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Cosworth CS600 series High Performance Subaru EJ25 long block?


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7 replies to this topic

#1 porcupine73

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Posted 21 April 2007 - 06:30 AM

Have you guys heard of this Cosworth CS600 series High Performance Subaru EJ25 long block and if so what do you think? I'm sure it's not cheap...

Says it starts with a new Subaru EJ257 semi closed deck block

• New Subaru EJ25 STI Engine case
• New Subaru EJ25 STI Forged Crankshaft
• Optional Billet Cosworth Crankshaft (CS600X)
• Cosworth Forged H-beam Connecting Rods
• Cosworth Forged Pistons (CR 8.2:1)
• Cosworth motorsport Tri-metal bearings
• Balanced to within .5 gram
• Complete blue-print assembly
• Enlarged Intake and Exhaust ports.
• Large diameter stainless steel intake valves.
• Large diameter Inconel exhaust valves.
• Hi Rev, Dual valve springs
• Titanium Retainers
• Hardened Steel spring platforms.
• Multi angle valve job
• Machined port finish
• Knife edge port divider
• Cosworth S2 High lift camshafts
• Valve lash set
• Cosworth high pressure oil pump
• Cam covers
• Cosworth serial number

Posted Image

#2 WRX2FFU

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Posted 21 April 2007 - 11:30 AM

I've heard of it. It's plus 12k and will hold like 600whp. YAY!

Nice stocking stuffer for sure:lol:

#3 Kilroy

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Posted 22 April 2007 - 06:57 PM

:eek: :slobber: :slobber: :slobber:

#4 nipper

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Posted 22 April 2007 - 07:45 PM

Here in hell was it when Blu threw a rod?


grrrrrr

nipper

#5 86BRATMAN

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Posted 22 April 2007 - 08:50 PM

will hold like 600whp.


Well thats not very impressive. I know two people from a local forum putting down 495 and 520 awhp respectively on stock internalled STi's, with the proper support.

#6 Manarius

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Posted 23 April 2007 - 05:30 PM

Well thats not very impressive. I know two people from a local forum putting down 495 and 520 awhp respectively on stock internalled STi's, with the proper support.

One guy got 400whp on a stock internalled EJ22T....

#7 jamal

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Posted 23 April 2007 - 06:13 PM

Well thats not very impressive. I know two people from a local forum putting down 495 and 520 awhp respectively on stock internalled STi's, with the proper support.


The key point is reliability on a race track.

That's fine for driving around and short pulls on the freeway, but they're pretty likely to bend a rod with extended track use. 500 chp is really pushing it for a 2.5l, especially if you're racing, due to cooling issues.

#8 ballitch

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Posted 23 April 2007 - 10:01 PM

that block and those heads are MADE for a race car, you can rev the crap out of it with no problem and race all day on it. its not the whp that makes it good, its the fact that it wont grenade on you if you take it to the track for a day. way too much money though, jesus that thing is expensive. and IIRC the crank has a 84mm stroke...compared to the stock 79mm.


~Josh~




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