Re: Piston to valve clearance.
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Re: Piston to valve clearance.



Paul, I never had the crank- pistons out.  Yes,  I had to know the
piston to deck height to figger the compression ratio.  The thing for
me to do is see if I can measure the valve lift to head  surface.
Maybe it will clear more than it
looks.................................MO

On Dec 6, 8:16 pm, Paul L <pjl...@xxxxxxxxx> wrote:
> Have you got the rotating assembly together yet?  Do you know how far
> down in the hole the pistons will be at TDC?
>
> Paul
>
> On Dec 6, 7:24 pm, MO <mic...@xxxxxxxxxxxxxxx> wrote:
>
>
>
> >  Thank you Mike.. good information,  even a slow dude like me can
> > understand..8-)
> >   I always used that method on my Chebby engines.  However this is my
> > first big nlock Mopar, and with switching heads around --I don't have
> > enough experiebce. Hence , all the questions. Anyway with all the
> > help, I am enjoying learning new
> > stuff. .....................................MO
>
> > On Dec 6, 7:09 am, Mike & Deb <mdlefe...@xxxxxxxxxx> wrote:
>
> > > The simplest way to measure piston to valve clearance is to place a 1/4" thick strip of modeling clay across the top of the piston placed where the valves are closest to the piston. Temporarily assemble head to block with gasket (you could install a used gasket or, if new is all that's availible-just snug head bolts lightly so it can be used in final assembly-adjust measurement to account for compressed thickness ) and install valve train for the clayed cylinder. Rotate the crankshaft slowly through one revolution-stop if you feel any resistance. Now dissemble and check clay thickness at valve imprints. Slice with razor blade at thinnest area and measure. Make sure you allow for final gasket thickness. If you are using new, dry hydralic lifters they won't give full cam lobe lift but could if you have adjustable rockers or pushrods to eliminate all clearance in valve train. Solid lifters get around this problem.
> > > Now with all this being said I don"t think your .484 lift cam will cause any clearance issues. I run the .509 cam in 440 10:1 motors with no issues. Have fun!
> > > Mike LeFevre- Hide quoted text -
>
> - Show quoted text -

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