Piston clearance RD350B AIRCOOLED

[RD350NL]

Hi

Can someone tell me the correct piston clearance? Need to bore the cylinder to the next oversize. How much MM clearance should there be?

Thanks

[Brad-Man]

That would depend on what brand and type of piston you use.

[RD350NL]

Im looking to use the pistons supplied by Yambits

https://yambits.co.uk/rd350-piston-kit-100mm-p-53222.html

[1976RD400C]

The factory manual says .04mm (.0016") but .05mm (.002") adds a little safety factor to prevent seizures. Bore it to a size that will allow the last .002" be done with a good hone to remove the bore tool fracture marks and be left with a good surface.

[m in sc]

.002 is fine on those. the clearance is on the box usually.

[irk_miller]

I send the jugs with the pistons to the machine shop and everything comes back ready to install with clearances already sorted.