more power

[400exrider5]

i was wondering if it is possible to get more power out of my 400ex with out boreing it out. it alredy has a pipe and an intake.

[jak1389]

get a cam. also better shocks allow you to go faster also. i would suggest upgrading from stock suspension before any serious mods.

[400exrider5]

how hard is it to put in a cam? i have never done it before. thanks!

[jak1389]

take off the head cover, take off old cam drop in new cam, if it is a hardwelded cam you will need hardend rockers, and then re-time it.

[400exrider5]

thanks for the help i think i will try installing a new cam any sugestions to whitch one i might get.

[jak1389]

a hotcam stage 1 would probably be best for you.

[JOEX]

Get a repair manual if you don't already have one.

It's not difficult but there's more to it than what jak1389 posted;)

I agree with upgrading the suspension, well worth it:)

[cals400ex]

i would get a full pipe and either a stage 1 or new stage 2 hotcam. i woudln't get teh stage 3 until you get a higher compression piston.

[400exrider707]

Do and 11:1 standard bore piston and a stage 1 cam. Really wakes the motor up for only about $300 (new parts)

[trx400exxracer]

get a cam and some shochs if your on a buget or just begging get some works or 450r front stock shocks for cheap

[400exrider5]

thanks everyone for your help ill tell you how it gose when i get the parts and install them.

[yfzfelix]

get a rev box if you don't already have one

[kd5sfq]

Try a Sparks timing advance key for $20 bucks...

[4everhonda]

A higher compression stock piston will make a big difference, you will need to get your cylinder honed to have something for the new rings to break in to but thats under $20 to get done. You can still run 93 octane pump gas with 11:1 compression