400

[Piki]

What about the Big bore kit from Cruzinimage?? I would like buy one Big Bore Kit (466cc), but I am afraid about the quality, If I buy one kit  need I change other things on my Bike? Carbs?
Thank you in advance.

[Dan]

This kit is very reasonably priced, less than £70 on eBay UK. You may think that's too cheap to be any good but there are some good reviews of the same kit on the US SOHC site. Carb changes not necessary, only jetting. I think 466 is the maximum you can take a 400F out to, and from what I have read you lose the chamfer on the bottom off the cylinders so fitting back over the pistons could be tricky.
It's something I may look into later on, maybe.

[ka-ja]

Hi,
    The 400/4 can be taken out to 500cc with new liners, but 466cc is the biggest size that the maker's liners will take before there are heat and weakness problems, a lot of clubman racers used the 500cc size, often made by y0shima in america. As for cruzin image, I would certainly consider them if my Yoshi 460cc pistons give trouble, as they will allow me to clean the bores out.---------Ken

[Piki]

Thank you guys, I had measure the block cylinder this Morning, the worst measure is 51,7mm, I think that I can follow  with the stock cylinder and pistons for the moment(I do 4000km to year with this Bike) in the Future I can buy one Big bore kit and save money.....

Best Regards.