Yes 300 M is the material of choice.. i don't think there is anything from a
chrysler that will go to those rpms short of their turbine car experiments..
Lots of steps to make one though goes to the heat treat shop at least 3 times
unless you are unfortunate enough to work harden it while cutting then there are
more trips..
Dave
"Albaugh, Neil" wrote:
>
> Dave & List;
>
> Just to clarify what you said, "...a 300 M crankshaft...", I'm reasonably
> sure you meant a crank made of 300 maraging steel alloy-- not one from a
> Chrysler 300M...in case there was any confusion on that point. 250M & 300M
> alloys are very tough stuff that also has a very simple heat treatment
> process.
>
> Regards, Neil Tucson, AZ
>
> -----Original Message-----
> From: Dave Dahlgren [mailto:ddahlgren@snet.net]
> Sent: Thursday, February 27, 2003 3:37 AM
> To: Elon Ormsby
> Cc: land-speed@autox.team.net
> Subject: Re: Four-Valve Pentroof Chamber
>
> The secret to thatsituation comes stock in most high performance
> motorcycles.
> Short sroke and light parts with exceptional material selection.. In a car
> size
> engine a 300 M crankshaft and Ti rods.. I have run Carillos witha 2.8 stroke
> just shy of 11k in a cosworth YB. the pistons didn't like it one bit
> though..
> Got about 11 or 12 passes out of it and that was it.
> Dave
> Elon Ormsby wrote:
> >
> > Dave Dalhgren said. . . (Snip) "lightweight valve gear that will go to 14k
> > rpm without pneumatic valve gear. With it 18k rpm is on the horizon"..
> >
> > Dave, how do you keep these motor together!! What kind of rods? Titanium
> > or other? - Elon
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