DOHC Motors

[SoPackedCustoms]

Any one know of these i know they make them and stuff but what kind of power can you get out of them

[funrider]

Any one know of these i know they make them and stuff but what kind of power can you get out of them

Hi,

for crf50 type engine = 17 to 23Hp

DAYTONA 119cc = 17 to 19Hp
TAKEGAWA 124cc = 18 to 21Hp
DAYTONA 150cc = 20 to 23Hp
KITACO 124cc = 19 to 22Hp

for klx110 or YX engine = 17 to 25hp

these powers are at the rear wheel depending on the settings of the fuel, ignition and exhaust.

[Blitz$M.Inc.$]

now for the funny part...the prices

[swheels]

now for the funny part...the pricesYeah for amount of money it'll cost ya.You might as well buy a 200cc 2stroke motor and drop in.
To be clear those are not just drop that head on your motor and you instantly get that much hp.Infact if you google that head you should come up on plenty of threads from planet minis that will give you more insight.If i remember correctly.One was telling how he had the doch head on his motor and his buddy was running the v2 head.The guy said the v2 head had more lowend.And judging from minds i can see how it's possible.It pulls hard low to mid without even twisting the throttle to much.(FCR carb on helps)But at extremely HIGH rpms in lower gears it fall off a bit.But a kquick change of a cam could change that.thumbsup2

[funrider]

Yeah for amount of money it'll cost ya.You might as well buy a 200cc 2stroke motor and drop in.
To be clear those are not just drop that head on your motor and you instantly get that much hp.Infact if you google that head you should come up on plenty of threads from planet minis that will give you more insight.If i remember correctly.One was telling how he had the doch head on his motor and his buddy was running the v2 head.The guy said the v2 head had more lowend.And judging from minds i can see how it's possible.It pulls hard low to mid without even twisting the throttle to much.(FCR carb on helps)But at extremely HIGH rpms in lower gears it fall off a bit.But a kquick change of a cam could change that.thumbsup2

Yeah,

I have 1 KITACO 124cc ULTRA SE ( with titanium valves ) and I kill DOHC engine on the road, so...

[swheels]

Yeah,

I have 1 KITACO 124cc ULTRA SE ( with titanium valves ) and I kill DOHC engine on the road, so...Ti valves now your talking.Spill the beans man.Cuase iv'e heard No i was told that the ti valves don't take heat to kindly.I wanted to put ti valves in my v2 head.Inquiring minds wanna know????

[X7rocks]

i also wanna know if you can send me a +R valve head dealer price to see if they work on our motors :)

[funrider]

Ti valves now your talking.Spill the beans man.Cuase iv'e heard No i was told that the ti valves don't take heat to kindly.I wanted to put ti valves in my v2 head.Inquiring minds wanna know????

Hi,

there is a possibility that you write correctly? Because I did not understand all what you say, even if I use a translator is not very understandable for me, thank you for your attention.

[Supercharged]

me and kenny are going for the +R

[Supercharged]

YouTube - 146 dohc street run

haw haw git it

YouTube - 17HP Honda Monkey DYNO

[The Nutty Professor]

Hi,

there is a possibility that you write correctly? Because I did not understand all what you say, even if I use a translator is not very understandable for me, thank you for your attention.


What he's saying is that titanium valves do not work well when they get too hot. In a cylinder head that uses them they are only used for the intake side. The exhaust is either steel or stainless steel.

As for power everyone thinks you can just throw a 4 valve head on and you get instant go...ah no. Carb size, timing, cam duration, header size, exhaust back pressure. All that and a hell of a lot more needs to be figured out before you're going to get the benefit. With the heads we have now most of that is pretty much figured out or at least ballpark figured.

See even the 3 valve I have is still not developed but they're coming back to it because people want the head to race 110 classes. But to answer the question I would buy a 4 valve in a heart beat but I would have a roller rocker as my A-bike. Then I could work the 4 valve until it started catching up. Because I believe 4 valve is the way to go without a doubt. If it wasn't Honda wouldn't be using it in their race and customer bikes.

[swheels]

YouTube - 146 dohc street run (http://www.youtube.com/watch?v=TCQxfokVaVU&feature=related)

haw haw git it

YouTube - 17HP Honda Monkey DYNO (http://www.youtube.com/watch?v=Cag2QwF2KWg&feature=related)
That wrist must have really been hurting.The with that low gear ratio that bike should have been pullin the wheels off the ground all the way up to 3rd.

[funrider]

That wrist must have really been hurting.The with that low gear ratio that bike should have been pullin the wheels off the ground all the way up to 3rd.


Yeah, right, for the perfect condition, must use the third speed, because the power and torque is not given correctly on this video.

[funrider]

Hi,

for crf50 type engine = 17 to 23Hp

DAYTONA 119cc = 17 to 19Hp
TAKEGAWA 124cc = 18 to 21Hp
DAYTONA 150cc = 20 to 23Hp
KITACO 124cc = 19 to 22Hp

for klx110 or YX engine = 17 to 25hp

these powers are at the rear wheel depending on the settings of the fuel, ignition and exhaust.

now for the funny part...the prices

All of this complete engine cost more than 6000 US dollars