R33 Rb30 Conversion

[someonestolecc]

Silly question but can you run the r32 rb20det ECU, chipped with a daughterboard if necessary to run a rb25de head (with still no turbo attached to it... trying to keep as much stock rb25de and rb30e parts as possible)?

[Cubes]

I ran mine on the stock ecu for close to 10,000km's.

Ran fine apart from the fuel cut at 6-7psi. AFR's were near perfect.

[sky30]

Anyway here is the dyno graph from the tune. They had problems with wheel spin, they couldnt keep the car down, with it strapped down as hard as they could get it and with a few fellas in the boot it still managed to wheelspin...They chewed up the re55 sr's...made a mess of their dyno room. You can see the blips on the plot.

So final figure was 320kw at 8000rpm, wanted to keep going but 8k redline is fine. That was on 1.3 bar, knock is around 50-70. So due to boost spiking and excessive knock, that was the highest boost we could run with. Next step is definetely the water/meth injection, bigger cams and probably the 1.06 rear depending on lag difference. 400kw would be great, and shouldnt be too hard to achieve with the future mods.

Hope its kewl to have this posted here. Will have to put it in the rb30 hybrid power thread too.

Nice power, How easy/well does it rev to 8000rpm? I guess the ATI balancer helps it out, what was that worth in $ ??

[Cubes]

R33_racer,

What fuel are you running?

If its only a race car the 1.06 should be ok.

If not then expect it to be lazy in first and second gear.

[r33_racer]

fuel is shell optimax extreme 100ron and yeh its just a dedicated track car. Yeh for racing i think the larger housing should be fine, just a matter of convincing my old man that.

The ATI damper we got for around $800 i believe....Its the 1000hp rb26 race one. With the 25/30 everything was fine except we had to modify the powersteering pump bracket a little bit...had to space it forward about 5mm so the belt would line up properly. We moved the pump forward within the bracket rather then modifying the bracket to move the whole lot forward. Just incase someone says its a bolt up item...well it isnt It revs out extremely easy and extremely fast almost as if nothing is holding it back, i can say like most of you think too that the 30hyrbid is just as revvy as the other rbs, just makes more power at lower rpm.

Edited September 1, 2006 by r33_racer

[Adriano]

The bigger ex housing may reduce the knock a bit as well

[r33_racer]

yeh that was also one of the reasons for the larger housing.

[the_game]

im getting this done very soon, as i have a major problem, im putting in new forged pistons the good ones and really expensive iv noticed, onto an rb30 bottom end

[Cubes]

Forged pistons are pretty much priced the same.

$1.1k-1.4k from what I've seen. Shop around, prices vary from place to place.

[r33_racer]

This is mad and completly pointless but im at dinner and doing this from my phone. This is really cool and time consuming from a mobile haha. Um yeh go cp pistons since were talking about forgies.

[r33_racer]

This is mad and completly pointless but im at dinner and doing this from my phone. This is really cool and time consuming from a mobile haha. Um yeh go cp pistons since were talking about forgies.

[R32 TT]

This is mad and completly pointless but im at dinner and doing this from my phone. This is really cool and time consuming from a mobile haha. Um yeh go cp pistons since were talking about forgies.

dude... you're out to dinner?

I want you to stop eating. Get up from your chair (excuse yourself of course...) and go to the bathroom.

In the bathroom, you will find a mirror. Go up to that mirror - look yourself straight in the eye and say:

".. I have a problem .."

Its the first and hardest step to recovery...

[r33_racer]

sweet as it worked....ahh man.

Yes anyway...i am normal.

[FORZA-MOTORSPORT]

Some new bits and pieces for my rb25/30, now i can close my bonnet and crank the boost! Quick question while we are at it i noticed the 800cc sard injectors dont sit in as far as the stock injectors will this cause any problems spray wise?

[sky30]

This is mad and completly pointless but im at dinner and doing this from my phone. This is really cool and time consuming from a mobile haha. Um yeh go cp pistons since were talking about forgies.

What Comp Ratio did you get using CP pistons?

[SLIMVLT]

who made the plenum lad what brand is it.

[FORZA-MOTORSPORT]

It came from japan and is a jun plenum, bigger then greddy etc, needs a bit of work on the inside of the tb flange needs a clean up, also the runners and i need to take the ports out to suit my head as they are for an rb20det and my r32 rb25de ports on my head are much bigger, all up cost was $1400 for plenum and 800cc sard twin spray injectors, not bad eh

[someonestolecc]

I ran mine on the stock ecu for close to 10,000km's.

Ran fine apart from the fuel cut at 6-7psi. AFR's were near perfect.

Thanks Cubes. Just wanting to confirm that it'll work with a rb25de head (out of the r32)... Not sure what sensors are different from a r31 where the rb30 is But I would need to find an ECU for it.

[r33_racer]

What Comp Ratio did you get using CP pistons?

sky30 CP advertise that with a std headgasket (1.2mm) with their pistons you get a 8.3:1 CR, with our particular head and block and headgasket i worked out ours to be closer to 8.5:1, from memory it was around 8.4X:1. So you could call it 8.5:1 for arguments sake.

AM-PERFORMANCE Thats an extremely good price for plenum and injectors together. You should be heaps happy with that purchase, so now more clearance and more then enough fuel.

Edited September 3, 2006 by r33_racer

[humz]

alright, been seriously considering this for some time, ok actually a very long time. mainly because i want my car to piss in the low revs.

i have since got the 30 series2 bottom and r33det head. BUT after talking to some builers they all seem to have the same respone... dont do it!

theyre main reason that they dont wona touch it is that the 30s dont handle no where near as much boost as the 25s. now im getting a bit put off the whole 25/30 idea coz i dont wona be afraid to rev my engine hard.

from you guys whats your experiance with reliability with these things? what sort of boost do youse run? what sorta power u making? forged internals? please help a bruvva out ive already got everything sitting in my shed, just waiting for the some good advice.. basically is this true or not?

my plan was to get a responsive and reliable 400rwph... using innovative T04E, turbo back 3", cat back 3.5, fuel reg, arais forged pistons, eagle H beam rods, full balanced and preped bottom end, full preped head with minor port polish and strengthened valve springs.

(pls dont be a chop and say read the 5000 previous pages)

thanx