It's running again.... finally!

[Badbugtwo]

After almost three years, I finally put the engine back together. This time I changed out the 86mm flanged crank for a 2.1 waterboxer crank that was offset ground to 2" journals, so it's now 80mm.

Here is some more info....

http://www.badbugracing.com/2008_engine.htm

[Passatman]

Hi Badbug 11,

I have being to your site and like what i see, but i am particularly interested in the coil per plug setup you will be doing. Which of the stand alone systems will you be using and how do you propose to link the coils to the stand alone management. By the way i am going to use megasquirt on my engine and would also love to use coil per plug setup.

[Stephanhipwell]

beautiful

[Unkl Ian]

What was the logic for wanting a shorter stroke ?

[Badbugtwo]

Hi Badbug 11,

I have being to your site and like what i see, but i am particularly interested in the coil per plug setup you will be doing. Which of the stand alone systems will you be using and how do you propose to link the coils to the stand alone management. By the way i am going to use megasquirt on my engine and would also love to use coil per plug setup.

Thanks!

I have more info on this page that should answer your questions...

http://www.badbug.com/pantera_efi.htm

[Badbugtwo]

beautiful

Thanks!

[Badbugtwo]

What was the logic for wanting a shorter stroke ?

Well I don't know if I really wanted a shorter crank, but felt I might need one.

My theory is that with a shorter stroke I should have less flex, so it should last longer.

I am also thinking that there is a point of diminishing return when you go longer on the stroke. If I find out that the engine, just really doesn't perform as expected, I can always go bigger again! If/when I can afford it that is!

[fastvwman]

What was the logic for wanting a shorter stroke ?

Well I don't know if I really wanted a shorter crank, but felt I might need one.

My theory is that with a shorter stroke I should have less flex, so it should last longer.

I am also thinking that there is a point of diminishing return when you go longer on the stroke. If I find out that the engine, just really doesn't perform as expected, I can always go bigger again! If/when I can afford it that is!

your correct, a smaller stroke will allow more overlap of material between the rod and main journals. notice some super street and pro stocks use 76mm flanged cranks with type 4 mains and 4" pistons.