Exhaust bolt torque question
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Joined: Nov 2009
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Exhaust bolt torque question
Hello friends. I'm installing a new 454 big block (removed my 350) and removed my side pipes and going back to rear exhaust
I have the headers on torqued. The exhaust is hung but not yet tightened. I'm not sure of the torque specs on the flange - this is a donut system and I don't want to over tighten as I have never installed this before. Any guidance?
Also. Anyone have any pictures of your exhaust with perhaps extra hangers near or around the cross member ? This is a 2.5 inch exhaust and I'm sure it will rattle, so I picked up so e hangers and I want to secure the pipes in the middle of the cross member holes best I can. Really appreciate any feedback.
I have the headers on torqued. The exhaust is hung but not yet tightened. I'm not sure of the torque specs on the flange - this is a donut system and I don't want to over tighten as I have never installed this before. Any guidance?
Also. Anyone have any pictures of your exhaust with perhaps extra hangers near or around the cross member ? This is a 2.5 inch exhaust and I'm sure it will rattle, so I picked up so e hangers and I want to secure the pipes in the middle of the cross member holes best I can. Really appreciate any feedback.
Team Owner
Joined: Jan 2006
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From: Crossville TN
Exhaust manifold outlet bolts/nut torque to about 25 ft-lbs. Advice on exhaust hangers is that ALL hangers (from frame to pipes) should have rubber isolaters on them to keep system "quiet".
Safety Car
Joined: Mar 2007
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From: Bridgewater nj
Those bolts come loose very easily but you don't want to bend the flange either. I usual tighten until you see a little deflection and either double nut it, loctite or stage 8 locking bolts.
Double nuts is usually what I do with lock washers on both sides.
Double nuts is usually what I do with lock washers on both sides.
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Joined: Nov 2009
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Thank you - exactly what I needed ! I will use red loctite, double bolts with lock,washer and tighten until I notice the donut squish a little.
As for my hangers - I bought generic hangers from jegs with rubber, they attach to an exhaust U-Bolt. I will drill the cross member and attach the hanger with self drilling screws with lock washers.
I really appreciate the feed back !!!
As for my hangers - I bought generic hangers from jegs with rubber, they attach to an exhaust U-Bolt. I will drill the cross member and attach the hanger with self drilling screws with lock washers.
I really appreciate the feed back !!!
