Have cylinder and piston but no idea who makes the cylinder.

JE PISTON - PART#183051

ALSO SAYS 993M inside the piston.

Cylinder - no aftermarket marking that i can see

pics:

have you measured the bore and piston ?

the cylinder could be M/Tech or namura other

chooken said:

i havent because i dont have the proper tool to get an accur ate measure

yep - could be namura, cw or mt cylinder. my cw cylinder had an ink stamp on the portion of the sleeve that goes into the bottom end. i forget exactly what it said. i think it did have "cw" & some #'s lol

cross hatching looks good on the cylinder wall from what i can see.

je makes good pistons.

should measure approx. 3.700" for 94 mm cylinder

ROUNDEYEHELMETHEAD said:

the wall is in pretty good shape, nothing that a fingernail grabs onto.  The piston skirt is scored though....motor trashed a lower rod bearing.

I could just take the cylinder to pompton honda and they can measure it right?

My Milenium cyl has a number stamped(Punched in) on the side of it.

RToth said:

ok good to know, i'll double check and if nothing, that rules millenium out.

jones-moto-east said:

they should be able to measure it for you.

are you wanting to measure to determine the bore size so you can buy a new piston? if so, a ruler would prob cut it. if there's no signs of wear on the cylinder walls, it's prob ok. or are you wanting to measure to closely inspect the bore?

i could help out if needed. have calipers @ home, or i could grab a caliper from work no problem if you're just looking to confirm the bore.

It looks like my Namura cylinder, if the breather is silver, then it's 99% a Namura. It can be 90mm or 94mm.
Right Smias?