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Old 09-02-2014, 04:04 PM   #1
TopSpeed
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Default Used 2004-06 STi Cosworth CNC Ported Big Valve Cylinder Heads **Price Drop**

***SOLD***

We have a used set of 2004-06 STi Cosworth CNC Ported Big Valve Cylinder Heads with Cams that have been completely disassembled, cleaned, everything checked, and re-assembled up for sale. These heads are 100% ready to install and will require nothing but double checking the clearances after bolted to the short block (which should be done on every assembly).

Here is the part number and the details from Cosworth:

SB8010 - Subaru WRX STI EJ25 (2.5L) Pr 2004-2006 w/ KK3766 Camshafts (USA & MY06 Japan/Euro) Electronic Throttle - MSRP $6068 + Shipping.


Big Valve Cylinder Heads

For over 40 years, Cosworth has been the leader in innovative multi-valve cylinder head design for both racing and high performance production cars. The Cosworth CNC Ported Big Valve Cylinder head range is the latest advancement. Modified from new OE cylinder head castings, substantial gas flow improvements and upgraded valve train components offer superior performance for your high performance engine.
Each original cylinder head design is carefully evaluated and tested to establish the improvements required to meet the target performance level. Hours of testing and flow bench validation are used to determine the best advanced port design yielding maximum usable power and response. However, there is more to cylinder head design than just maximum flow. It is critical that port velocity is maintained to ensure drivability and valve train components are matched to guarantee reliable performance. Once all of these factors have been tested and validated, the final port contour is digitized. Using the digitized program, we then reshape both intake and exhaust ports using a 5 axis CNC mill producing an accurate and consistent port shape every time. In addition to re-shaping and enlarging the intake and exhaust ports, most Big Valve Cylinder heads feature a re-shaped combustion chamber to un-shroud the valves increasing air flow and performance. After machining, each cylinder head receives a multi-angle high performance valve job on our precision NewenŽ CNC valve seat cutter. Then each cylinder head is ultrasonically cleaned, serialized and finally hand assembled with select high performance valve train components, ready to install on your engine.
Key Features:
All new OE Castings
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
Reshaped combustion chamber on most applications
Flow bench proven design
Dynamometer tested
Machined Cosworth logo
Precision multi-angle valve job
Pre-assembled, ready to install
Machined port bore finish
Knife edge port divider


We are offering these heads for **SOLD** including the shipping with in the Continental USA. Again, these heads are over $6000 new and this particular set is as close to that as you'll get. Please let me know if you have any questions - mike@topspeedtuned.com or you can call 678-297-7770.

Thanks for looking!

All of the pictures can bee seen here: Cosworth Heads













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Last edited by TopSpeed; 07-15-2015 at 09:11 AM.
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Old 09-02-2014, 05:14 PM   #2
25rsti
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Man if these weren't avcs heads.
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Old 09-17-2014, 11:07 PM   #3
davidsti1
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Dream!
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Old 09-18-2014, 01:51 AM   #4
hobo2701
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man wish i had the spare loot for these would go well with my cosworth bottom end. glws!
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Old 09-19-2014, 11:46 AM   #5
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Default

Quote:
Originally Posted by 25rsti View Post
Man if these weren't avcs heads.
The AVCS can always be plugged

Quote:
Originally Posted by davidsti1 View Post
Dream!
Quote:
Originally Posted by hobo2701 View Post
man wish i had the spare loot for these would go well with my cosworth bottom end. glws!
Thanks guys! If you know of anyone who wants them please let me know
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Old 09-19-2014, 08:10 PM   #6
25rsti
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I would love to buy these but the solenoids get in the way of my 2.5i intake manifold.
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Old 10-05-2014, 01:09 AM   #7
derkenblosh
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Too bad my budget for heads is 2500 :-( ... Unless I find a built short block for under 3k

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Old 10-07-2014, 09:43 AM   #8
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Quote:
Originally Posted by derkenblosh View Post
Too bad my budget for heads is 2500 :-( ... Unless I find a built short block for under 3k

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What kind of short block are you looking to build? What power level do you want to support?
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Old 10-07-2014, 09:47 AM   #9
derkenblosh
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Why? Thinking of building something and selling this as a long block?



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Old 10-07-2014, 10:00 AM   #10
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Quote:
Originally Posted by derkenblosh View Post
Why? Thinking of building something and selling this as a long block?



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Just curious but yes, that was one option.
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Old 10-29-2014, 04:20 PM   #11
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New price! Let me know if you have any questions!
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Old 02-20-2015, 01:16 PM   #12
rosstitute
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Are these heads still available?
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Old 02-23-2015, 08:09 PM   #13
25rsti
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Don't think so, I was going to buy them but someone must've gotten them before me.
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Old 02-24-2015, 08:48 AM   #14
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Quote:
Originally Posted by 25rsti View Post
Don't think so, I was going to buy them but someone must've gotten them before me.
The heads are still available for sale. I just spoke with rosstitute before having the chance to reply.

Bring me an offer people
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Old 07-02-2015, 06:58 AM   #15
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Still for sale?
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Old 07-02-2015, 10:25 AM   #16
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Yes they are; replied to your PM.
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Old 07-11-2015, 06:50 PM   #17
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Email Mike
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