Stock Rb26 Power Limit On E85

[usmair]

Hello

so it is generally agreed on this forum that the power limit for a stock bottom end rb26 on 98 is around 350kw...

now I know it all comes down to how its treated and tuned etc, but do we have any indication of the upper power limit of a stock bottom end rb26 on e85?

mine seems to be making healthy power and is going strong

my brother's is making 440kw on a stock motor and has been going strong for months

know of a few other stock bottom end GTRs making the low 400kws mark on e85

The Mercury Motorsport GTR is making a whopping 600kw on a stock N1 block with this fuel

so I ask you, what do we think the limit is....

this is more of a discussion rather than trying to figure out the exact number because it does heavily depend on treatment, tune, motor condition etc etc

What do you think? Do you know of any other stock bottom rb monsters? or have you seen high power stock bottom ends rb26s with e85 fail at a certain power level??

Discuss

Edited November 4, 2012 by usmair

[reeceo21]

How long is a piece of string ?

[GTRsean]

32's are long in the tooth, 33 and 34's have a better chance these days.

[STATUS]

depends on what its used for and the boost level, its common to make big power but i would guarantee unless its drag (full load for 9-12 secs at a time) etc a 500-600awkw gtr is not going to last many laps (1/2 hour at a time) in a circuit type situation...

[usmair]

yes thats true

all the cars I know off are street cars who ocassionally see the drag strip on a wednesday night

even so, having 500kw 'last' on a stock motor is pretty impressive.

[DVS JEZ]

The way its driven is the most crucial part. Thrash it and it wont last.

Squirts here and there should last.

Circuit probably wont last.

My own GTR is 402kw 22psi E72

Has only had dyno and drag time, 2 street cruises

Just have to be prepared if u want to push limits and it does let go u have to accept the fact.

Ur on 370kw now right?

Did u sort out the issue's u are having.

[usmair]

Yep agrees it depends on application and how it's treated.

I do have a 2.8L stroker fund put aside but would prefer not to utilise it if not necessary.

Mine is running well actually... Had a big cut in one if the piping.. Once that was replaced the boost and power was back to how it was before.

Still keen to chuck it on another dyno though... Anyone know of any awd dyno days coming up in Sydney??

[SiR_RB]

Il be pushing 400kw soon on e85 stock bottom end

Street use and drags only

If it pops who cares rebuild it, it's all part of owning a GTR

[wolverine]

Yep agrees it depends on application and how it's treated.

I do have a 2.8L stroker fund put aside but would prefer not to utilise it if not necessary.

Mine is running well actually... Had a big cut in one if the piping.. Once that was replaced the boost and power was back to how it was before.

Still keen to chuck it on another dyno though... Anyone know of any awd dyno days coming up in Sydney??

Stick it on Jez's 2WD.

[SimonR32]

Hoping mine is going to last... Going to run around 420rwkw for the track and a bit more for fun times

Time will tell how long it lasts

[mico]

one put together in the factory can be alot more reliable than a built one.

[GTRsean]

If looked after....

[GTR_JOEY]

Yep agrees it depends on application and how it's treated.

I do have a 2.8L stroker fund put aside but would prefer not to utilise it if not necessary.

Mine is running well actually... Had a big cut in one if the piping.. Once that was replaced the boost and power was back to how it was before.

Still keen to chuck it on another dyno though... Anyone know of any awd dyno days coming up in Sydney??

Unigroup is having one in December ive been told....would be good to see a few of the bigger HP cars around Sydney there on a level playing field

lets see if they make the power they all say they make

its a RWD dyno only but im sure we can get the front shaft taken out for such events

[usmair]

do you know the date?

[GTR_JOEY]

not sure buddy, im sure it will be posted in the NSW section once it is announced.. im guessing it will be a weekend early to mid december

[R31Nismoid]

The Mercury Motorsport GTR is making a whopping 600kw on a stock N1 block with this fuel

800hp, or there about - but having they are building a 3.2ltr for "when" it dies.

I think no-one is under any illusion there what will happen eventually, least of all the owners of it.

Its the age old saying, if you cant afford the rebuild then dont chase the power. The fuel being used is irrelevant when its a 15yo motor.

[DVS JEZ]

Check ur post Ash. Missed a " 't "

[R31Nismoid]

oh... hehe

[dkbcleaner]

one put together in the factory can be alot more reliable than a built one.

if left standard and not tracked

[MJTru]

i was impressed when i finally got my r33 GTR, and just stuck a GTX3582r with 6boost manifold twin scroll. power fc with two z32 afm 2 hks bov vent back in, and intank Tomia pump. at the same 1 bar and a good tune stock injector at close to 8000 rpm the check light would flash (injector max out)

124 mph in the quarter dont remember the ET.

but i will never buy another gtst. lol