[ROVERNET - UK] P6 interference/free running?

[David Sheuring]

Ok...I can answer this...It IS A Interferring
motor...ABSOLUTLY......you have to have the cam set up
with the motor to turn otherwise you WILL bend a
valve....I know...been there done that....

Just had to a my "2 bits" worth
Cheers
David
--- Vern Klukas <vern at inkspotco.com> wrote:

> >Nathan and Vern,
> >                    You have me worried! I recently
> fitted a 2000 
> >engine with new 9:1 pistons. With the head off, the
> crankshaft 
> >rotated fully. With the head on but without the
> timing chain 
> >connected, I could not turn the crankshaft a full
> 360 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.
> >                                                
> Regards,
> >                                                   
>      Ron V.
> 
> I think my memory may of led me astray, glad you
> spoke up Ron (Temmie 
> is doing fine, BTW). It was more than 20 years ago,
> after all.
> 
> I'm wondering if the engine is actually an
> interference engine and, 
> in the failures I described the broken bit of
> camshaft came to rest 
> with both valves closed. That actually seems almost
> reasonable, given 
> the torque needed to rotate the camshaft. In that
> case, the engine 
> would still rotate freely.
> 
> The workshop manual clearly warns against rotating
> the engine without 
> timing chains, "otherwise damage to the valve heads
> and piston crowns 
> may result"
> 
> Lets lean on the side of caution and say that the
> engine is an 
> interference engine.
> 
> Yours
> Vern
> 
> 
> 
> -- 
> Vern Klukas                             I'm a little
> . . .
> Inkspot Type & Design
> vern at inkspotco.com
> 
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