My Rb30de

[LO_R33]

Good to hear you've finally ran a time, I've been out of the circle for a little while... whats an rb25de with the usual mods run 1/4?

Dayne

[BADR33]

well a mate of mine with a 4dr whale ran a low 16 a couple of years ago.. NZ dusnt have the best drag tracks.. well the best one is too far away. haha.

i just bought a 2way diff off the local internet trading site.. im hoping its a good one cus that would be bloody handy to have a nice diff finialy. slightly lower ratio at 4.1 but its all good!

so the diffs on the way. now all i need is a set of semi slicks or some 16s and should be looking even better.

i think if i can get in to high 14s by the end of the summer i would be extremly happy.. that would be 1 pretty fast 4dr whale ay?

i hadnt even planned to drag untill like 2days before the drags...

cheers nizmo freek.. im still getting the mudd outa the guards of my car! probly going to have to take off the wheels and clean every thing again!! sunday was sooo much nicer

[Cubes]

That really is a worry when a couple of years back a bloke at a private air drag day ran 15.1 after 15.1 in his R31 GTS that only had an exhaust.

What power did the GTS make? I think it was some where around 140fwkw.

[342Four]

15.1 from a GTS1 or 2? 2 bit more powerful (around 140ish kw at engine)

whatever, thats pretty fugen quick

i guy in my class had a r31 wagon that ran a flat 16 with quite a few bolt on things, and some match porting, that was about it (thermo fans, mini spool, catless zorst were the major stuff)

Edited November 23, 2006 by usherly

[GTS-167]

That really is a worry when a couple of years back a bloke at a private air drag day ran 15.1 after 15.1 in his R31 GTS that only had an exhaust.

What power did the GTS make? I think it was some where around 140fwkw.

Yeah that's it, 140.... I've got one

Doesn't surprise me though..... R31's are a fair bit lighter than a 4dr R33.

The GTS's make pretty decent power up top compared to normal RB30E's, and 3.9 diff instead of 3.7

[dondesoto]

Gday , not here to brag about my car . Heres a few things i did to my RB30DE to get 14.1 @ 97 mph . For starters its in an r31 station wagon and only wieghs around 1300 kg . Get as much wieght out as possible , like spare tyres tool boxes , towbar if it has one .

Am using a rb25de gearbox , so same ratios as yours . Diff has 4.11 pintara gears and a mini spool ( locker ) . Tyres were just 195 60 x 14 radials with 20 psi . Advanced the ignition timing approx 4 degrees , diconnect the vvt solenoid . Diconnect the exhaust at the end of the extractors ( you,ll love the noise too ).

Hope this helps you go quicker .

Edited November 23, 2006 by dondesoto

[BADR33]

my diff ratio is 4.3... but a single spinner isnt much use on a slippery track. with stiff suspension and 18s and 2.5deg camber in the back...

next time i will put stock suspeinsion in. run some 16s possibly with semi slicks

yeah i loved the sound with just dropping the rear muffler off.

cheers guys. the next one is in about a month so ill see if i can improve on my time...

[NA power]

so do you have any KW fig's on what this Rb30de made????

[skyla]

last I heard it was making about 123rwkw and I beleive he's got his 1/4 mile time down to 15.2

[NA power]

i was expecting more than that.... is there more left in it??? did you change the cams???

[Cubes]

Where do you NA blokes have peak power being made with the rb30de's?

Us turbo blokes find power peaks around 5500rpmish with the std plenum, aftermarket plenums have power on the stock cams peaking around 6400rpm but more importantly power holds really well to 7500rpm. On stock cams.

[BADR33]

um mine peaks at like 6000ish i think. there will be a dyno sheet on here somewhere but revs to 7 in a flash... still on stock ecu as well...

yeah rach you got that right it was 123rwkw and i did run a 15.2...

basicly the 123rwkw is just becuase the car hasnt been tuned and has hardly had any real mods done to it yet.

the NZ tracks arnt very sticky. well the track i was on wasnt very good as it had been raining that day and the night before... plus i needa pratice launches etc cus a 2.2 60foot isnt that good. that 15.2 was done with street trim plus sub and clothes and stuff.

i still have the vvt cams in.. but i will be sending them to get reground soonish to help with top end power for the strip

[are33]

Hey guys, I have a 1997 r33 GTS25 series 2, Towards the end of the year i am looking to make my RB25DE a rb30de. I have read http://www.geocities.com/rb30_twincam this guide but i am only 17 and not exactly sure who to go to for help and i wouldnt be able to do it myself.

Im just gathering research atm

1. Where could i take my car to get this done.

2. Is this possible with my engine.

3. Where do i start with the process and how long will it roughly take from start to finish.

4. Total cost excluding labour from workshops if done at one.

Any help would be great.

josh.

[BADR33]

i can answer one of your questions, and that is yes you can do it with your engine.. but as in using it for parts.. the head will need to be modifyed to fit the block slightly as well. the others you should probly start a new thread for.

update for my car:

my link ecu has arrived, just waiting on finding a cable to tune it and for the car to be drivable again, its got clutch/gearbox problems.

also have got 2x xf throttle bodys that i am modifying at the moment, then all i gota do is make up some flanges and get the hole lot welded up

[Cubes]

Just drop a turbo on it.

The legalities of doing an rb30 are no different to dropping a turbo on it.

Both with void your insurance.

[are33]

I cant turbo my car, I come under those new laws.

How does doing that void my insurance? What if i tell them about it, but just keep the insurance agreement the same.

[Cubes]

Speak to your insurance company about cover and modifications that are not deemed legal by the state.

I went shopping for insurance this year. I called every insurance company I know of (Famous car insurance, young and cool, just cars, shannons) that deals with imports.

ALL said you are required to tell us what modifications have been done to the car BUT its then up to you to make sure those modifications are 'legal'. If those modifications are not legal we can refuse to pay a claim.

Its just another way to possibly get out of a claim should you mess up bad and cost them a lot of money.

[are33]

I always thought n/a to turbo and etc conversions were legal? You just had to take it to a qld transport and get it engineered and mod plated. Or is that not the case anymore.

[mitchloves180sx]

rb25de head that has been rebuilt and modifyed to fit rb30 and run VVT $1050 all up (i got lucky with the guy RIPS selling the part that he was going to use on his drag car) the mods were $500 with a braided line to run vvt.

what needs to be modified on the head to make it go straight onto the rb30 block? & do i HAVE to run VVT?

[Rolls]

Its just another way to possibly get out of a claim should you mess up bad and cost them a lot of money.

Unless the modification directly contributed to the accident they can't refuse your payout.