sealing semi warped exhaust flange? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Bigsyke · 03-09-2009, 08:22 PM

yes, ive used the reverse drill bit, sears bolt extractors (box type)

There is a sliver/half moon of the stud left, about 2mm inside the head....

the stud is in there, there will be no way to get it out. so im on to other options.

garagelu · 03-09-2009, 08:41 PM

IMO there isn't going to be any way to seal it without somehow getting another sutd in there. I was in somewhat the same situation as you. I broke the stud closest to the firewall when I was tightening the nut. I was not about to pull my whole turbo setup and maybe even the head to extract it. I had a 3 layer metal gasket from the 01 sentra 2.0L.

Just a couple weeks ago I started some maintainance on my car and pulled a lot of stuff off including the turbo. Turns out the heat from the exhaust actually weakened the gasket and broke it and definately was leaking. RTV may help but I think there will be some sort of leak still.

During my maintenance I pulled the head and used a left hand drill bit and punch in extractor. It worked beautifully. The most important thing is to use a good penetrating oil and use a hammer to knock loose the stress that is keeping it from breaking loose.

Just curious, is this a sr or ka you are working on?

03-09-2009, 08:22 PM	#1
Bigsyke Zilvia FREAK! Join Date: Jun 2008 Location: NA Age: 40 Posts: 1,342 Trader Rating: (0) Feedback Score: 0 reviews	yes, ive used the reverse drill bit, sears bolt extractors (box type) There is a sliver/half moon of the stud left, about 2mm inside the head.... the stud is in there, there will be no way to get it out. so im on to other options.

03-09-2009, 08:41 PM	#2
garagelu Nissanaholic! Join Date: Aug 2005 Location: Atlanta, GA Age: 40 Posts: 1,856 Trader Rating: (60) Feedback Score: 60 reviews	IMO there isn't going to be any way to seal it without somehow getting another sutd in there. I was in somewhat the same situation as you. I broke the stud closest to the firewall when I was tightening the nut. I was not about to pull my whole turbo setup and maybe even the head to extract it. I had a 3 layer metal gasket from the 01 sentra 2.0L. Just a couple weeks ago I started some maintainance on my car and pulled a lot of stuff off including the turbo. Turns out the heat from the exhaust actually weakened the gasket and broke it and definately was leaking. RTV may help but I think there will be some sort of leak still. During my maintenance I pulled the head and used a left hand drill bit and punch in extractor. It worked beautifully. The most important thing is to use a good penetrating oil and use a hammer to knock loose the stress that is keeping it from breaking loose. Just curious, is this a sr or ka you are working on?