Blown head gasket
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Road Captain
Joined: May 2011
Posts: 684
Likes: 9
From: Indian Head, PA
Ok, after putting a couple hundred miles on it, the exhaust nuts on the rear cylinder came loose and fell off, and a couple of the clamps came loose as well. I got new nuts and replaced them on the rear cylinder studs and retightened the front ones. How tight are these supposed to be to keep this from happening again?
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,593
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From: Honah Lee
Ok, after putting a couple hundred miles on it, the exhaust nuts on the rear cylinder came loose and fell off, and a couple of the clamps came loose as well. I got new nuts and replaced them on the rear cylinder studs and retightened the front ones. How tight are these supposed to be to keep this from happening again?
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Road Captain
Joined: May 2011
Posts: 684
Likes: 9
From: Indian Head, PA
I actually didn't replace the exhaust gaskets at the head since I am having the Indy replace the exhaust for me with the 2006 Twinkie take-off set he has and I was going to give him the new gaskets to use with the new system...
Outstanding HDF Member
Joined: Oct 2010
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From: Near Frankenmuth, MI
Been doing my homework going through the archives here.
D1gger,
I want to thank you for this thread. I also want to thank all those who were involved and added so much info. I've been taking notes.
Any updates as to the outcome a few years later?
I started a new conversation on my issues here: '86 Tour Glide, EVO Main Gaskets Leaking
I want to thank you for this thread. I also want to thank all those who were involved and added so much info. I've been taking notes.
Any updates as to the outcome a few years later?
I started a new conversation on my issues here: '86 Tour Glide, EVO Main Gaskets Leaking
Last edited by JohnnyC; Jan 24, 2014 at 09:20 AM. Reason: Moved questions to a new thread.
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
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From: Coromandel Peninsula New Zealand
With Evos you need to tighten the exhaust nuts, run it for a few miles, let it cool down and tighten again, you may need to do this up to 3 times before they stop coming loose.
Outstanding HDF Member
Joined: Oct 2010
Posts: 2,706
Likes: 14
From: Near Frankenmuth, MI
Been doing my homework going through the archives here.
Spanner,
Should I add my situation and questions to this existing discussion from back in 2011?
Should I add my situation and questions to this existing discussion from back in 2011?
Last edited by JohnnyC; Jan 24, 2014 at 09:19 AM. Reason: Decided to open a new thread specific to my issues.
Stellar HDF Member
Joined: Aug 2013
Posts: 3,428
Likes: 3,577
From: Texas
Make sure it is not a cracked exhaust pipe, This past weekend I had to pull the exhaust because the header pipe cracked just where it comes out of the head, I could feel the exhaust blowing out but didn't find it until I took the exhaust off.. Just a thought.
Last edited by RLH3175; Jan 23, 2014 at 06:18 PM.
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Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
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From: Coromandel Peninsula New Zealand
FWIW I have never encountered a pulled or stretched head stud but then bikes get messed with far less down here than in Americky.
Blown head gaskets can have many causes and the usual suspects as far as I can see are:
Incorrect torqueing of head at some point.
Stuffed base gasket
Cheap, nasty gasket sets (no name brand....you sometimes see them)
Very high miles
Overheating in parades etc.
Outstanding HDF Member
Joined: Oct 2010
Posts: 2,706
Likes: 14
From: Near Frankenmuth, MI
Thanks Spanner.
I decided to start a new thread about my specific issues after all. I think it might get more answers that way.
'86 Tour Glide, EVO Main Gaskets Leaking
I decided to start a new thread about my specific issues after all. I think it might get more answers that way.
'86 Tour Glide, EVO Main Gaskets Leaking
Last edited by JohnnyC; Jan 24, 2014 at 09:21 AM.
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