Engine compression
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Road Warrior
Joined: Dec 2005
Posts: 1,644
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From: So-Cal
Engine compression
Is 10.6:1 compression too much for street motors. I was looking at the GMR website and their power package 2. It sounds good, but is that compression too much for a RK street bike. Also what other issues would you run into - starters, clutch etc
Road Master
Joined: Jan 2007
Posts: 770
Likes: 2
From: East NM
RE: Engine compression
A lot depends on the cam(s) you have. More radical valve timing reduces the compression pressure at low speeds where detonation is more likely to be a problem. This will also help lower the load on your starter.
Extreme HDF Member
Joined: Nov 2006
Posts: 13,389
Likes: 26
From: Windham,Maine
RE: Engine compression
Not at all,it all depends on the engine package.My 10:8 to 1 motor runs like a stocker.If your going to run a lot more HP than stock,you certainly will need to beef up the clutch.The starter can be a stock HD,just upgrade your cables and make certain the grounds are in top shape.Most all the big inch motors come with compression releases installed.
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Ben E
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Nov 25, 2011 06:19 AM
