cracked exhaust manifold
we discovered today that we have a cracked exhaust manifold on our cummins 8.3 ISC. local diesel repair shop says this is pretty common in motor homes. anyone concur ? looks to be about $1000....
Forum Discussion
Google this up and see what you think.
http://dodgeram.info/tsb/2001/09-002-01.htm
or go with the "tang" lock washer type
http://www.agkits.com/cummins-6ct-8-3l-exhaust-manifold-bolt-kit.aspx#.V-3SsIWcGP8
Of course you need the right size for your exhaust manifold. I cracked 2 manifolds and was told to put this on my 5.9. What they do is simply keep the exhaust bolts torqued at right psi. Which torque should be to spec and even with each other. Nothing more than alum strip that goes over the bolt to keep in place to whatever you torque them at. IMO...Exhaust warms up and after many miles, works the bolts loose just a little, then manifold cracks because of uneven pressure. Maybe there is another fix because TSB is real old. But the same problem of joining 2 different types of metal together with bolts that gets hot and then cools down.
http://dodgeram.info/tsb/2001/09-002-01.htm
or go with the "tang" lock washer type
http://www.agkits.com/cummins-6ct-8-3l-exhaust-manifold-bolt-kit.aspx#.V-3SsIWcGP8
Of course you need the right size for your exhaust manifold. I cracked 2 manifolds and was told to put this on my 5.9. What they do is simply keep the exhaust bolts torqued at right psi. Which torque should be to spec and even with each other. Nothing more than alum strip that goes over the bolt to keep in place to whatever you torque them at. IMO...Exhaust warms up and after many miles, works the bolts loose just a little, then manifold cracks because of uneven pressure. Maybe there is another fix because TSB is real old. But the same problem of joining 2 different types of metal together with bolts that gets hot and then cools down.
