You see that's the problem - you thought it would be easy. Nothing usually
goes as planned.
Did you check the internals on the dizzy to make sure nothing came amiss
when you removed it? I can imagine an advance spring coming off that would
cause the problem.
How fast an idle? Mechanical advance starts coming in at around 900 rpms or
so, so you'd have to retard the timing a bit more at idle if you can. I
bought an advance timing light and time it at 3000 rpms to get about 33*
total advance w/vacuum disconnected. It works out to about 22* at idle.
Good luck and I'd double check the internals first - shit happens.
Mike
Let's hope we have a nice DRY meet at the Glen. I'm thinking of bringing my
Datsun but almost everytime I brought it it rained like cats and dogs for
the entire weekend and the sun comes out on Monday :(
----- Original Message -----
From: "Mark Dent" <mark@dealermats.com>
To: "datsun list" <datsun-roadsters@autox.team.net>
Sent: Sunday, August 25, 2002 5:56 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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