Winter Rebuild, Lets Hear Your Input

[pods_BMOC]

Ok, i have a 2000 400ex the engine is bone stock and never touched,... i want to do a full rebuild, what do you recommend? I am looking for POWER!!! i want torque, i am a woods racer. From personal experience what is best? budget of $500

[tri5ron]

slip-on exhaust, K&N or UNI filter, Outerwears, re-jet, Sparks Advance key, and drop one tooth on the primary sproket.

That will eat up your $500 budget pretty close,...
will give you a reasonable increase in power, and your torque will be rather impressive on a stock bore bike.

on edit-
oops, didnt see that you had some of those things in your sig.,

so just add the Sparks key, sprocket, and maybe add a cam to the mix, and you should be happy with it, as well as it will still be a very dependable and durable machine.

[pods_BMOC]

I was thinking of boring it over a few? is that a good idea? What do i need for that?

[dustin_j]

Originally posted by pods_BMOC
I was thinking of boring it over a few? is that a good idea? What do i need for that?

Last winter I bored mine to a 406 (next size over stock) and put in an 11:1 piston with a hotcam stage 2. The power increase was very noticable and worthwhile. (I also run no lid and an outerwear prefilter). Hope this helps.

[hypersnyper6947]

I have a stage 2 cam for sale almost brand new maybe 10hrs on it max, $85 shipped to your door if you want it.

[Brauap]

Power.. hmmm..

The engine rebuild would probally take you to your limmit, or close to it. So, maybe drop a sprocket tooth, 406/416 bore kit, or little stuff you want.