I am so mad right now, and I need some help. I have had my rb25 s13 for 2 years now, and a few months back it started making a screaming sound. that is the only way I can describe it. full or close to full throttle it starts to "scream". it builds and holds boost fine, but the turbo makes a bad noise. and it does not do this in neutral while reving the car. only under load. I am in Flight school for the ARMY and have had NO time to mess with it, until now. So I buy a used rb25 turbo and it sits while I wait for a break in school, and this week I finally have off and decide to put it on.
Let me backtrack. the reason I think it is the turbo is because the inside of my hotside intake is coated in a nice black sludgy oil. I use Mobile 1 and change it ALL the time. my oil practically looks fresh when I drain it. So I figure it must be coking and leaking and making noise, it's gotta be bad! well, I am not so sure anymore.
Today I took off the "bad" turbo and got some surprises. very little shaft play if any. and there doesnt seem to be any interference with the housing. But...
There were 4 broken studs on the exhaust manifold. All on the top, they were the two top toward the front and the two top towards the back. I have never checked for these, and just noticed them now. all the bottoms are on and the two on top are closest to the turbo; the two middle studs on top. could this be an exhaust leak? and if so, how the hell do you get those studs out? Pull the head? this is like a kick in the di#k. thats what I get for being a penny pincher.
Guys, if you can help me figure this out, I'd be very grateful.
Brendan
Bad turbo? or exhaust leak...
Re: (Carl H)
any suggestions on how to get the studs out? do ya gotta pull the head? or drill it out?
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elvis240sx
- Posts: 487
- Joined: Sun Sep 08, 2002 11:19 am
Re: (bmadd2402)
you may be able to drill a hole in the center of the broken stud and turn it out with on extractor. but most likely you will need to drill it out and put a helicoil in.