how much will I pay for power

Does anybody know how much it would cost to modify a RB25 or 26 engine to put out 400-450 hp? Also, I've seen a lot of power output numbers rated in ps, what is ps and how does it relate to horsepower? I keep thinking about all the physics I've had in school, but ps doesn't ring any bells. Thanks.

kidracer9

It varies a great deal. To make 400-450 out of an RB25DE is an assload. An RB25DET is expensive
but it can be done. An RB26DETT is pretty easy. New ECU, boost control, exhaust and intakes will
give you 393 at the wheels....that's about 460 HP. PS is very similar to HP. The ratio is something
like .963PS = 1HP.

Would going a twin turbo setup on the rb25 be an easier way to get the 400 hp mark?

actually no. I would start with a TD06 25G turbo, power FC ecu, bigger injectors, 3"-3 1/4" exhaust, good pod filter, adjustable fuel pressure regulator, high volume fuel pump, electronic boost controller, 2mm metal head gasket, and a good front mount intercooler.

With the right tuning and about 1.1 bar of boost you should see at least 240kw at the wheels which is about 321bhp. That would put you up to about the 400 hp mark. It has been done here in New Zealand with a 1995 R33 GTS25t. He actually thre 250kw on a dyno that is very tough to get good numbers on. Most R32 GTR's are only throwing around the 200kw mark with a little more boost, exhaust, and pods. Ithink he had around the $10K mark in the car.

Do you want to use 400 to 450 horsepower all the time when driving around or just at those special moments?



If you want to know you've got it when you need it just go a Nitrous Kit on a close to standard slightly modded GTS25T. 300 HP is a doddle to get at the engine so just add a 100HP kit and you have unbeatable bang for buck without losing smoothness or reliabillity (just don't go over 100HP most crappy old holden sixes can take this size kit no problem'o so a much stronger and engineered RB should jog it in). I'm waiting to hear how far the safe margin is above 100HP but, thats quite alot.


Zex, Venom, NOS and OZracing have various kits, they have different strengths deppending on the kit size and application.

Quite satisifing to say to someone you just beat ' Na, its pretty stock mate just exhaust and filter '

Subzero have a package that guarentee's 10sec 1/4 mile times. this is for a r33 gts-t skyline. this does not include a gearbox. cost $15500.




http://www.geocities.com/pvl747/pvl747.html

i forgot to mention how much hp. 412rwhp @ 29psi.
and a pic of the motor...



http://www.geocities.com/pvl747/pvl747.html

Originally posted by PVL-747
i forgot to mention how much hp. 412rwhp @ 29psi.
and a pic of the motor...


Be wary of that claim! The GTS-25T is 40Kilo's HEAVIER than the GTR (NON-Vspec). I have an R32 that is almost 80 kilos lighter pushing just under 500 RWHP and I usually pull low eleven, high tens in the quarter! Now I have 225/50R16...so I do lose a little traction with all that shove going into 225's, but I'm also doing it with four wheels (so I'm on something like 450/50R16's :rolleyes: ) If they are going to GUARANTEE it....fine...but somethin doesn't sound right...........

Oh....I guess I should also say....I paid 9g's for my setup...for 10 (which I now realise I should have done!!!) I could have upgraded to 770cc injectors and 264/275 Cams and been pushing in the 600's....darn it all!

the car has run 10.62 @ 127mph!

p.s. it ran out of revs across the line, it needs higher diff gears and it would see 10.30's!

Hmmmm...maybe I'm spinning longer than I thought:) I really should hit a track that will give me my 60ft times!

Did they do any weight reduction?

GTR2.7, no weight reduction at all. it's a 1993 GTS-T skyline, 2.5 litre, automatic. it was running a full exhaust system (3.5 inch system), D.O.T. approved race tyres at the back. not bad hey? 60ft was 1.6 sec.



http://www.geocities.com/pvl747/pvl747.html

Did they have a stock LSD? Or did they put a straight in with a wheelie bar? I don't see how it could be done without slicks.

it has stock LSD, with semi race slicks. they are Department Of Transport Approved. grooved slicks in other words.


http://www.geocities.com/pvl747/pvl747.html

GTR2.7L

We have VL commodore turbos - RB30ET with 261rwkw - 350rwhp pulling 11's. 350hp atw on avgas on dyno. It is pulling 11's.

