CaptCatFish said:
Thank you HuskyRips!!
I know I am gulity of trying to solve a problem before I have it but I cannot find oversize piston kits for the 260 anywhere. I have not called all those Husky dealers suggested by TT friends however I am curious about alternatives when the inevitable top end job is necessary (Anybody venture a guess about the comparative life span of a 2-stroke air-cooled engine vs water cooled?)
Which brings me to a theoretical question. Since the stroke of those era Husky 250's and 260s are the same (64.8) and the only difference is in the bore (70.0 vs 71.5 respectively), when its time for a fresh top-end , why not re-sleeve the cylinder to accept the 250 piston? It seems to me that the probability of finding complete 250 piston and gasket kits in both original and oversize bore is so much higher than finding the same for the 260 and may justify the additional expense.
Any comments and words of wisdom are greatly appreciated.
Jim
Hello again,
yes the watercooling means tighter tolerances and theoretically better performance + service life,
Husky's tend to have MUCH better quality engine internals than the japanese offerings,
years ago Wiseco quoted 3 x piston life over stock japanese,
Mahle who were OE for husky / cagiva were 3 x Wiseco.
so I don't think you need worry too much..,
with watercooling came nikasil coated bores( like chrome plating but better at heat dispersal ) over long hours you could wear through the lining ,(less likely with good oil and clean air filter) then it needs replating , this is not cheap so actually going down to 250cc and the inconvenience of restoring the correct jetting may mean its as cost effective to recoat at 260cc , or possibly see if 300cc is viable , as I believe the WR 300 is on the same cases as your 260,
I hope that helps,
Charlie