Top RB20 Club... do you have over 260rwkw?

[Roy]

update on mine

since i blew the 20 box some 3 months ago i pushed the car to the side and did things slowly, its now up and running again with the 25 box and 1 peice shaft.

took it down for a run on moday night at the motorplex, it ran 12.077 @119.5mph!! only bummer was the 2.0 60ftr

the street E/T tyres are a hard tyre to get used too, i either bogged down or wheel spun. as the track isnt preped for the off street meets i was wheelspining all the way through first gear which on a prepd track it'll spin but grip up almost instantly.

the motor is still tottaly unopened and today i put it back on the dyno just to see where its at, it pulled a very respectable 390.5 hp @25psi

LOL...that is so awesome. Can i ask where the boost is being measured from, turbo outlet or in the inlet manifold? Also, what does your tuner think abotu you being able to make that much power at that much boost? Does he think the large exhaust housing makes the difference to it actually flowing at those revs/boost? I have the baby 8cm housing and i doubt that i could make that much power, and dont think i can get that much more air through the dicky little exhaust housing.

But all these questions means im keen to give it a try at the drags. I would love to run 23-24psi and see if i can get into the low 12s Your mph is damn good and your ET great considering your 60ft time

[Bunky_r31]

i'm glad he's getting the mph down the track too, WA is constantly critisised for having high reading dynos, good to see that he's backing up the hp numbers with some good times

i think the problem is there's too many dyno queens over here and not enough people hitting the track and backing it up

though admittedly it is getting better

[Wheezy]

Afterall Roy the TD06 is good for 1.9 bar, do ittttttttttttt

[AD4M]

haha I knew youd be impressed Roy

we get the pressure reading from the fuel reg, i've actualy been ubber slack and havent even fitted a boost gauge in the car yet haha (i rely on the profec b)

the rear housing obviously plays a big part in it, the shop i ran it up on yesterday have actauly been fitting the 8cm kits on rb25s and need to run 16-18psi to see around 360hp-atw on a safe tune. but its a generic kit..

and like Trav said when i pulled the 405hp @26psi i copped a fair bit a slack by a few people, but now the mph is there to back it up its only a matter of more practice on the launch to go into the 11's.

[Roy]

haha I knew youd be impressed Roy

we get the pressure reading from the fuel reg, i've actualy been ubber slack and havent even fitted a boost gauge in the car yet haha (i rely on the profec b)

the rear housing obviously plays a big part in it, the shop i ran it up on yesterday have actauly been fitting the 8cm kits on rb25s and need to run 16-18psi to see around 360hp-atw on a safe tune. but its a generic kit..

and like Trav said when i pulled the 405hp @26psi i copped a fair bit a slack by a few people, but now the mph is there to back it up its only a matter of more practice on the launch to go into the 11's.

Hmmm...i need bigger injectors if i am to run any more boost. But i doubt i will get much more power if i wind another 4 or 5 psi in there. I wouldnt dare run that boost at the track, but at the drag strip i may give it a go...but injectors are so famn expensive

[Interloper]

Hmmm...i need bigger injectors if i am to run any more boost. But i doubt i will get much more power if i wind another 4 or 5 psi in there. I wouldnt dare run that boost at the track, but at the drag strip i may give it a go...but injectors are so famn expensive

6x Nismo 555cc injectors - pink - R32 GTST, R32 GTR, R33 GTR, R34 GTR - $790 delivered

4 years ago i paid $1100 for mine. These now seem cheap to me

[turboedsloth]

wow adam thats pretty impressive. no progress on mine this week working flat out 13 hour shifts 7 days a week.just gota make my exhaust housing 3 bolt flange then weld the exhaust together, put in my fixed seat an gauges then tune time. had to make my own oil feed fitting for it to no one in bunbury had anything that would fit

[Roy]

6x Nismo 555cc injectors - pink - R32 GTST, R32 GTR, R33 GTR, R34 GTR - $790 delivered

4 years ago i paid $1100 for mine. These now seem cheap to me

You are right...but the way i see it. Thats $800 to allow me to run more boost and most likely pop the motor, so cant bring myself to spend the money...then there is the case of "what money" do i have to spend

[Rolls]

Does he think the large exhaust housing makes the difference to it actually flowing at those revs/boost? I have the baby 8cm housing and i doubt that i could make that much power, and dont think i can get that much more air through the dicky little exhaust housing.

Just out of curiousity can you compensate (slightly) for running a smaller rear housing by running a very large external gate, I'm sure it would be harder to control boost but would it help free up the top end a little in say your example?

[Wheezy]

Trust Ext gates (if pro R) are 42mm on the 8cm its already larger than needed.....

[Roy]

You can make the gate as bug as you want. it doesnt change the fact that to make the power you need to flow a lot of air through the exhaust housing...and consider this, the scroll of the 8cm housign isnt exactly big, at its smallest cross sectional area it probably is as small as a 5c piece.

