88whitemanche Posted June 15, 2019 Share Posted June 15, 2019 Just recently replaced my exhaust manifold and my truck as most of our trucks have issues if the bolts backing out what are you guys using or suggest I used so the bolts stay in place thanks in advance Link to comment Share on other sites More sharing options...
Jeep Driver Posted June 15, 2019 Share Posted June 15, 2019 Replace them with studs. Blue Loctite . Link to comment Share on other sites More sharing options...
DirtyComanche Posted June 15, 2019 Share Posted June 15, 2019 Since you already installed it, I'd suggest hitting the bolts with a torque wrench a couple times over the next week or two. Hopefully you did the initial install with a torque wrench and using the correct pattern. They should not come loose. I always put mine in with antiseize on them and they don't come loose. If you're talking about the collector flange nuts, I double nut them. Antiseize also. Link to comment Share on other sites More sharing options...
88whitemanche Posted June 16, 2019 Author Share Posted June 16, 2019 5 hours ago, Jeep Driver said: Replace them with studs. Blue Loctite . Got a link for the studs? Link to comment Share on other sites More sharing options...
88whitemanche Posted June 16, 2019 Author Share Posted June 16, 2019 4 hours ago, DirtyComanche said: Since you already installed it, I'd suggest hitting the bolts with a torque wrench a couple times over the next week or two. Hopefully you did the initial install with a torque wrench and using the correct pattern. They should not come loose. I always put mine in with antiseize on them and they don't come loose. If you're talking about the collector flange nuts, I double nut them. Antiseize also. Nah I mean at the head, but I’ll double check sequence but I’m sure i started at the bottom middle of the headers Link to comment Share on other sites More sharing options...
Jeep Driver Posted June 16, 2019 Share Posted June 16, 2019 35 minutes ago, 88whitemanche said: Got a link for the studs? Just common grade 8 studs.........found at any NAPA. Link to comment Share on other sites More sharing options...
88whitemanche Posted June 16, 2019 Author Share Posted June 16, 2019 ill be doing torque pattern again...but with a bit of thread locker just in case I don’t gotta worry about bolts backing out Link to comment Share on other sites More sharing options...
cruiser54 Posted June 16, 2019 Share Posted June 16, 2019 I think the factory torque spec was too low. Another vote for thread locker here..... What is the torque BTW? Link to comment Share on other sites More sharing options...
fiatslug87 Posted June 16, 2019 Share Posted June 16, 2019 From the '89 FSM #1- 30 ft-lbs #2 to #5- 23 ft-lbs #6 to #8- 30 ft-lbs #9 and #10- 14 ft-lbs Link to comment Share on other sites More sharing options...
DirtyComanche Posted June 16, 2019 Share Posted June 16, 2019 7 hours ago, cruiser54 said: I think the factory torque spec was too low. Probably. I should have mentioned I torque them to standard as per the pattern, not whatever they spec. I think they changed the torque on the 4.0 ones 3 or 4 times over the years. Also I'm a 4.0 guy and didn't realize this is a 2.5 thread. Link to comment Share on other sites More sharing options...
cruiser54 Posted June 19, 2019 Share Posted June 19, 2019 On 6/16/2019 at 2:28 PM, DirtyComanche said: Probably. I should have mentioned I torque them to standard as per the pattern, not whatever they spec. I think they changed the torque on the 4.0 ones 3 or 4 times over the years. Also I'm a 4.0 guy and didn't realize this is a 2.5 thread. They loosened up on both engines. Just more prevalent on the 4 cylinder since there were fewer to loosen before issues began. I have never "torqued" those bolts on any of them. Never had an issue. Just relied on experience. Using an extension screws up/lowers the torque. Can't get a socket on all of them anyway....... The 4.0s at the dealer? 30,000 mile tune up? Part of it was to snug those bolts as they were backing out. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now