That's a good point about taking it to a machine shop-wonder how much that
would cost. I do have burettes and syringes at home so I might have the
needed equipment on hand.
Now won't adding a thicker head gasket have the same effect as
shimming the came towers without the cam wipe problem?? If the centerline
of the cam is the correct distance away from the centerline of the
crankshaft won't it restore the correct valve train geometry? Since I plan
on lowering the CR to ~8to1 my cam centerline will be slightly farther away
than a stock 'new' head right? Will that cause any problems? I don't think
so as the cam chain tensioning devices should take care of that??? I'll just
have to remove the shims from my chain tensioner.
Daniel Neuman
Oakland CA
69 2000
$-----Original Message-----
$From: Al Boettcher [mailto:datsunsports@rogers.com]
$Sent: Thursday, November 10, 2005 1:51 PM
$To: Daniel Neuman
$Subject: Re: CC'ing a head
$
$Its quicker to take it to a good machine shop...that has the correct
$equipment to do this.
$to get correct valve train back..you shim the towers to raise them to
$compensate the
$amount that came of the head...use a metal head gasket to get the correct
$thickness
$to use to get your 8 to 1....more roadsters are about 9.5 to 1 this
applies
$for a 1600
$or 2000 head.
$Al Boettcher
$68 solex....Ottawa Ontario
$PS...you never shave any Roadster head...if its too warped get another
$one...
$you loose too much strength in the head and leaves it prone to warpage.
$----- Original Message -----
$From: "Daniel Neuman" <neuman@radonc17.ucsf.edu>
$To: <datsun-roadsters@autox.team.net>
$Sent: Thursday, November 10, 2005 10:25 AM
$Subject: CC'ing a head
$
$
$> Hello All,
$> I need to actively start to put my engine back together. I had the
head
$> re-done but I know its too thin. I want to cc my heads so I can figure
$> out
$> how thick of a head gasket I need to bring the compression down to about
$> 8-1
$> and to restore the correct valve train geometry. Has anybody ever done
$> this
$> before and would you please give me some guidance.
$> I understand that you fill the combustion chamber up with a measured
$> amount of light oil and that it helps to put a piece of flat glass over
$> the
$> head to know when you have really exactly filled the chamber.
$> So how do I do this exactly? I imagine I will have to figure out a way
to
$> mount the head to my workbench and to get/keep the head perfectly level.
I
$> am also going to need to turn the crankshaft to close all the valves.
How
$> do I do that when the head is off the engine and sitting on my workbench
$> (without screwing everything up??).
$>
$> Thanks,
$> Daniel Neuman
$> Oakland CA
$> 69 2000
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