Talk:Hot rodding the HEI distributor
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==Possible copyright/ownership conflict== | ==Possible copyright/ownership conflict== | ||
This appears to have been copy-pasted from here: http://67-72chevytrucks.com/vboard/showthread.php?t=88002 . Not sure if it's the original author that did the copy-pasting, in which case it would be OK. --[[User:Jon|Jon]] 15:57, 1 March 2007 (PST) | This appears to have been copy-pasted from here: http://67-72chevytrucks.com/vboard/showthread.php?t=88002 . Not sure if it's the original author that did the copy-pasting, in which case it would be OK. --[[User:Jon|Jon]] 15:57, 1 March 2007 (PST) | ||
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==Opinion on [http://www.crankshaftcoalition.com/wiki/Hot_rodding_the_HEI_distributor#What_vacuum_source_should_I_use-_manifold_or_ported.3F Cliff Ruggles' vacuum advance advice]== | ==Opinion on [http://www.crankshaftcoalition.com/wiki/Hot_rodding_the_HEI_distributor#What_vacuum_source_should_I_use-_manifold_or_ported.3F Cliff Ruggles' vacuum advance advice]== | ||
Note: Cliff is missing the essential point here. This is not about what some enegine "likes" or not but pure simple science. The whole idea with adding vacum-advance is to compensate for the fact that the thinner idle/cruise-mixture are burning slower, meaning it will need an earlier spark or more timing-advance to burn properly. A properly set full manifoil vacum will also prevent detonation since it goes off as soon as the enegine starts working/loosing vacum.--[[193.71.29.173|193.71.29.173]] 05:52, July 1, 2012 | Note: Cliff is missing the essential point here. This is not about what some enegine "likes" or not but pure simple science. The whole idea with adding vacum-advance is to compensate for the fact that the thinner idle/cruise-mixture are burning slower, meaning it will need an earlier spark or more timing-advance to burn properly. A properly set full manifoil vacum will also prevent detonation since it goes off as soon as the enegine starts working/loosing vacum.--[[193.71.29.173|193.71.29.173]] 05:52, July 1, 2012 | ||
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| + | :You need to realize that at idle the engine is running off of the idle circuit. If the idle circuit is correctly calibrated, there is no need for extra advance. The added advance from the vacuum advance using manifold vacuum is a help when a larger cam is used that has less idle vacuum. | ||
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| + | :Under cruise conditions it makes absolutely '''NO difference''' what the vacuum source is for the vacuum advance.--[[User:Cobalt327|Cobalt327]] 18:48, 1 July 2012 (MDT) | ||
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