"K Smith" wrote in message
...

I will point out that garden variety aluminium, we use it here, has a
"melting" point of about 660C or 1220F. So your new "special" high temp
alloy pistons might be stronger, but they are an admission the fuel is
autoigniting, which it definitely is by much much lower temps.



Ah, you don't get it at all, Karen. With FICHTs performing well over 2000
hours in commercial fishing use and for years doing OK, it's not a problem
of piston melting. The "NASA space age" aluminum does not expand as much as
traditional alloys. This allows E-TEC to have a very snug piston to cylinder
fit for less piston-slap noise in the motor. There are also no cutaways in
the skirts either, so the piston has less "rocking" motion. The E-TEC is
competing against the 4-stroke noise issue and the less expanding, tighter
fitting piston helps. I've run the motors and mechanical noise is almost
non-existant, even with the motor cover off.

You are correct about the off-topic posts, most should be relegated to
alt.news. political. crap. See, we can agree on something!

Bill Grannis
service manager