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Hard Quistion About Rb26dett

almzro3e

By almzro3e,
in Engines & Forced Induction

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almzro3e Contributor

almzro3e

Posted
Posted

Hi all you guys

why rb26dett damage crankshaft ? when it powers littel

like big single and more fuel?

i have too many people says that it breaks its crankshaft so that

its not durable for daily use

one of my friends changed the engine 3 times and naw he swaps

to 2jz-gte because it handel 700hp with stock internals

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Jmaac Proficient

Jmaac

Posted
Posted

??

plenty of people are getting big hp on a stock gtr crank - not only street use either.

who tunes his car?

do a search, that might help you a little more

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sh@un Grand Master

sh@un

Posted
Posted

an RB26 is just a motor- if it has been poorly serviced during it's life (and that could be a loooong life if ur talking about a 32), it will do a bottom end bearing as easily as any engine where the owner didn't give a shit about changing the oil regularly. even standard

big turb, more fuel?: yes- due to lower efficiency at low revs (where most street engines spend most of their time), and usually combined with lowered comp ratios on rebuilt engines AND bigger injectors (which give much poorer fuel atomisation); which automatically means worse economy.

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700HP-GTR33 Mentor

700HP-GTR33

Posted
Posted

People forget how advanced this motor was for its time.......

They also forget how advanced a GTR was for its time.....

Not many people do the right thing when it comes to maintenance...even changing oil.

Not many tuners will advice that they should maybe think of rebuilding the motors....

Not many who blow there motors have a rev limiter or correctly functioning parts ..ie fuel pump...oil pump

and sometimes water pump.

So...the answer to your question...

Poor maintenance..poor set up..(on a 15 year old engine)..without much knowledge on the engines condition

and its previous use can cause lots of engine failures.

You say your friend has done 3 motors....

How does he drive?

How high does he rev the motor?

Has the car got a after market computer?

How often does he change the oil?

Please outline yourself before saying these sort of things.

I know of one such case......

Every time a second hand motor was ordered.

The HKS cams came off the old motor

The Turbo's N1 Group A were taken off the old motor.

Then put back with a stock computer.

Hi revs..with Cams that only work on a after market computer caused all failures.

There was no rev limiter inplace...so regularly it would rev to 9K

I have a GTR33 96....the first things I did was to change oil pump..,water pump, fuel pump and timing belt.

I never revved it high until I had a Powerfc..tune and correct boost controller inplace.

High revs without quick engine oil changes(filling to 1 litre over mark) can damage cranks.

Especially stock cranks.

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sh@un Grand Master

sh@un

Posted
Posted
People forget how advanced this motor was for its time.......

the only advanced thing about RB26's in 1989 was the ignition system (optical crank-angle sensors, sequential injectors, and coil-on-plug ignition was well ahead of a lot of cars in the late 80's). but the Z32 300ZX copped just as good anyway, as well as other Nissan engines

the engine design/mechanicals, and non-sequential turbo set-up, on the other hand, was very much straight down the line

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sh@un Grand Master

sh@un

Posted
Posted

okay- i'll pay the ceramic 'turbs (even though they are only good for standard, non-race cars), but exotics had multi-throttle set-ups long before that: 6 dual down-draught carbies on Ferrari or Lambo V12s, anyone?

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almzro3e Contributor

almzro3e

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dear 700hp-gtr33 thank you so much for what you sayd

and really i think thats the damage came frome his carles

espiceally on oil change but the bworest thing that he was

using after market ecu and rev high with standard motor and oil pumps

i really thank you cause i am going to get one rb26dett engine

i love it too much but the people here make me worry but am

verry carre man i take car of any thing in my cars

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almzro3e Contributor

almzro3e

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??

plenty of people are getting big hp on a stock gtr crank - not only street use either.

who tunes his car?

do a search, that might help you a little more

thank you too much brother :)

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infamous_t Veteran

infamous_t

Posted
Posted
Hi all you guys

why rb26dett damage crankshaft ? when it powers littel

like big single and more fuel?

i have too many people says that it breaks its crankshaft so that

its not durable for daily use

one of my friends changed the engine 3 times and naw he swaps

to 2jz-gte because it handel 700hp with stock internals

damn toyota fan boys :D

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HIJAKD Explorer

HIJAKD

Posted
Posted

iv built many big hp rb26s with stock cranks,iv wittnessed marks gtr make 1000hp atw with a lightly modded stock crank,iam driving a gtr atm that makes 550hp at all 4 with stock crank,so u need to check other avenues

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