that head will be good for just about any sort of riding/racing.

It's those who are in a points chase or have the deepest wallets that will get the good stuff.



This is all suppose to be for fun and tb has made sure that everyone can do that at a reasonable cost.

what is>>> yes!!!

 

absolutely. Thats why i get excited when i hear about new things TB comes out with because i know they will be affordable to the avg guy. having a discount on their parts doesnt hurt either =)

 

killer110.... when you get this running let me know I have the same head/cylinder but with tb28mm carb. what carb are you running?

well i had the molk 26mm that comes stock but the intake on it does not mount up with that new manifold you get with the head kit (it's triangular and the new manifold comes with a round boot). So...for now I am borrowing my friends oko 26mm until i get a new one which will probably be a vm 26 or tb28

 

the head comes with a manifold?

 

Over lap is when both valves are open at the same time.



If the cam is phased in properly and the rest of the engine is tuned right opening of both valves at the same time can aid in cylinder scavaging which can lead to MORE HP.



That's the biggest problem with the CRF based style head is that because of the stud placement and rocker arm geometry you can't change the angle of the valves and put them at a shallower angle.

So in the interest of making more power, companies install bigger valves while in theory it should make more power, sometimes you lose.



Too big a valve can lead to clearance issues ( against themselves depending on cam profile ) The valves themselves are heavier which means stiffer springs which take away HP.



This head will be fine, but there are more ways to make HP than to just stuff bigger valves in the head.

I was worried about the newer heads for the yx and ksr/klx.The ksr/klx head with the 34/29 is what i'm gonna get.But i never thought about the valve over lap issue. I have the v2 race head and i love it.But i'm always looking for more.

 

the head comes with a manifold?

just to clarify a few notes/questions



the tb 300 cam is MFG recomended AND we recommend this unit for this head ,we ran the 300 in the lifan and yx140 heads with very good results ,Infact our 146cc dyno was the first import to top 15hp and it ran the tbwo300 cam



on the intakes

you can get this head with / with out cam ,intakes carbs ect what every way you want we have it set up



if you have a china flang intake our adaptor boot will allow u to run a spigot mount type 24-28mm carb



im trying currently to find a de-comp type cam to run in this head



as far as the roller rockers go , agreed that there a better set up ,but if you saw this 160 w/ 30/23.5 run you would be impressed

 

I just ran it today, but not for very long. It was too cold today to really run it and I was having oil cooler issues. Just got to heat cycle it once and ride it for a min. Felt really good with more snap but I didn't get to rev it out. I probably won't get to ride it again until mototown next saturday. i'll let you know more then.



and to answer your question boonacka, like crkid said you should use this cam. no reason to use the stock one.

 

as far as the roller rockers go , agreed that there a better set up ,but if you saw this 160 w/ 30/23.5 run you would be impressed

What motor do you think this would be comparable to?

 

Finally got to ride the thing at mototown yesterday.



I REALLY like this new setup. It has a very smooth delivery but still has a lot of power. Way more power than just the stock head and 160 kit. It pulls longer and harder than the stock head. It doesn't have that snap/jerk like my 170 V2 but still has plenty of power. I think some of that my be because I don't have a lightened oil slinger on the 160 but on the 170 i do.



I ran it with a tb28mm carb with the jets that came in it and it ran flawlessly. No bogs, burps or anything wierd. Definitely an awesome setup. I would recommend it to anyone. I might even like it better than my 170v2 but but i haven't decided yet. Man it feels good when you make a good purchase! this is the most rideable fast motor i have ridden.

 

good to hear killer. I know what i want for christmas.

 

some pics in action from saturday at mototown

 

Glad to see this setup works well, Just did the 160 for a customer but he didnt go for the head. Was hoping to see how it worked. Which I guess I did saturday. You were ripping on that thing.

 

yeah, i love the setup. it's such a smooth ride

 

nice pics. so now that you've gotten to bash it, how would you compare it to the old 146 setup?

 

nice pics. so now that you've gotten to bash it, how would you compare it to the old 146 setup?

I wish i could but i have never ridden that setup. before this it was just a stock 140 and then the 160 with the stock head.

 

sounds awesome! gonna have to change your name to killer160 now!

 

I wish i could but i have never ridden that setup. before this it was just a stock 140 and then the 160 with the stock head.

Man I wish I talked to you there. My 10" I was riding is a 146 w/sgr head. #582 Should have let you ride it or vice versa to compare.

 

Man I wish I talked to you there. My 10" I was riding is a 146 w/sgr head. #582 Should have let you ride it or vice versa to compare.

yeah that would have been cool. I do remember seeing you. you were motorin pretty good on that thing too

 

yeah that would have been cool. I do remember seeing you. you were motorin pretty good on that thing too

Thanks I give it my best shot.

 

i should save up for this valve head to see how the application works on the street

im running a lightend slinger and a irk so my 146 revs to the moon



is it possible if i can use my akunar piston with this valve head?

 

according to TB the akunar piston will not work. TB sells the head with the proper piston as well.

 

is it that kit or it comes mandatory with the valve head

 

if you look at the TB site, it will show the different packages.



basically, to run this head, you gotta have the proper clearance. they sell a head upgrade kit for the current 146 motors which also includes a new piston.

 

this head rocks.... I finally got mine dialed in this weekend... it'll compete with v2 heads.. i would say!

 

even a yx160 with the v2?