[Mgs] Fore and Aft Rod Movement

[BDavis]

Thanks, Milton, Max and Paul.
I appreciate your answers to my question. It
stands to reason that there must be 'some' fore and aft rocking at the little
end... all dependent of course on the wear and the width of the big end
bearings. 
Good food for thought.
Regards, Bill

--- On Mon, 10/19/09, Paul
Hunt wrote:

> I've not examined the 4-cylinder in
> as much detail but on the
V8 the little-end is free to slide
> the full exposed width of the gudgeon
pin, and the
> 4-cylinder does look the same.  With the big-end on the
> crank
then the only way it can move sideways is if the crank
> has some end-play,
the big-end has some float on its
> journal, or the bearings at both ends are
very worn allowing
> it to rock.  If you can slide the whole con-rod i.e.
>
both big and little ends are sliding back and fore the same
> amount then it
is the first two, but if the big end is
> remaining in position while the
little end rocks from side
> to side then it is the third option.  Some
movement is
> almost inevitable as there must be some clearance in the
>
bearings.  Multiply the clearance in the big-end by the
> ratio of the big-end
width to the con rods length and you
> will get an idea of how much movement
there may be at the
> little end.
> 
> PaulH.