Rbon91

iTrader: (6)

Taken my 2005 blob sti off road for winter to hopefully get it to 500+bhp.. not sure what engine to go for tho. The car wilo mostly be used on the road with half a dozen track days a year...

current spec is
MD321T NON BILLET
650CC INJECTORS
HDI FMIC
GT SPEC HEADERS
RCM UP PIPE
BLITZ NUR SPEC R 3" TURBO BACK
3PORT BOOST
BC COILOVERS
CAMBER BOLTS
BREMBOS

Engine, turbo and injectors are to be sold hoping to get a second hand forged engine. . But what shal I go for 2.1 or 2.5? And which turbo?

Thanks ryan

ditchmyster

iTrader: (7)

2.35 if you can find one gets my vote, that way the skies the limit should you decide to go further.

But your going to need deep pockets.

banny sti

iTrader: (68)

2.1 with a rotated billet 30 will get you the power you want, but hope you're prepared for all the little things you will need as they add up.. fast!

toyney83

iTrader: (3)

2.1, gt30, 1000cc injectors

Rbon91

iTrader: (6)

Plan for car is
. Engine
. Twin plate clutch
. Creamic coat headers, up pipe, turbo (not decided which one to go for yet) and downpipe.
. Reverse inlet
. Fuel pump
. Injectors 1000cc
. Swirl pot
Probably loads more which I have forgot about...
would love a 2.35 but there the big ££££ dont think will have money for that

banny sti

iTrader: (68)

For track days a baffled sump and a catch can would be advisable

Rbon91

iTrader: (6)

Was thinking 2.1 with gt30 rotated..
I have until next april to get car done and finished. Saving about £250 a month on fuel by hwving it off the road. Engine in it now has only covered 36k so with turbo and injectors hoping to get £2200 for the lot

ditchmyster

iTrader: (7)

Doubt you'll see £2.2k for that lot, are you talking long engine or just the bottom end?

toyney83

iTrader: (3)

You selling complete engine? If so what heads are you going to use? As yours now would most likely be up to the job

Rbon91

iTrader: (6)

Full long engine mate

engine £1200
turbo £900
Injectors £150

Rbon91

iTrader: (6)

Hoping to buy a complete forged long engine mate.. friend of mine wants my whole engine to go in his UK300

toyney83

iTrader: (3)

Find yourself a decent cdb. Depending on the spec of the build I'd say your looking at around 3k for the bottom end. Keep your heads and go from there. Bannys a good lad to talk to as he's plenty of experience with these projects. But that's where I'd start. Why 550hp anyway? That'll make a ridiculous road car

Rbon91

iTrader: (6)

Going to run different mapps...
fancy somthing nuts tbh.. its at about 440bhp atm and wanting more power lol..
hopefully going to do nurburg ring next year in it

Rbon91

iTrader: (6)

How does this look?

https://www.scoobynet.com/showthread...6#post11226066

legacy_gtb

iTrader: (3)

Im a bit of a fan of a well built 257! :-)

Its resleeved, but for more than 450ftlbs youd probably want to be looking for closed deck inserts.

The 2.5 is a great road engine though, so maybe pull back your power aspirations in return for a nicer road drive.... out of interest, wheres the 550 figure from?

Rbon91

iTrader: (6)

Tbh dont know... just fancy having a impreza with 500-600bhp.. its great at 440bhp now suprises alot of supercars..

banny sti

iTrader: (68)

The power delivery from a rotated setup is completely different from a standard position turbo, its hard to put into words but I've standard position at 440 and rotated at 450 and the rotated felt a lot quicker.

toyney83

iTrader: (3)

Looks decent and fairly close to you isn't it? As said though, over 450 then should be pinned or cd inserts.

Rbon91

iTrader: (6)

ahh rite ok.. maybe 2.1 with billet Gt30 rotated is the way to go for me then

Rbon91

iTrader: (6)

Yeah only 20 min drive away.. might pop over and have a look over weekend

gazney101

iTrader: (5)

Basically what im doing this, i got a 2litre cdb, cosworth pistons and rods, nitrided crank, mine will be staying a 2litre as i couldnt find cosworth stroker pistons at that time for the right money, i got hayward and scott rotated pipework, im using lateral modded 850 injectors and a non billet gt3076r blowing through jdm big port heads hoping to see 550 with a slash of meth

just me

iTrader: (3)

Do you lose a lot of spool with a turbo such as this?

rooferman

iTrader: (6)

2.1 with gt30 billet but with .82 housing ..

just me

iTrader: (3)

Dumb question, but who sells the billet gt 30's?

gazney101

iTrader: (5)

Scooby clinic

stevebt

iTrader: (8)

Tt's going to cost you a lot more than you think as its a slippery slope, 550bhp is a nice figure but its not very fast and when you push for more the costs spiral.

Best thing now is to spec for as high as you can as its so easy to change your mind so spec'ing low will just cost you more in the long run


Basically your spec is redundant so its all for resale so you need to think do you need all the grief

IainMilford

iTrader: (15)

Best part of £20K at least.

gazney101

iTrader: (5)

No way 20k, i think i got 4k in my engine, 1500 turbo and pipework, 2k in other bits and bobs and 500 for mapping, and whatever my bill is from as performance for bolting it all together

Rbon91

iTrader: (6)

yeah I was thinking 5-6k mark

IainMilford

iTrader: (15)

Ok I re read your first post and see you won't need the 6 speed, you have a front mount. But you said you want to go rotated in an earlier post, rotated pipe work is the best part of a grand, waste gate is £400, gt30 turbo is £1500, cone and silicone hose is £200, engine is gonna cost you £5k+, then your engine management, alcatek ecu is a grand, then you have all the sensors needed, that's another £500+, then clutch £1k (unless you have a suitable one now) fuel system etc.

£20k is from my own experience which is with a WRX is more work needed, but I'm just saying it all adds up quickly!!!