Honda-SOHC

SOHC.co.uk Forums => CB350/400 => Topic started by: Lobo on January 08, 2013, 02:28:20 PM

Title: 750K2 / 400F Caliper pistons interchangeable?
Post by: Lobo on January 08, 2013, 02:28:20 PM

I've a badly pitted 400F caliper piston, and a serviceable '750K2 piston.  They're dimensionally the same (externally).... but the '400 piston has a blanking plate in its end....versus the open ended 750 part. The 'blanking' plate rattles, though is captured in some way that I haven't yet fathomed.  That said, I don't think I can transfer it across due the 400 piston appears to have a thinner wall where this plate fits.
Any comments on whether I can use the K2 piston... and if I have to somehow mimic this blanking plate.
Cheers...

Title: Re: 750K2 / 400F Caliper pistons interchangeable?
Post by: Bryanj on January 08, 2013, 02:31:57 PM

Yes you can but you may get the dreaded brake squeal due to no nylon washer between pad and piston

Title: Re: 750K2 / 400F Caliper pistons interchangeable?
Post by: hairygit on January 08, 2013, 02:36:08 PM

But, on the plus side, if it squeals you know it's working/ not siezed!  ;D

Title: Lobo
Post by: Lobo on January 08, 2013, 02:38:35 PM

Thanks Bryan... Assuming then OK to simply install the open end against the pad.
Cheers

Title: Re: 750K2 / 400F Caliper pistons interchangeable?
Post by: SteveD CB500K0 on January 09, 2013, 10:45:09 AM

Kevin400F (Kevin Hunter) on the .net site makes these from phenolic resin.

Quite a few members have used them - some from here!

Steve