I'm pretty sure my TDC mark is correct. I remember spending a lot of time
worrying about this when putting things back together (and checking it).
Kurtis
----- Original Message -----
From: "Wm. Severin Thompson" <wsthompson@thicko.com>
To: "'K. Valentine'" <kevin@valentinephoto.net>; "'Kurtis Jones'"
<tr4driver@gmail.com>
Cc: "'Robert E. Shlafer'" <pilotrob@webtv.net>; "'Spridget List'"
<spridgets@autox.team.net>
Sent: Thursday, April 13, 2006 1:42 PM
Subject: RE: Ignition timing confusion...
> For some reason, I've also seen dampers where the timing mark is
> completely
> different in relation to the key slot to others. So, the damper mark may
> be
> incorrect.
>
> I always make sure I know where TDC is, and add a pointer JB welded on the
> front timing cover where it's easily seen on my race motors.
>
> -----Original Message-----
> From: K. Valentine [mailto:kevin@valentinephoto.net]
> Sent: Thursday, April 13, 2006 1:17 PM
> To: Kurtis Jones
> Cc: Robert E. Shlafer; Spridget List
> Subject: Re: Ignition timing confusion...
>
> On Apr 13, 2006, at 9:40 AM, Kurtis Jones wrote:
>
>> Thanks for the reply.
>>
>> If the harmonic balancer has slipped, why would everything line up
>> statically? As I mentioned, the TDC mark is right on the TDC pointer
>> when the #1 piston is at TDC and the valves look right - both valves
>> on #4 equally open. Surely the rubber can't be "flexing" 20 degrees"
>> under rotation!
>>
>> I'm driving the car (and more importantly enjoying it!), but I'm
>> really confused, and I'm trying to understand why the timing seems so
>> strange.
>
> Kurtis,
>
> Sometimes the dots on the timing gears are not in the correct
> (original) place on the new gears. Especially if they are not
> original parts. I've had gears that when the dots are lined up the
> timing is out as much as 20 degrees. That set of gears were made in
> India.
>
> Kevin V.
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