[DeTomaso] Pandora tdc--necessity is the mother of invention

[Christopher Kimball]

After watching the video of the compression device, I got to thinking.  Since Stephan had me buy a vacuum gauge, I wondered if I could somehow use it to find the compression stroke.  Lo and behold, in the kit was a spark-plug sized adaptor for the gauge.  I pushed it against the number one plug hole (it was a little too big to thread in) and manually turned the engine.  Sure enough, when the gauge registered pressure, the rotor was pointing to the number one cylinder, and the damper was just about where the black marker mark was.  This shows the rotor is right and the chances are good that the black mark is where I should be for the correct timing.

For now, I'm going with that!

Chris

> From: wkooiman at earthlink.net
> To: rob at dumoulins.net; fresnofinches at aol.com
> Date: Sat, 27 Nov 2010 17:53:17 -0600
> CC: detomaso at realbig.com
> Subject: Re: [DeTomaso] pneumatic kit to find TDC
> 
> It looks like a whole lot of gadget for a simple enough task.
> 
> You can remove a valve cover and watch the valves.  The compression stroke
> is TDC right after the intake valve closes.
> 
> If you don't want to remove a valve cover, remove the #1 plug, and cover the
> hole with your finger.  Don't stick your finger all the way in the spark
> plug hole.  Just cover the hole.  When the piston comes up on the compress
> stroke, it will blow your finger off.
> 
> You can use a screw driver to find TDC.  The screw driver will stop getting
> pushed out the hole as the piston comes up.
> 
> I have also used a spark-plug-TDC-locator.  It is essentially a piston stop
> that screws into a spark plug hole.  You turn it over by hand until it
> stops, mark the balancer, turn it over in the opposite direction, mark the
> balancer, halfway between the 2 marks is TDC.
> 
> -----Original Message-----
> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
> Behalf Of Rob Dumoulin
> Sent: Saturday, November 27, 2010 7:03 AM
> To: Larry Finch
> Cc: detomaso at realbig.com
> Subject: Re: [DeTomaso] pneumatic kit to find TDC
> 
> Sometimes the simplest solutions are the best.  This one also would only
> show you TDC on the compression stroke, which is when you want to line up
> the distributor too.
> 
> 
> On Sat, Nov 27, 2010 at 1:12 AM, Larry Finch <fresnofinches at aol.com> wrote:
> 
> >
> >
> >
> >  right here...
> >
> > http://www.jhmbuttco.com/acatalog/info_AST5005.html
> >
> > Larry
> >
> >
> >
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> 
> -- 
> Rob DuMoulin
> 904.476.8744
> rob at dumoulins.net
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