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well one of my points is that you dont need forged pistons or different rods to make 700 hp from an rb 26 that is a proven fact you need turbo / 's to suit and a fuel system

cams you can reprogram the r32 gtr ecu or you can fit a plug in power fc or what ever ecu you like.

take for example an rb 26 for sale fully rebuilt stock pistons 272 cams balance, ecu etc 7500 turbo /'s to suit 3-4k injectors 1 k cooler 1500 ,fuel pumps 600 add 2k for things forgotten am I close?

hey squizz,

i didn't imply that the RB20 box will be good for 10's, i was mearly saying that it will be a simple bolt-up operation if he goes the RB30 conversion which will be nice for the street.

do u think a 3 spd auto with a 4000rpm converter, factory 4.11s in the ass is streetable?

meggala,

you're right, although $7.5k would only be for the engine w/out ECU/loom/injectors, etc, twin bb turbo's would cost more on the $4-5k, full fuel system would be about $1k, ECU (Power-FC) ~$1.5k or Autronic/Motec ~$3k, injectors - ~$1k and you've forgotten manifolds and external wastegates (needed for this kind of power) which would be more in the field of $3-4k.

So, you're looking at about $17-18k+ for a standard (reco'd) RB26DETT engine where for less than that, you'll have a fully rebuilt and forged RB30 bottom end along with the RB25DET which is very capable of producing the stated ~700hp reliably.

Also, given that it is a larger capacity engine (3000cc vs 2600cc) there will be more torque and it will produce the power easier, with less boost and rpms.

Speak to Mattlowth, he'll tell u what it costs and the capabilities of the engine. his is making 320rwkw (430rwhp) on only 16psi.

I'm sure if it's pushed a bit more, it will comfortably and reliably make over 500rwhp.

Originally posted by InExtremis

Hey riggaP, How is power/fuel consuption related to physics???

Fuel stores the potential energy that gets combusted and eventully makes the car move. To move the car faster you need to convert more chemical potential energy into mechanical kinetic energy (ie make it more efficient with the same amount of fuel) or alternatively let more fuel and air into the engine to combust (which is gonna be inevitable if were talking a 10 sec car).

Getting a car that runs 14s into the 13s could be done by making the engine more efficient (ie aftermarket ECU) without a significant increase in fuel consumption, but to get from 14s to 10s is gonna require a shit load of fuel to produce the power required hence making it a crap daily driver (just one of the reasons anyway).

I hope that makes sense...

riggaP,

Yes I understand the fact that potential energy leads to kinetic energy, this is the same for everything that moves, but increasing fuel and oxygen to create additional power doesnt just relate to physics. Remeber we are only talking about the power/fuel ratio.

Of course a moving car is related to physics, but when talking about the AMOUNT of fuel that is required to put out an AMOUNT of power, it is not just physics but also involves mathematics and chemistry.

The additional oxygen and fuel is used to create a greater CHEMICAL reaction, thus this reaction uses more fuel and creates more power. The fact that this reaction creates kinetic energy is irrelevent, because the consumption of fuel has already been determined from the chemical reaction.

Thus an increase in power is a result of a greater chemical reaction, where a greater volume of chemical components are required.

I agree that physics are involved, since the final output is power and cars move! but the ratio itself relies on a chemical concept, the physical concept is simply the result. I think what you meant was that it is simple science.

I don't mean any harm or flaming, all in good fun. :)

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