GDB Impreza RS2.5 Supercharger system/s - Page 6 - Subaru Impreza GC8 & RS Forum & Community: RS25.com
 
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GDB Impreza RS2.5 Supercharger system/s
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Old 12-26-2008, 03:38 PM   #51
Shiffy
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I'm glad to hear the boost CAN be raised. It gives us room for improvement.

Like when I blow this block I can build another one with lower compression pistons and jack up the boost.

So does a self contained unit require any maintenance. Lube changes and such?
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Old 12-26-2008, 06:09 PM   #52
ElvisC
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Quote:
Originally Posted by Tradewind View Post
The Raptor V SC is self contained, no oil connections at all. No oil connections at all. Just bolt charger to bracket and apart from the obvious air connections to and from charger
Will it include the special oil needed to lube the inner gears?
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Old 12-26-2008, 06:13 PM   #53
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Is this the Piggyback for the kit?

http://www.moristech.com.au/pro-sequ...nterceptor.asp

If so that's pretty solid since it doesn't modify any sensor signals. But without spark control i wouldn't recommend going above 9psi. (assuming the spark advance is ~20-21 degrees @ WOT)

I apologize for the questions.

edit: i see it can change spark timing.

Last edited by ElvisC; 12-26-2008 at 06:19 PM..
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Old 12-27-2008, 02:20 AM   #54
marcf
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Quote:
Originally Posted by Shiffy View Post
Like when I blow this block I can build another one with lower compression pistons and jack up the boost.
Noob question: how does the trade off between higher comp/low boost and low comp/high boost work?
is it something like low end or high end power?

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Originally Posted by Tradewind View Post
The only issue I have noticed was during hard cornering with 1/4 tank of fuel, the fuel sloshes away from the pick up and pump runs dry. This will be normal for this model car and is something people need to keep an eye on if driving the car hard.
Very true, i get this when i've been pushing the car hard, more noticable with right hand turns on low fuel
i've even noticed it with almost 1/2 a tank, so i think our tanks need more baffles

Last edited by marcf; 12-27-2008 at 02:20 AM.. Reason: oops
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Old 12-27-2008, 02:30 AM   #55
DunDunSkeert
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Awesome!!
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Old 12-27-2008, 10:22 PM   #56
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This is a great option for RS guys!

Look at the size of that thing! its soo much smaller compared to other SC's i have seen before.

high compression lagless boost. Sounds awesome to me!
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Old 12-28-2008, 05:53 AM   #57
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tradewind do you have any numbers on the 6.2 psi intercooled kit yet? and / or maybe a dyno video?
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Old 12-28-2008, 06:38 AM   #58
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Quote:
Originally Posted by marcf View Post
Noob question: how does the trade off between higher comp/low boost and low comp/high boost work?
is it something like low end or high end power?
Technically High Compression motors can take boost but you will need high octane fuel to prevent detonation.

Using low compression is basically a buffer, so you can run pump gas (92+) and get the most HP out of it before you experience any kind of knock.
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Old 12-28-2008, 09:47 AM   #59
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thanks elvis... i was curious too
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Old 12-28-2008, 09:55 AM   #60
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trade, im kinda worried about added stress to the crankshaft
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