R33 Rb30 Conversion

[Cubes]

-Joel- ure getting better fuel econ? is that freeway driving or city driving? or both? what are you averaging a tank so far?

Thats local 80 & 60km/h driving.

I've always had decent fuel economy.. Roughly 500km's per tank.

On the dyno the O2 sensor was working pretty well. Under light acceleration it was in closed loop mode constantly with afr's no richer than around 13.8:1.

I put the car in to O2 sensor diag mode once and drove it around to see what it was doing.. As the dyno said i could accelerate with traffic and it would constantly sit in the closed loop mode. It took a couple pounds of boost before the O2 sensor would no longer be used and the ecu would refer to its maps.

Maybe this is why Darrens R32 Rb30DET wouldn't run on the base map of the PowerFC?!?! His O2 Sensor may be stuffed.

[Cubes]

i think this had better be mentioned in the rb2530 conversion guide!

I think it should too..

This is how the rb30 guide has came about.. People post their findings..

A few people keep things to their selves or can't be bothered helping out the thread once their rb30det is up and running.

BUT.. The blocks you have..

Do you know the origion of them? What car what year etc?

I asked this when buying mine from the wrecker.

Maybe its a Skyline block? not a VL? Doesn't explain the turbo block you have though...

[Cubes]

I also have to make an adopter plate to fit a 4wd sump as it will be going into a GTS4.

Could you please post your findings with the Adaptor plate.. What needs doing etc.. Even take some pics.

I will put it in the guide for us SAUer's.

I would love to have an RB30 in a GTS4. Would be absolutely awesome..

You will know what I mean once you drive the RB30..

In NA form with my turbo wastegate wide open it will easily spin up the rear wheels by simply putting your foot down as you take off.

I can see my theory of the rb30 being more linear so it will be easier to control wheel spin is going to be given a good workout.

[dnb]

I think it should too..

 

This is how the rb30 guide has came about.. People post their findings..

 

A few people keep things to their selves or can't be bothered helping out the thread once their rb30det is up and running.

 

BUT.. The blocks you have..

 

Do you know the origion of them? What car what year etc?

I asked this when buying mine from the wrecker.

 

Maybe its a Skyline block? not a VL? Doesn't explain the turbo block you have though...

mate i pulled them all out myself. all from series 1 commodores and 2 of them were factory turbo

[dnb]

also where can i get an adapter for my r33 gtr oil pump?

[Cubes]

So all from series 1...

That reinforces the get a block from a Series 2 only then.

I will shoot down to the wreckers in my spare time and check it out.. (U-Pull it parts)

[Cubes]

also where can i get an adapter for my r33 gtr oil pump?

That one I don't know. I imagine you will need a contact as the greenline type shops don't have them.

I went with a RB25DET oil pump.

[Wes M]

"I went with a RB25DET oil pump."

Straight bolt on?

[the phantom]

I bought an oil pump adaptor about 6 months ago from greenline for $AU210, delivered in about 10 days. Send an email to them if you cant see it anywhere, they can definitely get it.

...and yes the S1 blocks DONT have the mounting point for the tensioner.

[Cubes]

The Series 1 RB25DET oil pump is a direct bolt up.

A 33 GTR oil pump is around $600.

I picked up a second hand RB25DET oil pump for (from memory) $100 or so.

[Bl4cK32]

Joel are u getting decent fuel economy, cos your still on the run in stage, and havent been putting the foot in as hard as you were with the rb20?

Mine wasn't running on the std Pfc maps, cos of the air filter adaptor i reckons... made the normally 80mm hole down to 50mm or so...

Mine goes in for its full tune late this week, or early next, so watch out for its first full power run Only thing holding it back willl be the turbo and exhaust..

My 02 sensor is the std one on on the car (read 12 years old) so id expect it to be dodgy like everything else was that i replaced...

TAKE NOTE EVERYONE - dont think this is a drop in job....most things have to be replaced due to age if yer slappin in a 500 hp motor

[Cubes]

Darren,

If anything I expect the motor to use more fuel during its run in as the rings don't seal as well and you tend to get more ring blow by. Hence why a car will make less power when it is really fresh compared to when it is finally run in.

I actually drive it harder with the rb30, accelerate away fromthe lights quicker and am always putting the foot down to 1/2-3/4 when exiting corners.

Towards the end there I was so so sick of the gutless rb20t I used to just put it around. The having to rev it to get any where used to annoy me.

Yer there's definately a couple of little variables.. The pod adaptor and the o2 sensor.

How was your fuel economy previous to the rb30?

lol yer its not just a drop in job.. I replaced every single heater hose, all fuel line hose. Everything. Heater hoses were ~$500 all up, ouch.

[Bl4cK32]

fuel economy.... the same if not better....gunna get the 02 replaced b4 the big gun goes on

[Cubes]

I've got 500km's on the motor now..

Went and got a gelati, visited my oldies.. cruised along the sea front loading it up out of roundabouts in a high gear.

[GTR-Ben]

fuel economy.... the same if not better....gunna get the 02 replaced b4 the big gun goes on

Do you think you really need to run the 02 sensor with the Power FC etc?

Why not disconnect it and turn it off in the settings and then just have the car tuned without it?

[Cubes]

Do you think you really need to run the 02 sensor with the Power FC etc?

Why not disconnect it and turn it off in the settings and then just have the car tuned without it?

The actual tune won't be affected by a bad O2 sensor BUT what it will affect is the light throttle cruise and idle as the 02 sensor trims the maps to suit the desired AFR (14.7:1).

With a dud O2 sensor fuel consumption in a RB20 or RB25DET will drop from close to 500km's per tank to high 200's to low 300's.

Over time they loose their response time and slowly fuel consumption increases.

This can create idle hunting issues as the O2 sensor is unable to adjust the fuel quick enough.. In turn it runs too lean then too rich etc. Not the nice happy medium with a fast responding O2 sensor.

[Bl4cK32]

[GTR-Ben]

Yes but with the PowerFC you can not set how much of the map you want the 02 to adjust..

It's better to tune without it than to worry if the one you have in there isn't working like it should be?

I'm going to try without the O2 sensors and see how it goes, I have seen cars tuned without them and they get good gas milage.

I also don't want to have to buy new GTR O2 sensors.. x 2

[Sydneykid]

Yes but with the PowerFC you can not set how much of the map you want the 02 to adjust..

It's better to tune without it than to worry if the one you have in there isn't working like it should be?

I'm going to try without the O2 sensors and see how it goes, I have seen cars tuned without them and they get good gas milage.

I also don't want to have to buy new GTR O2 sensors.. x 2

Like the standard ECU, the PFC O2 feedback is self learning.

[GTR-Ben]

Ok so I should run it.. for a street car.?

Is there any way to T the wires in or anything for a single turbo conversion? as a stock GTR has the twin O2 sensors, or do I have to just run 2 O2 sensors into the one pipe?