What differentiates an "ABC" piston from a regular piston?

[Brian Sorgente]

I've heard the term "ABC" piston before but never really understood what the difference was between an ABC piston and a regular piston. What makes them different?

Thanks,

Brian

 

[anthony_marquart]

Almost all high performance sleeves are ABC,.. Aluminum / Brass / Chrome,.. it's the composition,.. In my mind, and ABC sleeve is a normal sleeve.

 

[Brian Sorgente]

Ahh that makes sense. Thanks Anthony.

 

[Eric Canto]

"ABC" refers to an Aluminum piston, in a Brass sleeve, that is Chrome plated. There are a ton of variations such as "AAC" Aluminum piston, Aluminum sleeve that is Chrome plated

"ABN" Aluminum piston, Brass sleeve that is Nickel plated.

Ringed motors...etc.....

 

[bermudadude]

what eric said is right ,,and to add its not the piston per-se its the piston/sleeve set that the design refers to. as u can also have ABC ringed-piston

 

[Brian Sorgente]

Thanks for clearing that up guys.

 

[anthony_marquart]

yep,.. I omitted the the piston.. but my intent was the same..

 

[JimZaremski]

years ago I bought an .18 which was supposed to be an ABC marine engine. The sleeve scored on the first run, and I took it to a co-worker who was a metallurgist. turned out to be a nickel-plated sleeve; 'course the engine was a cheap Chinese knockoff.