How to actually set 36 degrees max timing...?

[zigzag240]

My car is a F54 with '82 "8.5 degree" dizzy and E12-80. I've searched the forum and understand the concepts, but I'm still unclear how to adjust my distributor timing to reach a max of 34-36 degrees.

 

Using an adjustable timing gun:

 

- set static timing at idle to 10.

- dial the gun to 26, rev the engine when the dizzy advances fully the timing mark should point at 0tdc.

 

That means 36 degrees total? Is it that simple?

[JMortensen]

Not quite. The 8.5 gets doubled to give you the full advance. That means that your dizzy has 17 degrees of mechanical advance. So theoretically setting the timing at 19 degrees at idle will get you your 36 total. To test, set the gun at 36. Rev the engine. When the advance is all in (should be around 2500 rpms) then the pointer should be at 0.

[zigzag240]

Makes sense...but I guess what I'm really asking is on a F54 is there a "correct" idle timing setting that calculates out to 34-36 when revved above 2500? 19 would ping pretty heavily on an engine asking for 8btd stock I would think.

 

My area is very surburban and it's tough to do 'test and tune', I kinda would like to set to the right spot once and drive. I appreciate any input.

[z-ya]

If the engine is completely stock, disconnect the vacuum advance, and plug the hose so that there is not advance at idle. Set the idle speed and then the idle timing per the service manual. Reconnect the vacuum advance and you are done.

 

If you have made modifications, and want to run as much advance as possible to get more power, follow Jon's instructions above. This requires trial and error because your engine might detonate with 36 deg of advance. So adjust, drive, adjust, drive, until you get the max advance without detonation.