Im wondering if anyone has an old ctr piston maybe from a blown engine that they are possibly willing to cut in half on a band saw etc ?


The reason I ask is I am considering milling some material off of a set of ctr slugs I have to flatten out the peak for better flame travel and more reasonable compression ratio. I am concerned about strength which brings me to my original question if anyone is willing to cut an old one in half so I can see what kind of material thickness im working with. Seeing as its the heaviest cast oem piston Honda makes I belive the dome to be solid cast material all the way through in which case I have no concerns. I only have 4 bnib ctr pistons so I cant cut one in half and I don't want to find out my thinking is wrong by starting to mill and find out I cant remove as much material as I think.

 

I would sell them and just use jdm type r pistons.

 

Anyone In ? I know there has got to be lots of people with old ctr pistons kicking around....

Someone must be willing to cut one for some further education to the community ?

I will post pics throughout the whole milling process aswell as weight matching the pistons and finally cc the new modified domes

 

Odds are not in your favor. Finding someone with a CTR piston, willing to cut it in half, and that has a band saw available to use could be very difficult.

What kind of motor are you building? There are probably shelf pistons available that will save you all the time/hassle.

 

If you have the piston, why not test its density? Get someone to weigh it, in grams, then get a graduated cylinder to figure out the volume. Calculate density, look up the density of aluminum. I know the piston is an alloy, but if theres a big empy space of air it would show a greatly lower density than it should. If anything it should show up as denser than straight aluminum if it truly is solid throughout.