Question for C123- C153 pullers

Rex Simpkins · Jul 27, 2014

As you all know I am coming to the final stages of the C153 Super C project. My question is--As I am trying to keep this as simple with as few parts as I can is there any down side to running a magneto on a C-153????? Just wondering if the mag would handle the additional rpms and other C-153 differences

gene bender · Jul 27, 2014

Why not run the mag racing engines of the past used them and 2100 rpms sure wont hurt.

pete 23 · Jul 27, 2014

Your spark advance on the mag is going to be right about 35 degrees before top dead center at all engine speeds and that C-153 is to run about 22 degrees before top dead center at full throttle with battery ign. The automatic advance in the battery ignition unit will, if operating correctly retard and advance the timing according to engine rpm. I would say 35 degrees advanced would cause severe detonation with engine working hard.
You actually need to fine tune it on a dyno for max horsepower with least advance to be safe for heavy pulling but at least get a good battery ign unit made for the C-153.

Rex Simpkins · Jul 28, 2014

Understand O.K. Thanks

Question for C123- C153 pullers

Rex Simpkins

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gene bender

Well-known Member

pete 23

Well-known Member

Rex Simpkins

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