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Gtr Plenum On Gtst?

WLD747

By WLD747,
in Engines & Forced Induction

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TTT Grand Master

TTT

Posted
Posted

it's been proven before that you don't need the plenum changed unless you are flowing enough air for over 450hp.. also as mentioned before, it is a bastard of a job to do yourself and very expensive to make someone else do it for you (unless you know people in the trade who feel that they need a huge headache)

JNR24 Proficient

JNR24

Posted
Posted

LOL GTST!

Your making it out like its rebuilding a motor! Its about 2 hours of welding & 2 hours of precision cutting & filling.

Its not that hard to do, provided you can weld aluminium. Lining it all up is the hardest part.

WLD747, ask around at Jap wreckers. youl pick one up cheap enough. Remember you dont need any of the bullshit stuff, (THorttles, linkages. etc) just the plenum.

Cheers guys,

Trev

T0nyGTSt Grand Master

T0nyGTSt

Posted
Posted

I don't think GTST (Tolga from memory) is having a go at you.

Rather he's saying that any forward facing plenum on an RB25 is a lot of work installing because you have to eff around with FMIC pipes, injectors, rails etc. etc.

If you have the motor out, well fine but for a in car install, all the shite on the right side has to come out and some cutting of the metal under the washer bottle.

People do it for looks often and fair enough.

T.

R324D Community Regular

R324D

Posted
Posted

Hi

I have a GTR plenum on my r32...

I bought the car with it on, my mates dad did the job, and i bought the car off him.

going by what he has told me...

BITCH! of a job, took him about 2 months to do, this was obviously not consistant more a weekend thing and he did it all himslef. it is not running 6 throttle bodies.

In my opinion the benifit is great, the car has got heaps of top end power but due to the short runners it loses power down low. The original idea was to twin turbo the rb20 but he ran out of time/money and didn't go ahead with it.

I have owned the car for a bout a year now and haven't had a problem, the only thng is I need more boost to take full benifi of the plenum..

PM me if you want to see some pics of the engine bay.

TTT Grand Master

TTT

Posted
Posted

thanks Tony.

That is what I was getting at.

the picture above is with the engine out of the car so I guess it would be easier.

I also wanted to make a point that on an RB20 or RB25, you would have to have changed a WHOLE host of other parts, and be making HUGE power before the standard plenums become the restriction.

Trust33 Grand Master

Trust33

Posted
Posted
there is nothing wrong with the stock plenum, just it becomes more of a cosmetic change rather than performance. But reducing i/c piping helps!.

So why not run fmic pipes back under the coola past the air filter to the stock plenum?ceramic coat & heat wrap the pipes in the engine bay?wouldnt this be a good enough setup so you get less heat soak due to less piping in the bay as well??/ (i know there are shorter runs to a GTR plenum but theres money to be saved here for other mods especially when you dont know if the change is for looks or performance)but as far as iv heard the stock plenum is reliable for 450hp.Is this true?Tell us whats the power your chasing.Is it for a future engine upgrade?surely a setup like this would run cool enough for those figures.And while ur at it why not get a vented bonnet to keep those temps under controll.... :flamer:

T0nyGTSt Grand Master

T0nyGTSt

Posted
Posted
So why not run fmic pipes back under the coola past the air filter to the stock plenum?ceramic coat & heat wrap the pipes in the engine bay?wouldnt this be a good enough setup so you get less heat soak due to less piping in the bay as well??/ (i know there are shorter runs to a GTR plenum but theres money to be saved here for other mods especially when you dont know if the change is for looks or performance)but as far as iv heard the stock plenum is reliable for 450hp.Is this true?Tell us whats the power your chasing.Is it for a future engine upgrade?surely a setup like this would run cool enough for those figures.And while ur at it why not get a vented bonnet to keep those temps under controll.... :flamer:

Many coolers do run back underneath and not over the top.

ARC and Apex do this.

Heat soak is not really all that important with FMIC as the gas velocity does not allow much heat to transfer.

Oh and I do have both an ARC cooler and vented bonnet :rofl:

I think again HPI and Ben Ellis set the standard with 292rwkW with the standard plenum and he's not the only one.

T.

Dynamix Experienced

Dynamix

Posted
Posted

My car has the stock plenum modified to face forwards instead of going over the motor, al-la gtr plenum, but sits at the stock hight and doesn't get in the way of anything.

I'm not entirely sure if it flows better or is better but it looks good and makes fmic piping a hell of alot easier, it will look even better with a good polish. Hope that helps, but i dont have a scanner to get pics... oh well :rofl:

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