How Much Power Can A Standard Rb25Det Handle

[filo_a31]

This topic has probably been covered a million times but i cant find it.

Just wondering how much a power an rb25 with stock internals can handle all day every day on a safe tune?

My current project is: rb25det (standard motor)

550cc injectors

hks gt2530 turbo

14 psi boost

apexi power fc

z32 afm

hks pod filter

hks fmic

hks 3.5 inch turbo back exhaust

If there is already a write up can someone please let me know.

Cheers

[wolverine]

With that turbo you won't go close to any limits assuming half way decent tuning.

[Simon-S14]

im pushing 350 rwkw + on stock RB25

and it gets driven HARD

tune it right with the right parts and it will look after you

[filo_a31]

awesome. Id be happy with 250-270 and i drive pretty hard, so i reckon i'll be sweet. As long as i get it tuned properly like you said

[75coupe]

Im not sure the 2530 will get past 250...

[zebra]

Would be lucky to even hit 250

[R31Nismoid]

HKS2530 will be pushing 230rwkw on 18-20psi.

Not realistically going to get much more than that.

A GT3071 will be required for 250-270

im pushing 350kw @ hubs + on stock RB25

Fixed.

[PM-R33]

awesome. Id be happy with 250-270 and i drive pretty hard, so i reckon i'll be sweet. As long as i get it tuned properly like you said

Your going to be very unhappy then.

As has been said 230kw is doable from one pushing it as hard as it can go. Friend had a HKS 2535 Kai on his and the most that ever saw was high 230s/low 240s.

[rondofj]

Why go aftermarket turbo when the stock one will reliably handle n make 30 less kilowatts?? Ie 200 rwkw. If u wana go aftermarket then mite as well go for at least 270 rwkw and up

[Simon-S14]

HKS2530 will be pushing 230rwkw on 18-20psi.

Not realistically going to get much more than that.

A GT3071 will be required for 250-270

Fixed.

get over it ash.

[R31Nismoid]

Stop misleading users with false claims, and i'll stop pulling you up on it - deal?

[Lithium]

Far out Mr Ash, hell I try and be specific about "@ hubs" but still occasionally let "@ wheels" slip, its easy to do given the difference in many cases is negligable and its basically more to quantify that it wasn't on an engine dyno. If you want to get pedantic you may as well make a forum rule that every time someone says a dyno result they say:

Ambient Temp:

Ambient Pressure:

Tyre Pressure:

Tyre Size:

Tyre Profile:

Tyre Temperature:

Tyre Type:

Gearbox type:

Dyno Type:

Dyno Correction method:

Air Intake Temperature location:

Ramp rate:

Tie down method:

But thats just taking silly and running with it

[wolverine]

When you see outlying results (high or low) from an engine and turbo combo it is always going to get extra comments.

[R31Nismoid]

Far out Mr Ash, hell I try and be specific about "@ hubs" but still occasionally let "@ wheels" slip, its easy to do given the difference in many cases is negligable

It's not occasional in this instance (otherwise i totally agree with ya). Back-to-back testing was done by another user that shows that particular hub dyno reads a solid 40-60kw different. That's a bit more than 2 degree change in ambient temperature

I say all this because of the thread title "How much can a standard RB25 handle".

People get it in their heads that it's ok to run around making "350rwkw+" when people go around making false claims, when realistically thats really taking a gamble and not a good idea at all.

Over the next 12 months i think we might see a few more 300-320rwkw RB25's fail as there are a few users who have been around that mark now for 2-3 years. So perhaps even 300rwkw isn't that safe.

We have to remember that not everyone wants to go through the expense/drama of a dead motor/rebuild

[ClutchBurndout-:(]

does it have painted rocker covers?

= 20kw

[joeyjoejoejuniorshabadoo]

Fwiw my motor lasted 3 years on 285rwkw pulp and 325rwkw e85 before it finally munched a bearing

That motor was a series 1, 1993 built, 250,000km engine and was a track car of some sort in Japan for god knows how long

Thing saw 7000 revs every time it ran, without fail and was dailied and tracked

[boostn0199]

End of the day whenever you decide to mod the car and start pushing high 200,s plus on stock engine we all do it knowing all well that theres a chance that the engine might die sooner than expected but theres to many variables how you drive , how much you drive it, and of course the tune.

Of course a car tuned at 350kw which is a daily and never sees all that power being put down will last longer then someone at 280kw thats smashing track work constantly. But atm it seems like the median of what people go on stock is 300kw and also consider running on e85 for abit more security.

[STATUS]

This topic has probably been covered a million times but i cant find it.

Just wondering how much a power an rb25 with stock internals can handle all day every day on a safe tune?

My current project is: rb25det (standard motor)

550cc injectors

hks gt2530 turbo

14 psi boost

apexi power fc

z32 afm

hks pod filter

hks fmic

hks 3.5 inch turbo back exhaust

If there is already a write up can someone please let me know.

Cheers

about twice as much as your turbo can deliver.

[STATUS]

awesome. Id be happy with 250-270 and i drive pretty hard, so i reckon i'll be sweet. As long as i get it tuned properly like you said

0% chance.

[STATUS]

It's not occasional in this instance (otherwise i totally agree with ya). Back-to-back testing was done by another user that shows that particular hub dyno reads a solid 40-60kw different. That's a bit more than 2 degree change in ambient temperature

Ash this may interest you as i know your a racepace (killer workshop) fan boy.

We see quite a few cars from Racepace through nowadays and the results we see from our hub dyno are very close to the dyno dynamics dyno (generally 10 up or down) they are running... so hub versus roller is moot.

In fact only last week had a bayside blue R34 gtr with t518z's from there last week which pulled 280kw on mine and he had a dyno sheet for 290 from racepace exact same boost.