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What Do You Like Best About Your Rb30det

Guilt-Toy

By Guilt-Toy,
in Engines & Forced Induction

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Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

Just wondering what everyone likes about their RB30DET's.. ive been runnin round in twin cam rb30 brotherhood for around 4 to 5 years now...

I love the gut busting pull (over 1 tonne of torque well 1083nm) , the feeling of being ripped from one side of the road to the other with ease, and how tough they sound as well.

I especially like that i can drive it around off boost and be very very driveable with low compression ratio !!

so fess up ;)

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bubba Grand Master

bubba

Posted
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Still only got a little turbo on mine for now but I came from an RB20 and the difference (same turbo) is chalk and cheese. The abundance of torque is great, being able to drive under 2000rpm and stay with traffic or not having to downshift from 5th to overtake.. fkn awesome, love it and wouldn't go back!

Oh yeah, they sound tough :bunny:

WHITER33GTS-T Veteran

WHITER33GTS-T

Posted
Posted

Best upgrage ive made. I had to choose wether to rebuild the 25 or go with the 30. The 30 is so much more drivable with my twin turbo setup. Would have been nice to see how a 5 speed would last with the extra torque :P

bubba Grand Master

bubba

Posted
Posted

25det 5spd? should be fine, I'm not making a heap of power yet but I do beat up on it quite hard and it's holding up fine where the RB20 box died within a couple of months of the 30 going in!

3L TORQUE FTMFW!

CEF11E Veteran

CEF11E

Posted
Posted

I like mine because i built it and it works :)

I also love cruising in 5th at 80 and planting it. even in overdriven gear ratios the torque is a surge like nothing else.

things i dont like...

having to run semi slick 255 tyres to get traction and replacing them every other month :)

MBS206 Grand Master

MBS206

Posted
Posted

I like the fact that I have insane fuel economy... Although that might be because it goes through more engine problems then tanks of fuel... :(

Anyone want to change my BHG?

But, when it is running, even pig rich, the torque, to just cruise in and around easily. Then when I want some real power, plant it, and wait a second or so for boost...

Oh... And only revving to 5000RPM, only 1 bar of boost, running pig rich, no timing, and still able to pull 3rd gear roll on burnouts in the dry with 255 wide rears on...

But it's not fun when only using 1/4 throttle in the wet and having the same issues... :(

  • 2 weeks later...
  • 2 weeks later...
Cubes Grand Master

Cubes

Posted
Posted

Unsure on the torque mines running in comparison to Guilt-Toys but its making ~160rwkw at 3000rpm 200rwkw at 3500rpm and 256rwkw at 4000rpm then on to 302rwkw @ 17psi @ 6000rpm. Cams really woke it up with regards to the power it made on bugger all boost.

* The forgivingness if you don't want to rev it out; short shift and it just doesn't seem to loose pace or drop off boost.

* Its pull from 60km/h in fourth gear.

* Being able to stick it to rb25 and 26's from 60km/h in third gear when they are nailing second. :)

Most of all how tough the 3ltr sounds. Since the cams went in its super deep and throbs on idle.

MBS206 Grand Master

MBS206

Posted
Posted
Unsure on the torque mines running in comparison to Guilt-Toys but its making ~160rwkw at 3000rpm 200rwkw at 3500rpm and 256rwkw at 4000rpm then on to 302rwkw @ 17psi @ 6000rpm. Cams really woke it up with regards to the power it made on bugger all boost.

* The forgivingness if you don't want to rev it out; short shift and it just doesn't seem to loose pace or drop off boost.

* Its pull from 60km/h in fourth gear.

* Being able to stick it to rb25 and 26's from 60km/h in third gear when they are nailing second. :rofl:

Most of all how tough the 3ltr sounds. Since the cams went in its super deep and throbs on idle.

Can I ask, what cam size did you end up going with?

Cubes Grand Master

Cubes

Posted
Posted

265/263 8.9mm Tighe Regrinds. 221degree's at 0.050" - Cost me $330.

I was a little sceptical of the 265duration but Shaun/Boostworx insisted they work well in the rb30.

Fuel economy is great - A little over 11L/100.

No noticeable loss down low even though the dyno shows 2-3 kw. Once over 2k the cams start making more power compared to stock.

On the road low gear spool improved noticably. It appears to rev up and spool the turbo a tad quicker at light load (i.e low gear).

MBS206 Grand Master

MBS206

Posted
Posted
265/263 8.9mm Tighe Regrinds. 221degree's at 0.050" - Cost me $330.

I was a little sceptical of the 265duration but Shaun/Boostworx insisted they work well in the rb30.

Fuel economy is great - A little over 11L/100.

No noticeable loss down low even though the dyno shows 2-3 kw. Once over 2k the cams start making more power compared to stock.

On the road low gear spool improved noticably. It appears to rev up and spool the turbo a tad quicker at light load (i.e low gear).

So you just had your stock Cams reground? Or you bought whole new cams, already done?

I really want some new cams, as big as I can go, and for my head, it looks like a 272 with 9.25mm lift is as large as I can get in there... My biggest issue in finding cams is finding ones to match an RB20... ;)

That's $330 per cam? or $330 total?

judd33 Collaborator

judd33

Posted
Posted

about to build mine!

arias forged pistons

spool conrods

n1 oil pump

metal head gasket

and all the usual stuff!

mine is auto so might have to mod gearbox at some stage!have highflow turbo on mine at the moment,rated at 260kw at the wheels!will hope to get around 340hp at the wheels and if not happy with power then will go for slightly bigger turbs!bottom should be rated at around 550hp at the wheels!being auto,the torque down low should be awesome! ;)

xsv_32 Enthusiast

xsv_32

Posted
Posted

Lol mine isnt going yet either so at the moment my favourite thing is bragging rights to my other mate rebuilding his 25 :rant: . Secondly is the anticipation of getting it goin cos of all the stories about lighting up the rears in 3rd in fourth etc. Cant wait!!

MBS206 Grand Master

MBS206

Posted
Posted
Lol mine isnt going yet either so at the moment my favourite thing is bragging rights to my other mate rebuilding his 25 :cheers: . Secondly is the anticipation of getting it goin cos of all the stories about lighting up the rears in 3rd in fourth etc. Cant wait!!

I don't like the fact that mine will bag 3rd gear with 1/4 throttle in the wet... Makes it f**king pathetic attempting to overtake or anything...

And that's 3rd gear, doing 80km/h, go to accel and it steps sideways...

And at the cost of rubber on the rear... You cringe very quickly... :)

Cubes Grand Master

Cubes

Posted
Posted

Need a bigger turbo. :cheers:

I find the GT30 to be really tractable. Part throttle the boost moves up with more throttle i give it. Its easy to have it just hanging on the limit so to speak.

If I don't feel like playing with the throttle - 80km/h in fourth still pulls plenty hard and will start to break traction at around 110km/h with half throttle in the wet :)

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