Quote:
Originally Posted by Lakitu
Yeah I installed it all myself, and need to get back under the car to torque everything down. The bolts and the flanges on my headers where they connect to the engine are also SUPER rusted to hell. I think those may have been leaking for months....
Just trying to confirm what these correspond to
Assuming that they are in order from engine to muffler.
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Yea, I installed mine myself as well, when you go through a few heat cycles btw as the bolts loosen and such and need to be tightened a little past those torque values.
The 6 header bolts on the motor are 22 ft lbs, I tightened them to 24 on the second reinstall with the RTV
The header to overpipe is 26 ft-lbs, that I kept the same with the rtv and new gaskets
32 ft-lbs on the 2 nuts that connect the Front Pipe to the Over Pipe.
37 ft-lbs for the Front Pipe hanger bolt.
13 ft-lbs on the 2 nuts that connect the Front Pipe to the midpipe (mid pipe is part of the "catback")
As for the muffler to mid-pipe, I'd go as snug as you can feel because I'd assume they'd be anywhere from 13-25 ft-lbs
So here's what the service manual list corresponds too:
Exhaust - bolts securing bracket of exhaust pipe assembly (FR) | 36.9 (front pipe hanger)
Exhaust Manifold Sub-Assembly | 22.1 (6 bolts that connect the header to the engine)
Exhaust Pipe Assembly (FR) | 31.3 (frontpipe to over pipe)
Exhaust Pipe Assembly (CTR) | 13.3 (frontpipe->midpipe?)
Exhaust Pipe Sub-Assembly (FR) | 25.8 (header to overpipe)
You really shouldn't be fretting over these numbers though as they most likely aren't whats causing an exhaust leak, also if you're not used to it aftermarket headers are thin walled and make way more noise. Also try and feel around the exhaust sections during a cold start (being careful) and feel for warm air while the exhaust isn't too hot.
My fix for these woes with just a header and axleback was high temp exhaust rtv and grimmspeed gaskets, makes up for manufacturing errors and other problems and works perfectly.