Road King Performance upgrade needed!
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Joined: Mar 2007
Posts: 54
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Engine size
Bore
Head gasket thickness
Head cc's
Piston dome cc's
Cam that your using (or want to use)
Spend a little time there is s great tool to help figure things out.
Ultimate HDF Member
Joined: Mar 2012
Posts: 6,129
Likes: 143
From: Santa Cruz
Compression test psi number and CCP (cold cranking compression) are the same thing. Ya can use the bigboyzheadporting.com calculator to figure out everything else after ya have a starting point with a compression test.
Outstanding HDF Member
Joined: Feb 2007
Posts: 2,976
Likes: 49
From: Northern California
If it were me in your shoes the one thing I would do is have compression releases installed while the heads are off. Nothing wrong with being easier on the starter on the ol girl.
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Seasoned HDF Member
Joined: Dec 2012
Posts: 6,663
Likes: 502
From: Orange County
Went to the Rocky Point rally this past weekend, the motor got hot waiting in line at the border. We stopped right after and waited for everyone to get across before we got going again. When I took off, a short time later, it was really hard to start. Running kinda slow and sluggish, I looked down and saw only 20 psi oil pressure. It took about a mile, riding real easy before the pressure came back up to 60-70, which was where it normally ran.
Hoping I didn't do any damage, got me home, another 400 miles that day.
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