Jump to content
SAU Community

Recommended Posts

Hello

I am new to this forum site.I would like to know what is the highest HP at the Rear Wheels produced by an Rb25 motor.

I currently have a GTST skyline and with the standard Rb25 motor and pumping out 498 Hp on 18 PSI.It is a manual skyline.I am running a Standard Motor,GT3540 turbo,Custom plenium,750cc Injectors,Hydra Computer,125 mm thick cooler with HKS style end tanks,3 " intercooler pipes, 3 "exhaust,Aftermarket coil packs.The engine has been run on the dyno about 150 times checking things and testing as i am trying to prove what the standard rb25 motor is capable of.

I am wanting to see who has made more hp.A dyno sheet is available and the dyno is on my own Dyno Dynamics Dyno running shootout mode.Intake Temps on the dyno sheet are 34 degrees and the room temp is 30 degrees.

Thanks

PS this is on Opitimax fuel.

Edited by LNEMUP498HP
Link to comment
https://www.sau.com.au/forums/topic/106775-max-hp-out-of-standard-rb25/
Share on other sites

Yeah buddy

im going to be using this car for drifting and drag.

Its my business vehicle.I own Wild 1 Motorsport along with my Father.The vehicle is going to get rego next week as while i was building it i ran out and yeah i will be driving it.

Yeah completely standard. I Have got another motor i am building with h beam rods, Forged pistons,ARP main,conrod,Head stud kit,Cometic head gasket,Tommie cams and springs which i will be dropping into the car as soon as something goes wrong with this one.I thought i will prove ppl wrong about the standard motor.

498hp on std rb25...mate that is impressive. Now we just gotta wait for someone to come along and say 'thats a load of the "proverbial"'

What sort of knock you getting on your current tune?

  • Like 1

i am going to put the new knock sensor on tomorrow.The old one would detect to many vibrations for the engine on idle.

When i used the stithoscope or however you spell it.The knocks were very minimal.I am going to using c16 in it and see the power difference.

As for the Dyno graph I will do it with Hp And Boost to shut ever one who doubts it up.

If no 1 believes its standard. They can pay me to pull the motor out and if it is they can pay me if it isnt i will pay them.

No 1 should Doubt the POWER OF a NISSAN RB motors.

Edited by LNEMUP498HP

Nice work on the power figure :D

GT35's tend to make power well.

I dont think standard means much at this stage...

Make it last 12 months with SOLID work... and make sure you post backup if its still running as thats the real test, one that no-one has passed.

No winding down the boost either :O

You so adamant about "shutting people up" what are you trying to prove?

Anyone can run big power in a stock motor. A few power on the dyno runs doesnt impress anyone but the 15yr old kids :D

I saw 500rwkw+ from an internally stock RB26.

Needless to say it lasted not very long at all and died a dismal death

LOL

turn the boost down

the boost isnt going anywhere.

as for the motor

if it blows ahh well

i got my back up motor waiting.I wanna push the engine to its limit

runing just under 18 psi wont hurt the engine the head gasket is the only thing i see wreaking and the engine is reving to 7500

i will keep every one posted on how the engine goes and lasts.

Edited by LNEMUP498HP

You still have a little way to go, I have seen 550 rwhp out of a ZeniTani built R25DET (standard internals) using a hi mount T78. But like all RB25's with more than 320 rwkw, it didn't last very long.

It's not about "how much" power, but for "how long" it makes that power.

I have a question;

Hydra Computer

What ECU is that?

;) cheers :)

Edited by Sydneykid
Guest
This topic is now closed to further replies.



