eric or rich, 98 wr400f needs some new life!!

Joined
Jun 20, 2005
Messages
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#1
hi i'm from singapore, i saw eric's forward motion so i decide to give it a shot!
i'm thinking of using a 426 cylinder and do a +2mm bore to bump it up to 444cc.
any other mods i can do to the engine to give it a new life?
btw do you guys have a new 426 cylinder new for the rebore.
just let me know the price of all the sugested mods cos i really need to make it more competitive cos will be taking part in some local race in the upcoming months!!
thanks!
 

Eric Gorr

Engine Builder
Joined
Jun 29, 1999
Messages
384
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9
#2
You need to switch to a 426 crank because the piston pin size is larger on the 426/444 piston. Also you need to start with a 426 cylinder because the stock 400 is too thin.
 
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