Intercooler piping location

[Yakuza]

What do you guys think would be better, to do it like the GTR style, as in cross at the back of the radiator or do it like the standard style ?

*talking about the RB25det*

would appreciate the feedback ! thanks !

[T0nyGTSt]

You ask an interesting question there.

You can either have it curve up over the radiator and square off over the cam covers or cross over underneath and have two pipes go back over.

The "over" way makes general head maintenance even worse but it makes upg. to a front plenum easy.

The "under" way makes a front plenum hard.

T.

[Yakuza]

what about the heat issue ? would it be hot if i go the "over" way ?

[JimX]

My intake piping near the throttle body/engine/radiator was a shitload hotter in the factory location, when compared to the new piping in the front-facing location which doesn't really go near any of those aforementioned things.

I've been told by a few people that the air moves too quickly for heat soak to be an issue, but i dunno, the old piping method is so long that it has to have at least some measurable effect.

Edit: my old intercooler was still front mount, so the piping near the radiator (under) wasn't "factory" as such, but the rest of it was fairly stock standard.

[benm]

The less clutter their is in an engine bay the better I say. I've got the piping going underneath and although the piping is alittle longer it leaves much more room for other things like oil coolers etc etc.

Not only thing but almost every engine bay i've seen with the 'behind the radiator' has had issues with bonnets or repairs or removing/replacing parts etc.

[Steve]

I dont think it would make a huge difference from a performance point of view, apart from pipework being a bit longer if you go with the stock location, but I had a couple of other considerations that I used in the choice, they were:

I was planning on swapping to a front facing plenum

I wanted the hole that is freed up in the front of the engine bay to be used for a CAI

For the size of cooler I wanted, it was difficult to find one with an end tank design suited to using the stock pipe locations.

[Sydneykid]

Hi T0nyGTSt, there is 3rd way, by having a 120 degree bend at the throttle body. Saves about 800 mm of pipework and no need for it to run behind the radiator.

I'll dig up and post some pictures of the Gibson R31 and an R33 that had the same system.

[T0nyGTSt]

In the interests of further education, I present this pic:

http://www.nitroware.net/~tony/r32_120d.jpg

I must admit is it not too common as I've never seen one in the flesh so to speak.

T.

[strutto]

I have had a fair bit to do with an RB25DET with the 120 degree setup. Made 251rwkw with stock injectors and internals. Happens to be a green Silvia in the latest issue of Zoom (No. 69...)

Seemed to work fairly well. The 120 degree bend did get condensation on cold nights with high boost so I assume there is a noticable pressure drop around this area.

IMHO...

[JimX]

Originally posted by T0nyGTSt

In the interests of further education, I present this pic:

http://www.nitroware.net/~tony/r32_120d.jpg

I must admit is it not too common as I've never seen one in the flesh so to speak.

T.

Probably because it's so fugly

[Skyrine-Dave]

Originally posted by JimX

Probably because it's so fugly

Well do you want the benefits of shorter pipe work?

or

Do you want neat and tidy wank appeal ?

why does no one consider running the pipes in opposite directions if you want to keep the 'in between raditor/engine' tidy apporach? as in come out of turbo, behind raditor, thru intercooler, up thru stock postition, then into cross over pipe....

[JimX]

Originally posted by Skyrine-Dave

Well do you want the benefits of shorter pipe work?

I already have them, and shorter than that. Sorry if your car is done like that and I offended you, I didn't mean to. It's just my opinion, and probably a lot of others or I'm sure we'd see more of it around. Ok it's not fugly, just seems a bit "untidy" to me. But each to my own, I'm not going to bag it out! I was kidding earlier. There are much fuglier engine bays than that one

[TTT]

That pic is BOOSTMIESTER's old car.

If I remember correctly, he had well over 200rwkw from the RB20.

[Yakuza]

i like this kind of piping

[T0nyGTSt]

That's the standard sort of IC install like the Trust V-SPL kits.

T.

[dan_the_man]

Here's a pic of my setup

I wrapped the pipe in heat tape to stop it from heating up from engine bay heat

http://www.skylinesaustralia.com/forums/at...=&postid=511918

[warrick]

yeah why dont more people run the piping the way Skyrine-Dave said?that way you at least have the intercoolled air exposed to the heat of the engine bay for the least amount of time,except if you have a front facing plenum.my sons r33 gtst is done this way & doesn't seem to have any probs.

cheers

warrick

[Skyrine-Dave]

JimX - no offence at all, i dont htink its the nicest looking approach.

And yeh i would like to hear comments about the reverse piping method... like for and against...