blown head gasket.
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Intermediate
Joined: Feb 2007
Posts: 33
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blown head gasket.
3 times in the last 1000 miles. Had the shop change out the head gasket a while back and now it keeps blowing. It is in the same spot every time. Checked the head and it is tru, checked the cylinder and it is tru, replaced the studs with new ones and it just blew again. Rear cylinder at the exhaust port. Any ideas?
Road Master
Joined: Sep 2006
Posts: 855
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From:
RE: blown head gasket.
Are the threads the studs screw into OK? Road a few weeks ago with someone who said his EVO was blowing head gaskets and he had to install a hela coil due to bad threads. Just a thought.
Seasoned HDF Member
Joined: Aug 2007
Posts: 8,198
Likes: 3,087
From: NW AR
RE: blown head gasket.
I'd also look at the area on the head where the head nut thingie goes into. \\; If there is a burr or something there, you might be getting an inaccurate reading when you torque the head down on that one. \\; You might also try giving that right rear nut thingie a little extra torque if that's where it's blowing, but I'd prefer to do it by the book. \\;
 \\;
Are you using the low torque, 1/4 turn method (factory shop manual) or are you using the torque to a reading method (aftermarket instructions)? \\; You might try which ever one your not using. \\; I'd also get that head and jug triple checked for flatness.
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 \\;
Are you using the low torque, 1/4 turn method (factory shop manual) or are you using the torque to a reading method (aftermarket instructions)? \\; You might try which ever one your not using. \\; I'd also get that head and jug triple checked for flatness.
 \\;
Intermediate
Joined: Sep 2007
Posts: 32
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RE: blown head gasket.
Well, talked to the wrench today. He says one of the bolts has pulled out of the engine case. The last time it pulled a couple of threads so he locktited it. It evidently did not hold, RATS!!!!!!!!!
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Road Master
Joined: Sep 2006
Posts: 855
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From:
RE: blown head gasket.
Exactly what I had mentioned.
Install a hela coil and repair those damaged threads.
Problem solved.
 \\;
Install a hela coil and repair those damaged threads.
Problem solved.
 \\;
ORIGINAL: Fritzwm
Well, talked to the wrench today. He says one of the bolts has pulled out of the engine case. The last time it pulled a couple of threads so he locktited it. It evidently did not hold, RATS!!!!!!!!!
Well, talked to the wrench today. He says one of the bolts has pulled out of the engine case. The last time it pulled a couple of threads so he locktited it. It evidently did not hold, RATS!!!!!!!!!
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Elite HDF Member
Joined: Jun 2007
Posts: 4,867
Likes: 268
From: People's Republic of Boulder Colorado
RE: blown head gasket.
I would also recommend going to a mechanic who isn't a total hack! \\;\\\\\\; Loctite on pulled crankcase-cylinder stud threads is ridiculous. \\;\\\\\\; No mechanic who is worth a sh*t would do that.
 \\;\\\\\\;
Good luck and ride safe,
 \\;\\\\\\;
John
 \\;\\\\\\;
Good luck and ride safe,
 \\;\\\\\\;
John
Elite HDF Member
Joined: Jun 2007
Posts: 4,867
Likes: 268
From: People's Republic of Boulder Colorado
RE: blown head gasket.
Damn! \\; I wish they'd get this site fixed! \\; They must have that mechanic that put loctite on those pulled threads working on it!