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Old 10-31-2008, 01:16 AM   #1
alfriedesq
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Default '05 STI with full Cosworth long block and Buschur FS635 cracks 600 on pump gas with m

This is a really well sorted full Cosworth build up we just completed

Cosworth Long Block
Cosworth Cams
Magnus Intake
P & K Fuel system
Periin Gt35 turbo kit and fmic set up
Perrin header and Perrin exhuast
Aqumist HFS 1
AEM EMS tuned by Dyno Flash

93 octane pump gas and alchy !

This dyno sheet is compared to me car which apparently spools up mush harder and pulls the same up top (but with more boost)

The Coswirth block is kept under 30 psi as the unit is not sleeved

Its amazing how well thet cosworth engine revs out - it really is smooth and revs fast.

This is the FS635 on this car vs my car with GHT86



















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Last edited by alfriedesq; 10-31-2008 at 11:18 AM.
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Old 10-31-2008, 01:55 AM   #2
vhalin
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beastly. not bad spool for a 35r
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Old 10-31-2008, 01:57 AM   #3
lethal.adv
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nice numbers and powerband!
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Old 10-31-2008, 01:59 AM   #4
sti_777
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Flipping sweet! Cosworth FTMFW!
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Old 10-31-2008, 11:24 AM   #5
alfriedesq
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It was interesting to note the variation between the power band of my stock intake HTA85 STI and the Magnus FS635 STI above

Remains to be seen how much the intake manifold is effecting the low end spool or if it is more a result of the turbo
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Old 10-31-2008, 11:31 AM   #6
jigga
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^^curious about this also...

How do you intend to find out definitively though?
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Old 10-31-2008, 11:56 AM   #7
alfriedesq
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Quote:
Originally Posted by jigga View Post
^^curious about this also...

How do you intend to find out definitively though?
You would need to do A- B testing on the same car with just changing the part you are testing

Here we are running two 05 STI's with totally different parts - hard to reach any conlcusions
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Old 10-31-2008, 12:32 PM   #8
D Money
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what is a fs365 turbo? never heard of it.

So we don't have any info on the magnus intake and if it's really worth it?
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Old 10-31-2008, 01:05 PM   #9
Paul
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one of buschurs new turbos.....
FS635: fast spool and 635whp was the number they first put down with it
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Old 10-31-2008, 01:09 PM   #10
spoolinsti05
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Quote:
Originally Posted by D Money View Post
what is a fs365 turbo? never heard of it.

So we don't have any info on the magnus intake and if it's really worth it?
It's pretty much a HTA86 with a smaller back housing I think witch will help condone faster spool. Work done on exhaust side of the turbine will dramatically improve spool over the compressor side. Both would be dominate!

Al talk to your customer and see if you could barrow his turbo for a pull on your car and swap them out with no tuning to see some result's. That would be very interesting to see.
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Old 10-31-2008, 02:33 PM   #11
alfriedesq
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Video of the Cosworth car and some video of my STI on the road

http://www.youtube.com/watch?v=NF-T7Gnq3lY
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Old 10-31-2008, 03:08 PM   #12
Steve.804
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wow looks like 300ft/lbs under 4k rpm and it's just starting to turn on. That is no joke! That powerband would make for an incredible street car.

I thought the perrin headers get a little restrictive at these power levels?
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Old 10-31-2008, 03:16 PM   #13
alfriedesq
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We want to remove the Perrin headers for sure - too many things to do too little time !
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Old 10-31-2008, 03:28 PM   #14
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Quote:
Originally Posted by alfriedesq View Post
We want to remove the Perrin headers for sure - too many things to do too little time !
Which headers are you going to put on?
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Old 10-31-2008, 04:01 PM   #15
alfriedesq
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Quote:
Originally Posted by sean18337 View Post
Which headers are you going to put on?
I like the Agency Power 4 - 1 units - they are very reaonably priced and mine never cracked
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Old 10-31-2008, 04:23 PM   #16
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nice numbers
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Old 10-31-2008, 04:54 PM   #17
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Why did he choose the magnus intake manifold? Aren't they junk? as far as the welds and build quality?
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Old 10-31-2008, 06:03 PM   #18
garboplateNY88
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"The Coswirth block is kept under 30 psi as the unit is not sleeved"

Isn't that to much psi for non sleeved block it can cause bore distortion at that power level?
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Old 10-31-2008, 06:19 PM   #19
alfriedesq
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Quote:
Originally Posted by ol'skoolwrx View Post
Why did he choose the magnus intake manifold? Aren't they junk? as far as the welds and build quality?
This customer selected many of his parts

While fittament on the Magnus is tough, our master Ferrari tech ported, adjusted and modified it to a perfect fit.

There is no doubt in my mind that the Magnus intake does make significant top end power

NOTE * We have our pre-orders in for the new Cosworth cast manifold which is said to make only top end power power and not loose any low end power. I am sure that anythng from Cosworth is made perfect (except the cams LOL)

Al
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Old 10-31-2008, 06:25 PM   #20
alfriedesq
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Quote:
Originally Posted by garboplateNY88 View Post
"The Coswirth block is kept under 30 psi as the unit is not sleeved"

Isn't that to much psi for non sleeved block it can cause bore distortion at that power level?
Personally, I would not build a Subaru motor without sleeves

This block was the customer's choice before he came to us and it has lasted a long time with his previous set ups including the FP Green and Gt35 in previous trims.

After lots of discussion of risk vs power the customer has elected to stay at 28 psi as a daily driver

If the block distorts then we'll take it out and add the Darton Sleeves

I pushed my stock block to 39 psi before the bores started to slightly oval

Al
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Old 10-31-2008, 06:26 PM   #21
alfriedesq
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I just wanted to add that after 7 1/2 years tuning and modifying Subarus I am just as excited as ever and very optomistic about the new large billet wheel Gt35's and the new stand alones

Subaru FTW !
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Old 10-31-2008, 06:30 PM   #22
garboplateNY88
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"If the block distorts then we'll take it out and add the Darton Sleeves"

How you know if that happens you can't see inside the block?
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Old 10-31-2008, 06:33 PM   #23
AVCSKIDD
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I never understand why people limit boost on stock sleeves the boost doesn't even matter. Its cylinder pressure which is more of a function of Horsepower than it is boost level.

Either way those are good numbers guys, what were the numbers on straight pump gas.
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Old 10-31-2008, 07:01 PM   #24
norexyet
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good numbers al. Thats a noisy motor though.
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Old 10-31-2008, 07:51 PM   #25
Redline927
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Sleeve it and see what it can really do!

Any track time in the future with this thing? looks like an animal.
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