Anyone on here know all the differences between these 2? I know a few of the differences but can anyone give me a list of most or all of the things that are different.

Many thanks!!!

 

I think it would be quickes to name the things that are there same,
There are a lot of differences.
Head
Rods
Pistons
Cams
Valves springs
Ect

 

Cheers for the reply!

 

There are more too like inlet manifold and exhaust manifold
I would imagine the valves are different too but that would be a guess

 

Thanks! Seems they are actually quite different!

 

st valves are bigger

 

Cheers! Think that'll be enough help.

Thanks for the replies people.

 

Cylinder Head: Bigger inlet valves, raised inlet port of a different size, exhaust port is marginally different but it's nothing worth writing about, valve springs are different, cams (both) are different, obviously the inlet cam pulley is different, combustion chamber is different, VVT system is obviously in there, even the rocker cover mounting bolts are different

Block: Different pistons and rods, sump may be different too?

Misc: Different inlet and exhaust manifolds, the fuel system is completely different (returnless)

 

the 170 engine has about 50bhp more lol

stick with the blacktop mate, you know it will be a lot easier than a duratec

 

Block on the st is a different casting. Or at least the ones I had were differnt to the focus and mondeo blacktops I had at the time too.

 

Fairly sure the pistons and rods are not the same as a blacktop

 

I was listing some of the differences