Turbo LT-1

[Gary Derian]

I think it is the extended time at high rpm.  How much vacuum can you have,
10 or 12 psi?  That is only a 150 lbs of force on a 4 inch piston.

Gary Derian <gderian at oh.verio.com>


> The high vacuum stress makes sense..  High vacuum, as in allowing
> the engine breaking to slow you down after a run, really shortens the
> life of aluminum rods..
> Mike V
> >
> >  IMHO Pistons, pins, bearings, and block webing  ( and cast cranks)
> usually
> > go
> >  first before the rod (in compression). Heavy detonation usually
destroys
> >  pistons, lite = bearings.  The rod usually breaks at high rpm when the
> > throttle
> >  snaps shut putting extra vacuum on top of the piston (pressure on the
> bottom)
> >
> >  when the piston goes over the top and the rod tries to yank it down.
The
> > large
> >  end (rod bolts?) usually goes out of round then everything else goes
wrong.
> >  TWS
> >