DP836
836cc BIG BORE PISTON KIT
For 1977-78 Honda CB750 F2
(Black Motor)
Kit comes complete with pistons,
rings, pins, clips, and head gasket.
As the 1977-78 Honda
CB750 F2 has an 18% larger combustion chamber to
compensate for the larger valves, through the years many
people have installed the standard 836 (ex: Wiseco K836)
kits for the 69-76 engines only to discover that the
compression was too low to give them the extra power
that they were after.
Dynoman now offers our
new custom 836cc piston kit for the F2. It has the
correct dome to raise the compression to a true 10.25:1.
This kit has the same compression ratio that the 69-76
models have with the K836 Wiseco kits.
These new pistons are
state of the art diamond cut on CNC machines from 2618
aluminum forgings. This is the same alloy used in many
prostock pistons. This process makes them lighter than
some of the cast pistons used in the 70s, but much
stronger. They also come with a brushed dome to smooth
any sharp edges.
They have shorter
piston pins for less weight and large valve pockets for
the 31 and 34mm valves used in the F2 engines.
They are the same bore
size as the standard Wiseco K836cc kit, so they are a
drop in for any F2 with the standard K836 Wiseco kit
already installed.
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