can anyone tell me if this piston is a forged one or a standard zetec piston? the bore size is 86mm, i can't see any numbers but hopefully the valve cut out may give it away??

any help would be great

 

whip the sump off and see.

 

and do what mate?

 

std zetec ones dont have a cut out for the valve clearance.

 

thats exactly what I thought, how can I find out what they are??

thanks for the replies

 

Looks like a Vauxhall C20XE piston. Unlikely to be forged, most likely LPC - however this is fine!

There are no OE 86mm Zetec pistons, so that answers that question!


As seen here:

 

if its a silver top, can tell u they aint standard 1.6 or 1.8 ones, not sure bowt 2.0, can see they got a ring round them looking like compresion has been lowerd, but have pockets for the valves 2, wat u running,

 

clarkesss004.jpg?t=1221331241

thease are c20let pistons i fitted to my zetec?

 

saying that they do look more like xe pistons ie no dish

 

its def not a 2.0l piston. (blacktop) does look like c20let .measure the bore

 

but look at the dish in my lets compaired to the dish in the xe pistons?

 

It will have a name or code on the backs of the pistons like this,



Mine being Accrilite as you can see.

Vaux piston, IIRC are Mahle so take a look note down the code and check it.

 

my pistons look identical to sa pjo's, are these any good? im only asking as im rebuilding the car, ive been sourcing parts for the following engine:
refurbished 2.0 (not 2.1) zetec block,
balanced crank and pulley
wiseco forged low compression pistons
farndon h section rods

im building this new engine with the intention of mating it with either a gt turbo or a stage 3 hybrid t3 with the boost set to between 15 - 20psi depending on how the fueling is

 

i did measure the broes and it is 86mm

 

one thing i did notice is that there was no decompression plate

 

sorry i did mean c20xe.. they are good but depends how high power you want.. not sure the limit

 

well im after a reliable 200+, 230 would be nice but im more interested with the torque and how it drives, I want it to pull nd pull and pull right up to 6000rpm, i think I will continue with my first plans and sell this block as it is and build the steel one for piece of mind

 

i know the pics shite, but these are standard pistons from a 2ltr silvertop zetec

 

you a star mate, thanks very much, at least I can rule out the possibility of someone just wacking a standard bottom end in, im going to put this block on ebay tonight, should sell for around the400 mark I hope???