Using oversized piston rings

Story of my life... :-(

--
Ivan Reid, Electronic & Computer Engineering, ___ CMS Collaboration,
Brunel University. Ivan.Reid@[brunel.ac.uk|cern.ch] Room 40-1-B12, CERN
GSX600F, RG250WD, DT175MX-MIA "You Porsche. Me pass!" DoD #484 JKLO#003, 005
WP7# 3000 LC Unit #2368 (tinlc) UKMC#00009 BOTAFOT#16 UKRMMA#7 (Hon)
KotPT -- "for stupidity above and beyond the call of duty".

 

there isn't any problem with fitting rings which start out as ".50"
oversize.
that's not a half inch. it's a half millimeter, actually 0.020" oversize.
i always check and fit the ring gap in the bore/s in which they'll be used.
usually the rings are plain ended and can be filed to a proper end gap
clearance.

i saw someone said that rings are "ground round"
thats not so.
also, even the brand "perfect circle" with the spiral seal will tolerate a
twenty thou smaller bore.
there's no magic to properly assembling an engine.
there are a lot of old wive's tales out there, tho.
sammm

 

I know.....

Thanks

 

And the ring's circularity depends on the relation between the amount
the it is oversized and the bore diameter. For instance, a 0.50mm
oversized ring in a 52mm bore (175cc twin) would be under more stress
than a 0.50mm oversized ring in a 67 mm bore (360cc twin).

 

Indeed.

Not a good idea in any way.

The cost difference is not worth the trouble.

Something like marriage and divorce....

Peter V

 

Indeed.

Not a good idea in any way.

The cost difference is not worth the trouble.

Something like marriage and divorce....

Peter V

 

Indeed.

Not a good idea in any way.

The cost difference is not worth the trouble.

Something like marriage and divorce....

Peter V

 

Indeed.

Not a good idea in any way.

The cost difference is not worth the trouble.

Something like marriage and divorce....

Peter V

 

Indeed.

Not a good idea in any way.

The cost difference is not worth the trouble.

Something like marriage and divorce....

Peter V