Identify oversize piston

[rdlsz24]

This was in a parts box from one and a half 200x's I bought a couple months ago. 66mm. It is in really good shape. Is it an oversized oem? It doesn't look like the Wiseco I put in my 200x last year.

http://img.photobucket.com/albums/v603/rdlsz24/ATC200x/piston1.jpg

http://img.photobucket.com/albums/v603/rdlsz24/ATC200x/piston2.jpg6


This Big Al's piston was also in the parts lot, but looks kinda toasted. What do you think?

http://img.photobucket.com/albums/v603/rdlsz24/ATC200x/piston3.jpg

http://img.photobucket.com/albums/v603/rdlsz24/ATC200x/piston4.jpg

http://img.photobucket.com/albums/v603/rdlsz24/ATC200x/piston5.jpg

Rob

[shortline10]

The 200x piston is 1mm over stock bore . stock bore is 65mm . The bapp atc90 piston looks to be shot and good for a conversation piece now .

[shortline10]

What size is the bapp piston ? For a 200x?

[rdlsz24]

Right the top piston is 66mm, but what brand? Yes the BAPP piston is from a 200x. Haven't measured the bore though.

Rob

[shortline10]

Right the top piston is 66mm, but what brand? Yes the BAPP piston is from a 200x. Haven't measured the bore though.

Rob

Take a pic of the inside of the flat top piston so I cam see the markings if any .

I know the bapp piston is junk but if you want to sell it I would like to have it for a reference piece . Please let me know :beer

[Dirtcrasher]

That BAPP must be a 12:1 aaye??

[rdlsz24]

The only marking I can see on the inside of the first piston is ART. Does that mean anything to you shortline?
http://img.photobucket.com/albums/v603/rdlsz24/ATC200x/piston6.jpg

I measured the BAPP one with my calipers, and it is also 66mm. I sent you a PM about it.

Rob

[shortline10]

Art I believe is a stock honda oem piston .

[rdlsz24]

Is Sudco the same as oem? http://www.sudco.com/art.html

Rob

[shortline10]

I didnt think so but according to that web site they are . Back in the day sudco made some kool parts for the atc90 .