Exhaust Manifold torque

Pete

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Feb 23, 2015
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Does anyone know what the proper torque is for the exhaust manifold on a 2005 trailblazer with a six cylinder engine?
 
BlazingTrails recommends to use anti-seize on the manifold bolts to get a better grip on the threads and provide a better torque.
 

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Jeremy2994 said:
Apply thread lock as well these bolts are known to back out after a while.
Actually I recommend the opposite, I apply anti seize compound to all of the manifold bolts I install because the bolts tend to break off when removed. When properly torqued they will not come out on their own.

Actually any time I install bolts into aluminum I apply anti size compound with few exceptions. It also lubricates the threads and you get a more accurate torque reading.

There are obviously some things that do need thread locker however, shortlist being things like flywheel bolts, safety items, timing components etc.

Imo
 
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BlazingTrails said:
Actually I recommend the opposite, I apply anti seize compound to all of the manifold bolts I install because the bolts tend to break off when removed. When properly torqued they will not come out on their own.

Actually any time I install bolts into aluminum I apply anti size compound with few exceptions. It also lubricates the threads and you get a more accurate torque reading.

There are obviously some things that do need thread locker however, shortlist being things like flywheel bolts, safety items, timing components etc.

Imo
I was really thinking about mentioning to use anti-seize instead but many users have reported completely missing 1 or more bolts from the manifold. Which is why sometimes thread lock is recommended. But since you provided a great explanation I'll go with anti-seize then. Thank you!
 
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Mounce said:
Personally I'd rather have missing/loose bolts than broken ones that have to be drilled out then tapped.
Amen to that! Just be sure to use a nice light coating of antisieze. Too much will affect the torque. Don't need to have it gooped on there.
 

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