will it fit in my frame??

[hardkoratvmxr]

What is the biggest dirtbike engine that will fit in my 300ex frame?

Will liquid cooled motors fit? If so where will i put the radiator? and i will have all the suspension and other neccesary mods already done to the quad before the motor goes in. If needed I cna fab up soem brckets for the radiator if the radiotor will not bolt up.

I want something faster with a lot more power to blast me ot of the corners on a mx track. That is all it will be used for. I heard ktms are good engines, but what about something else. I only want a fourstroke so no need in asking about two strokes.

thanx for your input

[Pappy]

ive seen 300ex's make more then enough power. even more then can be had by doing all that work to get the bike engine in there

[hardkoratvmxr]

yea i know the possiblities but i want something that probably noone else will have but if i cant find a reasonable dirtbike engine i will juss make the 300ex one better.

[bradley300]

if all your doing is mx, go with a crf250r motor!

[440exnacsracer]

if all your doing is mx, go with a crf250r motor!

yea, those motors do rip....dont they rev to around 13k?

[roostin_dale]

bad idea...a bike motor will rip the 300ex to shreds! Just my 250x stroker motor tore up my frame and it had gussetts...

Ive seen a yz426 motor in one, but i can say it wont last for long....your best bet is a hwole new bike!

[kuba1506]

i've often heard of people putting 350x three wheeler motors into a 300ex frame. I think they even make a kit where it gives you new motor mounts to bolt up never seen one but i heard they rip

[bman9]

Ive seen a yz426 motor in one, but i can say it wont last for long....your best bet is a hwole new bike! [/B][/QUOTE]

ive seen someone do that two for ice racing but its still running