Rotating the inlet manifold
 

Does rotating the inlet manifold make any difference to performance or is it really just looks better and make the bay look a little more tidy?

less pipework, less lag.

Less pipework and to some looks better:cool:,but I don't really subscribe to the less lag....I have run both ways and turbo spool up is about the same meaning you would not notice any difference at all really.SJ.

Cooler intake in theory due to the path of the pipes

SJ has it correct all for looks, nothing much to be gained performance or spool wise

Think the real advantage is actually in packaging, rather than performance. Rotating the throttle body frees up a hell of a lot of space that would've been filled with pipe work.

It does make more space in the bay mate:), but that does not answer the OP question,which was "does it give more power"and to answer that question simply "it does not!"I have it done on my car strictly for cosmetic purposes and engine bay layout,because I had plans for fitting different components and making it easier to free up more room in my engine bay for fuel swirl pot,catch can etc etc etc...SJ.

Stop teasing and post a picture up, I'm a sucker for a rotated inlet :thumb:

https://cimg1.ibsrv.net/gimg/www.sco...4fccf90d4f.jpg

My work in progress

As you asked so nicely;)

https://cimg7.ibsrv.net/gimg/www.sco...ca9bccae34.jpg
.SJ.

:notworthy

That is Subaru Porn!!!!

Thank you SJ, just looks so good :thumb:. Did you do the rotation work yourself?

I've considered this for a while, so I searched through images on Google for some inspiration for the pipework routing and it seems some have managed to leave the alternator and aircon in position.

Anyone have any ideas as to how they've done it?

I was thinking set the alternator as low as possible and find a suitable belt, then use manifold spacers?
Or would there still not be enough room?

I will only do it if I can keep the aircon.

I'm not fussed about ditching the air-conditioning and have seen a kit for reversing the alternator bracket. Would be great to know what else is involved.

Thanks mate:thumb:I had it done by my enginebuilder.Once you rotate the inlet it comes down to measuring and re-measuring fit and refit until you get the positioning of the pipework and other ancillaries perfect,If you have the time and patients you can get it fitted how you like as long as you work out where every other part is going to fit first without fouling and still function properly,that's why I said you have to know exactly why you want to rotate the inlet manifold as you are going to get zero performance gains from doing it,but it does clean up the look and free up space in the engine bay.SJ.

Coming along well their mate:thumb:Good choice on the inlet;).SJ.

Cheers. It is only for the looks, so much neater and makes some space for catch can, fuel reg gauge mounting etc. The HDÌ fmic pipework run is fugly so would sort that too. Now, any tips on finding some spare time.......

Lol:lol1: I'm afraid I can't help you with that one...If you are going to rotate the inlet for looks and space then go for it buddy:thumb:let us know how you get on with it:).....SJ.

Agree purely for looks, no gains to be had otherwise I would have done it, but for the work involved just for looks, I wasn't bothered.
Plus I think I'd have to use another inlet manifold as my icv will foul the bonnet on the v5 inlet so haven't bothered.
Does look boss though coupled with a rotated turbo, it's the standard procedure look.

It's possible to keep the AC too, it's just more work

So is it the same manifold just turned 180?

Adrian is your FMIC pipework 2.5 inch?

Don't think it's quite that simple, it is a Subaru after all :cry:

AWG from the pictures above those manifolds are the cosworth items not the oem items if you are going to use an oem item the best one to go for is the spec-c one piece if you can find one thats whats on mine flipped round.
Attachment 26359

Attachment 26360

What gussy said Andy:thumb:.SJ.

Gussy, that looks like a serious engine bay :thumb:

It is that simple in it's basic form.

Only on Phase 2 heads though, Gus. ;) Same as the Cosworth manifold.

Looks pretty awesome gussy. It was more out of interest, I'm unlikely to do anything to mine!

done using a 2 piece newage inlet

Attachment 26338

Cosworth setup

Attachment 26339