or you can just look up what the stock clearance is and then calculate the
new cam and lifters. that's called the easy way.
----- Original Message -----
From: Mike Schwall <mschwall@flash.net>
To: <dakota-truck@buffnet.net>
Sent: Tuesday, February 29, 2000 8:18 PM
Subject: Re: DML: New cam, and roller rockers....
> At 07:02 PM 2/29/2000 , you wrote:
>
> >Ok everyone, with the new light on the roller rocker buy I have a
> >question.... I am going to install a crane cam in my in 5.9 Magnum in two
> >weeks, over my spring break, now the question remains, can I run my new
> >cam with 1.7 rockers with no problems? Or should I wait and let the cam
> >get broken in on the factory ones before I put the 1.7s on??
> >
> >Thanks!
> >
> >Clay
>
>
> Clay the pistons Clay! Go to the local hobby shop and get a pound of
> modeling clay. Take a head off. Put a wad of clay on a piston that's
high
> in the bore. Make the clay 3/8" thick, and make sure it will get under
> both valves. Slap the head on (torque the bolts down), turn the engine
over
> by hand a couple times. Take the head off, get a razor knife, cut off the
> material around the valve imprints (*important* don't disturb the clay
> where the valve imprinted it) Get a caliper, measure the thickness of the
> clay where the valves hit. I believe the optimum clearance between valves
> and the piston is like .200". That's off the top of my head, my books are
> still in San Antonio. I'm sure someone could look it up. After that, it's
> just math. Add the current cam lift plus the current rocker lift. Add
the
> new cam lift with the 1.7:1 rocker lift. Subtract. If you still have
> .200" (or whatever the safety limit really is) your in luck, if not, how
> much different?
>
> Mike
>
> __________________________
> mschwall@flash.net
>
>
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