Buy second hand set of heads, send to Tony Knight. Save yourself Cosworth tax.

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I am only an asshole on the internet :)

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This is all you need to see for motivation...
Cosworth STi 550 hp 100 - 200 km/h ca. 6 sec - YouTube

Rick , I am reading you have a 257 with the following

stock 257 nitrated crank ?
cosworth con rods
ACL race bearings ?
Cosworth pistons ?
compression ratio ?
272 cams ?
oil Pump size ?
Heads are STD , non ported , stock valves ?
sump STD ?
Casing studs ?
head studs ?

correct above & fill in the gaps please

its a ej255 block

Cosworth Pistons, Rods, ACL Bearings, metal gaskets, heads were recond, standard cams valves and everything is same that i know of,

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2010 WRX

Built 2.5 Cosworth
Garret GT35R
ID 725 Injectors
HyperFlow CAI
MMS TBE
Ecutek with Race-Rom
Ksport 8 Piston Front BBK 13"
ksport 4 Piston Rear BBK 13"
TEIN SS-P Coilovers

Pretty sure EJ255 & 257 blocks are the same, the heads is where the difference is (WRX vs STI). Someone correct me if I'm wrong.

As TJ said, get heads done locally.

The more aggressive the cams the more power you can make but you will sacrifice driveability and have a nice lumpy idle. Suss out the actual specs of the cams and work out what you want. Cosworth 272s are less aggressive and have a shorter lift then say Tomei or JUN 272s.

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500+hp and helis on tap, eta - June 2025.

Thats not a built engine, i wouldnt be pushing big boost through that block..

EJ255 has less bore webbing than the EJ257 asfaik...

if u want to make bulk power needs to be close decked and sleeved... id be shitting myself without one.. as well as id want big fk off headstuds..

Cams you want a much higher duration, im running 272/2?? cant remember but i should have gone for some kelfords with a more aggressive cam but im making enough power to not worry about an extra 30-40whp..

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I'm a jockey kunts...

I'm sure Steve knew what he was doing

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2010 WRX

Built 2.5 Cosworth
Garret GT35R
ID 725 Injectors
HyperFlow CAI
MMS TBE
Ecutek with Race-Rom
Ksport 8 Piston Front BBK 13"
ksport 4 Piston Rear BBK 13"
TEIN SS-P Coilovers

^^^^

go read my thread buddy ive been there done all that...

maybe do some research rather than just being a cheque book racer..

__________________
I'm a jockey kunts...

LOL TINO

He's got a 57.7 around Barbs, whats your best time with your current set up?

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Fuck your signature

Burke i did years of reasearch in all the parts for my car, what works what engine setup is the strongest and most reliable, who was capable of building a reliable engine, suspension handling. Literally years of research...

I have modified myself with my own tools and bare hands every single part of that car. Including removing and re-installing the engine, suspension, interior (seats, doors, dash etc), bumpers, fenders, roof vent the list goes on.. So tell me how im a cheque book racer..

And yes i have run that time or faster on the short track at barbs on my very early setup areound 3yrs ago... I have driven my car at AHG, Barbagello, collie, Twighlight series at the motorplex...

Please tell me again how im a cheque book racer...

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I'm a jockey kunts...