dontknowitall Posted October 6, 2010 Report Share Posted October 6, 2010 After looking a long time I found these and bought one to try out... It fits! great working and affordable so I thought I share this with all of you mates.. http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=260666030430&viewitem=&sspagename=STRK%3AMEWAX%3AIT Quote Link to comment Share on other sites More sharing options...
dontknowitall Posted October 6, 2010 Author Report Share Posted October 6, 2010 Question: Has any one a picture or drawing of what supposed to be inside the Vacuum advance control unit? I found a spring and some washers in my old one and want to be sure.. Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted October 6, 2010 Report Share Posted October 6, 2010 Question: Has any one a picture or drawing of what supposed to be inside the Vacuum advance control unit? I found a spring and some washers in my old one and want to be sure.. The spring and shims (washers) are used to set the correct advance curve for a distributor. Not all distributors have the same curve. To make this adjustment requires a vacuum pump. As an example on a 1947 Chrysler flathead 6 the advance should start 2 degrees advance @ 8 inches of mercury and be full in 8 degrees of advance @ 17 inches of mercury. The adjustment is made by adding or removing shims that set the spring tension. Many folks simply install a replacement vacuum advance pot without making this recommended adjustment. This adjustment needs to be made for maxium distributor performance and efficiency. Pictured below is a hand vacuum pump that works well to make this critical adjustment. Quote Link to comment Share on other sites More sharing options...
dontknowitall Posted October 6, 2010 Author Report Share Posted October 6, 2010 (edited) Thank you for this imput.. Just brilliant I would have not known as the "book" does not tell me....so, what would that be for my 218 longblock ? Distributor Nr: IAT 4004A - 11EJO8344?? and where to find such info? The spring and shims (washers) are used to set the correct advance curve for a distributor. Not all distributors have the same curve. To make this adjustment requires a vacuum pump. As an example on a 1947 Chrysler flathead 6 the advance should start 2 degrees advance @ 8 inches of mercury and be full in 8 degrees of advance @ 17 inches of mercury. The adjustment is made by adding or removing shims that set the spring tension. Many folks simply install a replacement vacuum advance pot without making this recommended adjustment. This adjustment needs to be made for maxium distributor performance and efficiency.Pictured below is a hand vacuum pump that works well to make this critical adjustment. Edited October 6, 2010 by dontknowitall Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted October 6, 2010 Report Share Posted October 6, 2010 My book shows for an IAT 4004 distributor that the advance should start 2 degrees @ 7 1/4 inches of mercury and be full in 9 degrees @ 15 inches of mercury. This information can be found in a Motors repair manual. The book I used is the 1953 addition. Quote Link to comment Share on other sites More sharing options...
dontknowitall Posted October 7, 2010 Author Report Share Posted October 7, 2010 Thanks Don, when I assemble and have a mechanic helping me I will show him this.. My book shows for an IAT 4004 distributor that the advance should start 2 degrees @ 7 1/4 inches of mercury and be full in 9 degrees @ 15 inches of mercury. This information can be found in a Motors repair manual. The book I used is the 1953 addition. Quote Link to comment Share on other sites More sharing options...
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