Hey, i've got a set of pistons that i was told were CTR when i bought them. i'm selling them now so i don't care if i got ripped off i just want to indentify the pistons.

The only markings on it are PCTX - which i've read means that they are high compression CTR pistons. THe only problem is they don't have the black bottom half that most CTR pistons have. I was wondering if these could be an aftermarket CTR piston. What do you guys think. here's pictures:



Here's the one that says PCTX: (Piston 1)

(Piston 2)

(Piston 3)

(Piston 4)


Any help would be appreciated. thanks.

 

the dome sure as hell looks exactly like CTR dome, not like the flatter PR3 dome. anyone know what these are?

 

you sure the sides werent sanded away to cover up wear marks?

 

when u talk about black bottom half , ur refering to the piston skirt coating that reduces friction? yeh, those seem to be ctr after market copys

 

i don't know, the sides didn't look sanded.

so these must be aftermarket copies? i can't find any company that sells CTR pistons without the coating.

 

i wonder if RS does

 

yes RS sells them

 

i was always under the impression that coating wears off very quickly and embeds itself onto the cylinder walls.....They look to be used, so that may very well be the case.

 

when i had the coations on all the CTRs, there are still traces of the black coating, on these, it doesnt seem to be even coated, before, does RS pistons have the coatings, i remember a guy telling me bout how they make the cast ctr pistons but i dont know if they are coated