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How tight should you tighten exhaust manifold bolts?
Every vehicle has different levels of torque necessary to properly tighten its bolts. The standard is to use 20 to 30 foot-pounds of torque.
How tight should exhaust nuts be?
Tighten the bottom nut of the rear cylinder head exhaust flange to 9-18 in-lbs (1-2 Nm). Tighten the top nut to 100-120 in-lbs (11.3-13.6 Nm). Final tighten the bottom nut to 100-120 in-lbs (11.3-13.6 Nm). Its also why I always keep a couple extra packed in my saddlebags, just incase.
Can exhaust manifold bolts come loose?
If you torque them when it’s hot, as it cools the bolts will loosen up to a small extent.
Should I’re torque exhaust manifold bolts?
Yes re torque after a cool down cycle . Actually with a calibrated instrument otherwise it kinda defeats the purpose . I would advise this to all the components of the engine and even accessories . Not done commonly but it’s great preventative maintenance I assure you .
Can I replace exhaust studs with bolts?
Super Moderator. I agree, the bolts in place of studs and nuts would be okay. Be sure to observe the torque specs for the bolts, i.e. to be the same as the nuts on the studs. You dont want an exhaust manifold to be too tight – it interferes with the manifold expanding at a different rate than the head.
Do I need to torque my exhaust?
You should have a torque wrench and manual. But you can also get by without it. You can “feel” the tightness for things like rearsets, slider spools, etc which usually require 12-16 ft lbs and also more vital bolt areas like the exhaust header bolts which can be like 26.
Is it possible to retighten an exhaust manifold?
Firstly.. If there is a gasket it should be replaced. If the studs etc are in very good condition then you could try undoing & re-torquing them. However due to the materials and heat cycles these parts go through the studs are often very tight or seized up.
Why is there no torque on my exhaust manifold?
This is because quite often these nuts/studs etc just jam-up against each other, meaning that they will torque up OK, but they are only tightening against themselves without actually putting any extra pressure on the manifold to seal it. New studs & nuts overcome this problem.
Is there a leak in the exhaust manifold?
There is no audible leak sound (tapping) at idle and when revving. When driving there is a slightly “hollow” sound at high revs. I do smell some raw exhaust intermittently. However I think some carbon may have sealed up the leak.