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Old 04-22-2008, 12:59 AM   #1
Dyno Flash
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Default Update on my '05 Project STI

My STI has been down for what seemed like an enternity as I went about building myself a built Subaru motor on a budget

I am a Cosworth dealer and love Cosworth stuff - (its really amazing goods) but they do not offer a sleeved block which I feel is needed for anything above 30 psi

Therefore, I started to review my options and decided to send my existing block to Darton Sleeves in Ca for instalation of their ductile iron sleves, this process consumed about 5 weeks as the box made its way out 5 business days to CA and back again and the wait time at Darton. I like the way Darton does the sleeves and feel they will work well. Time will tell.

Thereafter, a line bore was needed to re-align the main bores after the pressing in of the sleeves.

The crank was balanced to ridiculous smoothness and a polish job on the journals.

Cosworth bearings were used throughout.

Ross pistons and arrow rods were selected.

Super Tech came through with .5 mm oversized stanless and inconel valves and springs and retainers.

We sent the head to be flowed and masterfully ported for a 23% gain in flow.

I am using GSC 272 cams which I have had good results with on several customer cars.

The set up was rounded off with a super flow Cosworth oil pump and large capacity oil pan.

I spent the last few days lovingly assembling the motor and making everthing just right.

Today master tech Baldy a.k.a Vin Disel Jr. installed my engine for me and I fired it up without any mishaps.

I was immediatly impressed as I needed a total of 29% more fuel at 7,000 rpms at 19 psi of boost to dial in the tune which shows me its flowing huge amounts of additional air at that rpms.

I am super happy to be back on the road in my Subaru and can't believe how I survived 5 months without my STI. Its been a long time.

I will be posting some videos and dyno sheets in the days to come as i get some break in miles under my belt.

Al
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Old 04-22-2008, 01:32 AM   #2
project_skyline
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Looks like a good setup.

Are you still running the 35r?

Cant wait to see whats in store.
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Old 04-22-2008, 01:44 AM   #3
bubba03wrx
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welcome back al. I was wondering when you were gonna start posting again.
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Old 04-22-2008, 08:41 AM   #4
wrxhard
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Sounds good al!!! 29% is huge. Congrats on the build! Can't wait for numbers!

edit: Results, can't wait for results... sorry
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Old 04-22-2008, 08:46 AM   #5
jigga
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Quote:
Originally Posted by Dyno Flash View Post
I am super happy to be back on the road in my Subaru and can't believe how I survived 5 months without my STI. Its been a long time
Yeh, I hear you... Mine's been off the road for 7 months now, and I'm losing patience...
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Old 04-22-2008, 12:01 PM   #6
Illusive
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23% gain in flow measured against what?

is that the intake ports, exhaust ports combined (IE whole head flowed)

or just the intake side / and or just exhaust side?

how much lift was the 23% gain measured in?
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Old 04-22-2008, 12:47 PM   #7
Redline927
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Need Videos!!
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Old 04-22-2008, 01:22 PM   #8
stickman
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would of been nice to have pics of the building process.
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Old 04-22-2008, 06:16 PM   #9
Parker @ COBB
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good luck Al.

Hope she fly's down the track.
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Old 04-22-2008, 09:27 PM   #10
perrin247
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Good job Al...now get my motor back togther for me!!!

Oh and I want a ride when I come pick my longblock.
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Old 04-22-2008, 10:35 PM   #11
spoolindc2
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Good work Al, for a while I was beginning to think you gave up on the subaru with your evo consuming so much time.

The build looks solid and if your stock block could take 545 whp, I cant imagine what this setup will obtain once broken in and tuned properly. Does this setup have what it takes to get yourself a 10 second slip?

NEED MORE VIDEOS, I FEEL DEPRIVED!!!!!
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Old 04-22-2008, 11:08 PM   #12
Prevent
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Bro, post some pics.
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Old 04-23-2008, 09:37 AM   #13
wcbjr
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Al, what is your method for oil priming on a fresh engine?
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Old 04-23-2008, 10:13 AM   #14
shvrdavid
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I am curious to see how those cams do...

More than a few people have had very good results with them, getting a nice torque curve...
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Old 04-23-2008, 11:41 AM   #15
Dyno Flash
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Today I am having the HFS 5 alcohol kit installed as with the new head work I was maxing out my injectors at 22 psi at 7500

Previously my 850s with double pumper where good for 564 whp at 7,000 rpms with the BR double pumper

It seems I am making a lot more power with much less boost and that the top end is much stronger

I will take some pictures of the work today and a video

Al
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Old 04-23-2008, 11:44 AM   #16
Prevent
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wanna give a shotout?

Are you going to use your old turbo setup, or upgrade bigger with a built engine?
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Old 04-23-2008, 01:03 PM   #17
wrxhard
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Quote:
Originally Posted by Dyno Flash View Post
I will take some pictures of the work today and a video

Al
Yaaayyyyyy!!! Video!!!
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Old 04-23-2008, 01:12 PM   #18
Gilmore25
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Quote:
Originally Posted by Dyno Flash View Post
Today I am having the HFS 5 alcohol kit installed as with the new head work I was maxing out my injectors at 22 psi at 7500

Previously my 850s with double pumper where good for 564 whp at 7,000 rpms with the BR double pumper

It seems I am making a lot more power with much less boost and that the top end is much stronger

I will take some pictures of the work today and a video

Al


Looks like it's time for bigger injectors and turbo while you're at it
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Old 04-23-2008, 07:07 PM   #19
spoolindc2
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turbo should be sufficient... that gt-35r could suck in a small child lol...
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Old 04-24-2008, 03:37 PM   #20
Dyno Flash
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It will be intesresting to see what the turbo can support with a decent head and cams


On the evos we have made near 700 whp on a Gt35 and 747 on a so called HTA Gt35

I would expect this turbo is good for mid 600 whp - we'll see if the engine is happy !
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Old 04-24-2008, 04:19 PM   #21
DoctorNick
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Why did you go for 1/2mm oversized instead of the 1mm oversized valves?
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Old 04-24-2008, 04:44 PM   #22
Boxer112
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bump for more info
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Old 04-24-2008, 05:52 PM   #23
modaddict
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would love to hear more reviews on the gsc cams.......
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Old 04-24-2008, 10:13 PM   #24
Dyno Flash
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Quote:
Originally Posted by DoctorNick View Post
Why did you go for 1/2mm oversized instead of the 1mm oversized valves?
If bigger was always better every cam would be a 360 duration

The intended power band on my car is from 5,000 - 8,000 I felt the .5 would be better suited to the application.

The head flow data indicates the valves are plenty.

The GSC cams are a very good street cam. I have had nothing but great results with them.

Al
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Old 04-24-2008, 10:18 PM   #25
spoolindc2
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post the damn video alrady AL!!!!
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