Honda-SOHC

SOHC.co.uk Forums => CB350/400 => Topic started by: Andrewd2667 on January 22, 2017, 11:09:18 PM

Title: Blown piston - best way forward
Post by: Andrewd2667 on January 22, 2017, 11:09:18 PM

The no 3 piston has blown with what looks like piston ring split and damage, along with excessive carbon.

How much damage to barrel - before you have to re-bore?

looking at all the pistons is it a case of replacement for all?

Title: Re: Blown piston - best way forward
Post by: kevski on January 23, 2017, 07:59:46 AM

Any bore damage will require a re-bore, there is no other fix!

Title: Re: Blown piston - best way forward
Post by: Bryanj on January 23, 2017, 05:29:39 PM

Used to be common on 175/250 twins if pushed hard from cold