I've had this happen too. Try moving the dist. gear one tooth . You have to
take out those 2 - 1/4" bolts at the base of the dist. housing. Timing
advance on a 7.5 dist cam shouldn't make that much diff.....Make sure the
rotor is pointing at #1 or close to it when you have it a TDC. Make sure
the dizzy is completely seated on the mounting, this might take a couple of
revs after you've had the mounting and dist. gear out.
One last thought, did you put the dist cam back in correctly, did you change
the vacuum unit out on the dist? These can throw off the your initial timing
setting also.
The car won't start if its 180 off, it'll just backfire alot.,
Mike K.
Colo. Spgs.
----- Original Message -----
From: "Mark Dent" <mark@dealermats.com>
To: "datsun list" <datsun-roadsters@autox.team.net>
Sent: Sunday, August 25, 2002 3:56 PM
Subject: Timing problems..... I want to get to The Glen!
> Ok here goes.
>
> I rebuilt my carbs and want to get them set right. I figured I might as
well
> get the timing set right first. That was 2 weeks ago.....
>
>
> I have the motor at TDC. On the compression stroke. The notch in the
pulley
> lines up with the mark on the cover. I put the distributor gear in with
the
> slot at 11:25. Put everything together and get out the timing light.
Here is
> where it gets strange.
>
>
> The best I can get with the timing light is about 40 degrees BTDC. Both
the
> adjusting screw and bolt are loose. I have moved the gear a notch in both
> directions, not off a tooth.
> I am doing this with the vacuum line disconnected. What am I missing? Is
> there a way to set it without the car running so I can set it and then
adjust
> the carbs?
>
> My distributor is a 7.5 one. R motor. Stock SU's
>
> Could the mechanical advance be kicking in? It is at a high idle....
>
>
> I thought this would be easy........
>
>
>
> Mark
> Baltimore MD U.S.A.
> 63 & 64 1500's 68 1600
> www.datsunroadsters.com
> www.roadster.org
>
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