IF I PUT A 330 OR 370 BIG BORE KIT ON MY '98 300EX WOULD IT EVENTUALY WEAR AWAY ON MY ENGINE AND AT ONE POINT MESS IT UP COMPLEATELY?

 

All bige bores are time bombs waiting to go off. You got to think you are running race gas higher compression ratio than stock. things are bound to go wrong. But when they are built and running they are a blast especially when people dont know what you are running

 

Well I have a 330 big bore kit and have had problems. I am debating wether they are worth the troubles. I think they are but you should have the bottom end completely gone through and get a much stronger aftermarket rod. My 330 has a good amount of power and will run with stock 400exs easily.

 

I have a 250x. I am wondering if i should fix my 250x up alot. or wait a while for a 250r or 400ex. I need new suspension bad and osme more power. I wait a while.I really love to jump. I would love to maybe even race. just for fun nothing seriuos though. What do u think i should do? I have a very small budget and am only fifteen so a 400ex is out of the question.
thnks alot

 

DIEHARDRIDER,
I AM ONLY 14 AND I DRILLED A 2INCH HOLE IN MY AIR FILTER LID(FREE) AND REJETTED MY CARBURATOR(MY FREIND DID THAT FOR $10). I ALSO GOT A K&N FILTER($44) AND NOW IT OUTRUNS A WARRIOR VERY EASILY! SO IT DONT TAKE MUCH TO MAKE IT FAST. YOU COULD ALSO PUT A 14 TOOTH FRONT SPROKET ON AND THAT WOULD ALSO STEP IT UP A NOTCH!

 

Hey man, Break out the Lawn-Mower and do some work!!! I'm 15 too Mods below

 

The lawnmower is my source of money.
Ive though about getting exhuast but ive heard it doenst do much for a 4 stroke i have a K&N but i checked and my jetting was good. THe biggest thing is suspension. Im getting really tore up jumping.
thanks for the replies