2.4L LE5 Performance Tech 16 valve 171 hp EcoTec with 163 lb-ft of torque

header torque

Old Oct 9, 2008 | 09:47 AM
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header torque

what torque should the 10 bolts to the exhaust header be? I think I read somewhere 10lbs, but that seems low!
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Old Oct 9, 2008 | 09:58 AM
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Exhaust Manifold to head nut torque is 14 N.m -- 124 lb in!

10 lb ft will do....remember they are small and go into aluminum!!!!
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Old Oct 9, 2008 | 02:40 PM
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thnx . . .
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Old Oct 9, 2008 | 03:55 PM
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Tighten
Tighten the nuts in the sequence shown to 14 Nˇm (10 lb ft).

8 6 1 3 2 9
7 4 5 10
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Old Oct 10, 2008 | 09:17 AM
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Originally Posted by Maven
Tighten
Tighten the nuts in the sequence shown to 14 Nˇm (10 lb ft).

8 6 1 3 2 9
7 4 5 10
cool, i appreciate the input

how about the header to downpipe torque, cause those were a B@#CH to get off!
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Old Oct 10, 2008 | 09:36 AM
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DP to exhaust manifold nuts - 50 N.m (37 lb ft)

H02S sensor - 30 N.m (22 lb ft)

Heat shield studs -- 22 N.M (16 lb ft)
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Old Oct 10, 2008 | 03:09 PM
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Originally Posted by Red07SSNA
Heat shield studs -- 22 N.M (16 lb ft)

Nobody cares about those




The DP nuts were a bitch to get off because of corrosion.
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Old Oct 10, 2008 | 03:11 PM
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Originally Posted by Maven
Tighten
Tighten the nuts in the sequence shown to 14 Nˇm (10 lb ft).

8 6 1 3 2 9
7 4 5 10
^ Very good! People need to realize how important it is to tighten them in these steps. Its always a good idea to go:

8 6 1 3 2 9
7 4 5 10

Then go around and double check in the same order.
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Old Oct 12, 2008 | 09:20 PM
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Wow, awesome info guys, i think im falling in love
uh, just kidding . . . please no cyber humping!!
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Old Oct 12, 2008 | 10:56 PM
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Originally Posted by Red07SSNA
DP to exhaust manifold nuts - 50 N.m (37 lb ft)

H02S sensor - 30 N.m (22 lb ft)

Heat shield studs -- 22 N.M (16 lb ft)

Nice info!
What about Downpipe to Catback?
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Old Oct 12, 2008 | 11:10 PM
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Sorry, your quota for questions has been exhausted

























Cat-to-muffler pipe nuts: 30 N.m (22 lb ft)

Update:

DP to exhaust manifold nuts - 50 N.m (37 lb ft)

H02S sensor 1 - 30 N.m (22 lb ft) Exhaust Manifold

Heat shield studs -- 22 N.M (16 lb ft)

H02S sensor 2 - 42 N.m (31 lb ft) Cat pipe

Source: 07 Factory Service Manual -- 2.4 section and engine Exhaust Section.

Last edited by Red07SSNA; Oct 12, 2008 at 11:11 PM. Reason: Automerged Doublepost
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Old Oct 12, 2008 | 11:10 PM
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haha, thanks for the quick reply dude
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Old Oct 12, 2008 | 11:14 PM
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That's what CSS.net is all about!!!!!
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