  • Similar Content

  • Latest Posts

    • Wheel alignment immediately. Not "when I get around to it". And further to what Duncan said - you cannot just put camber arms on and shorten them. You will introduce bump steer far in excess of what the car had with stock arms. You need adjustable tension arms and they need to be shortened also. The simplest approach is to shorten them the same % as the stock ones. This will not be correct or optimal, but it will be better than any other guess. The correct way to set the lengths of both arms is to use a properly built/set up bump steer gauge and trial and error the adjustments until you hit the camber you need and want and have minimum bump steer in the range of motion that the wheel is expected to travel. And what Duncan said about toe is also very true. And you cannot change the camber arm without also affecting toe. So when you have adjustable arms on the back of a Skyline, the car either needs to go to a talented wheel aligner (not your local tyre shop dropout), or you need to be able to do this stuff yourself at home. Guess which approach I have taken? I have built my own gear for camber, toe and bump steer measurement and I do all this on the flattest bit of concrete I have, with some shims under the tyres on one side to level the car.
    • Thought I would get some advice from others on this situation.    Relevant info: R33 GTS25t Link G4x ECU Walbro 255LPH w/ OEM FP Relay (No relay mod) Scenario: I accidentally messed up my old AVS S5 (rev.1) at the start of the year and the cars been immobilised. Also the siren BBU has completely failed; so I decided to upgrade it.  I got a newer AVS S5 (rev.2?) installed on Friday. The guy removed the old one and its immobilisers. Tried to start it; the car cranks but doesnt start.  The new one was installed and all the alarm functions seem to be working as they should; still wouldn't start Went to bed; got up on Friday morning and decided to have a look into the no start problem. Found the car completely dead.  Charged the battery; plugged it back in and found the brake lights were stuck on.  Unplugging the brake pedal switch the lights turn off. Plug it back in and theyre stuck on again. I tested the switch (continuity test and resistance); all looks good (0-1kohm).  On talking to AVS; found its because of the rubber stopper on the brake pedal; sure enough the middle of it is missing so have ordered a new one. One of those wear items; which was confusing what was going on However when I try unplugging the STOP Light fuses (under the dash and under the hood) the brake light still stays on. Should those fuses not cut the brake light circuit?  I then checked the ECU; FP Speed Error.  Testing the pump again; I can hear the relay clicking every time I switch it to ON. I unplugged the pump and put the multimeter across the plug. No continuity; im seeing 0.6V (ECU signal?) and when it switches the relay I think its like 20mA or 200mA). Not seeing 12.4V / 7-9A. As far as I know; the Fuel Pump was wired through one of the immobiliser relays on the old alarm.  He pulled some thick gauged harness out with the old alarm wiring; which looks to me like it was to bridge connections into the immobilisers? Before it got immobilised it was running just fine.  Im at a loss to why the FP is getting no voltage; I thought maybe the FP was faulty (even though I havent even done 50km on the new pump) but no voltage at the harness plug.  Questions: Could it be he didnt reconnect the fuel pump when testing it after the old alarm removal (before installing the new alarm)?  Is this a case of bridging to the brake lights instead of the fuel pump circuit? It's a bit beyond me as I dont do a lot with electrical; so have tried my best to diagnose what I think seems to make sense.  Seeking advice if theres for sure an issue with the alarm install to get him back here; or if I do infact, need an auto electrician to diagnose it. 
    • Then, shorten them by 1cm, drop the car back down and have a visual look (or even better, use a spirit level across the wheel to see if you have less camber than before. You still want something like 1.5 for road use. Alternatively, if you have adjustable rear ride height (I assume you do if you have extreme camber wear), raise the suspension back to standard height until you can get it all aligned properly. Finally, keep in mind that wear on the inside of the tyre can be for incorrect toe, not just camber
    • I know I have to get a wheel alignment but until then I just need to bring the rear tyres in a bit they're wearing to the belt on the inside and brand new on the outside edge. I did shorten the arms a bit but got it wrong now after a few klms the Slip and VDC lights come on. I'd just like to get it to a point where I can drive for another week or two before getting an alignment. I've had to pay a lot of other stuff recently so doing it myself is my only option 
    • You just need a wheel alignment after, so just set them to the same as current and drive to the shop. As there are 2 upper links it may also be worth adding adjustable upper front links at the same time; these reduce bump steer when you move the camber (note that setting those correctly takes a lot longer as you have to recheck the camber at each length of the toe arm, through a range of movement, so you could just ignore that unless the handling becomes unpredictable)
×
×
  • Create New...