400EX Step by step motor build

[bkb88]

How about putting together a list of specific specialty tools used & a few pictures of tools required? This is an invaluable source of info for anyone wanting to do a full overhaul!

[rubbersdown]

Originally posted by bkb88
How about putting together a list of specific specialty tools used & a few pictures of tools required? This is an invaluable source of info for anyone wanting to do a full overhaul!

There really are no specialty tools required except for a flywheel puller if your taking it apart and you can get that on ebay for like $10. You dont need a case splitter and you can sweat in the crank and bearings with a freezer and either a torch or an oven so you dont have to have a press. Its really just sockets, wrenches, screwdrivers and a torque wrench. ntn special really.

[bkb88]

Thank you for clearing that up! Definitely feeling more confident about rebuilding a 4-stroke bottom end if the time ever comes.

[Scro]

I added a link to the "Popular threads" sticky.

[rubbersdown]

Originally posted by Scro
I added a link to the "Popular threads" sticky.

Sweet, im stickied!
thanks

[Ian400ex]

Thanks for this, it's always nice to SEE what you are going to do.

[400exmxrider15]

What do you use loctite thread locker on?

[gbettner]

I just did a complete top and bottom end rebuild as a side job for some kid who toasted his motor using ONLY this sticky thread. It runs great with no issues. Thanks for such a helpful informative thread, you've really helped me out a ton!

[2001400exrida]

great write up!

I wish i would have had access to this when i was doing my build.

The only point i will make is to be sure to put locktite on the cam sprocket screws. One of my screws fell out while running and it caused all sorts of havoc!

1 head, valve cover, and cam chain later, and i'm back up and running, but it was an expensive lesson, lol.