Need Info on upgrading RB20DET. Please discuss.

[kelvin_goh999]

Hi guys,

I am driving a Cefiro with RB20DET. I heard that the stock RB20DET ceramic turbo cant boost up to 1 bar as the bearing will fly out through the exhaust. Hehe. Correct me if i am wrong.

I really would like to feel the feeling of 1.5 bar. I have few question & would like to get the answers from all the SIFU here.

1. For standard RB20DET blok & cam, can stand until what boost?
2. Do we need to change to metal head gasket. If yes, what is the brand & cost?
3. What is the most suitable Turbo as a replacement for the stock RB20DET that I can up boost to 1.5bar?

Or if there is anyone that have upgrade his RB20DET to bigger turbo & can up boost to 1.5bar, really hope you can share it out. Thanks for all the information that all of you state down later on.

Kelvin

 

[Jeffrey Lee]

Hi guys,

I am driving a Cefiro with RB20DET. I heard that the stock RB20DET ceramic turbo cant boost up to 1 bar as the bearing will fly out through the exhaust. Hehe. Correct me if i am wrong.

I really would like to feel the feeling of 1.5 bar. I have few question & would like to get the answers from all the SIFU here.

1. For standard RB20DET blok & cam, can stand until what boost?
2. Do we need to change to metal head gasket. If yes, what is the brand & cost?
3. What is the most suitable Turbo as a replacement for the stock RB20DET that I can up boost to 1.5bar?

Or if there is anyone that have upgrade his RB20DET to bigger turbo & can up boost to 1.5bar, really hope you can share it out. Thanks for all the information that all of you state down later on.

Kelvin

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[s13-gts]

I am not a Sifu, but this is what i picked up recently:

RB20DET running at:

1. 1.2 Bar require:
   • Bigger Turbo (T04E)
   • Better FMIC
   • Boost Controller (eg AVCR)
   • Better Fuel Pump (Walbro... Stock GTR's)
   • Some kind of fuel management (eg SAFC).
   • Wastegate
2. 1.3 - 1.4 Bar require:
   • All if the above
   • Bigger Injectors
   • Even Bigger Wastegate
   • Metal Gasket
   • Fuel Pressure Regulator
3. 1.5 Bar and above require:
   • Everything on top
   • Better management (Emanage / Power FC
   • Internal Upgrades (Cams + Forged Pistons etc
   • Even bigger turbo (T04S / R or TD06)

Now what we mentioned are only about the engines + fuel + management... There's other things to consider as well, when u have a lot more power, u should have better transmission (clutch + gearbox) to handle that sort of power, better brakes etc :P

If i said something wrong here, please correct me eh guys?

 

[kelvin_goh999]

Bro. Can you please let me know what kind of Turbo that you mention in your previous email like is it from Garrett, or ball bearing & etc? As I am not so good in recognize Turbo & how much does the Turbo cost? thanks for your previous information.

 

[s13-gts]

T04E got the original Garrett ones... got HKS ones.. etc. This ain't ball bearing, it's old school bush. It should cost you around 1 - 1.5k (some i hear even a couple of hundred bucks) depends where you get it and the condition.

There's others as well T04S, T04R
These designs rather old, you should get the GT series -> http://www.turbobygarrett.com/turbobygarrett/products/turbochargers.html. These are ball bearing turbos.

But there's a lot more options e.g. - TD-06 20G 16G and a lot more based on your needs and requirements.

Take a look here too -> http://www.mjmturbos.com/AAAmjm2ndpage.htm

Just remember better turbos cost more and i already gave u a range on how much the T04E cost
Sorry bro I have limited knowledge on this.. i know quite a few, coz i did ressearch for my RB project. But i tell you something... 1.5 Bar doens't mean your car is fast. A 1 Bar car still can beats you if they mod other things. ;)

 

[kelvin_goh999]

Hi bro,

Anyway thanks alot. U really help alot already. Thanks for the information again.