500hp pulling 11s - That just does not seem right to me.

R33 GTSt has LSD. Your car is definately not a benchmark, youve got an 80gk heavier car with 88hp less at the wheels, pulling better times.
Maybe you should let a drag racer drive your car at the strip, and see what time it pulls?

PVL - I recall sub zero saying in the zoom that featured this car, that give them 15K, an engine/tranny/shell in any condition, and they will build u a car to do those times. cant find the mag though!

it was $15500. they do everything to the motor, they won't provide you with a box to handle the power. they have some good projects coming up. some serious cars! 40RCD was a basic setup. :)


http://www.geocities.com/pvl747/pvl747.html

I may not be dropping my clutch high enough...I haven't yet grown the balls to drop at 6k...although my buddy does it all the time in his '33 and hasn't had any major problems yet. I guess I'm just bogging down a bit. I'm going to try the track at Fuji and get the full read-out instead of our Tokyo track...it's just a measured track and a stopwatch. Obviously not proffessional, but I wouldn't think it would be that far off. Of course....I'm not running grooved slicks either (Yokohama DNA GP's....pretty much street tires).

I dynoed 402 RWHP last summer before my engine work (2.7L Bore-up w/ N1 Pistons, increasing my boost controller to 1.3 Bar, and adding 534cc Injectors w/ NISMO HICAP fuel pump). I just might not have gotten as much HP as I thought. I hope to be getting dynoed FINALLY within the next couple weeks. Post to follow.

dude, drop the clutch, stop bein a girl.

pvl - now i cant find the fucking mag!!!! grrr. u might be right tho. You are in with the boys at subzero as far as i know?

god i love being able to say fuck on here.

you can say 'fuck' on here!! wow!! cool!! hehe. yes i am right. :D

hey your not the one building a RB30/RB26 motor??

http://www.geocities.com/pvl747/pvl747.html

No, RB25/30. Once Im in the army for a bit there will be an expedient R32 GTSt around. I have found quite a funny feature car on the Rigoli site. RB30 bottom end, with the most fucked up execution and piss poor hp you could imagine, and stupid modification route. Check out the parts hes got, and the gaylord HP he is pushing.
http://www.rigoliracing.com.au/skyline.htm

:D:D:D Crack 400horse-fucken-power atw and ill be happy - nothing hardcore.

Fuck is such a great word.

i don't wish to bag anyone or anyones work. i know dom and his a good person. i have respect for him as has done well especailly with the WRX's!! and BOOSTN vl turbo- ran 10.28 @ 131mph.

here's a pic of a Subzero RB30/RB25 conversion. this is how all Subzero work leaves the shop, pretty and looking serious!!! :D


http://www.geocities.com/pvl747/pvl747.html

Oh hey I have met Chris and Sam, and they are great blokes, and the Rigoli's have some great cars.

But a NICS (what it looks like) head, on a 3L block, with custom intake plenum (which much more powerful cars don't even use), a Microtech and only 220hp???? He still has the stock turbo on.....
For what that would have cost, and 220hp as the result - I have to say, its laughable. Im not attacking the Rigolis at all, so dont get me wrong.
RB30DET with non variable cam timing RB25 head, 17psi through it, stock intake plenum - 467hp at the flywheel. Thats a bit of a comparison for ya.

You are into modified cars and know your stuff, and if you can say to me that its not a silly and fruitless effort on that car, that has cost some $, then fair enough.

Their 530hp R33 - i bow down.

slip, is that their black skyline with the RB30 block and RB26 head?? i've waiting for that to come out.

that motor pictured above has a standard R34 head, forgies, std rods, prepped crank, custom plenium, custom exhaust manifold, cooler, t66 turbo, at 22-23psi it made 470rwhp at autosaloon in brisbane. that's on avgas. it has gone to the track but keeps blowing top gear on the C4. best E.T. 11.3 @ 126mph with farked top gear. he will be returing to the track with a fully race prepped C4. :D

as for that car your talking about i won't comment. :)



http://www.geocities.com/pvl747/pvl747.html