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N/a Engine Same Internals?

Spartann

By Spartann,
in Engines & Forced Induction

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Spartann Rookie

Spartann

Posted
Posted

i was at autobarn today and i dont know if this guy was spinning crap to me but he told me that

the only different and the rb25de and rb25det is nothing since that didnt want to waiste money on changing internals he said the only thing i need to change on my rb25de engine is the decompression plate and the head gasket and then i can add a turbo and get an ecu and get it tuned? is he correct or is he spinning shit to try and look good?

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https://www.sau.com.au/forums/topic/174021-na-engine-same-internals/
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1400r Veteran

1400r

Posted
Posted (edited)

yes its true just high comp and no piston squirters is the only difference

I know of one 33 NA 25 make 265rwkw on 12psi wt hks 2535

without a different h/g

so depending on your needs your current motor may be fine

Edited by 1400r
Spartann Rookie

Spartann

Posted
  • Author
Posted
yes its true just high comp and no piston squirters is the only difference

I know of one 33 NA 25 make 265rwkw on 12psi wt hks 2535

without a different h/g

so depending on your needs your current motor may be fine

what do u mean are u saying i can gain decent kw gain from other addons and just keep it a n/a engine?

i wouldnt mind leaving it n/a if i had some decent power

Spartann Rookie

Spartann

Posted
  • Author
Posted
yeh no

turboing your current motor may be fine for your power goals

i have a turbo and everything i need right now except for the ecu and the decompression stuff.

can u name everything i would need to change it over internal wise... is it just called a decompression kit ?

and i have a turbo that runs 15psi on the lowest setting.

im pretty sure this is what its called. it has a nissan rb25 turbo front housing with a garret gt30 front comp wheel with a ar63 or 62 rear housing.. my mate had it on his drift car he said its a 500hp turbo does that sound correct?

Spartann Rookie

Spartann

Posted
  • Author
Posted (edited)

hello could anyone here please tell me what it is i need as i heard i only need this decompression plate?

would it be better with a better head gasket aswell?

and could u please give me the name of what plate/hg i would need or even a site for it would be better

and whats the piston squirters 1400r was talking about

Edited by Spartann
1400r Veteran

1400r

Posted
Posted (edited)

just go a larger head gasket

to obtain atleast the same comp ratio as a factory turbo motor or less

and get that turbo running less boost 12 psi is probably max you would want to run

ps theres a NA section on here somewhere with a how to turbo your na 33 would be worth reading that thread

as it would have all your answers

here it is

http://www.skylinesaustralia.com/forums/in...showtopic=69998

Edited by 1400r
Spartann Rookie

Spartann

Posted
  • Author
Posted
just go a larger head gasket

to obtain atleast the same comp ratio as a factory turbo motor or less

and get that turbo running less boost 12 psi is probably max you would want to run

ps theres a NA section on here somewhere with a how to turbo your na 33 would be worth reading that thread

as it would have all your answers

here it is

http://www.skylinesaustralia.com/forums/in...showtopic=69998

hi i read the turbo on n/a post but they didnt talk about having the same internals.

they said just leave the compression ratio which i dont want to do. if i just change the head gasket would the engine be able to withstand 15psi? or would i need to upgrade to forged pistons?

STATUS Grand Master

STATUS

Posted
Posted
hi i read the turbo on n/a post but they didnt talk about having the same internals.

they said just leave the compression ratio which i dont want to do. if i just change the head gasket would the engine be able to withstand 15psi? or would i need to upgrade to forged pistons?

the std internals will cope with 15psi.... depends on your tuner as to how long it will last.

  • 2 weeks later...
boostin_r33 Collaborator

boostin_r33

Posted
Posted

mine was orginally a na but I converted to turbo just changed the motor apparently alot is different cams, pistons most of which are made for forced induction which are also stronger also your gunna need a different fuel pump if ya gunna b running high boost, the na gearbox wont handle the torque neither the brakes which are alot smaller if you intent to stop and the diff is made for top end the turbo model is for better acceleration you's may think i dont know but ive been there!

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