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Rb 25 Inlet Manifolds. When Do They Cause A Restriction

SLIMVLT

By SLIMVLT,
in Engines & Forced Induction

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xxx_25L Collaborator

xxx_25L

Posted
Posted (edited)

what do you guys think of cutting the standard plenum and running the throttle body from, the front it would reduce heaps of pipe work and make it more responsive and if done what vacume pipes could be disgarded

Edited by xxx_25L
Turbo Tits Community Regular

Turbo Tits

Posted
Posted (edited)

hahahah, you flew right off the rails with that one! You quite clearly missed my point, but you almost got there. Good try.

Don't be so defensive, this is a discussion forum, so discuss. Encourage conversation, don't put people down.

Try thinking about what people say, rather than interpreting things so black and white. What makes you so sure that the meaning you took from my statement was the one I intended?

Lastly, if what I was thinking was "stupid", I would not have thought it necessary to add it to the "discussion".

:D

now that's a stupid response!....there's money in everything..geez u might as well say why upgrade your turbo or why are they selling them..to make money duh!... lets just do research for the sake of it...hahahahhahaha.....ffs...
Edited by Turbo Tits
infected flow Rising Star

infected flow

Posted
Posted
hahahah, you flew right off the rails with that one! You quite clearly missed my point, but you almost got there. Good try.

Don't be so defensive, this is a discussion forum, so discuss. Encourage conversation, don't put people down.

Try thinking about what people say, rather than interpreting things so black and white. What makes you so sure that the meaning you took from my statement was the one I intended?

Lastly, if what I was thinking was "stupid", I would not have thought it necessary to add it to the "discussion".

:laugh:

as u can see i was laughing and im still laughing....hahahahahahahah im not defensive im discussing the topic on hand..hahahahahahha....

SLIMVLT Enthusiast

SLIMVLT

Posted
  • Author
Posted

i have 1 tommie inlet cam (256) so thats good then.

i tink i will setal with a isp (arial) plenum they seam to be the pics of the group.

i think i could make good power with the standard manifold but i wanna make power with as litle boost/effort posible.

the less restriction the less boost so i mite go 1 of them

`nigno Rising Star

`nigno

Posted
Posted

Im currently in the midst of doing a full GTR ITB Conversion to my RB25 including custom manifold (leaning towards a plazmaman plenum) will keep you posted on before and after results if you are interested.

I know they wont be specifically related to the plenum alone as the ITB's are bound to make some difference but at least it will give you some scope of a real world application.

Turbo = T67-25g - Currently pulls around 500rwhp

SLIMVLT Enthusiast

SLIMVLT

Posted
  • Author
Posted

keep us updated.

also i wanna know how it all fits up and all that jaz chuck up some pics when your done.

the latest zoom mag has 1 of there plenums in it and it looks ok but it all depends on how it works

`nigno Rising Star

`nigno

Posted
Posted
keep us updated.

also i wanna know how it all fits up and all that jaz chuck up some pics when your done.

the latest zoom mag has 1 of there plenums in it and it looks ok but it all depends on how it works

Ive had to use a CNC machined adaptor to make it fit correctly ($500 from japland) and switch my fuel rail and injectors for GTR Items to suit... will definitely keep you posted. SHould come up a treat once its done.

Taffy Rookie

Taffy

Posted
Posted
So its 10psi and not 8psi now eh?

Which version of the story are we to believe?

But you are in the US remember, the figures are somewhat "higher", your 50rwkw is around our 30, which then (going to 10psi/management) is whats expected

Have you ever done this same build up and tested it on the same exact dyno to get readings? I have.

I am not sure if you read my first post correctly or not, but I said that it was at 10 psig up to about 6K, then all the way to 7500, it fell to 8 psig. At 8 PSIG at 7500, it made 310rwhp, which is 235rwkw.

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

You are in America.

Its impossible to compare, especially 235rwkw from 8psi.

If you wanna do accurate testing, bring the car over here and you'll see your 235 fall to around 180-170

With 235rwkw you'd better be dipping WELL into the mid-12 sec brakcet.

Look forward to you strip results. But i suspect you wont get better than a mid-low 13.

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