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

 

Have a read of this fella

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

Banny

 

i have a rotated gt30 on a standard 2.5 making 450.6bhp, no problems so far touch wood.

 

why dont you go for a bigger "bolt on" and save a load of money?

 

does a GT30 have to be rotated?

Or will it squeeze into the original space?

 

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?

 

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

 

Would not know, I dont have one.

 

its about time you switched to a proper turbo and i dont mean the 555

 

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

 

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

 

banny, can you please explain "proper heads" and "jun cams" before this thread turns into a dick waving" bolt on vs rotated"

 

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

 

properly mapped you wont need that 2,35 ever

 

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.

 

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.

 

would that be for a reputable builder to buy bits,build and fit ? drive in drive out,job done bar mapping ?

 

Happy as the car is.

 

yes, its doing well and for a long time

 

pukka engine then dont worry about lag just change gear

 

im going rotated as i is easier in the future to change the setup

 

and its a std 03 sti motor unopend for now!

 

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

 

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.

 

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

 

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