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gt30 rotated on a std engine?

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Old 17 July 2010, 12:46 PM
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gus sti8
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Default gt30 rotated on a std engine?

im thinking of changing my turbo and am thinking of going twisted with a 30 till i get a stroker anyone done it and how laggy its a 03 sti with avcs
Old 17 July 2010, 01:49 PM
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banny sti
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Have a read of this fella

http://bbs.22b.com/cgi-bin/ultimateb...c;f=2;t=000209

Banny
Old 17 July 2010, 05:40 PM
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ThePoorMansScooby
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i have a rotated gt30 on a standard 2.5 making 450.6bhp, no problems so far touch wood.
Old 17 July 2010, 06:24 PM
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stealthy55
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why dont you go for a bigger "bolt on" and save a load of money?
Old 17 July 2010, 06:25 PM
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does a GT30 have to be rotated?

Or will it squeeze into the original space?
Old 17 July 2010, 06:32 PM
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jd5217
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Standard GT30 wont fit, however there are a number of GT30 hybrids that use the stock location.

TurboDynamics MD555 range is one.
Old 17 July 2010, 06:35 PM
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stealthy55
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Originally Posted by jd5217
Standard GT30 wont fit, however there are a number of GT30 hybrids that use the stock location.

TurboDynamics MD555 range is one.
yeah but aint that slow?
Old 17 July 2010, 06:38 PM
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Ciaran
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Cost of getting a custom rotated set up made and buying a turbo excluding wastegate is pretty similar in price to buying a custom hybrid GT30
Old 17 July 2010, 06:43 PM
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jd5217
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Originally Posted by stealthy55
yeah but aint that slow?
Would not know, I dont have one.
Old 17 July 2010, 06:53 PM
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stealthy55
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Originally Posted by jd5217
Would not know, I dont have one.
its about time you switched to a proper turbo and i dont mean the 555
Old 17 July 2010, 07:13 PM
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banny sti
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Yes a proper turbo like rotated GT30R
Old 17 July 2010, 07:23 PM
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stealthy55
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Originally Posted by banny sti
Yes a proper turbo like rotated GT30R
any graphs on a standard 2.0 apart from what you hav already posted? if thats the only one then bolt on
Old 17 July 2010, 07:32 PM
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Getting mapped this Friday by Simon
Old 17 July 2010, 07:41 PM
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stealthy55
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Originally Posted by banny sti
Getting mapped this Friday by Simon
totally standard? if so good luck will be interesting to see comparisons bearing in mind theres a "built" 2.0 classic not doing a lot of power to justify rotated imo
Old 17 July 2010, 07:50 PM
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stealthy55
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banny, can you please explain "proper heads" and "jun cams" before this thread turns into a dick waving" bolt on vs rotated"
Old 17 July 2010, 09:47 PM
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banny sti
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The engine in mine is a built 2 litre not a standard engine, this is a stop gap till my 2.35 is built. That engine willl have the heads ported and polished, over sized 1 piece valves, titainium retainers, jun 272 cams, shimless buckets and jun vernier pulleys. Only fitted the rotated stuff as i was bored and wanted to tinker with the car, i know its going to be laggy as **** but should be a laugh on boost lol
Old 17 July 2010, 10:21 PM
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properly mapped you wont need that 2,35 ever
Old 17 July 2010, 10:25 PM
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carl heath
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what would a 2.35 cost to build approx and would they use my original my02sti lump as a starting point or is it not a cdb.sorry if i sound like i dont know anything about rebuilt engines but i dont ! lol.
Old 17 July 2010, 10:30 PM
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I just bought a 2nd hand 2.35 for a friends car for 3.5, so to build one you are probably looking closer to 5k.
Old 17 July 2010, 11:09 PM
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would that be for a reputable builder to buy bits,build and fit ? drive in drive out,job done bar mapping ?
Old 18 July 2010, 07:14 AM
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Originally Posted by stealthy55
its about time you switched to a proper turbo and i dont mean the 555
Happy as the car is.
Old 18 July 2010, 07:47 AM
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stealthy55
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Originally Posted by jd5217
Happy as the car is.
yes, its doing well and for a long time
Old 18 July 2010, 07:50 AM
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stealthy55
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Originally Posted by banny sti
The engine in mine is a built 2 litre not a standard engine, this is a stop gap till my 2.35 is built. That engine willl have the heads ported and polished, over sized 1 piece valves, titainium retainers, jun 272 cams, shimless buckets and jun vernier pulleys. Only fitted the rotated stuff as i was bored and wanted to tinker with the car, i know its going to be laggy as **** but should be a laugh on boost lol
pukka engine then dont worry about lag just change gear
Old 18 July 2010, 11:21 AM
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gus sti8
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im going rotated as i is easier in the future to change the setup
Old 18 July 2010, 11:21 AM
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and its a std 03 sti motor unopend for now!
Old 19 July 2010, 08:29 AM
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banny sti
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Originally Posted by stealthy55
pukka engine then dont worry about lag just change gear
It is being mapped on a simtek, so going to try a map with 20% methanol hopefully that should get it over 500 @ 1.9 bar ish

Banny
Old 19 July 2010, 09:07 AM
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Banny,

Clive's P1 is a built 2.0L with RCM Cams (virtually identical to the jun stuff) that has a GT30R on it and made 567bhp with 20% Methanol. It also isnt that laggy admittedly it doesnt spool like my 2.5 used to with one on but its certainly very very driveable.
Old 19 July 2010, 10:21 AM
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I have a built 2 litre P1 with an old RCM hybrid turbo on it (GT35/P20 hybrid) plus the RCM cams as well - not too laggy either in that it's up and going from 3800.

Had a roll on test against someone in a 2.1 engined p1 with an MD321T from about 60mph on Friday night and to say he was surprised is an understatement -admittedly he was two up whereas there was only me in my car.

Clive was there as well, but we went separate ways - next time I'd be curious to see how much quicker his is as I have a rotated 30r kit to go on, but I'm now having second thoughts about whether I should bother or not.
Old 20 July 2010, 10:25 AM
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Originally Posted by Fat Boy
I have a built 2 litre P1 with an old RCM hybrid turbo on it (GT35/P20 hybrid) plus the RCM cams as well - not too laggy either in that it's up and going from 3800.

Had a roll on test against someone in a 2.1 engined p1 with an MD321T from about 60mph on Friday night and to say he was surprised is an understatement -admittedly he was two up whereas there was only me in my car.

Clive was there as well, but we went separate ways - next time I'd be curious to see how much quicker his is as I have a rotated 30r kit to go on, but I'm now having second thoughts about whether I should bother or not.
If you get the chance get Clive to take you for a run in his, that WILL make your mind up!! You'll swap
Old 24 July 2010, 12:11 AM
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Last minut decision to usd e a syvecs ecu, mapped the car with 15% methnol and ended up with 522.5 bhp and its waaaay to quick on boost for a road car but a rush to drive


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