400ex mods

[dbo005]

i am new to this forums. i just got a new 04 400ex and i wanted to know if i got a 11:1 high compression piston and kept my stock bore. would i have to buy a cam to. also what is a good piston to get and what else would i have to do to run this set up. thanks also i did search but vould not find anything. oh yeah what does it mean when you have to hone youre cylinder

[ridesa02400EX]

you dont need to buy a cam with the high comp piston but you will get a lot more noticeable gains out of the cam and piston combo. ive heard good things about JE pistons. im probably ordering my high comp piston and cam this week

[dbo005]

thanks. do i need to have to do anythin to my cylinder to run a high compression piston. and what are some good nerf bars to get.

[remlapr]

Have you even put a pipe/filter/rejet on it yet? If not I would suggest starting there first before you crack open the motor.


Nerf bars - a lot of people run AC and like them, Arens, X-factor...

[hondarider2006]

I would go with the pipe/filter/rejet and some aftermarket shocks before you do any motor work. Kinda hard to ride it has hard has you have built it if you can't hang on;)

[dbo005]

yeah i got a jet kit and a KandN filter and a hmf full exhaust im am going to try that set up first before i go high compression.

[cals400ex]

honing the cylinder cleans it out and roughens it up. it is important for the cylinder to be a little rough so the rings seal to the cylinder wall. if you don't know what your doing i would just take it to a local shop and tell them you need the cylinder honed out. by the way, i would give them your piston so they can install and gap your rings to your cylinder too.

[02Yellow400]

ive heard of alot of people having a really hard time getting the AC's to fit right. I have pro-armor nerfs. Alot of people on here arent really big on them but i love them. There the most solid nerfs ive seen out there and they fit perfect

[kilabeez0]

wut about DG nerfs? Is $50 plus shipping a good deal for used ones?

[ridesa02400EX]

woah im lost:huh how did this go from talking about engine mods to people talkin about nerfs

[hondarider2006]

he was also askin about nerfs.....:blah:

[kilabeez0]

hey my bad, sorry to get off topic:D

anyone care to answer my question anyway:blah:

[northeast400]

start with the basics first, I also agree about suspension first.