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Road Captain
Joined: Sep 2012
Posts: 675
Likes: 32
From: Massachusetts
studs were intact. the 2 inside (under the rocker box) head bolts had loosened (not surprised given how much the gasket had blown out)
What scares me now is theres a bit of flame cutting on the head surface. enough to see, not enough to catch a fingernail on. ive cleaned it up, and while it looks pretty rough, the "scratches" are barely perceptible to a fingers touch
the culprit
the jug
the head
What scares me now is theres a bit of flame cutting on the head surface. enough to see, not enough to catch a fingernail on. ive cleaned it up, and while it looks pretty rough, the "scratches" are barely perceptible to a fingers touch
the culprit
the jug
the head
Road Warrior
Joined: Oct 2009
Posts: 1,251
Likes: 1
I'll tell you my secret to making sure this doesn't happen again.... And this is the way I do it ..... Use a small amount of copper cote on the head gasket, do not use any lubricant on the head bolts or base of head bolts. Then follow the torque sequence in 10 lbs increments finishing at 55 ft/lbs, I know I know, per harley. I'm over torquing, yada yada yada, I've used the recommended 42 ft/lbs and had the bolts back out. Just like this .
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Road Captain
Joined: Sep 2012
Posts: 675
Likes: 32
From: Massachusetts
bolts didnt back out
i pulled a ****ing stud
figured "ya know i probably oughta make sure these are okay" as i was torqueing the head. was up to 22lb/ft (3rd "step" per cometic), and the second bolt just spun.
got a call out, heres hoping my buddy has a couple of TimeCert's left over from his fathers bike (also pulled a stud)
i pulled a ****ing stud
figured "ya know i probably oughta make sure these are okay" as i was torqueing the head. was up to 22lb/ft (3rd "step" per cometic), and the second bolt just spun.
got a call out, heres hoping my buddy has a couple of TimeCert's left over from his fathers bike (also pulled a stud)
Road Warrior
Joined: Oct 2009
Posts: 1,251
Likes: 1
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Thread Starter
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Road Captain
Joined: Sep 2012
Posts: 675
Likes: 32
From: Massachusetts
correction....i pulled (2) studs
now the cause: they torqued down properly (in sequence to 42lb/ft) on reassembly. perhaps they were right on the ragged edge, and the W6H with its .590 lift and compression-building characteristics just said "oh eff you"...i honestly couldnt begin to guess. 190psi cranking compression....shes up there, but should be far from ripping studs
now the cause: they torqued down properly (in sequence to 42lb/ft) on reassembly. perhaps they were right on the ragged edge, and the W6H with its .590 lift and compression-building characteristics just said "oh eff you"...i honestly couldnt begin to guess. 190psi cranking compression....shes up there, but should be far from ripping studs