archer935

hi, i have an 06 plate r sport with a 2.0l ej20 non turbo engine. i roadtested a 2.0l wrx earlier today with an ej20 turbo engine. since the engine blocks are the same is it possible for me to turbo mine but run lower boost so i dont blow anything up?

james

cuprajake

iTrader: (11)

it is, but the costs involved usually negate doing it, unless its a project then there is the insurance side of things, to think about

sunny1989

If i'm honest mate there's no point, for the outlay you mayswell save and buy a wrx. they are cheap enough now anyway!

I'm pretty sure you would have to change a lot of components, engine management systems, fuel systems, possibly internals even when running low boost. i'm no expert but i'd imagine its not a straight forward swap..

other alternative would be to transplant a wrx engine et drivetrain in, but its honestly not worth it for the outlay IMO

CREWJ

It is cheaper to buy an STi and insure it than it it would be for you to turbo your car.

boosted

Totaly possible, but as said not really viable when there are soo many wrx's about. Ive turbocharged many "std" engines and mapped them all myself, im guessing 200 bhp would be reliably achievable, but the knowledge and amount of work involved to do the conversion is high.

cuprajake

iTrader: (11)

theres a bloke on impreza sport.net that has supercharged his, seems to run well, so maybe thats a better option..

boosted

wouldnt think so personnally, the cost of a supercharger and the complications of fitting it far outweigh bolting on an OE manifold and turbo set up. Both set ups need programmable management.

boosted

I have successfully turbocharged;
1.6 cvh on MS efi
1800 zetec turbo on ms
another 1800 zetec on ms
2 litre zvh on ms
2 litre ohc sierra
318 is bmw e30
Sierra cosworth V6 24v turrbo on KMS
all on std internals except the zvh after too much boost lol.
I have also modified and mapped
2.0 16v mk1 golf turbo,
2.8 vr6 turbo mk1 golf,
2.8 vr6 24v 4x4 mk2 turbo golf,
pulsar gtir,
my current subaru,
mk 2.0 16v mk1 golf (NA) on ms.
R1 turbo engined kit car on MS
So i have a fair idea about turbo conversions and whats involved!

archer935

i got a quote on an 05 wrx and the insurance was £3200 and that was the cheapest. im paying £1100 at the min. i thought there might be alot involved and even though im a qualified tech iv never turbo'd a car. so still learning. its running about 170bhp as standard so 200bhp with the turbo whistle and dump valve would be nice but i may be inover my head i think

jura11

iTrader: (7)

Turbo conversion on non-turbo will be expensive and still think your engine is not strong as WRX or STi.


Which i know in USA few companies selling Supercharger kit.Have look on Nasioc for ideas...

http://www.rs25.com/forums/f7/t13666...-complete.html

http://www.rs25.com/forums/f7/t10710...ur-subaru.html


Jura

RA Dunk

It is possible yes, but with it comes a whole world of pain, money and work

Diffs, gearbox, Ecu, Wiring loom etc etc

Basically nothing in your sport is compatible with the swap, you would be just as well stripping back to the shell and getting a donor car to do the swap, which would mean buying another car, just as well save up a few quid and buy one with a turbo TBH, deffo cheaper in the long run.

jura11

iTrader: (7)

Agreed on this


Make sense sell your or enjoy until you can have cheaper insurance and buy WRX or STi.


Jura

boosted

I have done something similar to the following before to run low boost;
Fit manifold, turbo and exhaust from turbo model (onto std non turbo car)
Fit oil feed and return and water pipes
Fit boost pipes, intercooler and air filter (some engineering/imagination maybe required here with maff sensors and breathers etc)
Now the important bit- I added a fifth injector set up which was more than capable of supplying fuel for my 7psi boost, the maff took care of ig timing (prehaps your car is knock sensing?)
Its really as simple as that, but your power level will be modest with std compression and fuel system, clutch and drivetrain. But it can be done, and it can be done quite cheaply if you have the confidence and skills.
I have just done a 205 gti with a 16v gti6 engine with std internals, at the moment it is running with the wastegate fully open (no boost) untill I sort the fuelling enrichment.
For the fueling i will be using a MS to inject more fuel only after 100 KPA (in boost) the OE managemnet is knock sensing so will retard the ig enough for the low boost it will run. Looking for over 200bhp @ 7 psi (for now).

cossielad06

so what would be involved in fitting a turbo on a 1999 impreza sport??
many thanks

jaygsi

iTrader: (46)

This is an old one. Be cheaper to buy turbo engine lad, but then you need brakes, suspension, exhaust system. Going cost you easy grand in parts, then you gota get someone fit it all. Just hold out for a turbo lad, its painfull but worth it. Or i'd go down the Nos route, cheap to buy and fit, only problem with those is engine wear.

Donsjapwrx

iTrader: (2)

Plus you will still end paying more than 3200 for the insurance as it will be a custom car eninge modification.

Unless you wasnt going to tell them then you may as well go and buy a wrx and not buy insurance