046 and 064 piston differences?

[ccronin]

so I have a box of 4 Pistons. I know 2 are 046 and 2 are 064. Problem is I don't know which is which. Can someone help me out?Is there one or two measurements I can check?

 

[Deets066]

In between the piston pin bosses will be narrower on the 64 Pistons

 

[ccronin]

Thanks!

 

[Redfin]

Funny thing you posted this. Ive been searching around today looking for a replacement piston for a damaged 46 jug.

064 has a taller crown and longer skirt. Mike Lee said about 1mm on the crown. I havent got a definate on the skirt yet between the two.

I was also looking at the meteor to see how it compares to the oem 46 piston.

 

[Deets066]

Funny thing you posted this. Ive been searching around today looking for a replacement piston for a damaged 46 jug.

064 has a taller crown and longer skirt. Mike Lee said about 1mm on the crown. I havent got a definate on the skirt yet between the two.

I was also looking at the meteor to see how it compares to the oem 46 piston.

Some say you need to trim the skirts a little but the two I have done didn't hit the crank. I did put a nice big bevel on the inside of the skirts though. They do make for a good runner in a 46

 

[ccronin]

So you are saying I can use an 064 piston in an 046?

 

[huskihl]

So you are saying I can use an 064 piston in an 046?

It's a mm or so taller from pin to crown. Head or piston would have to be machined

 

[Deets066]

Yeah it involves machine work, but all the good runners need machine work anyway