next on the 300ex

[Butters]

ok well so far i have a k&n filter with jet kit, 14t c/s, dg pipe and thats all for motor mods so to say. i am going to port and polish the head this winter and put an oil cooler on it before next summer. does anybody know what else i should do to it besides a 330 kit? i also plan to put on tires i was thinking razr's but if you have any other suggestions tell me. thanks.

[redrider ex]

a 36 tooth on back

[Butters]

that will give it more top end right? if so what will it do to bottom end?

[redrider ex]

but with the 330 kit it won't hurt the bottom end much

well a cam cant hurt , also a larger carb like a 400ex carb would do good. for the cam try a hotcams stage 2 . i have a 300ex with a stage 2 , white brothers pipe and jet kit and kn filter and it is pretty fast now , can almost hang with a stock 400ex, almost.

[mddl961]

get the 350cc from powroll i heard its very good and strong.

[Cannonball08]

You will deffinitley need to take the Rev Limiter out of your quad or you will be restricted halfway into the power.

[GT300]

If you put on a 400ex carb be sure to use a 350x air boot. Also I would get a set of works or any other kind of suspension. A steering stabilizer wouldn't hurt either.

[2k2-300exnj]

junk that dg pipe and get an endine builder cuz if u have the dg sound is obviously no issue 330 bux for the htrick i love mine

[Butters]

yeah i know i should junk the dg but it helps a little and i would rather put my money into a 330 or as some else said 350 hit. what all will the cam do? how do you "fix" the rev limiter? i have heard about it but wasn't sure what all it would help. thanks for the replies

[mddl961]

go to powroll.com for big bore kits and profabatv .com also they have what you needand what you want.

[Buzzsaw]

HondaEXtreme01 where in OK do u live

[Butters]

i live in mustang, right out side of okc

[bradley300]

the best bang for your buck will be suspension. if you dont plan on racing then works will be fine. if so, try elka, pep, or tcs. call the quad shop and they can help you decide what is best for you.

remember that hosepower out of control dose'nt make you go any faster. susp. first, then motor work.

[Ex'r Marlin]

What kind of riding/racing do you do?

I too would replace the DG pipe. I would get front shocks for your 300 (330 or 350) as soon as posible, even before the any other additional mods... You will love the difference!:)

As for Razr's... I guess it depends on what kind of terrain you will be on.

Have fun with your "modded" 300!:) I know I do!:cool:

[2k2-300exnj]

oh yea and razrs hook u wont be disapointed i am getting another pair in 20 inch in a few months

[Butters]

well i wanted to get new front suspension but its so expensive even for works. i know i probably should get new but i will probably just wait til they blow, which how i have been riding lately they probably won't last very long. as for what riding i do i mostly do sand and dirt. i have paddles for sand but i also wanted something else for sand cause i ride at a river so the sand is mostly wet. oh and is there anywhere where you could get used front shocks or something like works or something? does ebay ever have anything good? thanks for all the replies.

[Butters]

i have a question that i was thinking about. how big of a difference like poiwer wise would there be if i bored my motor out to actual 300cc? and if i did that would i be able to bore it out any more or would that be the max???

[Butters]

bump

[phatswinn]

you probably wont get anything from it unless u go all the way... high compression, piston, cam, carb, airbox mod, and a high flow pipe like hmf or duncan, thats all i can think of the get the most outta ur motor

[GT300]

Ebay usually has some suspension for sale, sometimes not even used. You could try a post in the classified forum. Brand new dual rate works with no rezzies are cheaper than all the motor work.

[Butters]

whats the difference between rezzies and without rezzies?

[2k2-300exnj]

with rezzies it keeps the shox from heating up as much and fading making them loose their stiffness...
without rezzies there is nothing to keep the shocks kool

[Butters]

is it worth paying more for the rezzies? i ride alot at the river so usually my quad stays pretty cool.

[2k2-300exnj]

they keep your shox better longer i would get them if you have the dough if not they arent that important

[Ex'r Marlin]

I think the price of the rezzies are reasonable, but I do not feel it is a necessity to have the rezzies.

The aftermarket shocks should still perform better than your stockers... Even without the rezzies.:)

Note: Remember, some shocks have the option to add rezzies to them later on if you decide you want them.:cool:

[96300ex]

i have a question that i was thinking about. how big of a difference like poiwer wise would there be if i bored my motor out to actual 300cc? and if i did that would i be able to bore it out any more or would that be the max???


well, the saying is true that there's no replacement for displacement. But another well know tip from the hot rodding world is take care of your heads and inductuon before you mess with anything else. this applies to a 300 exspecially. the 300ex head flows pretty winmpy for a stock motor. you put a 330 kit on there it's like trying to breath through a straw. as far as motor goes, here are my suggestions: 1.)get a good exhaust system with a header 2.)larger carb and 350x boot 3.)a good port and polish 4.) bigger valves (real good gain there) 5.)while you're getting those valves put in have them give it a 3 angle valve job... do that and i garantee you will smoke 11:1 330's with stock heads. lots of companies like to market their 330 as a bolt on mod, but it will only give you real good results when combined with other internal mods. Go spend 50 buck and get a copy of desktop dyno (made for cars but works for any 4 stroke), get a hold of some flow bench data and you can build a computer model beast without actually buying any parts. It's the easiest way i know of to figure out what mods are actually the best. Also fun to just play around with, i built a 800hp 514 stroker V8 for my mom's lincoln towncar on the computer :D

[Butters]

how much for bigger valves??

[96300ex]

i dunno, like 40 bucks a valve and 200 for labor i would think... honestly i don't know. look around some, try profabatv.com they do good work. any local machine shop should be able to do it if you get them the valves

[Butters]

how hard would it be to put the valves in yourself? i hape to get my head port and polished this winter. that should help some.

[96300ex]

sorry dude, oversized valves take more than time and a dremel tool... the seats need to be cut to accept the larger valve (that's where you get the power, the valve and the seat are larger and flow subtantially more) machine shop needs to do that one...

[Butters]

yeah i don't think i will put different valves on for awhile. what shocks can you add rezzies to later?? and about how much?

[GT300]

Works and Elka all high dollar shocks come with rezzies. It costs about $100 I think. Correct me if im wrong.

[Butters]

yeah i just went to Little Sahara yesterday and man it makes me want to run out tomorrow and buy new front shocks. thats the only thing i had a problem with. i thought i would have a problem with the motor bogging down but i never had a problem. just now my arms are sore from the whoops cause my front shocks suck major. what else would help cut down on this besides front shocks, even though i plan on getting new ones.

[jwisniew]

do u need to have a bore kit in there to get bigger valves and port and polish? any rejetting after these?

[96300ex]

I've never heard of valve shrouding problems with bigger valves. and anything that lets your motor breathe better needs rejetting.

[Houser Cannondale]

a good steering stabilizer would help out alot in the whoops. i hear pep or denton both make good stabilizers.

[Butters]

what does a steering stabilizer do and how much would it cost??

[GT300]

I am pretty sure that they take out the bumpsteer while riding. Like when you ride down a trail and you hit a little rock or root and it turns the bars, this eliminates that. They go for around $135.