3.5 or 4in downpipe on a RHD FC?

najiru · July 10, 2010, 09:24:02 AM

In answer to the original question I have a 4" pipe from the turbo all the way back so it can be fitted. Engine is a 13B-RE running a T78 which made 530fwhp at 1bar.

najiru · July 10, 2010, 09:26:23 AM

Only bay pic I have to hand:

Grant Monkhouse · July 10, 2010, 09:58:40 AM

If najiru has it done then it is possible, only thing I can think of would to be alter the manifold to bring the turbo further forward to get the clearence?

StavFC · July 10, 2010, 10:17:58 AM

Najiro- 4in! Good stuff!
To be honest it looks like your turbo is in the same position as mine, almost identical, so that bodes well.
Depending on what I do and what I use from the various things I have, I might have to modify the manifold for T6 fitment anyhow, but yours shows its possible, and thats all I need to know

Dont suppose you have any pics that show the downpipe area at the back of the bay clearer do you?

najiru · July 10, 2010, 11:50:46 AM

Just been out and taken some but not easy to show clearly, tried to show the route best I could it only just fits through lol. HTH

StavFC · July 10, 2010, 12:26:35 PM

Superb, thats a great help, thanks a lot!

Looks like your wastegate position is very similar to mine too (mines an ERC tubular manifold allegedly, but bet ERC bought it from HKS or someone, lol) so that gives me good hope.

Your DP sits futher away from the inlet, but that may be as the FD manifold doesnt stick as far out, but TBH that seemed the least of my worries

Thanks again

antnicuk · July 10, 2010, 01:14:38 PM

its an RE manifold

T6 flange is definately excessive, we run a T6 on the 20b and its massive, if you are still gonna use it for drifting then you will struggle with lag with any T6 footprint.

it sounds like you want big power, if so i would go for an RE Engine if i were you.

L18M · July 10, 2010, 01:25:40 PM

naj: is that jons (888gtr?) old fc? else looks similar

if its not then i think jon had a 4" system on his time attack fc.
shame he\'s no on here any more but if you search then you should be able to find his build thread on here. else he\'s on fduk but im sure a few ppl on here would know about it.

najiru · July 10, 2010, 01:41:11 PM

It is indeed Liam, he now has my old fd

L18M · July 10, 2010, 04:23:45 PM

Quote from: najiru;703718It is indeed Liam, he now has my old fd

one of my fav fc\'s!!

najiru · July 10, 2010, 04:52:04 PM

Haha, cool thanks, though all credit to john of course

Going to pick up where he left off and improve a few bits further though there really isn\'t so much needs doing.

StavFC · July 10, 2010, 07:50:29 PM

Quote from: antnicuk;703716T6 flange is definately excessive, we run a T6 on the 20b and its massive, if you are still gonna use it for drifting then you will struggle with lag with any T6 footprint.

it sounds like you want big power, if so i would go for an RE Engine if i were you.

Seen the turbo I have have 1bar by under 4k on 13Bs, my cars got fook all worth worrying about till about 5k anyhow, no im not fussed.
Manifold flange is only a tiny bit of the equasion.
Not sure what route ill go anyhow, got loads of options kicking round here. As im lazy I prob wont use it anyhow just due to the extra fab work.

And my engine I have would be no restriction even at 500bhp+ so im not going for any other engine.

Regardless, this was purely about fitting a certain exhaust diameter in an FC bay, I really dont want any tuning advice. Unless you know much about diesel fuelling? Ive done a few things to my daily earlier, but im not sure what screws you turn to adjust the fueling...

antnicuk · July 10, 2010, 10:36:57 PM

fine by me, no tuning advice given then .......................

skybusr34 · July 11, 2010, 09:16:43 PM

Quote from: StavFC;703755Seen the turbo I have have 1bar by under 4k on 13Bs, my cars got fook all worth worrying about till about 5k anyhow, no im not fussed.
Manifold flange is only a tiny bit of the equasion.
Not sure what route ill go anyhow, got loads of options kicking round here. As im lazy I prob wont use it anyhow just due to the extra fab work.

And my engine I have would be no restriction even at 500bhp+ so im not going for any other engine.

Regardless, this was purely about fitting a certain exhaust diameter in an FC bay, I really dont want any tuning advice. Unless you know much about diesel fuelling? Ive done a few things to my daily earlier, but im not sure what screws you turn to adjust the fueling...

you really are a door handle . you ask people on forum for info and advise. the good and very knowledable people offer there far superiour knowledge of EVERYTHING rotary related than you. and all you have the ability of doing is shunning them. i`ve not yet seen in any of your posts where you actually admit your wrong. i wish there was a block button so you didnt show up from my computer because you really pi$S me off. go back to chavy corsa`a. where you might have a bit of knowlege. ....

skybusr34 · July 11, 2010, 09:21:07 PM

Quote from: antnicuk;703782fine by me, no tuning advice given then .......................

seriously mate. this bloke is a tool. dont waste your key board life typing giving him advise because he`s one of them people thats always been there and done it quicker...

WHY ASK FOR ADVISE THEN SLATE IT.. K n 0 &