of the road look at you funny. Since I'm hoping like heck it's not a shot turbo, does anyone know where I can get a new turbo gasket and/or how much I should be paying?

[pixel8r]

This is fairly common with stageas I think (on freshly imported stageas). Usually cracked turbo gasket - basically the sound you hear is air leaking out under pressure - bit like the sound of wind when you leave one of the windows a tiny bit open in your house.

Hope you get it sorted. Shouldn't happen after you get it fixed.

Edited March 1, 2008 by pixel8r

[DaveB]

This is fairly common with stageas I think (on freshly imported stageas). Usually cracked turbo gasket - basically the sound you hear is air leaking out under pressure - bit like the sound of wind when you leave one of the windows a tiny bit open in your house.

Hope you get it sorted. Shouldn't happen after you get it fixed.

Thanks Steve; I think I'll try replacing the gasket, just as soon as I get a new one.

[~R33AzzA~]

My brothers s2 stagea does the same thing. I will get a new gasket and see if it fixes the problem.

[hectic180]

My s2 stagea makes the same noise. Which gasket should i be looking at ??

[DaveB]

My s2 stagea makes the same noise. Which gasket should i be looking at ??

I would like to know this too

First gasket I suspect is the compressor outlet gasket (on the inlet side), my theory being that since this is where the pressure's building, a leak right here would be noisiest since it's so close to the blades of the turbine; I am hoping it's not on the exhaust side because that looks like a lot more work!

Here is the gasket I am thinking of replacing:

The gasket is metal, thin and triangular. Can I re-use it with some spray-on gasketing compound or do I need to replace it since I took it off? (I marked the orientation).

BTW, what should the end-play be in the compressor wheel? I can slide it back & forth a little with thumb & forefinger and can hear it moving a little, but can't really see it move... seems a little more than it should be (I thought it should be zero!) but I don't know.

Edited March 2, 2008 by DaveB

[DaveB]

some more info for what it's worth... the first time I drove the stagea home it went through almost a quarter of a tank of 98RON in about 50kms (and no I wasn't booting all the way! was driving like a granny - Adelaide traffic and all)

Edited March 3, 2008 by DaveB

[DaveB]

Finally got my gasket out, and I might have found the source of at least my 'turbo zing' and maybe it could be yours too Jason? Mine is completely stock and less than a week out of compliance... but anyway here's what I found when I removed my turbo exhaust housing to manifold gasket:

I have higlighted, fairly obviously, where I found a crack...

close-ups:

front:

back:

Doesn't look real serious I guess, however the gasket is a two-piece folded construction, and in the upper-left corner (more visible on the large version showing the whole gasket), the outside edge is corroded/blasted away, leaving a clear path through to the inside where the crack is, and my guess is that it would also operate a little like a reed, flapping about at a high pitch.

But this is the first turbo I've worked on, so I could be completely wrong... when you guys said you'd found cracked gaskets I had visions of a thick fibreglass thing falling in half when I removed it...

But hope this helps someone to decide about their high-pitch zing problem. The above gasket is a pretty cheap and easy fix; I was quoted $37.60 from two Nissan places I rang. Beware though, lots of pipes to remove... mark everything carefully etc. etc.

Edited March 4, 2008 by DaveB

[DaveB]

Well replaced gasket and I have to say, loud nasty 'zzzzzIIIInnng' is gone... doesn't sound like compressed air being blasted into a CPU fan anymore. Still has a noisy spool though; maybe turbo is worn? Will see how it goes I guess; not about to pull it off again and get it rebuilt only to find out it's just noisy, or an air leak somewhere else... hopefully not a hole in the intercooler?

[RubyRS4]

Well replaced gasket and I have to say, loud nasty 'zzzzzIIIInnng' is gone... doesn't sound like compressed air being blasted into a CPU fan anymore. Still has a noisy spool though; maybe turbo is worn? Will see how it goes I guess; not about to pull it off again and get it rebuilt only to find out it's just noisy, or an air leak somewhere else... hopefully not a hole in the intercooler?

Dave, if your turbo is not in good condition, I'll be removing my turbo in the next few weeks.

I've got a T3/T4 going on with front mount intercooler kit, so I may have a 35,000kms old turbo available.

We can come to some agreement on it.

Ruby

[DaveB]

Dave, if your turbo is not in good condition, I'll be removing my turbo in the next few weeks.

I've got a T3/T4 going on with front mount intercooler kit, so I may have a 35,000kms old turbo available.

We can come to some agreement on it.

Ruby

Thanks Ruby, give me a few weeks to drive around with it and see how it is. Just for reference, what can you hear from your turbo when it's boosting (above about 3,000 revs)?

[RubyRS4]

Thanks Ruby, give me a few weeks to drive around with it and see how it is. Just for reference, what can you hear from your turbo when it's boosting (above about 3,000 revs)?

I hear nothing but the engine revving out and normal turbo spooling noise. But then again, my hearing sucks, so I may be missing some high pitched noises :laughing-smiley-014:

[DaveB]

I hear nothing but the engine revving out and normal turbo spooling noise. But then again, my hearing sucks, so I may be missing some high pitched noises :laughing-smiley-014:

lol! I wonder what is 'normal spooling noise'? Can anybody with a S2 that is 'normal' be bothered to record the turbo sound on boost? That might give those of us who suspect something is wrong a better idea... just a thought... objviously if you have an exhaust which covers it up that might be hard