Queston: honda Motorcycles, engines free running or not.

Discussion in 'Motorbike Technical Discussion' started by Jelly, Nov 12, 2003.

  1. Jelly

    Jelly Guest

    aside from the obvious , when chains snap or derail and jam, and anything can

    are most honda's non -interference engines?. Pistion > Valves.

    I have CB750k6 SOHC4 and CB750 NH- 1993 DOHC4 and nx250.

    i was just curious.
    thanks for any help or direction, did massive search on line to no avail.

    Jelly the aby normal.
    Jelly, Nov 12, 2003
    1. Advertisements

  2. Jelly

    JS9 Guest

    when chains snap or derail and jam....
    I'd say no, the valves will kiss the pistons. Counter opinions welcome.
    JS9, Nov 12, 2003
    1. Advertisements

  3. Jelly

    Steve H Guest

    Surely with the compression ratio's bikes run at and the comparatively
    larger valves than cars, it would be pretty rare to find any bike that is
    non-interference? Certainly with my Land Rover Discovery TDi it has a
    camshaft thats belt driven with pushrods to the rocker arms. If the belt
    snaps, pistons & valves will meet but the worst damage is usually a bent
    pushrod or two and maybe some broken rockers OTOH most OHC cars these days
    bend valves and snap cams if the drive belt/chain fails and I'd expect the
    same with any OHC or DOHC bike engine.

    Steve H
    Steve H, Nov 12, 2003
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.