SOHC.co.uk Forums > Project Board

My 750F2 project.

<< < (18/24) > >>

Nurse Julie:
Agree Roy, that piston to bore clearance is massively over the top, like you say, 1 thou inch maximum on most aftermarket and down to 0.6-0.8 thou inch on genuine Honda pistons.
At 0.0025" that's almost old British bike spec where they use a lollypop stick to measure the clearance 😂😂😂

Cb750r:
These are 2618 forged pistons, which require more clearance than other piston materials.
Also according to the measurements required which is .5” up the skirt this is closer to. .0020 measurd conventionally at the base of the skirt
. I’m not really debating the spec set out by the piston manufacturer. I am more concerned about the lack of workmanship and my Un usable cylinders.

Bryanj:
Roy, i disagree about piston sizes. If using genuine Honda, or even aftermarket i personaly have never found a measurable difference from quoted size, as to the big bore ones i dont know

royhall:
That's fair enough, if your pistons are all the same size then the bores will be as well. But it would be a poor job not to check and just trust them. I've had two sets of aftermarket pistons that have been slightly different, they were machined to suit. Never had a difference on genuine though.

Sent from my Pixel 7 Pro using Tapatalk

Bryanj:
Years back we bought our pistons from a man on a van and his were all Art who i believe made the o.e. honda

Navigation

[0] Message Index

[#] Next page

[*] Previous page