banzai37
I'm New Here
I am trying to make sure that the RPM drops I am seeing are correct for my setup:
10 SMOH IO-360A1A CS (8.5:1 compression), with a LS II and regular Slick mag. Doing a runup at 1800, I get 30-50 on the LS and 150-175 on the Slick.
Is this normal?
The engine was just rebuilt with new LS wires, LS plugs, and a new Slick mag. I kept the old Slick plugs (cleaned/gapped) and Slick ignition wires. Before the rebuild, the Slick drop was closer to 100, so I have been hunting for causes of the higher drop, but can't find anything. Prior to rebuild the engine had 10:1 pistons. I have timed and retimed the mags.
During the mag checks, all EGT's rise approximately evenly. The only other observation is that the #4 CHT is higher than the other cylinders (compared to the rebuild).
I have looked at other posts and can't find consistent reports of what mag drop I should expect. The LS manual says the Slick mag drop could be 100-200.
10 SMOH IO-360A1A CS (8.5:1 compression), with a LS II and regular Slick mag. Doing a runup at 1800, I get 30-50 on the LS and 150-175 on the Slick.
Is this normal?
The engine was just rebuilt with new LS wires, LS plugs, and a new Slick mag. I kept the old Slick plugs (cleaned/gapped) and Slick ignition wires. Before the rebuild, the Slick drop was closer to 100, so I have been hunting for causes of the higher drop, but can't find anything. Prior to rebuild the engine had 10:1 pistons. I have timed and retimed the mags.
During the mag checks, all EGT's rise approximately evenly. The only other observation is that the #4 CHT is higher than the other cylinders (compared to the rebuild).
I have looked at other posts and can't find consistent reports of what mag drop I should expect. The LS manual says the Slick mag drop could be 100-200.