[Wheezy]

You can make the gate as bug as you want. it doesnt change the fact that to make the power you need to flow a lot of air through the exhaust housing...and consider this, the scroll of the 8cm housign isnt exactly big, at its smallest cross sectional area it probably is as small as a 5c piece.

Yeah I was surprised how small it was when I picked it up.....

[Bunky_r31]

roy i had no idea you were an attractive blonde!

haha good article none the less

[Interloper]

roy i had no idea you were an attractive blonde!

haha good article none the less

yeah, i'm surprised that they didn't even include 1 pic of your ugly mug

But plently of pics of the 32 and a pretty big story spanning 5 pages - ya gotta be happy with that

you're famous!

[FATGTS-R]

Well heres my latest demoralising update. Went to an NDSOC drag day a few weeks back in search of my elusive 12 second pass.

Before the day I got a straight through exhaust system fitted up. Sounded like a lancer at idle but unreal at high revs.

Put it on a dyno a few days before and got 170rwkw at 6-7psi and 260rwkw at 19-20psi all in at 3800rpm.

Loaded car on trailer and brought a set of brand spankers e/t streets with me to bolt on when I was up there. My mate is starting up a website and wanted footage so he spent the best part of an hour setting up the in car camera.

Finally get out to stage and run down the track off the spring taking it easy to get all the fluids up to temp. Come back and all is good so I decide to have a run with the boost up on the street tyres before bolting on the M/T's.

Get put in the water and let her rip for the burnout. It decides to start axle tramping like crazy and instead of getting out of it I push the pedal down harder thinking it will come good and start spinning nicely. High hopes it seems as instead of spinning clean it decided to spin the uni joint off the tailshaft where it meets the gearbox.

So back on the trailer where its still sitting with dust and bird shit all over it, the c@nt of a thing.

But alas, I WILL run a 12 second pass on an RB20 with factory turbo and cooler sans gas.

[limpus]

yeah, i'm surprised that they didn't even include 1 pic of your ugly mug

But plently of pics of the 32 and a pretty big story spanning 5 pages - ya gotta be happy with that

you're famous!

What mag is this? Is it some article on rb20s? sounds like a good read...

[Draconis]

So, not to get too far from the topic... I have some questions. First, I'm seeing lots of you guys making the mid 200rwkw... let's take 250 for example... that equates to about 335rwhp. That is a good healthy amount. I also read that the RB20 block can take up to 400hp. Some of you guys have done mods but dont list them all... have any of you guys done over-sized pistons?

Reason I ask this is because I'm in the middle of a debate with a shop owner, who owns a R32 RB20DET while I have a Gazelle that has a RB20DET swapped into it. I have read these forums countless times and esp. this thread. We both agree you need bigger injectors, cams, cam gears and a larger turbo coupled with some form of a standalone or ECU management. The only thing we differ on is that he says I will need over-sized pistons... if not, then I'll need a new block soon after due to the limitations of the stock block. But I dont see anyone doing this.

I am planning to get 300rwhp or 223.88rwkw. It's not quite up with you guys in this thread... but decently good. The following are the mods I have:

RB20DET

Plazmaman intake

stainless steel high mount exhaust mani

t3/t4 (sorry... I bought it and it just came into the shop.. forgot the trim size and all... but power is well enough for 300)

555cc Tomei injectors

JGY Customs RB20DET fuel rail

Sard Type R fuel regulator

Tomei cam gears (256/8.5mm)

Cam gears

HKS SSQV

FMIC

Exhaust (2.5in from turbo the goes to 3in when there's space... right below driver/passenger), no cat

Splitfire coilpacks

GReddy Emanage Ult. using Map sensor

The question is, will I need over-sized pistons? I know location and environment plays a large factor, but theoretically, will I be able to achieve my goal? I'll be posting up my results here in the next couple of months.

So anyway, this sort of fits with my mods and what I'm hoping for part of this thread.

[1400r]

my old 32 made 232rwkw stock engine

hks 2530, fcd, cooler, pump, exhaust

the power your after is nothing for a standard internal rb20 most of the guys in this thread a still on stock internals

[battery]

The question is, will I need over-sized pistons? I know location and environment plays a large factor, but theoretically, will I be able to achieve my goal? I'll be posting up my results here in the next couple of months.

So anyway, this sort of fits with my mods and what I'm hoping for part of this thread.

No.

plenty of guys are making 250kw on stock bottom ends, theoretically the rb20 is the strongest of all the RB's.

i would never spend anything on an rb20 bottom end, i mean its much more cost effective to do a conversion to a RB25 or 26.

the workshop just wants more money out of you, simple as that.

[Wheezy]

No.

plenty of guys are making 250kw on stock bottom ends, theoretically the rb20 is the strongest of all the RB's.

i would never spend anything on an rb20 bottom end, i mean its much more cost effective to do a conversion to a RB25 or 26.

the workshop just wants more money out of you, simple as that.

Its even cheaper to just get another RB20 from the wreckers