[TR] TR4a ignition advance

[Btmfdchn at aol.com]

In a message dated 9/21/2007 8:37:18 AM Pacific Daylight Time,  
spamiam at comcast.net writes:

Does  anybody know the ignition advance information for the TR4A?

I know that  stock static advance is 4 degrees BTDC, but what is the full 
vacuum  advance?  What is the full mechanical advance?

Someone said to me  that these engines can not tolerate all that much total 
advance (I.E. less  than 30 degrees).  I would have expected that a total 
advance in the  mid-30's would have been about right!

-Tony



Greetings...  The vac advance unit should be marked 2-6-3.   Advance starts 
at 2in of hg, all in at 6 in of hg with 3 degrees advance at the  dizzy-6 at 
the crank.  Not much.  Centrifugal advance depends on what  dizzy you've got.    
        TJ



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