Piston pictures 30 vs. std

[DCSLADE]

1973 50 HP Evinrude 50373R
I'm about to put my engine back together after having the bottom cylinder bored. But I noticed the 30 over piston is somewhat different than my standard one.
1) The ports are shaped different
2) The ring groves are farther from the top
Is this normal?
Thanks

 

[R.Johnson]

Re: Piston pictures 30 vs. std

Yes! that is normal. Wha piston's are you using?

 

[DCSLADE]

Re: Piston pictures 30 vs. std

Ok, I can not get this picture thing to work. Can anyone help?

 

[DCSLADE]

Re: Piston pictures 30 vs. std

They are both OMC. One is an original from my 73 and the oversize is a new 30 over.

 

[DCSLADE]

Re: Piston pictures 30 vs. std

2nd try on the pictures...

 

[Solittle]

Re: Piston pictures 30 vs. std

No picture here - -

 

[Silvertip]

Re: Piston pictures 30 vs. std

You need to have your pictures hosted by a web site like Photobucket.com. Its free. Then post the link to the pictures in your message.

 

[DCSLADE]

Re: Piston pictures 30 vs. std

got it, thanks
http://i89.photobucket.com/albums/k...427/Picture004.jpg[url] hopefully this works

 

[DCSLADE]

Re: Piston pictures 30 vs. std

Ok, here are the pictures. Your advice would be much appreciated.
i89.photobucket.com/albums/k212/dcs...om/albums/k212/dcslade427/Picture004.jpg[url]

 

[DCSLADE]

Re: Piston pictures 30 vs. std

Thank you R.Johnson. While the sizes are right on the ports are very different. (Check out the photos above)
Are you sure this is normal?
Thanks