how to tell if you have a bad turbo gasket? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

shinobis13hb · 12-23-2010, 02:03 PM

well to make it pretty simple..
when i am in boost i hear a screaming sound coming from my turbo i think..??
im not sure.

my exhaust hangers broke the other day and my exhaust started to scrape the ground i could just imagine how much stress that would cause on all the gaskets.
id like to somehow try to figure out my problem before jumping into the situation. and changing the turbo OR the gasket.
im afraid that it could be my turbo going out but i have seen threads of it just being a bad turbo gasket.

hartig · 12-23-2010, 02:11 PM

when my gasket went bad, it was pretty obvious.. there were chunks of the gasket sticking out of the turbo>downpipe connection

chiboy002 · 12-23-2010, 02:15 PM

you should be able to hear it, or open your hood and rev it while holding your hand near it. Air should blow out

Also, wouldn't psi not hold with a blown gasket?

codyille · 12-23-2010, 02:19 PM

Same thing happened to me, In my case the bolts that mount the exhaust manifold to the turbo had backed out and created an exhaust leak that made a screaming sound.

shinobis13hb · 12-23-2010, 02:52 PM

Quote:

Originally Posted by codyille

Same thing happened to me, In my case the bolts that mount the exhaust manifold to the turbo had backed out and created an exhaust leak that made a screaming sound.

thats what i am thinking. i dont hear a leak though. i will go check right now if i feel air. more feed back would be great. i dont see any metal gasket anywhere.

TheRealSy90 · 12-23-2010, 03:52 PM

You usually won't see the gasket if it blows out. Sounds like the gasket to me, i've blown 3 now and they all do the same thing.

shinobis13hb · 12-23-2010, 06:28 PM

Quote:

Originally Posted by TheRealSy90

You usually won't see the gasket if it blows out. Sounds like the gasket to me, i've blown 3 now and they all do the same thing.

i put my hand next to all the gaskets. the elbow gasket from the compressor is bad. so that would explain the noise correct? that would also create a sort of boost leak right? or turbo lag?.

s14unimog · 12-23-2010, 09:01 PM

^Yup, good luck with it. It won't spool for shit with that leak. that's really the most important one. If you replace it and don't want to use the locking plates, conical top lock nuts work great because they can take the heat without backing off and those plates get a little annoying to get back on/off.

R@ddy · 12-23-2010, 09:20 PM

i put a new 4 bolt gasket and tack welded the nuts on the turbine housing

nismoman · 12-24-2010, 06:58 AM

you can weld it, and that works, and alot of people do that.......I use these cooper lock nuts they work great and you dont have to grind to remove them.
FRSport Turbo Outlet 8mm (1.25pitch) Locking Head Nut

12-23-2010, 02:03 PM	#1
shinobis13hb Zilvia Addict Join Date: Dec 2008 Location: la crescenta Age: 35 Posts: 982 Trader Rating: (12) Feedback Score: 12 reviews	how to tell if you have a bad turbo gasket? well to make it pretty simple.. when i am in boost i hear a screaming sound coming from my turbo i think..?? im not sure. my exhaust hangers broke the other day and my exhaust started to scrape the ground i could just imagine how much stress that would cause on all the gaskets. id like to somehow try to figure out my problem before jumping into the situation. and changing the turbo OR the gasket. im afraid that it could be my turbo going out but i have seen threads of it just being a bad turbo gasket.

12-23-2010, 02:15 PM	#3
chiboy002 Post Whore! Join Date: Mar 2010 Location: ◙ Posts: 4,435 Trader Rating: (21) Feedback Score: 21 reviews	you should be able to hear it, or open your hood and rev it while holding your hand near it. Air should blow out Also, wouldn't psi not hold with a blown gasket? __________________ street dancer. GLEAM

12-23-2010, 09:01 PM	#8
s14unimog Nissanaholic! Join Date: Dec 2003 Location: In a place, near a river, over a lake Age: 38 Posts: 2,415 Trader Rating: (22) Rides Gallery: s14unimog Feedback Score: 22 reviews	^Yup, good luck with it. It won't spool for shit with that leak. that's really the most important one. If you replace it and don't want to use the locking plates, conical top lock nuts work great because they can take the heat without backing off and those plates get a little annoying to get back on/off. __________________ Fuking ginger bread man stole my wallet... SHIFT*lock_slide to side d3m3rs0n: if i have a baby im naming it Brandons Fault Emerson

12-24-2010, 06:58 AM	#10
nismoman Zilvia Junkie Join Date: Jul 2005 Location: Bowie, MD Posts: 412 Trader Rating: (0) Feedback Score: 0 reviews	you can weld it, and that works, and alot of people do that.......I use these cooper lock nuts they work great and you dont have to grind to remove them. FRSport Turbo Outlet 8mm (1.25pitch) Locking Head Nut __________________

12-23-2010, 02:11 PM	#2
hartig Zilvia Member Join Date: Mar 2010 Location: western ma Age: 35 Posts: 270 Trader Rating: (4) Feedback Score: 4 reviews	when my gasket went bad, it was pretty obvious.. there were chunks of the gasket sticking out of the turbo>downpipe connection

12-23-2010, 02:19 PM	#4
codyille Leaky Injector Join Date: Sep 2006 Location: Cedar City, UT Age: 41 Posts: 50 Trader Rating: (1) Feedback Score: 1 reviews	Same thing happened to me, In my case the bolts that mount the exhaust manifold to the turbo had backed out and created an exhaust leak that made a screaming sound.

12-23-2010, 09:20 PM	#9
R@ddy Nissanaholic! Join Date: Jul 2008 Location: SoCal Age: 35 Posts: 1,632 Trader Rating: (32) Feedback Score: 32 reviews	i put a new 4 bolt gasket and tack welded the nuts on the turbine housing