Hi!

I'm going to change rods and pistons in my scooby. But i'm confused about the maxpower of the block in my UK 03 STi.. I have heard 450-500 hp will be max if I want to be safe..

Thank you!

Regards

 

Anybody? Plz...

 

Hi there

Hard to say

I would add ARP/Cosworth 260k psi headstuds as minimum with the Cosworth Headgasket

EJ207 block should be OK for 550bhp,above that 14mm headstuds probably will be better option,but this depends on the how much boost you will be running and what turbo you will be running


Jura

 

Alright, thank you for your answer

So 450-500bhp with 14mm headstuds will be safe ?

 

Hi there

We run 11mm ARP headstuds at 490bhp on 2.1L Open Deck Block(WRX block),engine has been build for 500-550bhp

You should be OK with 11mm ARP headstuds at 450-500bhp,but this depends on the what turbo and what boost you will be running

11mm Cosworth 260k psi headstuds have good reviews and people has run them around 550-600bhp without the issue

Jura

 

okey, i will be running original ej207 block, forged pistons and rods, FMIC
the turbo i'm lookin at is Borg Warner S256 , fuel: E85 .. looking for around 450-500bhp

 

Hi there

I still think you should be OK with the 11mm Cosworth 260k psi headstuds or 11mm ARP headstuds on this spec

Have look at 12/14mm RCM headstuds

http://www.rogerclarkmotorsport.co.u...?productID=157


Jura

 

Thank you again! I will have a look at it

 

Don't worry there and good luck

From reading BW S256 can be awesome turbo,you are going with forged 2.0L or do you thinking go with 2.1L?


Jura

 

Thanks I will begin with "only" 2.0L!