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if you were replacing the stock rb20 turbo what would you get?

kursed

By kursed,
in Four Door Family & Wagoneers

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Roy Grand Master

Roy

Posted
Posted

Depends how serious you are. If you just want soemthing small and reliable then id go for a GCG Hi-Flow, or a HKS 2530/2510. For the price of the 2nd hand HKS stuff you can get a new GCG turbo, so thats what i would be leaning towards.

If you want a bit more grunt and have the funds, then id say grab a HKS 2835 kit, with external wastegate and manifold. I am running what is basically the Trust equivelant and i am stoked with 235rwkws. I dont know how much it has left in it, id say another 25-30rwkws... but for now im happy with that power, and it seems to be doing it relaibly and comfortably.

Id say go the HKS over the TD06 because its ball bearing and its water cooled. The difference it makes in the real world you will never know. But some of the RB25 boys seem to have fun with the 2835, and i cant wait for an RB20 folk to give one a try.

Dont worry about being too laggy, im 3rd and 4th gear i have 18psi before 4,000rpm...lol, which is more responsive then a std turbo RB26:) It doesnt have the offboost torque that the RB26 has, but my car is a bit lighter with shorther gearing so doenst seem too bad.

So dont be afraid to bolt on a good size turbo to the side of the RB20, just be ready to reach into the pockets for injectors, ECU and clutch:)

That said if you just want a solid 200rwkws and your engine and more imortantly gearbox will last forever with the Hi-Flow:)

dangerous_daveo Grand Master

dangerous_daveo

Posted
Posted

Listen to Roy, he knows what hes on about.

And if you dont want to listen to Roy and annoy him at the same time. Put a stock RB20 turbo back on, and save for an RB30 :(

kursed Rising Star

kursed

Posted
  • Author
Posted

cef11e and CC I think that might be the go, are these rb25turbz commonly for sale round these here parts (yehaw!)?

I am not interested in a super power up but I don't want Mr. standard wrx to toast me again :/

What should I budget for if I was to do a change over? are there subsequent parts needed during the changeover of turbos or is it a bolt in replacement?

Thanks guys

oh and one last thing, I imaging it's worth doing the dump pipe from turbz while it is off right?

cefiro Experienced

cefiro

Posted
Posted

I think for the money it would be hard to go past the RB25 hi flowed. If money is no option then go HKS. I got 2535 and its sweet a little laggy but unbeatable once you get the boost up. But 200kw at the wheels should be acheivable with the hi flowed rb25.

you can pick up a cheap HKS used item from lots of places as well.

Dont forget on top of that you will need a retune $$$$ and a front mount for good measure and if not already done then exhaust from the turbo, to make the most of it.

Have you put bags in it yet ???

someonestolecc Grand Master

someonestolecc

Posted
Posted
I am not interested in a super power up but I don't want Mr. standard wrx to toast me again :cheers:

Then don't get air bags and lose your 400kg of unsprung weight :)

Infact... time for those J-style lightweight battle rims O_o

kursed Rising Star

kursed

Posted
  • Author
Posted
Then don't get air bags and lose your 400kg of unsprung weight :P

Infact... time for those J-style lightweight battle rims O_o

what do you mean by unsprung weight?

and yes those wheels are friggen heavy. if i put struts in I will keep them, if i get a new turbs and start on the engine I'll get lightweights... I like these ones:

envy-mk2-charcoal.jpg

weighing up options... dammit i need 10k then i'd be able to do it all :(

someonestolecc Grand Master

someonestolecc

Posted
Posted

DAMNNNnnnnnnnnn shieeeeeet those are hot rims.

Need more dish but yeah they're noice.

Then you'd need 5 stud and bigger brakes to show off.

Unsprung weight = everything in your drivetrain (things your engine has to spin or turn etc)

Resin Rising Star

Resin

Posted
Posted

they are like the speedy wheels ,.......oh wait they are .....yea they are nice ...

i have pretty much decided to go 5 stud aswell just cause i want some sexy wheels and they are bastard to get in 4 stud...........and bigger brakes at the same time

kursed Rising Star

kursed

Posted
  • Author
Posted

so can anyone tell me how much I should expect to pay for a hi flow t03, and it might help if I know the price of a standard T03...

cheers guys

(yes i did a search but didn't get much everyone wanted offers by PM so I didn't really find any prices)

Is it a long process to fit a new turbo in terms of mechanics hours?

col Explorer

col

Posted
Posted

It depends on what turbo you are using from what i hear the rb25 is a bolt and go type thing, if you go for a larger turbo, the injectors, ECU, and clutch might need to be changed. And, if a fitting kit is not available, you might have to custom fabricate pipes and manifold, so it can get very pricey. Then ya looking at looking at a day on the rolling road to set everything up. Such a pain in the ass, BUT worth every loving second LOL :burnout:

CEF11E Veteran

CEF11E

Posted
Posted

Kursed if you get an rb25 hiflowed stage 1 from GCG you will get 205 give or take rwkw.

things you will need for the conversion.

1, new oil return gasket. about $5

2, new copper washers that go around the banjo bolts X 4 about $5

3, should replace the turbo to exhaust manifold gasket, about $20

4, turbo to dump gasket, about $20

Thats it! all your existing pipework will fit, your oil and water lines will fit. and it will look COMPLETLY STANDARD! you wont even be able to tell if its a rb20 or rb25 snail.

the turb its self should be around $1500 if you get your mechanic ferind to buy it at trade price.

you really should get a bigger intercooler. talk to MYS013. and copy his intercooler pipes exactly. should cost prob $150?

buy a hybrid copy from here for $200

buy hose clamps and silicon joiner hose $200 (suprisingly expensive)

install bigger fuel pump $150?

get toshi ro remap your ECU $200

Dyno tune time $100

All up you will be looking at $2500 ish.

standard injectors will cope with about 210rwkw as will the air flow meter. bit that is pushing it.

anything over that and you start to spend too much on the ole RB20.

Cams, injectors, z32 air flow meter, power FC.

all these things cost an extra $2700 and you will only get an extra 50kw for the money.

so if you were to save all that cash (approx 5200) plus selling your rb20 for $1000

you got enough for a RB30det conversion nd close to 300RWKW if you follow sidneykids directions.

can you say FAST PIMPMOBILE!!!

aah i am getting carried away...

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