WR 400 Rebuild
Posted September 02, 2009 - 10:41 AM
I need some advice. I just picked up a 98 WR 400 that was sunk in some water. The bike was cheap and I need a good project. So far I have removed the top end but the bottom end is bound up. I am going to split the case and dig deep. While I'm in there I want to do some mods. I can't seem to find difinitive answers about my '98 from other threads, so here goes.
1. Is it worth it to go with the 426 rod?
2. Does anyone know of a good source for rebuilt cranks?
3. What years can I swap parts from, ie: piston, cylinder, auto decomp. cams?
4. Any other suggestions of stuff to do?
Posted September 03, 2009 - 11:36 AM
Posted September 03, 2009 - 09:27 PM
Posted September 06, 2009 - 07:35 PM
thanks,i have a clymer manual, is that sufficiant? will the solvent bath damage any of the bearings?
You can probably rebuild the engine with just the clymer manual, but the shop manual will provide more tolerance and maintainance information than the Clymer.
A solvent bath will not damage bearings, but it may damage seals depending on what solvent you are using. I've used mineral spirits on some rubber parts without damaging them. Keroseen would probably be the best if you are going to clean plastic/rubber parts with it. My current shop is in my basement and I don't want fumes in the house so I use a soap based industrial cleaner which is safe on rubber, but this stuff doesn't clean as well as petrolium based products.