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 Post subject: H2B port timing
PostPosted: Fri Mar 03, 2017 12:46 pm 
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Joined: Thu Sep 29, 2016 4:32 am
Posts: 615
Location: Indianapolis, IN
Hi, I searched and came up short, I need to know the stock H2B port timings, degrees preferred, thank you!

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1974 Kawasaki H2B 750, 1981 Yamaha XV750 Cafe, 1986 Kawasaki KDX200, 2003 Honda XR100, 2004 SDG140. 2006 Ninja 500R Turbo intercooled fuel injected.


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 Post subject: Re: H2B port timing
PostPosted: Fri Mar 03, 2017 12:50 pm 
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Joined: Tue Jun 07, 2011 6:36 am
Posts: 2691
Location: Dandridge, TN, USA
page 15
http://www.kawatriple.com/manuals/hseries/sec3.pdf

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 Post subject: Re: H2B port timing
PostPosted: Fri Mar 03, 2017 1:05 pm 
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Joined: Thu Sep 29, 2016 4:32 am
Posts: 615
Location: Indianapolis, IN
Thank you for that, nice info. One other question on this similar topic, I have a spare set of cylinders that I suspect are early H2 cylinders, well, before the H2B anyway, how would I tell these apart? Port height meaurements or?

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1974 Kawasaki H2B 750, 1981 Yamaha XV750 Cafe, 1986 Kawasaki KDX200, 2003 Honda XR100, 2004 SDG140. 2006 Ninja 500R Turbo intercooled fuel injected.


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 Post subject: Re: H2B port timing
PostPosted: Fri Mar 03, 2017 1:16 pm 
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Joined: Tue Jun 07, 2011 6:37 am
Posts: 10460
Location: Rio Rancho, New Mexico
You can do a quick check by the transfer cutouts in the sleeve. Early is the cutout are way below the gasket surface (cylinder upside down), 2nd Generation has a pretty good angle on the cutout, and 3rd gen his the cutout a ways below the gasket surface.

Image

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 Post subject: Re: H2B port timing
PostPosted: Fri Mar 03, 2017 7:58 pm 
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Joined: Thu Sep 29, 2016 4:32 am
Posts: 615
Location: Indianapolis, IN
So Kawasaki's way to reduce power was to choke off the transfer inlets, and the didn't really change the port timings?
I was asking about port timings as I am making hydroformed 304 stainless chambers for my H2B and going through the length details with someone for the design.

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1974 Kawasaki H2B 750, 1981 Yamaha XV750 Cafe, 1986 Kawasaki KDX200, 2003 Honda XR100, 2004 SDG140. 2006 Ninja 500R Turbo intercooled fuel injected.


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 Post subject: Re: H2B port timing
PostPosted: Fri Mar 03, 2017 8:10 pm 
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Joined: Tue Jun 07, 2011 6:37 am
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Location: Rio Rancho, New Mexico
That, the pistons, and i think more restrictive air filter canister.

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Twist the throttle, tilt the horizon, and have a great time. What triples are all about...........


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 Post subject: Re: H2B port timing
PostPosted: Sat Mar 04, 2017 10:13 am 
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Joined: Thu Jun 09, 2011 3:06 am
Posts: 4364
Location: PARIS FRANCE
John all H2 air filter canisters were the same :mrgreen:


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 Post subject: Re: H2B port timing
PostPosted: Sat Mar 04, 2017 11:23 am 
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Joined: Tue Jun 07, 2011 6:37 am
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Location: Rio Rancho, New Mexico
That's why I said "I think"......... ;)

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