header gaskets
06-05-2007, 06:23 PM
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header gaskets
alrite i have the obx stainless steel headers for the 2.2 and i keep blowing the gasket that is between the header and the downpipe!! the obx gasket was crap so i replaced it with a headman headers one which i also blew. 
i was just wondering if this could be caused by too much back pressure b/c i still have the stock cat on.
any help is appreciated
i was just wondering if this could be caused by too much back pressure b/c i still have the stock cat on. any help is appreciated
06-05-2007, 07:17 PM
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Originally Posted by 97cl2.2motegiM7's
Are you using the right torque specs?
06-05-2007, 09:04 PM
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Originally Posted by <syphers>
i have no idea if im using the right torque specs. what did you torque yours too? i just tightened them as much as i could.
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06-06-2007, 06:06 PM
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its the gasket between the header and downpipe, not the manifold gasket. i just got a copper gasket so hopefully that one wont go. i still need to kno the correct torque specs though. anyone kno them?
06-06-2007, 07:01 PM
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The correct torque specs are:
- Exhaust manifold self-locking nut (header to manifold): 23 Ft.Lbs / 31 Nm
- Shroud bolts (heatshield): 16 ft.lbs / 22 N.m
- Exhaust pipe flange nuts (pipe to cat, cat to pipes, etc.): 40 ft.lbs / 54 N.m
- Flexplate bolts: 54 ft.lbs / 73 N.m
- Exhaust manifold self-locking nut (header to manifold): 23 Ft.Lbs / 31 Nm
- Shroud bolts (heatshield): 16 ft.lbs / 22 N.m
- Exhaust pipe flange nuts (pipe to cat, cat to pipes, etc.): 40 ft.lbs / 54 N.m
- Flexplate bolts: 54 ft.lbs / 73 N.m
06-06-2007, 08:32 PM
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06-06-2007, 08:36 PM
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Originally Posted by 97BlackAckCL
like this:
http://www.chevyhiperformance.com/te.../photo_03.html
06-08-2007, 07:08 PM
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no... your both wrong. it is triangular, with the two exhaust holes and the three bolt holes. obx still hasnt returned my email >
but i replaced my old gasket with a new pacesetter copper gasket and so far no leaks. woot! hopefully it stays this way. i just tightened the bolts till they were real snug.
but i replaced my old gasket with a new pacesetter copper gasket and so far no leaks. woot! hopefully it stays this way. i just tightened the bolts till they were real snug.
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