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Posted by: Bartlett 914 Aug 3 2011, 03:24 PM

I have 2 distributors. A 250 and a 205A. Both are giving me issues. I am trying to adjust my timing and either the range of the advance is too small or I am advancing too fast. It seems I am fully advanced at about 2600 rpm. I should be at 3500 rpm. Is the maximum advance at 3500? Should there be some range beyond 3500? I have looked to see if something is stopping the advance plate and I don't see anything. This leaves the vacuum canister as a little suspect. I do have it disconnected. I am also using a Hot Spark igniter. Anyone see this before?

Car is a 2.0 D-jet configured for a 74

Posted by: Dave_Darling Aug 3 2011, 04:40 PM

Max centrifugal advance should be in the ~2800-3000 RPM range for 2.0s, depending on the distributor. Setting the timing at 3500 is just to make certain that the advance is all in.

The factory manuals (there should be a PDF around somewhere!) have graphs for several of the stock distributors, they basically look like two straight lines.

Summary of the info from the graphs (and from tables also in the manual) :
http://web.archive.org/web/20030803223329/http://www.dgi.net/914/tech/distrib.html

--DD

Posted by: Bartlett 914 Aug 3 2011, 04:57 PM

QUOTE(Dave_Darling @ Aug 3 2011, 05:40 PM)