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Discussion Starter #1 (Edited)
Hi

I'm Daniel from Poland

My current project is
Swapping 2.3L Into ST 2.0 block

I want to change the following in my 2.0L focus ST mk3 2017;
Piston heads from RS mk3 2.3
Turbo from RS mk3 2.3
Genuine Ford forged crankshaft 2.3 RS
Manley 2.3 Ecoboost Hbeam Rod set
Manley Ecoboost piston set ST
King main bearing set
King racing tri-metal rod bearings

I want 350HP to 400HP


can anyone describe to me exactly what I have to change in my ST 2.0 when replacing the head with 2.3?
and will there be any problem with this modification?
 

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1,538 Posts
Hi

I'm Daniel from Poland

My current project is
Swapping 2.3L Into ST 2.0 block

I want to change the following in my 2.0L focus ST mk3 2017;
Piston heads from RS mk3 2.3
Turbo from RS mk3 2.3
Genuine Ford forged crankshaft 2.3 RS
Manley 2.3 Ecoboost Hbeam Rod set
Manley Ecoboost piston set ST
King main bearing set
King racing tri-metal rod bearings

I want 350HP to 400HP


can anyone describe to me exactly what I have to change in my ST 2.0 when replacing the head with 2.3?
and will there be any problem with this modification?

You can hit those power numbers with the 2.0.
 

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Discussion Starter #3 (Edited)
Hi
Thanks for the suggestion
I dont want to overload the engine
I heard that it is better swap 2.3 to 2.0 block
I would like to have more power potential for the future (450HP)


1. Second engine complete 2.0 ST (7K miles)
2.Piston heads from RS mk3 2.3 complite (4k miles )
3.Turbo from RS mk3 2.3 (4k miles)
4.Ford Focus Rs Mk3 Cluch And Flywheel

my engine in car has code P0301 (misfire on cylinder) no compression 1 cylinder (12k miles only)
will now be replaced this broken engine
and this broken engine will be renewed

I have already bought parts almost new
















This is my car

 

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Nice Dude. **** If I had both, I would first try the 2.3's turbo and an down pipe exhaust like mine 3'' straight no cats or converter's inter-cooler. First just to save time and see what that does for gain. I had wondered if that was possible. So Congrats!
 

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Using the 2.0 block with a 2.3 crank you end up with a mismatch with the rods and pistons. You have a choice of running to big a squish # and low compression or having custom pistons made. See my mountain road racer build.
 
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