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94mm P & B Kits = A & B Difference?

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LUFTMEISTER Veteran Volks Folk

2,041 posts · joined Jul 2005 ·

#949202
As per header. Which is recommended for 82mm crank and why?
Cheers Gurus
Customer service is not dead in Australia.

Always after HAZET & MATRA & VW factory tools

1916baja Custom Title Time!

1,990 posts · joined Sep 2007 ·

#949205
I'm no expert but I'm pretty sure b pistons are better for stroker as they keep the engine width down.

waltermitty Legend when my beer goggles are on

1,993 posts · joined Aug 2002 ·

#949212
shorter skirt clearance for conrods.
M
23 windows ...8 too many!

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#949215
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).
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

LUFTMEISTER Veteran Volks Folk

2,041 posts · joined Jul 2005 ·

#949222
Thanks for the straight forward answer Matt. How do I measure the pin ht to check which pistons I have?
Customer service is not dead in Australia.

Always after HAZET & MATRA & VW factory tools

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#949320
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
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE