[ROVERNET - UK] P6 interference/free running?
p6rovers at yahoo.com
Tue Dec 11 02:08:16 GMT 2007
I would ask if you had talked to Ruth for input.
Did you have the head gasket installed at the time?
Were you using 2000 TC pistons or 2200 pistons?
I have 2 cars with 2200 pistons (9:1). The one engine
(now out and a spare) did about 56,000 miles with no
problem and the current car has 46,000 miles on the
--- Ron Venter <venterrh at telus.net> wrote:
> Nathan and Vern,
> You have me worried! I recently
> fitted a 2000
> engine with new 9:1 pistons. With the head off, the
> rotated fully. With the head on but without the
> timing chain
> connected, I could not turn the crankshaft a full
> degrees -- almost but not quite. With the timing
> chain on
> everything rotates smoothly. What have I done wrong?
> The engine is
> not yet back in the car, so I don't know if it
> actually runs.
> Ron V.
> At 09:09 AM 07-12-09, you wrote:
> > I have
> > > one question. What is
> > > the difference of a free running design and a
> > > interference design?
> >A free running or free wheeling engine has enough
> >clearance between the valves (when open) and the
> >pistons (when at Top Dead Center) that they don't
> >collide if the timing chain or belt fails and the
> >valve timing gets out of sync.
> >An interference engine can bend valves or worse if
> >chain/belt breaks.
> >I believe the original P6 engine is free wheeling.
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