Problems getting the exhaust manifold off?
#1
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Problems getting the exhaust manifold off?
I have a '95 and im getting ready to install the BEGi S1. As far as i know, the exhaust manifold has never been off the car. How much do i have to worry about breaking the studs? Also, would torching them to make the nuts easier to get off make the studs or the nuts weaker?
Thanks in advance
-Wes
Thanks in advance
-Wes
#4
yea use kroil. I also hear that brake fluid works surprisingly well for a penetrating oil, so might give that a shot too. To aid in loosening exhaust bolts, I've read it's best to run the motor a couple minutes, then shut it off, then brake them loose. If they are stuborn I would try that too. FWIW, the bolts on my 99 came off without too much trouble, and I put antiseize on them when reinstalling.
#7
yea use kroil. I also hear that brake fluid works surprisingly well for a penetrating oil, so might give that a shot too. To aid in loosening exhaust bolts, I've read it's best to run the motor a couple minutes, then shut it off, then brake them loose. If they are stuborn I would try that too. FWIW, the bolts on my 99 came off without too much trouble, and I put antiseize on them when reinstalling.
#8
i used pb blaster that i sprayed on the night before the install... i also got a metal bristled brush and scrubbed the threads to take any type of unwanteds out... in the morning i sprayed them down again and pulled out my breaker bar.... i almost fell on the car because they let go quicker than i thought.
#9
^That's the trick right there. You'd be surprised the crap that will accumulate on the threads... as you back the nut off the stud, that crap just grinds itself in and jams the nut... then you might just back the stud out... or break it off.
USE A WIRE BRUSH ON THE THREADS.
THEN USE PBBlaster or Liquid Wrench... I like the foaming kind.
I've never heard of Kroil, but I assume it's the same stuff.
Before you put the manifold back on, re-torque the studs into the block... I added an extra 10ftlbs for good measure.
USE A WIRE BRUSH ON THE THREADS.
THEN USE PBBlaster or Liquid Wrench... I like the foaming kind.
I've never heard of Kroil, but I assume it's the same stuff.
Before you put the manifold back on, re-torque the studs into the block... I added an extra 10ftlbs for good measure.
#11
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I didn't do ANYTHING to get all exhaust manifold nuts off my 1995 except put a socket on them and pull. Soak them in some Kroil or PB Blaster, and you'll be set. I'd REALLY soak the manifold to intermediate "down" pipe though. Those are really tough and I broke two of the three getting them off. You're not gonna reuse them, so don't be worried about breaking. I almost just sawed them off, but went ahead and just used the socket.
Good luck mang!!
Good luck mang!!
#13
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Yes the downpipe/headers to the cat connection is absolutely horrible. Soak that ************ flange for a long time and then bash the **** out of it, preferably with a sledgehammer. I ended up sawzalling mine off since I replaced my whole exhaust... Doing that under jackstands wasn't that fun :(
#16
FWIW, I just pulled my 99's mani off after 134k miles on it... no issues at all. Used PB Blaster an hour before taking the nuts off. Oh, and on the Cali mani, there is a nut that hides in the middle... so be sure you're taking off all 9 of them!
Cheers,
Prospero
Cheers,
Prospero
I have a '95 and im getting ready to install the BEGi S1. As far as i know, the exhaust manifold has never been off the car. How much do i have to worry about breaking the studs? Also, would torching them to make the nuts easier to get off make the studs or the nuts weaker?
Thanks in advance
-Wes
Thanks in advance
-Wes
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