Possible 4 valve head conversion

Drivetrain upgrades, engine upgrades, or any other mods to gain speed or acceleration.

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dem0nk1d
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Possible 4 valve head conversion

Post by dem0nk1d »

So I I came across this picture.
Image
Image

So apparently they are using the CBR150i head on the 125 engine. I take it this is the 125 engine because the engine mounting locations are on the top side of the motor. Quite interesting but i am sure this isn't a bolt on application. Anyone know anything about this conversion? I'd love to slap a 4 valve head on the 150.

Well thought i'd share this.
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wingz
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Re: Possible 4 valve head conversion

Post by wingz »

That kitchen is dirtier than mine.
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dem0nk1d
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Re: Possible 4 valve head conversion

Post by dem0nk1d »

wingz wrote:That kitchen is dirtier than mine.
Hahahah :lol: That's not someones kitchen. Over in most Asian countries they use tiles in their workshops for some reason. I prefer concrete, because you're bound to drop something.
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maddiedog
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Re: Possible 4 valve head conversion

Post by maddiedog »

Odd. This is the first I've seen of a 4-valve conversion. Where did you find the pic, and is there more info? I wonder how this would affect the power output of the engine...
Currently ride: Nothing right now - mostly mountain biking with my boys until they're old enough to ride :lol:
Previously rides: 2011 Honda PCX 125, 2005 V-Strom DL650, 1974 Vespa Ciao, 2011 Honda PCX 170 (tons of mods - takegawa 170cc big bore kit, gears, etc), 1996 Honda Nighthawk 250, 1987 Honda Spree, 2000 KTM 125SX, 2003 Honda Silverwing, 2007 Genuine Buddy 125, 1998 Honda PC800, 2008 Buddy 125 (white), 2008 Buddy 125 (red), 2001 Honda Reflex, 1987 Honda Elite, 1988 Honda Spree, 2007 Yamaha Vino, 2007 Honda Metro, 2x 125cc pure-chinesium dirt bikes
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dem0nk1d
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Re: Possible 4 valve head conversion

Post by dem0nk1d »

maddiedog wrote:Odd. This is the first I've seen of a 4-valve conversion. Where did you find the pic, and is there more info? I wonder how this would affect the power output of the engine...
Maggiedog,

I found it on the Thai Board, i couldn't convert half the broken engrish. But i got the idea it's the CBR150i head on the 125 engine. I heard the 125 engine can accept the 150pcx head with no issues for the bigger valves. I am not sure how much of a bolt on this is. I will give more info later. I just have to decrypt engrish

More to come.
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Slickvic
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Re: Possible 4 valve head conversion

Post by Slickvic »

Image
Previous - 1986 Honda Elite 250, 2007 Ninja 500r, 2013 Honda PCX-150
Current - 2015 Honda CBR650F :o
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Re: Possible 4 valve head conversion

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Re: Possible 4 valve head conversion

Post by chainsaw »

I used google chrome to translate it and the thread mentions seizures, sparkly flying and 5 star balls :lol: . The positioning of the cloth makes me suspicious plus they mention about the timing chains being on different sides.
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