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| − | ==Possible copyright/ownership conflict==
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| − | 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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| − | :I added credit for the thread where the article was taken.--[[User:Cobalt327|Cobalt327]] 07:54, 19 June 2012 (MDT)
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| − | ==Photos for possible use==
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| − | [[File:HEI CAP- ELECTRODE- INSULATOR- COIL DIAGRAM.jpg|200px]]
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| − | [[File:HEI MAGNETIC PICK UP COIL V6 EVEN FIRE.jpg|200px]]
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| − | [[File:HEI COIL DATA RATIO WINDS ETC.jpg|500px]]
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| − | [[File:DIST THRUST BEARING-SPACER 003.jpg|200px]]
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| − | [[File:ROTOR where weights hit2.jpg|200px]]
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| − | [[File:HEIadvlimitlock2.jpg|500px]]
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| − | [[File:Hei mechanical ADVANCEslots and pins 0011.jpg|200px]]
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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]==
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| − | Note: Cliff is missing the essential point here. This is not about what some engine "likes" or not but pure simple science. The whole idea with adding vacuum 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 manifold vacuum will also prevent detonation since it goes off as soon as the engine starts working/loosing vacuum.--[[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 unless the can timing is causing a lean condition at idle speed. The added advance from the vacuum advance using manifold vacuum can 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]] 18:49, 1 July 2012 (MDT)
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| − | ==Revision details==
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| − | On 06-24-13, anonymous user 72.205.31.197 removed a section "advertising" MSD. Original revision was on January 22, 2009 at 12:50, by anonymous user 68.35.121.35. This can be verified by checking the page history.--[[User:Cobalt327|Cobalt327]] 18:58, 24 June 2013 (MDT)
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