Rb30 Turbo Question

[**r33 skyline**]

hey guys, i have an rb30 turbo in my r31 wagon and was looking to upgrade the turbo- which would be the best for this motor ( its standard expect for fmic, pod, boost controller etc) have an rb20 red top turbo on it at the moment, but looking for something a bit bigger and not to expensive!

and what do u reconmend that i do to the car next (what mods)

cheers

[russstuff]

gotta go the forward facing plenum and injectors!

i have a 25/30 and a garret TO4B which will do 20psi no probs but i find its too laggy for my liking, i dont see full boost till 3500-4000rpm and the 30 bottom shouldn't really be revved more than 7000rpm which doesnt give you allot of time in 1st and 2nd gear.. so a drag off the lights is a little embarrassing if its not too far to the next set of lights..

[WYTSKY]

In terms of cheap turbos, your going to find most will crap themselves first time you use them and shatter into your motor, so if you see a turbo sub 700-800 I would say dont touch (except for stock ones etc)

The best bang for buck turbos around here that are reliable are hypergears. Im sure Stao will be in here soon enough and give some recommendations.

Before you just look at upgrading the power mods ie. turbo, for your car to run correctly you HAVE to upgrade the supporting mods, which are things like:

larger injectors to flow more fuel into your motor to cope with the larger amount of air being pushed in by a larger turbo (so the air fuel ratio can stay on par)

ECU - the cars computer, to customize the maps of air fuel ratio, you will never get the most out of your car without one

Air flow meter- Im assuming the old 31's have one, if they do, it will probably also need an upgrade as it measures the amount of air being pushed into the motor.

Fuel pump - if you dont want your car to explode because there is not enough fuel in it then you have to have one, some tuners wont tune without a decent one.

THEN you can worry about the forward facing plenum etc... but for now thats just wanky... its not a necessity in your case.

get the above mods first and a decent turbo and you wont believe how much faster your car is. if you dont get the above mods, you might be able to squeeze 200-230rwkw from your current setup with a small highflowed standard turbo, which cost roughly 1100-1300ish to do, but seeing as you have the larger capacity motor, you can go a larger turbo without too much lag and have alot of power with it. The only problem is cash... you would probably be looking at about 2000-3000 to get the above then another 1200-2500 for a turbo, so there goes your cheap upgrade.

Adam