A trick I used a while back was to regrind the cam, and then hard chrome the rockers to build them up and place .015 lash caps on the valve stems. Makes for a very quiet running cam box. But you also have to bore them cylinders out and use some of Mike O'Conners 1.0 over pistons. Making the cylinders as stright as possible will keep the piston slap down for a long time.
Bill
> -----Original Message-----
> From:
> 2cylinderhondas@yahoogroups.com [mailto:2cylinderhondas@yahoogroups.com] > On > Behalf Of > Matt K.
> Sent:
> Friday, May 16, 2008 6:25
> PM
> To:
> 2cylinderhondas@yahoogroups.com
> Subject:
> Re:
> [2cylinderhondas] Re: new camshaft
> roger white wrote:
> > I am
> > trying to improve the smoothness at idle and maximum horsepower
> > without
> > extra engine noise. I would be able to use a low time used camshaft that was > > close to new specifications on measurements of cam journals and lobe > > dimensions. My camshaft is at the minimum service size on both the journal > > and the lobe dimensions. This results in noise from the top end of the > > engine. Most used camshaft adds I've seen say they don't know how to measure > > to see if there cams are good or not. It's easy, use a digital caliper > > with a 1/ 100mm resolution and measure the cams' bearing journals on both > > ends and the cams' intake and exhaust lobes using the knife ends on the arms > > of the calipers. If you have a cam that shows little wear reply with the > > dimensions and we may make a deal. Thanks.
> Try
> measuring your cams with a micrometer before getting a new one. Proper > measuring may just save you some parts!