just got a 1984 ns250r mc11. it needs a front piston. I need a parts and service manual. Can't seem to find anything on line. I live in florida so any help would be great!
From what I have been told the NS400r pistons are unavailable now even from Honda.
So good luck with the search maybe worth having a chat with Jamie ( http://www.dreamgate.ne.jp/nsr/index.html ) as he is out in Japan and maybe able to put you in touch with some one he can source you some pistons.
can't seem to find any part#s. found ns400r piston part#s, but i don't know if they are the same? I'm going to look into getting pistons made or put on cr125 jugs&pistons if bore&stroke are the same and don't run the power valve.
try www.ns400r.co.uk - there is a parts list on there, from the Honda microfiche, there is also a forum and if you put 'piston' in the search you'll see it's been discussed a lot!!! Solution vary from geting 64mmpistons and reboring/replating, to CR125 barrels and pistons (not seen one of these on the road yet...but I know of 2 being made, one is quite near me...
You can get B grade NS400 pistons from David Sliver in the UK, but the 400 is a 57mm bore and the 250 is (I think) a 56mm bore. But you may find an NS400 barrel and piston on ebay, that would be the cheapest way to get the thing running.
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