Er6 Compression (where from?) - Kawasaki Versys Forum
 
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post #1 of 9 (permalink) Old 01-10-2010, 11:17 AM Thread Starter
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Er6 Compression (where from?)

Just thrown in some Er6 pistons (and cams) but the pistons measure the same and in fact turns out, the later years part numbers are the same. Heads/gaskets "appear" the same too from measurements done over the phone.

nor is a dynamic compresion issue, so bit of a msytery? - anyone know where its stated where the hike comes from?
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post #2 of 9 (permalink) Old 01-10-2010, 12:11 PM
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i don't know but i can tell you that the er6 cams MAKES a LOT of difference on versys
i installed them last week, and it's a totally different bike now
Max speed of 220+km/h
You will have a dyno asap
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post #3 of 9 (permalink) Old 01-11-2010, 12:17 PM Thread Starter
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i don't know but i can tell you that the er6 cams MAKES a LOT of difference on versys
i installed them last week, and it's a totally different bike now
Max speed of 220+km/h
You will have a dyno asap
thats 130mph! - pretty big jump for cams? Top speed for me [indicated/15t] on the V was only around 115/120 tops. But describe the differences now?

I took it up the road to check for leaks, didnt seem any worse top gear roll on but icy roads, could'nt go mad.
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post #4 of 9 (permalink) Old 01-12-2010, 05:41 PM
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Versys, ER6, Ninja 650R's all share the same pistons, head gasket, and cylinder base gasket. The Versys must have more volume in the head's combustion chamber, as small and unperceivable as the difference may be. You could confirm this with the water volume in the holed plexiglass cover method...

Last edited by invader; 01-12-2010 at 06:03 PM.
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post #5 of 9 (permalink) Old 01-13-2010, 12:20 PM
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If that is the case the part number for the head would be different, the head could be .0001 shorter too, that would bump compression as well, lots of ways to adjust compression. The cams are different for sure.
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post #6 of 9 (permalink) Old 01-13-2010, 04:32 PM
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If that is the case the part number for the head would be different, the head could be .0001 shorter too, that would bump compression as well, lots of ways to adjust compression. The cams are different for sure.
Don't forget the pipes
The versys's pipes have a connection between them, for better performance at the low rpm's
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post #7 of 9 (permalink) Old 01-13-2010, 05:19 PM
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If that is the case the part number for the head would be different, the head could be .0001 shorter too, that would bump compression as well, lots of ways to adjust compression. The cams are different for sure.
Part numbers are in fact different for the head and the cylinder block. The difference is likely in the head's combustion chamber volume.
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post #8 of 9 (permalink) Old 01-13-2010, 05:29 PM Thread Starter
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normally gasket/pistons are easiest/cost effective rather revise head for a small bump in Comp? - but comparing with V2sam's Er6, heads seem check out precisely. Had to whack it back together, so no chance to compare volumes unfortunately.

Going to contact Kawsaki when back home
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post #9 of 9 (permalink) Old 01-14-2010, 03:02 PM
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We are aspecting your information, as, after installing the cams from ninja650r, i saw that i have a little less power from 9500rps's to 10500rps's
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