exhaust manifold torque specs and pattern? - JeepForum.com
 
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post #1 of 9 Old 10-18-2010, 05:05 PM Thread Starter
egodfrey
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exhaust manifold torque specs and pattern?

Hey i cant find my haynes manual...anyone know of somewhere online that has the pattern in which to install and tighten the manifold bolts and to what torque specs?


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post #2 of 9 Old 10-18-2010, 05:55 PM
99Greenmachine
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its 24 ft lbs...

i couldnt fit my torque wrench in there so i just put em as tight as i could

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post #3 of 9 Old 10-18-2010, 06:17 PM
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Yeah 24 ft lbs except for the two out most nuts they're 23 ft lbs. I beleive it's something to do with them being nuts on studs, but it's stupid. 1 ft lbs for that size of a bolt going into cast iron So I just torqued them all at 24 ft lbs. As far as the tightening pattern, snug everything up(finger tight) then start in the middle & work your way outward. BTW if you're ever in question and don't have the time or resources that goes with most anything unless there are engineering mistakes. Start in the middle and work your way outward.
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post #4 of 9 Old 10-18-2010, 10:39 PM
nrpalmer32
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I just installed my intake/exhaust on my '87 Renix tonight and IIRC when I looked the book I noticed the H.O. bolt pattern. It was the the center bolt towards the rear on the bottom as #1, then the center bolt towards to the front on the bottom as #2. Then the center bolt on top as #3, then possibly the next centered bolts on the bottom, followed by their corresponding top bolts, then the bottom outside. Again, it is different that the Renix but I did take a look at the H.O. models and I think thats correct.

I ended up getting to use a torque wrench but it took a lot of combination of extensions and stuff, lol. It really sucked
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post #5 of 9 Old 10-19-2010, 06:07 AM
cruiser54
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And every time you add an extension or swivel, the torque value changed/reduced.

I just tighten them up in 3 "pulls". Seat all the fasteners kinda hand tight in the first sequence. Start snugging them down in the second sequence. And put a good final tighten on them in the last sequence.
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post #6 of 9 Old 10-19-2010, 07:49 AM
99Greenmachine
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I want to add that I just did this and have a little say.

I just pulled em pretty darn tight cause let me tell you, they were on tight when i took em off.

This weekend I went to re-tighten them per the instructions and a couple were almost finger loose. So make sure you re-tighten them again after a couple hundred miles

'99 XJ Sport MY BUILD

Thank You Hooligan!!!

[SIZE="4"]XJ Dana 44, Yukon 4.56 D44 Gears, LeBaron hood vents for sale
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post #7 of 9 Old 10-19-2010, 04:00 PM
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Quote:
Originally Posted by 99Greenmachine View Post
I want to add that I just did this and have a little say.

I just pulled em pretty darn tight cause let me tell you, they were on tight when i took em off.

This weekend I went to re-tighten them per the instructions and a couple were almost finger loose. So make sure you re-tighten them again after a couple hundred miles
And do this on a COLD engine.
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post #8 of 9 Old 10-19-2010, 07:51 PM
99Greenmachine
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Quote:
Originally Posted by cruiser54 View Post
And do this on a COLD engine.
YES!

'99 XJ Sport MY BUILD

Thank You Hooligan!!!

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post #9 of 9 Old 10-20-2010, 08:00 AM Thread Starter
egodfrey
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ggot my engine all back togehter!!! its smokin but my buddy says it because of the oily coating they put on the manifold...makes sense

So many people to thank here's a start to the list
Spidertrax, Yukon, rustys, warn, branik, PSC, advance adapters, Bad wheels, interco, essentially off-road. And many more

Most of all thanks too Ian Johnson and the xtreme off-road crew for all their work, and 4 wheel to heal for their part in it too.
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