Header bolts that loosen up...

[FloDaLilRed2002]

What have you guys done to remedie this issue? I've had to go in there that tighten up the nuts cause they loosen up and after a while I can hear the exhaust leak out of there. On an old Mustang I once had I used hardend lock washers which worked at the time, but I have yet to find a correct size. Today I just recieved a new set of nuts and will be putting them on later this evening so would like to see what you may have done.

Thanks...Dave.

[adrianskante]

use some locktite worlds like a charm

[adrianskante]

work*

[c.d.iesel]

USE THE PROPER copper self locking exhaust nuts with flat washers

you can get a bag of nutts from any metric supplier

like this from http://www.jbugs.com/store/merchant.mvc?Store_Code=JBUGS&Screen=PROD&Product_Code=4507-BP&utm_medium=shoppingengine&utm_source=bingshopping

[Guest Anonymous]

I 2nd C.D.

[pink]

They're oblong.

11-62-1-711-954

[1453aalapapa]

18 10 7 523 805. 8mm copper coated nut, exhaust. this nut is really trick. it is way heftier than the normal exh nut, plus it has a shoulder on it, so you dont need a washer. but the best thing about this nut is that it has an alloy helicoil. they work really well. on my galant turbo, the 4g63t has a problem with the exh studs breaking. the nut backs off, and the vibration will break the stud. i switched to these nuts, and never had a problem since. they come stock on the m62 v8. the extra cost is worth it