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Highest Power Outputs N/a

CR34M

By CR34M,
in Engines & Forced Induction

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Eug Grand Master

Eug

Posted
Posted

trying to do something different and unique appeals to self worth... just like people who sticker up their car and have big fancy kits and wings. it doesn't matter what others think but the fact is that you like it and it appeals to you. so if you want to make 250rwkw NA and spend bucket loads of money go ahead. but...

not directing this at you joshua, but since we are on the topic of power. i still fail to understand the 'dream' people have to attain more and more power. i understand that power is a quick standard everyone uses to assess the engine - however you don't need massive amounts of power to go fast!! that said if you're simply wanting to make more power, then boost is your answer. if you want to create art (and i use the term loosely here for those ricey ones) then do what your wallet allows you to!

cheers

eug

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infamous_t Veteran

infamous_t

Posted
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Nissan VH41DE... will give you your power output out of the box, its still NA, sounds beautiful, about the same weight or less than an RB(VH is an alloy engine)... and the conversion should leave change from $5K

Eug Grand Master

Eug

Posted
Posted
Nissan VH41DE... will give you your power output out of the box, its still NA, sounds beautiful, about the same weight or less than an RB(VH is an alloy engine)... and the conversion should leave change from $5K

may as well go for a VH45...

unfortunately i dont think you'd see any change from $5K unless you could do a large portion of the work yourself. i know john has easily spent more than that and he initially did it on the cheap!

Eug Grand Master

Eug

Posted
Posted
:) Im not giving anything else away

LOL... nothing is confirmed yet. i'm waiting until after i graduate (july) - however the RB25 has fux0red it's head gasket and measurements are currently being made for the transplant hint V

the plan will also be to build the RB30 as a side project and whack on the head from the 25 - which is far more appealing to me :)

scathing Grand Master

scathing

Posted
Posted
If the displacement is equal, you will never get a NA car to match a FI car once you start modifying both.

does F1 count? :woot:

Yes it does.

Have a look at the projected power outputs of the old 3.0L engines. Then compare it to the 1.5L turbo engines of old. NA has double the displacement, 20 years of development by some of the finest mechanical engineers, and only makes 2/3 of the power.

The 2005 3.0L F1 engine makes about 1000hp, and you know that if an F1 engine builder can't make more power out of that litrage then no-one can. There are 2JZs making significantly more power than that.

SKiT_R31 Experienced

SKiT_R31

Posted
Posted (edited)
does F1 count? :woot:

Yes it does.

Have a look at the projected power outputs of the old 3.0L engines. Then compare it to the 1.5L turbo engines of old. NA has double the displacement, 20 years of development by some of the finest mechanical engineers, and only makes 2/3 of the power.

The 2005 3.0L F1 engine makes about 1000hp, and you know that if an F1 engine builder can't make more power out of that litrage then no-one can. There are 2JZs making significantly more power than that.

I dont get what your trying to prove? Its obvious that your allways going to get more power out of a FI engine, but it doesnt mean you cant get decent power out of n/a.

a fairer comparison is a 1.5L boosted on 1 bar vs a 3L n/a, or a 2L boosted on 0.5 bar vs a 3L N/A, as they have the same theoretical capacity

im gnna try and hit 120rwkw in the n/a 34, do a manual conversion...then the rest is up to my little brother who gets his license in a few years!

shouldn be easy as, it wouldn't be far off that now would it?

Edited by SKiT_R31
scathing Grand Master

scathing

Posted
Posted
I dont get what your trying to prove?

Have a read through the quoted posts, and work it out.

I said that, once you start modding, a FI engine of the same displacement as NA will always make more power. Eug asked if F1 engines counted. I provided evidence that, even in F1, forced induction ruled.

Its obvious that your allways going to get more power out of a FI engine

Not to ER3425GT, who started this thread.

He said he wanted "non turbo yet equally powerful to a turbo model". I told him that, displacement for displacement (and implied mod budget for mod budget) that just wasn't ever going to happen.

If it was "obvious", he wouldn't have asked.

CR34M Community Regular

CR34M

Posted
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im gnna try and hit 120rwkw in the n/a 34, do a manual conversion...then the rest is up to my little brother who gets his license in a few years!

i pushing out a measely 123rwkw with my 34 n/a...its not very impressive haha.i got a straight 2.5" all the way down that gives it a good kick and some other lil things hear and there.

really want to know what engines are a good fit for skylines....other than RB's

scathing Grand Master

scathing

Posted
Posted

If you want to stay NA, there's only so many engines you can choose from.

If you're looking at staying in the family, bolt in a V8. If I remember correctly, a VH45DE can be tuned to make mad power while still being NA. I'm pretty sure they'll go out to 6.0L.

Nismo's 380RS track car makes 400ps from its 3.8L engine, and the bits required to build it are available if you've got the coin. There's a company in the US that offers 4.2L crate VQs, but they're set up for FI. You could use their sleeve kit and get custom, NA-oriented, bits to obtain the same displacement but with a high compression ratio and low reciprocating mass.

Bang-for-buck for the engine itself (so ignoring the costs install said engine into the car) its hard to go past a Chev small block.

SKiT_R31 Experienced

SKiT_R31

Posted
Posted
Have a read through the quoted posts, and work it out.

I said that, once you start modding, a FI engine of the same displacement as NA will always make more power. Eug asked if F1 engines counted. I provided evidence that, even in F1, forced induction ruled.

Not to ER3425GT, who started this thread.

He said he wanted "non turbo yet equally powerful to a turbo model". I told him that, displacement for displacement (and implied mod budget for mod budget) that just wasn't ever going to happen.

If it was "obvious", he wouldn't have asked.

Now heres where your wrong. There is no reason why an n/a cant produce more power than a factory turbo, from your quote, you are saying that it cant happen, well it can. whats a stock rb25det got? 140rwkw? You could happily get that out of an rb25de, more even, and thats with the same capacity.

But if the question is, can a N/A produce more power than a turbo, then no, because no matter how much work you put into an n/a, the same can be done + boost imo.

as for the origional question, 180-200kw is achievable with a 3L bottom end, and with less work than people seem to think.

Lithium Grand Master

Lithium

Posted
Posted

To be fair the RBs fail at NA. I'd be much more inclined on going a different car or going to the length of transplanting a VQ35 or something like that in it. The VQs straight off the bat make more power than any of the non-GTR turbo RBs, and respond nicely to mods. If you kept the hood down, you might even be able to pass it off as a normal NA skyline :thumbsup:

steve33 Collaborator

steve33

Posted
Posted

i got a non turbo and i see no point in working them unless for track work. whats the use when u can buy a turbo for nearly the same price. i few of my mates have 33's and with front mount, 12psi n a 3 inch exhaust they all made between 205-212rwkw so why bother spending thousands on less then 150rwkw

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