I have had rockers with the flat spot click on me. I forgot to mention
it last night. You can find which one has a flat spot by using a feeler
gauge and when the engine is cold, just as you would when adjusting the
rockers, slid it between the cam and rocker if it catches then you have a
significant flat spot.
Bill
> ----- Original Message -----
> From: "william colford" To: ; Sent: Saturday, January 11, 2003 2:15 AM
> Subject: Re: [2cylinderhondas] ticking
> > Hi Colin;
> > I agree with what Miles is saying that your problem is most likely
> a
> > warn rocker arm shaft and not the housing. If the housing is warn where
> the
> > shaft rotates then other things are wrong with the housing too. Normally
> > the rocker shaft wears, which is supported by a shinny area on the warn
> > shaft, both ends not just one. And, it is on the top of the shaft and not
> > the lower side. Although I have seen rocker arms ground smooth (they go
> > flat right at the center of the riding surface to the cam see the attached
> > picture) which caused problems too. The "popups" Miles is referring to
> are
> > Lash Caps like the ones used on the Ford 289's with solid rockers. Tim
> > Mings
H_mings@...
has reground cams with lash caps that really puts
> > zip back in your motor.
> > But back to your problem, if it is the rockers, then you can have them
> > hard chromed and reground.
> > If still will not adjust then remove your housing and have the bottom
> > surfaced removing 3 thousands and use a thinner gasket to bring the rocker
> > arm closer to the valve stem. Unless there is an adjustable rocker arm
> > available we are forced to make things work.
> > Bill
> > ----- Original Message -----
> > From: > To: > Sent: Friday, January 10, 2003 9:17 PM
> > Subject: [2cylinderhondas] ticking
> > > If the valves are too loose: maybe someone has reground the cam and
> > > didn't install popups on the valve stems.
> > > If 1 valve is tight after you adjust it, and it happens repeatedly,
> > > you are having a problem with the valve seat. It is pounding into the
> > > head. This sounds like a (intermitant sometimes) wrist pin tick. You
> > > will need a new head, generally. The seats are cast in, and used
> > > heads are easy to get (have 20).
> > > The rocker shafts wear as soon as you put them in, the aluminum is
> > > very hard. Don't waste your time machining parts for the casting,
> > > just get another one. I'd give you one but I just tossed out 30 of
> > > them some years ago as they never sell. In a couple hundred engines I
> > > built, I neved detected a worn out rocker bore.
> > > Miles
> > > --- In
2cylinderhondas@yahoogroups.com
, "Colin "
> > > wrote:
> > > > Has anyone had any problems with a rocker shaft that wore out the
> > > > bore in the head. I'm still searching for the cause of my engine
> > > > ticking problem. I can't get the valves adjusted right because the
> > > > rocker shaft has movement up and down. I plan on having an insert
> > > > machined into the head bore to stop the play. Is this a common
> > > > problem?
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