Exhaust manifold stripped stud leak, remedy anyone?
11-04-2006, 01:37 AM
#1
Drifting
Thread Starter
Exhaust manifold stripped stud leak, remedy anyone?
Today we were idling the car and my tech put on his doctor's listening device and heard a leak coming from the exhaust manifold between two studs on different headers facing each other that are apparently stripped, since they are longer than the rest and keep turning upon tightening the nut. What is the best and quickest way to remedy this kind of leak without having to remove the head??
Last edited by LFA951; 11-04-2006 at 01:57 AM.
11-04-2006, 03:58 AM
#2
I had this same problem on my car. I had SFR fix it when I had their stage 1 headers installed. Basically all they did was enlarge the hole for a size larger stud, then lathe half of the stud down to Porsche specs. It's help up very well on my car and I have no leaks.
-Darwin
-Darwin
11-04-2006, 12:11 PM
#5
Kudos to SFR, that seems like a very clever solution to a big pain in the *** of a problem. I'd think the headers have got to come off, not the head though. I could be wrong.
11-04-2006, 02:40 PM
#6
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Give up now and accept your fate – you need to pull the head to fix it right. It’s so tight there that anything else risks getting the stud installed crooked or other damage.
So now you can replace the head gasket and fix any other leaks. See, it’s a positive thing…
So now you can replace the head gasket and fix any other leaks. See, it’s a positive thing…
11-04-2006, 03:29 PM
#7
Rennlist Member
I agree with chris. I have done this with the head in the car using an angular drill and tapping it but that was decades ago when I was afraid to remove a head. If I had to do this now, I wouldn't even think twice but remove the head.
Raj
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11-04-2006, 04:37 PM
#8
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Well, i'd try a helicoil before going to a bigger stud.
As a temp fix, you might get lucky and find enough good threads deeper in the hole. If so, get a long bolt (M8 1.25 I think) and cut it to length as a longer stud.
As a temp fix, you might get lucky and find enough good threads deeper in the hole. If so, get a long bolt (M8 1.25 I think) and cut it to length as a longer stud.
11-04-2006, 08:17 PM
#9
Drifting
Thread Starter
What the heck is a helicoil?? Yea any shop would want me to take the head off, it's 10 hours labor, I want to try something without taking the head off, cause we just put it on, so I'd hate to back to the drawing board...
11-05-2006, 07:56 AM
#10
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helicoils are amazing!!!! i fixed 4 threads on my old saab carlsson head and it was like new again. I could do this without removing the head due to it's layout not sure if you'd be able though
11-05-2006, 09:58 AM
#12
Lazer Beam Shooter
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Originally Posted by Chris White
Give up now and accept your fate – you need to pull the head to fix it right. It’s so tight there that anything else risks getting the stud installed crooked or other damage.
So now you can replace the head gasket and fix any other leaks. See, it’s a positive thing…
So now you can replace the head gasket and fix any other leaks. See, it’s a positive thing…
Best answer.
