Case dc timing

daren785

New User
oes anyone know what a safe timing advance is on a case dc with a stock cam. And high compression Pistons with premium fuel. I also have a programable distributorless msd waste spark ignition and a throttle body electronic fuel injection system. Rev limiter set at 3000 rpm.
 
How are you measuring timing now? Most stock magneto setups had a static timing mark with a hole or pin, from what I've gathered. You would need to have some type of external marks on the damper pulley for your application. Are you still running stock rods with babbit bearings? Sounds like an interesting setup. As far as ideal timing, you're probably going to have to load it up and check for detonation as you increase timing, then back off a couple degrees once you find it. Since you're in fairly new territory, you're pretty much on your own, unfortunately. Keep us posted on your progress, though.
 


The only accurate way to do it is install a timing pointer at the front pulley, a very easy job, on the front cover, right side are two 3/8 bolts about 4" apart roughly pointing toward the crankshaft. I cut a piece of metal about 1" wide and slot the lower end to slide under the lower bolt and drill a hole to accept the upper bolt, remove the plug on the bell housing and find the "D" mark and weld a pointer on the plate pointed at the front pulley. With the D in the hole, mark the edge of the pulley at the pointer and use a chisel to make a mark on the pulley edge, then use white paint to mark the chisel mark.

Once the pointer is installed you must use a advance style timing light that you can set the timing into the light and it will correct the flash back to your 0 mark on the front pulley.

I believe a stock D series engine would be very comfortable at 25. I have ran more on ones that we turn at higher rpms but see no particular power loss dropping back.

Every DC I own has a timing pointer installed as otherwise timing is just a guess, different mags have different "lag" angle and that is what sets timing from start to run.

This info is for those who want to know exactly where they
are setting their timing and few would see the difference in field applications if done oterwise, I build performance engines and like to be as precise as possible.
 

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