Compression release newbie
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Road Warrior
Joined: Mar 2010
Posts: 1,505
Likes: 56
From: Vancouver Island, British Columbia
Compression release newbie
What's the deal with these things please? What is the cut off point in compression for requiring them to be installed 10+ perhaps? What does manual mean? You have to open them both up before cranking the mo mo over?
Sorry for the simple questions.
Sorry for the simple questions.
Outstanding HDF Member
Joined: Aug 2010
Posts: 3,486
Likes: 6
From: Union,Ms
If you don't have dual plug heads, the heads have to be removed and they have to be drilled and tapped for CR's. Manual ones have a button you push on them before you crank it. When the engine fires up, they close.
Club Member
Joined: Dec 2007
Posts: 4,192
Likes: 168
From: Knoxville, Tn
CRs
Yes, if you are running 10/1 or higher compression, it just makes it easier on your starter to run them. The automatic ones open by themselves before cranking but require an electrical harness to the handle bars. The manuals have to be opened by hand. If you are running stock heads, they have to be drilled for them.
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