karlos-007

Hi

I after some information on cosworth short block assembly of the shelf.

What is the power rating on this lump?

the shreksta

iTrader: (20)

http://www.powerstation.org.uk/subaru_cosworth.asp

Shaun

I pushed my old Cossie lump past 600bhp..... but not that I would recommend that in reality.

karlos-007

Wow over 600bhp that is impressive, what engine management system did you run Alcatek?

To get 500 wheel horse power on the wheels what is the power target on the crank?

chopperman

About 610bhp @the crank. There is about 21.8% loss on the scooby.

stevie1982

iTrader: (16)

That is some impressive figures from a 2.5 lump, bet it's brutal on as a road car with torque all over the range, so 4k for just the short block now there's food for thought when the warranty is up in May :-)

stevie1982

iTrader: (16)

Out on curiosity how come this cosworth built engine can handle such high power where most people and tuners would suggest not pushing the 2.5 subaru block when forged past 450/450 even if it was pinned etc so how come this can take so much more

Shaun

There is no difference..... it's the same block!

It's as much to do with the mapper imo as it is the crap block. A little bit of luck was obviously on my side..... Like I said though I wouldn't recommend it.

Shaun

It ended up making 540bhp at the fly on VPower and made an additional 85bhp on Q16 race fuel. IIRC I had about 530 at the hubs on Q16.

MOTORS S GT

iTrader: (2)

The block casings are std out the box Subaru, the only rated to 600bhp are the pistons & rods, there is the billet crank option, but your block will fail well before anything else, see if they give a warranty on anything !

karlos-007

Cosworth warranty is just on the first start-up only.

stockcar

closed deck inserts or pegging min requirement on that type of build IMO..............

T5NYW

iTrader: (4)

+1

IggyRB320

iTrader: (9)

Does the CS400 have pegged liners or CDB work?

chopperman

I'm pretty sure their semi closed deck standard STi block mate.

Shaun

Normal block!