Topic: Found something interesting in my garage.....

[cb350f-mark]

I found the big one in my garage when I moved in 10 years ago.

The little one is out of my CB350F currently undergoing a rebuild.
The middle one is from my 1980 Triumph Spitfire 1500.
I found the big one in my garage when I moved in 10 years ago. I don't know what it's from. Anyone care to speculate?

Mark.

[scunny]

small diesel ship motor or large truck diesel

[fuzzybutt]

looks like the piston out of a locomotive diesel

[eldar]

It looks like a boat anchor for when you want to get away from teh nagging wife and go fishin!

[tramp]

2500cc single lunger honda

[SD750F]

By the color of the two top rings (orange) I would say they are made out of Viton. So my guess would be a compressor piston.

Scott

[edbikerii]

didn't think of that.  I thought the orange was just rust.  Whatever it is, it is dished for low compression.  If automotive, perhaps a turbo or supercharged application.

What's the black thing in the center of the dish?  Looks like plastic.

[heffay]

based on the plastic and the cutouts at the top of the piston i'm going w/ the compressor idea.

[eldar]

I still like my anchor idea!

[Soos]

That looks like a piston out of a v-16 diesel engine.
How big is it's diameter?
How tall?


Only saw a few sets of pistons for them, but the used ones more often than not looked like the one you have.

You really want to find out?
Find a diesel motor repair place. If they work on Train motors, or the ilk (big mofo diesels) they might know.

It could be a compressor piston as well.
But most compressor pistons I have seen tend to mainly flat topped.

Almost all of the Diesel pistons I have seen have that deep recession in them, helps keep the fuel atomized by keeping it swirling after it is injected into the cylinder.

l8r

[Caaveman82]

It's dead weight because you don't have the block it belongs to?

Home defense system? Some one breaks in just smack em up side the head, that'll do pig, that'll do.

[winnipeg550guy]

Make a cool ashtray if you happen to be a smoker

[cb350f-mark]

The orange looks like rust to me.


The thing in the middle is definitely not plastic. It's some kind of bolt/plug that goes through to the underside. Not sure what the cutouts might be for.




It measures 5 3/4" x 8 1/4"




You're right, it probably would make a good boat anchor although I think my wife would more likely want to get away from me!  I'm always bringing motorcycle/car parts into the house to clean, measure, photograph etc. and she never says a word. She even tolerated my dad and I performing the final assembly on my spitfire engine in our kitchen [Mark rumages through his picture archives and comes up with....]



I like the home defense idea. Maybe I can keep in in the livingroom just for that purpose

I don't really have any need to find out what it's from, just thought you all might find it interesting.

Mark.

[mark]

How about a '50s CAT D-8 ? That was a diesel with a 5-3/4" bore. Not sure what the bolt is about - barnyard repair attempt maybe. Iron ring groove inserts are pretty common in heavy duty stuff.



Happy trails.

[heffay]

Not sure what the cutouts might be for.

valve clearance