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Re: vacuum for Lucas dizzy

To: gjbranch@mediaone.net, spridgets@autox.team.net
Subject: Re: vacuum for Lucas dizzy
Date: Tue, 24 Jul 2001 20:40:21 EDT
The Lucas has always been better.  Many people are now using the Alden 
modified distributor (where did "dizzy" come from anyway?) or the Petronix 
electronic modification.  You want to do some research first before you start 
ordering parts.  First, what advance curve do you want?  The weights in the 
distributor which control the mechanical advance are removable and different 
weights can be substituted for different curves.

Many people will tell you to use a vacuum advance for street applications, 
but remember, the Mini Cooper came with a centrifigul-only advance.  The 
vacuum advance should run to the manifold, but be sure to check that the 
diaghram in the advance is in good shape.  The simple test is to stick the 
end of the advance that connects to the vacuum line into your mouth and suck 
on it (insert your own joke here).  The little arm should pull into the body 
of the mechanism and stay there as long as you are applying vacuum.

Also, you need to check the shaft to make sure it isn't bent.  Just check the 
point gap on all four cam lobes once you haves set the distributor up.  You 
should see some minor differences from lobe to lobe.  That is why there is a 
14 to 16 thou range in the spec books.  The closest lobe should be no more 
than 2 thou closer than the furthest lobe.  Any more and the shaft is bent 
too far to use.

Good Luck

Bill E.



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