Talk:Hot rodding the HEI distributor
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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 | + | 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 |
: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. | :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. | ||
: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) | :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== | ||
| + | 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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