Aftermarket pistons? *pics*

[courterman08]

Today I pulled my spare motor apart to have a look inside. I was told by the previous owner that it is SUPPOSED to be "boost ready." This is what I found...

Are these stock pistons?Before:

After wiped down:

It's hard to tell in the pictures, but they really dip down. And they have milling marks on them. They also have some writing on them:

RA8024 0 50 JFBOT 0 05

*exactly as typed ^^^

The cylinders still have the cross hatching on them.

Also, are these stock valves? The intake runners were ported (forgot to take pictures, sorry)



Any help would be great, thanks in advanced.

[courterman08]

57 views and no one posts? Come on people, please help.

I used a pair of digital calipers (good ones, not jank ones) and found the bore to be 3.51__, and stock bore is supposed to be 3.50__...so I don't know.

[fun240]

No way man, Thats stock block, Stock pistons.

[2FourTee]

Pistons appear stock, and the valves are definitely stock.

[red240ne]

those are definitely stock pistons, but the easiest way to tell is to actually pull them out. You might as well replace the rings if you have the motor sitting out.