[connerb0693]

96 300ex, full hmf exhaust, jet kit, k&n filter, and amr hot coil and cdi box(just to see if they did anything). looking into what will be the next best bang for the buck modifications. port and polish? high compression piston?

 

[300ex power by monster]

yah get p&p and bore it to a 330 u have a lot of power

 

[Redracer]

Jon, we have gone through this a million times. The 330 is a new jug that you bolt on, you cannot bore a 282cc motor to 330cc. There is not enough metal on the stock jug. Boring it out 3 over would add like another 6cc.

Look into getting an aftermarket cam, that will compliment you CDI box very well.

 

[TRX2fiveO]

Agree^^^^Also a good Port will amaze you.

Not to mention if you decide to go with the 330 kit your case halves will have to be machined to fit the larger cylinder Sleeve. Once you do that you can't go back

 

[connerb0693]

thanks, im trying to avoid boring it over though, heard that makes them run to hot and unreliable

 

[TRX2fiveO]

It will make them run alot hotter than normal. I would maybe go with a std bore 11:1 piston kit if you do not want to bore. Just use a bead hone to crosshatch the cylinder walls and you should be good to go.

 

[300ex power by monster]

yah so u run hotter but u get power to lol

 

[mud99]

You can add a external oil cooler to your quad that will make it run cooler.

 

[300ex power by monster]

i have a 330 with a pipe and jet kit i never have heat issues

 

[Redracer]

Jon, you already told us that your quad runs hot as all hell and It smokes like a chimney. A hot running motor is being robbed of tons of power.

 

[300ex power by monster]

ok u got a prob with a smokeing bike red sorry if it dont approve of ur standers and sorry if u think i am a kid whoo dont know crap

 

[Redracer]

A properly running quad does not smoke like yours does..., I'm basing everything off of what you have told us. Your quad is bored 3 over, that does not make a 330. Your dad has even said that you guys don't know for sure what is done to it.

 

[300ex power by monster]

no the moter has a new top head and i know i have abad value

 

[mud99]

no the moter has a new top head and i know i have abad value

I hate to say it but if your bike has a new top end something is badly wrong with it. 2 strokes dont smoke that bad

 

[300ex power by monster]

no the guy we bought it from put a nehead on it and it was a 330

 

[Redracer]

no the guy we bought it from put a nehead on it and it was a 330

When did he do that?

 

[838XCracer]

If u look around a 330 kit is cheap. Also web cam's make some killer cams. We run a web cam with a stock 298 bore cylinder.Also a 400ex carb will bolt right on,also open up the air box.Keep the piston at 11:1 like was said. Any bigger will require race fuel and won't be as dependable. This combo will last a very long time.And will produce some major hp from a 300 cylinder. We also run 3mm over Kibble White valves and oversized springs. A P&P is a must.

 

[daniel_300ex]

no 4 stroke should smoke period i bet the previous owner lied and its still on its stock bore

 

[400exrider15]

no 4 stroke should smoke period i bet the previous owner lied and its still on its stock bore

I think a P&P, Web Cam, Kibblewhite Valves & Springs, High Comp Piston, 400ex carb, clamp on filter w/ outerwears. should be pushin out alot of ponies.

 

[300ex power by monster]

no mine 330 kit was put on 3 years ago and the guy i bough it from never changed the oil but 1 once a year and yes all 4 strokes somke evan a brand new one does