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Author Topic: decking either the head or the cylinders for more compression?  (Read 1033 times)

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Offline bucky katt

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decking either the head or the cylinders for more compression?
« on: October 27, 2009, 11:33:59 AM »
i have a 750 and i'm thinking i want to do a cam, head porting and more compression. is it doable to bump compression on a 750k head without having to go to a shorter cam chain? or am i just dreaming again?
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Offline simon#42

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Re: decking either the head or the cylinders for more compression?
« Reply #1 on: October 27, 2009, 03:17:42 PM »
well i took 1.1mm off my f2 head and still have plenty of adjustment left in the chain . an adjustable cam sprocket is a good idea to get it all timed right though . if the bike is standard you would probably be better off getting an 836 kit , more cc and more compression without any messing about.
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Offline the technological J

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Re: decking either the head or the cylinders for more compression?
« Reply #2 on: October 27, 2009, 03:31:40 PM »
i was thinkning about the same thing (Hope this isnt a thread jack) but is there anything to worry about like higher octane fuel or can u just advance the timing?
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Offline simon#42

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Re: decking either the head or the cylinders for more compression?
« Reply #3 on: October 28, 2009, 11:19:03 AM »
it depends how high you take the compression ratio , i run 10.4 to 1  on standard 95 octane unleaded without any ignition changes with no problems
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Offline MRieck

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Re: decking either the head or the cylinders for more compression?
« Reply #4 on: October 28, 2009, 11:41:25 AM »
Decking the cylinder will tight up squish which is a good thing
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