Fw: 600 noise

[mterrens]

I put another recording of my Coupe's noisy engine on my website.  I recorded the Coupe going from a standing start to 4th gear, ending in a 3500 rpm cruise.  The sound is here:
www.honda600coupe.com/accelerate_to_4th.wav
Miles has heard it, and made the comments below.  He suggested I reprint his thoughts here.
OK, doctors, any second opinions before I operate?
Thanks,
Steve

[dealadayray]

Hi Steven;
    It sure has the ring of a rod, but I wouldn't hold out for the lower end, it may be the upper end of the rod.
But the best bet is the rod.
Bill

> ----- Original Message -----
> From:
> Steven
> Michelsen
> To:
> Honda group
> ;
> 2cylinderhondas@yahoogroups.com
> Sent:
> Thursday, November 06, 2003 6:17
> AM
> Subject:
> [anzhonda600owners] Fw: 600
> noise
> I put another recording of my Coupe's noisy engine on my
> website.  I recorded the Coupe going from a standing start to 4th gear, > ending in a 3500 rpm cruise.  The sound is here:
> www.honda600coupe.com/accelerate_to_4th.wav
> Miles has heard it, and made the comments below.  He
> suggested I reprint his thoughts here.
> OK, doctors, any second opinions before I
> operate?
> Thanks,
> Steve
> ----- Original Message -----
> From:
> Miles
> Chappell
> To:
> Steven Michelsen
> Sent:
> Wednesday, November 05, 2003 10:15 PM
> Subject:
> Re: 600 noise
> (after hearing the original recording)
> sounds like small end rod knock. You can't
> hear the chain - ever, and you can't bend a rod unless it punches a hole in > the cases. Typically in 3rd gear @ 35 mph there is piston slap noise which you > can't do much about. Please record the noise at idle and send > it.
> (after hearing the sound posted above...)
> sounds horrible ! I'd tear the top end off and
> inspect stuff. First off, if the valve clearance on one valve becomes tight > repeatedly it means the seat is pounding into the head, it only takes about an > hour to dismantle the top end. Lots more to reassemble, but get new gaskets > & seals before tearing it down.
> How far to go reflects what you find as you
> go.
> If you get the head off and the seat is beat
> in then you could stop, but you may find the center roller is worn. It is > normally 3" diameter. I would personally tear off the cylinders and check > rods, when you get the head off see if the top of 1 or both pistons are > missing carbon deposits at the edges. This means the piston has been hitting > the head. If this is the case you will need a crank. You can call me before > you start or as you go.
> The other thing I would do would be to remove
> the spark plugs, then shine a flash light inside below TDC, use a 17mm wrench > to rock the crank pulley, if it rocks and the piston/s doesn't move, you may > have bad crank. (You can post my comments on the group if you want alternate > input) > To > unsubscribe from this group, send an email > to:
> anzhonda600owners-unsubscribe@yahoogroups.com
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