R33 Rb30 Conversion

[GTRgeoff]

John, nothing in particular as far as the actual intended compression ratios. Build it for what you want to get from it. Easier to drive more average power and more responsive but less peak power go hi comp, dyno queen go low comp with peaky massive turbo

Mark (Scooby) that should be decent, but my 26 made 260 on the stock computer. Go back for refund or more power. Good luck after run in.

Steve the cams and I understand crank angle sensor are different but all else is the same. I see you are racing at the "Bank". Let us know next time you run and I'll round up the boys from the Switch to come watch and ponder just why anyone would be so silly with a 120

[FineLine]

In for sure Geoff, Havnt seen that 120 ynot out their to date. Should be an interesting toy.

On the oil pump issue, I went the Jun not for the High volume flow but simply because it is touted as a stronger more reliable pump than the N1. Also did the collar deal as extra insurance.

[RB120WHY]

Steve the cams and I understand crank angle sensor are different but all else is the same. I see you are racing at the "Bank". Let us know next time you run and I'll round up the boys from the Switch to come watch and ponder just why anyone would be so silly with a 120

AHAHAHA I sure will Geoff, and thanks... I think my mate is crazy fitting a 2JZ into a HR Holden and expecting to come away from Summernats in one piece.

[GTRgeoff]

Yep, he'll get a grilling. I recently saw a 20B rotor in an old holden at SelectMaz in Melbourne. Something interesting. Look forward to the invite.

[BAMR33]

Yep, he'll get a grilling. I recently saw a 20B rotor in an old holden at SelectMaz in Melbourne. Something interesting. Look forward to the invite.

Speaking of rotary's in oldens

http://en.wikipedia.org/wiki/Mazda_Roadpacer

[Craved]

In for crazy transplants

latest one we are working on is a 1JZ into a sprinter ... only just makes it in for street engineering.

[GTRgeoff]

That would be wicked.

[Godzilla33]

Anyone got a S2 RB30 block/motor for sale? must be std bore, Brisbane area. Ive managed to stuff the threads in a few of the head studs while tapping out to suit RB26......not cool.....

[GTRgeoff]

Overdrill, retap and use helicoils to get the right thread, but better and stronger.

There is a motor and gearbox on ebay in Warwick for $1

[Godzilla33]

Thanks Geoff, Ive though about using helicoils or time serts, just thought for the pissant price of another block I might just try again.

[Scooby]

OK here's a question for the airflow gurus, Geoff that means you.

The 26/30 will not allow use of the standard airbox in the R32 GTR easily. Obvious choice is to use pods but extra height of the RB30 makes it quite difficult to accomodate pods with any kind of meaningful airbox.

I'm thinking of feeding both AFMs by having them draw air from the back of one big arse pod filter, which could be accomodated by cutting a hole in the area immediately below the airbox.

The filter area would be ample, and construction of the airbox would be relatively easy. If you look on the SSS Automotive website you'll see that their blue Improved Production car runs this type of system.

Any thoughts / ideas on this approach?

Edited August 9, 2007 by Scooby

[Adriano]

Sounds good, we fit a 4 inch intake 6 1/2 in diam 10 in long K&N pods under there, fitted perfectlybetween the inner guard and the under guard if that makes sense

[Adriano]

Does anyone know what the crank endfloat specs are? i just checked mine and its .016mm, which seems a bit tight

[GTRgeoff]

I use that location for my air filter but there are problems.

When it rains or the road is wet the spray can be taken up, and that sends the AFMs into error as the ECU thinks they are maxing out. The right thing to do then is box it correctly to remove the spray from the NSF tyre from the problem. I'm yet to examine the effects from following closely a car putting up serious spray.

Also the location is very dirty due to the tyre proximity.

[Scooby]

I use that location for my air filter but there are problems.

When it rains or the road is wet the spray can be taken up, and that sends the AFMs into error as the ECU thinks they are maxing out. The right thing to do then is box it correctly to remove the spray from the NSF tyre from the problem. I'm yet to examine the effects from following closely a car putting up serious spray.

Also the location is very dirty due to the tyre proximity.

Due to the plastic wheel arch guard I'm not sure what the problem would be from NSF tyre? I can see that on the 32 GTR there would be an issue with spray coming in through the vent in the front bar but I'd counter that by making a shield.

Any thoughts on feeding the two AFMs from one big filter?

[GTRgeoff]

No problem with that at all. Unless there is a serious restriction on either intake path the action of the turbos will pretty much equalise intake, as well the afm signals are averaged in the PFC.

That guard liner is about as secure as a leaf in a hurricane. Both mine on the track car ripped out at about 200kmh.

[Scooby]

No problem with that at all. Unless there is a serious restriction on either intake path the action of the turbos will pretty much equalise intake, as well the afm signals are averaged in the PFC.

That guard liner is about as secure as a leaf in a hurricane. Both mine on the track car ripped out at about 200kmh.

Thanks Geoff

[silver gts-t]

Do any of the greddy range of plenums work on a rb25de from r32?

im getting some conflicting information..

the runner seem like a hybrid rb25/20 design

[Cubes]

Nope.

The R32 Rb25DE ports are the same design/shape as the rb20det ports but larger. The rb25de ports look more like 2 cylinders side by side where as the r33 rb25 ports are more squareish.

[silver gts-t]

*sigh*

gotta get my hands on some piston damn work and study holding me up..