Taking the piss

[oldfart]

Shelf wear my arse ....... water damage would be more appropriate.

This sort of stuff gets under my skin, when they blatantly wrongly describe an item.

http://www.ebay.com.au/itm/NOS-Suzuki-OEM-Piston-0-25mm-PE250-RM250-RS250-12110-40601-/121185110962?pt=Motorcycles_Parts_Accessories&hash=item1c37320bb2

[oldyzman]

That is useless, OK if it was some Works thing then maybe could be salvaged somehow.

 I think i have one for sale... maybe kit...

[SlideRulz]

I have a shelf in my workshop that I've managed to headbutt more often than I really should've.
Unless it's an item like a tank or side panel that has been moved around over the years, yes, it's a crap description.

[oldfart]

Walter .... put your glasses on old mate and look at pic 4.   
There is no way I would put that piece of crud in any of my bikes.

[maxvmx]

Don'r bid - easy!

[NSR]

This piston looked the same.  This is how it looks after Greg gave it the hydroblast treatment.   
Would you put it in a motor?  I would like to know because these are rare.

[oldyzman]

Whats it for NSR

[Nathan S]

You make your choice and you try your luck.

I spent a lot of my youth and early adulthood putting together motors with highly questionable parts - sometimes it worked well, sometimes it just worked, sometimes it didn't work at all... But it did give me a pretty solid understanding of what really matters, compared to what makes people feel good.

If I owned NSR's piston, I'd prefer not to use it - but if it is hard to get a better one, then I'd fit it and wouldn't have a moment's worry about it causing me any problems.

[oldyzman]

Who replaces small end bearing every top end rebuild?

[NSR]

Whats it for NSR

It's a 175 SWM Rotax piston.  So a it is pretty tough piece, with a thick single ring. The 175 pistons are becoming harder to get.

   

[oldfart]

Noel .... ring landings look sus along with skirt area .  I would say no don't use it.

[Doc]

I'm a self confessed tin arse but even still I would not use either piston pictured above. Small end bearings and pin I replace whenever I replace the rings. Probably not necessary but it's cheap insurance and peace of mind. In 35 odd years have 'never' had a top end detonate

[NSR]

This is it with the ring on it.  The ring grove is my concern.  Although with the ring on it does not look to bad.  I will still be trying to buy a better one.

[Nathan S]

The ring is still properly supported over the vast majority of its circumference.
What do you expect to be the problem?

[oldyzman]

If it fails it could make the whole thing FUBAR...