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Re: TR3 timing marks

To: geohahn@ultrasw.com, triumphs@autox.team.net
Subject: Re: TR3 timing marks
From: ZoboHerald@aol.com
Date: Fri, 28 Jun 2002 16:26:29 -0400
In a message dated Fri, 28 Jun 2002 2:49:24 PM Eastern Standard Time, 
geohahn@ultrasw.com writes:

> 
> 
> "McEwen, Art" wrote:
> 
> > Silly question but:  How am I supposed to set the timing on my 3 without any
> > gradient marks on the pulley?
> 
> If you have a protractor handy (or a sixth grader who will lend you theirs) 
>draw
> a circle on a sheet of paper as close as you can come to the diameter of the
> crank pulley (borrow their compass while you're at it).  Then measure 4 
>degrees
> on the circle.  This should give you a close enough feel for it that you can
> eyeball the setting.  As Randall noted, the best results come from driving and
> stopping along the way and tweaking the thumb wheel.
> 
> Or... ISTR that each tenth inch on the pulley circumference is about 2 
>degrees.
> Not precise but should get you in the ballpark.

This might help a bit: 

"Timing Marks

"Top Dead Centre Mark, hole drilled in
fan pulley and pointer on timing cover.
15 degrees before or after top dead centre =
0.081" piston travel or 1.5" (measured round the 
flywheel adjacent to the starter teeth)."

-- from the "Useful data [TR3]" section of the TSOA Handbook
<http://www.vtr.org/tsoa/handbook/tsoa9bg.htm>

--Andy Mace

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