Head Pipe Installation

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Apr 20, 2011 | 07:08 AM

KCFLHRC

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From: Jayhawk Country

Head Pipe Installation

I'm getting ready to reinstall my CATLESS head pipe on my 11 Limited and was wondering what the proper procedure was as far as tightening the flange nuts and what the torque specs are. I don't have a service manual yet. Any help would be appreciated.

Apr 20, 2011 | 07:27 AM

equandt

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Joined: Aug 2006

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From: Wisconsin

I just did this this past weekend. I followed the procedure in the HD service manual. From memory (someone may want to check me on this):

Tighten the lower nut on the rear flange to 9 to 12 in lbs
Tighten the top nut on the rear flange to 100 to 120 in lbs
Tighten the lower nut on the rear flange to 100 to 120 in lbs

Tighten the lower nut on the front flange to 9 to 12 in lbs
Tighten the top nut on the front flange to 100 to 120 in lbs
Tighten the lower nut on the front flange to 100 to 120 in lbs

Hope this helps. Good luck.

Apr 20, 2011 | 07:41 AM

RoaddogRG2011

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Joined: Mar 2011

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From: Maryland

How was it getting the CAT removed?

Apr 20, 2011 | 09:16 AM

Northbound Southerner

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From: San Quirino, Italy

I would check the manual again. I am not at home but it seems like those torque values are really high...I could be wrong. I am a lot

Apr 20, 2011 | 11:22 AM

scoobs

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Joined: Jun 2007

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From: Wisconsin

Equandt has it right...just looked in my book.

Apr 20, 2011 | 01:02 PM

HDThunder

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Joined: Feb 2010

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From: Central MA

Quote:

Originally Posted by themouth!!!

I would check the manual again. I am not at home but it seems like those torque values are really high...I could be wrong. I am a lot

You realize he said INCH lbs. right? That's the equivalent of about 8-10 FT/lbs. Not really that high.

Apr 20, 2011 | 08:51 PM

KCFLHRC

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From: Jayhawk Country

Quote:

Originally Posted by RoaddogRG2011

How was it getting the CAT removed?

Had a local shop cut the pipe in half. Removing all the CAT material is a pain. Then had a local welder put it back together. Took probably 3 to 4 hours to remove all the CAT and clean it all up.