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View Full Version : 390cc big bore kit?


Rastus
06-09-2002, 09:54 PM
Would FST's(FourStrokeTechs) 390cc be a good kit to buy?
Im not worried about it getting to hot b/c of my oil cooler coming.
Would it be worth the time and money invested?
250xman
06-09-2002, 09:58 PM
how much are those monsters? sounds cool. maybe i'll get one dependign on how much they are.
Rastus
06-09-2002, 09:59 PM
Not cheap,lol.
But man, think about the power....VROOOMMMMM!!!
250xman
06-09-2002, 10:00 PM
well i guess you get what you pay for huh?
Rastus
06-09-2002, 10:02 PM
I guess....*pondering*.....
390X.....POWER......
waits 20 seconds, and screams
ITS WORTH IT!!
user101
06-09-2002, 10:24 PM
the bigger the bore u go the higher the maintence is on them
honda250xrider
06-10-2002, 08:31 AM
yeah but just think how awesome that would be to have that would be like a whole new machine
Rastus
06-10-2002, 10:17 AM
Yep...
I think ill go with the 330 kit first though.Ill probably have to get an oil cooler, and a oil tank to cope with the heat.
JabberJaw
06-10-2002, 12:23 PM
If you are considering buiding the engine up, you should know how much money you want to spend. If you have to have a stronger crank, hardened rockers, valve guides, stronger clutch, and sometimes transmission gears.

It can get pretty expensive if you want to go all the way with the motor versus just a bore kit.
TRX_Thumper
06-10-2002, 12:46 PM
I know a guy with the 380 kit which is the same as the 390 cept he got the 380 so he would have a couple overbores left..to say the least its awesome.....a raptor doesnt even come close....he has no problems without an oil cooler....