Mrkim Report This Comment
Date: June 21, 2009 09:40AM
I have a cuppla pics of the pistons and rods prior to the parts being mated but
they come out as thumbnails so they weren't really postable here. The rods
actually attach to the pistons with some rather large bolts but there are also a
huge number of oiler tubes that come through the bottom of the piston and supply
oil to the piston domes and bores to keep it all lubricated and cooled.
Another interesting cuppla ideas here are that the pistons have 5 ring lands
where most 2 stroke engines use 2 rings (I think) and a typical 4 stroke engine
will have 3 rings and an oil scraper ring. These also appear to be "gas
ported" pistons with huge gas ports located around the whole perimeter of
the pistons. Gas porting has been around for years and falls in and out of
favor with engine designers. It's a technology used to take compression from
the top side of the piston and port it to the back side of the rings to force
the rings outward to enhance ring to bore mating and keep the rings in better
contact with the bores, thereby increasing the mating and sealing efficiency of
the rings to the bores.
Edited 1 time(s). Last edit at 21/06/2009 09:41AM by Mrkim.