--- On
Wed, 5/5/10, billmyong@...
wrote:
> From: billmyong@...
> Subject: RE: [anzhonda600owners] rocker arm / valve clearance > To:
anzhonda600owners@yahoogroups.com > Date: Wednesday, May 5, 2010, 12:53 AM
> The reason for the Go/No Go procedure is a better way to go. As, most rocker arm shafts have a mark on them from over torque on the bolt. Getting them within spec becomes harder as the shaft will move (falling into the old mark) when tightened. The book says 3 to 5 thousands, I chouse to keep things on the mark. The reason for readjusting the rocker arms is that they are loose, causing them to clatter. Adjusting them at 4 or 5 thousands normally causes the rocker arm to click more as the cam rotates past it's high point causing the flat area of the rocker to have an indentation over time which eventually makes them useless. They can be ground, but then the metal removed from the face of the rocker arm has to be replaced some where. This is where lash caps come into the picture. But that is another story.
> Bill
> > -----Original Message-----
> > From:
> > anzhonda600owners@ yahoogroups. com [mailto:anzhonda600 owners@yahoogrou ps.com] > > On Behalf Of > > goinhm@...
> > Sent:
> > Tuesday, May 04, 2010 12:18 PM
> > To:
> > anzhonda600owners@ yahoogroups. com
> > Subject:
> > Re: [anzhonda600owners] rocker arm / valve clearance
> > I have always set the valve clearance at 0.004 inches. Do it while the engine is cold. The shop manual states the clearance on the intake and exhaust must be from 0.0032 to 0.0047 inches. While 0.003 may seem to be close enough, it could be too close for the exhaust valve. The intake valve gets cooled every time it opens due to the incoming air/fuel charge. The exhaust valve only gets cooled (to the temperature of the cylinder head, at best) when it is seated/closed. Also, the hotter the exhaust valve becomes, the more it lengthens which could keep it off the valve seat even longer.
> > It is also a good idea to check the thickness of the feeler gauge with a micrometer so you know what you have. When you buy these tools, they never seem to supply any information regarding the tolerance allowed.
> > good luck,
> > Dale
> > > Hi Ryan;
> > > I have a bunch of them, but figuring out one that will work in your car is another issue. If the rocker arm shaft openings in your Cam Box are warn there is another issue. All of the ones I have are used. With a capitol U.
> > > I use two feeler gauges, (something I picked up while in Viet Nam) 3 thousands is a Go, 4 thousands is a no go.
> > > The procedure is in the Owners Manual as well as the shop manuals. The attached article talks about changing your cam chain. but it also walks you though adjusting your rockers.
> > > Bill