even or odd fire?
even or odd fire?
I dont know what makes an engine even or odd fire... I cant find it online, seems like it would be such a stupid basic and common knowledge question but there isnt any info on it..
is it what # cylinder fires first? thats my best guess..
trying to figure it out for the 3400, need to know for megasquirt
is it what # cylinder fires first? thats my best guess..
trying to figure it out for the 3400, need to know for megasquirt

88 Beretta CL - your average grandma car.. Ls1 swap in progress
77 Celica - needs an engine swap
96 Geo - 1.0L, Cam, 3 angle, magnaflow, Koni, coilovers.
86 Subi - Supercharged @7psi
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Re: even or odd fire?
An even-fire engine is one in which the firing of each cylinder is separated from its predecessor by the same angular travel of the crankshaft. An odd-fire engine is one in which each cylinder fires at a different rotational spacing from its predecessor.
GM 60 degree V6's are even-fire.
In a standard 6-cylinder engine with inline, horizontally-opposed, or a 60 degree V layout, one cylinder fires every 120 degree of crankshaft rotation.
GM 90 degree V6's are odd-fire.
GM 60 degree V6's are even-fire.
In a standard 6-cylinder engine with inline, horizontally-opposed, or a 60 degree V layout, one cylinder fires every 120 degree of crankshaft rotation.
GM 90 degree V6's are odd-fire.
'94 Quad 4 H.O. 5 speed Z26, Red & Rare! 1 of 896 Quad Z26's and of those it's 1 of 167 red paint/gray interior!
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Re: even or odd fire?
Do you need a msq to get your car running? I have a msq for msI and msII for a 3500 with 28lb 43psi injectors being run at 55psi. I can email them to you
Re: even or odd fire?
well that kinda makes sense. thanks!
barry, that would be helpful! im having an issue with no rpm reading and im thinking its one of the settings. but I had it set to odd fire so that may be it.
barry, that would be helpful! im having an issue with no rpm reading and im thinking its one of the settings. but I had it set to odd fire so that may be it.

88 Beretta CL - your average grandma car.. Ls1 swap in progress
77 Celica - needs an engine swap
96 Geo - 1.0L, Cam, 3 angle, magnaflow, Koni, coilovers.
86 Subi - Supercharged @7psi