Piston ring groove questions

What is the most common (or most likely) reason piston ring grooves become
excessively wide?

Does piston slap contribute to widening of the piston ring grooves?

--
TeGGeR®

For sure excessive piston rock in the bore can cause accelerated ring groove
wear, how worn is worn and how many miles on the engine, maintenance and
driving conditions all are in the mix here. Remember for the most part
piston slap is gone when the engine warms up and it is not all the cylinders
usually, so if all the ring grooves show excessive clearance I don't think
piston slap would cause this.
"TeGGer®" > wrote in message
...
> What is the most common (or most likely) reason piston ring grooves become
> excessively wide?
>
> Does piston slap contribute to widening of the piston ring grooves?
>
> --
> TeGGeR®
>
>



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Besides the obvious cause by high mileage, running at light load and
elevated rpm can reduce gas loading on the rings to the point where they
flutter. This tends to beat both sides of the groove.

"TeGGer®" > wrote in message
...
> What is the most common (or most likely) reason piston ring grooves become
> excessively wide?
>
> Does piston slap contribute to widening of the piston ring grooves?
>
> --
> TeGGeR.
>

"Chas Hurst" > wrote in
:

> "TeGGer®" > wrote in message
> ...
>>
>> What is the most common (or most likely) reason piston ring grooves
>> become excessively wide?
>>
>> Does piston slap contribute to widening of the piston ring grooves?
>>
>
> Besides the obvious cause by high mileage, running at light load and
> elevated rpm can reduce gas loading on the rings to the point where
> they flutter. This tends to beat both sides of the groove.
>


"Light load and elevated rpm".

What sort of driving qualifies as "light load and elevated rpm"? City
driving in too low of a gear, or steady 85mph at 4,000 rpm?

--
TeGGeR®

"TeGGer®" > wrote in message
...
> "Chas Hurst" > wrote in
> :
>
> > "TeGGer." > wrote in message
> > ...
> >>
> >> What is the most common (or most likely) reason piston ring grooves
> >> become excessively wide?
> >>
> >> Does piston slap contribute to widening of the piston ring grooves?
> >>
> >
> > Besides the obvious cause by high mileage, running at light load and
> > elevated rpm can reduce gas loading on the rings to the point where
> > they flutter. This tends to beat both sides of the groove.
> >
>
>
> "Light load and elevated rpm".
>
> What sort of driving qualifies as "light load and elevated rpm"? City
> driving in too low of a gear, or steady 85mph at 4,000 rpm?
>
> --
> TeGGeR.

Exactly that to the first example, 85 mph at 4000 rpm shouldn't be problem
for a modern engine.

"Chas Hurst" > wrote in
:

>
> "TeGGer®" > wrote in message
> ...

>> > Besides the obvious cause by high mileage, running at light load
>> > and elevated rpm can reduce gas loading on the rings to the point
>> > where they flutter. This tends to beat both sides of the groove.
>> >
>>
>>
>> "Light load and elevated rpm".
>>
>> What sort of driving qualifies as "light load and elevated rpm"? City
>> driving in too low of a gear, or steady 85mph at 4,000 rpm?
>>
>
> Exactly that to the first example, 85 mph at 4000 rpm shouldn't be
> problem for a modern engine.
>
>
>


Thanks.

--
TeGGeR®