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94mm P & B Kits = A & B Difference?
LUFTMEISTER - March 28th, 2013 at 06:44 PM

As per header. Which is recommended for 82mm crank and why?
Cheers Gurus

1916baja - March 28th, 2013 at 07:11 PM

I'm no expert but I'm pretty sure b pistons are better for stroker as they keep the engine width down.

waltermitty - March 28th, 2013 at 07:35 PM

shorter skirt clearance for conrods.
M

matberry - March 28th, 2013 at 07:47 PM

Pin height is different in the piston, barrels are the same. Pin is 6.5 mm closer to the piston top on a B kit, therefore for an 82 stroke engine, with stock rod length the engine should end up near stock width (give or take due to shims or custom machining for deck ht or CR).

LUFTMEISTER - March 28th, 2013 at 08:21 PM

Thanks for the straight forward answer Matt. How do I measure the pin ht to check which pistons I have?

matberry - March 29th, 2013 at 03:25 PM

If you measure the distance from the pin to the top with a vernier, an A piston is 28.5 and a B is 22mm