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11-30-2016, 12:40 PM | #1 |
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Join Date: May 2010
Location: Star, MS
Posts: 4,024
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Chevy distributor advance limit bushing
Maybe you all have this already figured out. I've been dinking around trying to get my mechanical advance limited for the flathead. I had a rubber tubing bushing that split and was trying to make something work. I was grinding a 3/16" nut down to somewhat close dimensions and dropped it. While looking for it I found a piece of Moroso 7mm spark plug wire insulation that had rolled under a cabinet. The white core measured 3/16" so I stripped the black insulation off and measured the thickness. As the picture attempts to show, the core insulation is a little off-center, making a variable thickness outer insulation. The outer insulation just fits as a bushing for the advance limit post and can be rotated to suit.
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11-30-2016, 02:00 PM | #2 |
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Join Date: May 2010
Location: Canada Where it snows
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Re: Chevy distributor advance limit bushing
Has been accomplished with a screw or weld the slot shorter.
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11-30-2016, 04:51 PM | #3 |
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Join Date: May 2010
Location: SPEEDWAY INDIANA
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Re: Chevy distributor advance limit bushing
Just for discussion the chevy cam assemblys are numbered and offer different levels of mech advance based on engine, drivetrain etc. A common number is a 24 which has 24 degrees of advance when used with the rubber bushing.
Another tuning tip from our web site...We offer these ready to go on your distributor , drilled .tapped with adjustment wrench (.050) for $50 includes shipping..... Takes some time to do this with special jig.... http://www.bubbasignition.com/timing.html |
12-01-2016, 12:00 PM | #4 | |
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Join Date: Dec 2010
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Re: Chevy distributor advance limit bushing
Quote:
On the last few I did I used a 3-48 set screw instead of a 4-40. Leaves more meat around the hole. |
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12-01-2016, 02:35 PM | #5 |
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Re: Chevy distributor advance limit bushing
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