Removing the Fire Maker

[speedman]

Does anyone know how much can be gained in HP and engine speed if you replace the distributor with a crank fire system. I think I remember that it takes about 8-12 HP to drive the distributor. I like the ease of use with the Electromotive crank fire system and am trying to justify the expense

[HarryD]

Originally posted by speedman
Does anyone know how much can be gained in HP and engine speed if you replace the distributor with a crank fire system. I think I remember that it takes about 8-12 HP to drive the distributor. I like the ease of use with the Electromotive crank fire system and am trying to justify the expense

While I am certainly no expert, I would think about 1/100 hp would be all that is necessary to turn the rotor in a distributor cap. If I am not mistaken, you can very eaily turn them with your fingers once it is removed from the engine.

I suspect the "gain" from a crank fire system is from the improved timing of the spark relative to the piston position and the use of sophisticated maps to determine timing ar various engine speeds and loads.

My ignorant $0.02

[Early_S_Man]

I'm with Harry.

I don't know whether it is 1/100 hp or 1/3 hp ... but it only took 17 hp to turn the fan on a 917 engine at 8400 rpm!!! And, that was a LOT of air being moved!

You will have to find another point or three to justify the purchase ... just don't expect any significant hp gains!

[raceman]

the HP comes from the increased accuracy of spark/timing with the crankfire.

[Early_S_Man]

raceman,

That is PURE Marketeering BS!!! Hype, in other words ...