Wr400 wiseco 13.5 piston


4 replies to this topic
  • flyer05

Posted November 19, 2008 - 03:19 PM

#1

Hi, I did a search but did not find what I was looking for. Can I change the stock piston with a 13.5:1 Wiseco piston ?

part# 4650M09200

  • flyer05

Posted November 21, 2008 - 02:53 PM

#2

anyone ?

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  • Thermos O flask

Posted November 22, 2008 - 03:44 AM

#3

I put a 13.5 wiseco piston in a mates wr450 (YZ cam and pipe)and he loves it.I'v got one for my wr400(YZ timing,yoshi) ready to pop in(it does say '99yz on the box but should be ok.

  • flyer05

Posted November 22, 2008 - 01:18 PM

#4

Okay got the piston kit in hand. Do I have to hone or not ?? The instructions say to set the clearance as printed on the box ? Hmmm also says not to ball hone it.

  • Mutu

Posted November 23, 2008 - 10:03 PM

#5

Okay got the piston kit in hand. Do I have to hone or not ?? The instructions say to set the clearance as printed on the box ? Hmmm also says not to ball hone it.

If you can still see hone marks on the cylinder, I wouldn't. :bonk:




 
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