Trying to verify these are htcc 4.060 Bore 113 pistons.

 

If the rim of the pistons are chamfered, then they are HTCC pistons. Use a Vernier caliper to measure the bore.

http://www.ebay.com/itm/HARLEY-SCREA...item3cd71e0013

 

they do have like a groove a little in from the edge...more like they are slightly dished.

 

As you can see in this Picture the chamfering is quite pronounced on htcc pistons

 

OK, so I'm a dumbass. What is htcc?

 

If you look at my picture from my original post.....it does not look like that. Is that a scream in eagle 113 piston?

 

Hey Crazy HTCC is a term used for High Torque Combustion Chamber.

And yes that picture does show 103 SE piston for reference but a 113 would look mighty close to same as far as i know that is the shape of any set up of htcc pistons

 

awesome. thanks. it looks like what i have in are the correct pistons. I have a set of 95 htcc pistons in a box and they look a lot different. much higher dome.

 

Thanks. Is that a generic term or a proprietary term for Harley or some other manufacturer?

 

Can't answer that directly, but, Buell used a similar design and called it the Thunderstorm head(98-02). 15degree dome in the heads, but 10degree on the pistons, of course, it's really easy to add a 15degree piston for better quench.

Chase