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Different Distributor for Different Heads?? |
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Bri892001 
Grand Poobah 
Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4945 |
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 Topic: Different Distributor for Different Heads??Posted: January-26-2012 at 6:02pm |
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I stumbled across this item under Clearance on the Skidim website. It is a Prestolite, two wire (no ballast) distributor, that is said to be specifically for RH engines (obvious) that are High Output or have GT-40 heads (not so obvious).
It says that the advance curve is set specifically for these engines. I though it was interesting. Would the advance be more or less aggressive, or just greater in range? Why? Clearance with Special Dizzy at the Bottom |
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SNobsessed
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Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
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Posted: January-27-2012 at 10:53am |
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Brian - The advance curve they have is pretty mild. I think it is 18 degrees.
That is essentially the same dizzy I put in my boat. (Mine is LH). It works great; but not satisfied with stock, I sent it to a dizzy shop & they put in a lighter spring & extended the guide slots(for the weights) so it would climb the advance curve faster & get 24 degrees of variable advance. |
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GottaSki
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Joined: April-21-2005 Location: NE CT Status: Offline Points: 3333 |
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Posted: January-27-2012 at 11:18am |
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The science behind it is higher compression needs less total advance, the flame front moves faster in a denser charge, so peak combustion pressure happens sooner.
There is probably a small diference in total span from the std. unit. I doubt one could tell seat of the pants or enough to hurt anything if crossed up. |
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"There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing."
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