Head porting - Kawasaki Ninja H2 Forum
 
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post #1 of 8 Old 08-22-2019, 02:47 AM Thread Starter
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Head porting

Has anyone had the head ported/polished?
Is there much/any room for improvement from stock?
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post #2 of 8 Old 08-22-2019, 01:17 PM
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Sometimes on extremely refined race motors, polishing isnt best. Within intake systems, the surface is usually deliberately textured to a degree of uniform roughness to encourage fuel deposited on the port walls to evaporate quickly. A rough surface on selected areas of the port may also alter flow by energizing the boundary layer, which can alter the flow path noticeably, possibly increasing flow. This is similar to what the dimples on a golf ball do. Theres always the need ive noticed to refine and change performance in motors with humans. Its in our DNA, but in my opinion, if kawasaki's latest model H2 or H2R isnt polished after 90 trillion hours of testing, theres a reason. Just my opinion.
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post #3 of 8 Old 08-22-2019, 03:40 PM Thread Starter
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A valued one. Point taken. Thanks.
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post #4 of 8 Old 08-23-2019, 09:35 AM
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I have had it done and it is well worth it!

353 rwhp with ported head, cams and stage 3 gears

238.106 mph GPS Autobahn - Pump Gas
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post #5 of 8 Old 08-23-2019, 10:48 AM Thread Starter
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Excellent figures. Where did
you go for the head work?
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post #6 of 8 Old 08-23-2019, 05:26 PM
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Originally Posted by H2lsr View Post
I have had it done and it is well worth it!

353 rwhp with ported head, cams and stage 3 gears
Thats just fooking crazy power, I struggle to hold on to mine and its 100+hp less

The GPS speed in your sig is also crazy

Breaking barriers, carry on

Rob

Adventure before Dementia
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post #7 of 8 Old 08-23-2019, 05:47 PM
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I guess at that level, the life of the bike doesnt matter. Youre not hitting 40k miles on her.
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post #8 of 8 Old 08-28-2019, 12:58 AM
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Might have Aton of rehouse but it won’t last long
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