Jump to content
SAU Community

Stagea Exhausts

FLYSLY

By FLYSLY,
in Four Door Family & Wagoneers

 Share

Recommended Posts

beastien Proficient

beastien

Posted
Posted (edited)

It's only happened since Bosimporting changed manufacturers for their SS split front/dump pipes, basically instead of having an open mouth and a splitter, on the dump pipe flange, they've changed it to a pipe that actually fits inside the exhaust outlet on the turbo (to achieve a good seal).

As most of you know the highflowed turbo has a much larger exhaust outlet, so the pipe on the dump pipe flange is way too small now.

What I had to do was, take my split front/dump and get the pipe removed and the hole enlarged for the exhaust outlet, and have a splitter welded in.

Heres some pics that will help explain it.

The original style, with open mouth and splitter (will suit highflow)

post-17348-1150439647.jpg

And the new style (which i think is only with the SS one) Give Michael @ BOS a call and he'll confirm it,

they may be doing them all like this now, i don't know.

post-17348-1150439913.jpg

Edited by beastien
  • Replies 67
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Posted Images

Sydneykid Grand Master

Sydneykid

Posted
Posted
Could you please explain? i've just gotten myself a hi-flo, and i thought they used the exact same turbo housing as the standard turbo. why would this mean any standard dump pipe wouldn't work? i've got a custom mild steel dump, nothing flash but i just don't want to have to fork out for mods to my exhaust if this turbo is different

The current trend in split dumps is to extend the turbine pipe past the flange and inside the turbine cover. It fits neatly/tightly inside the turbine cover. This stops any chance of wastegate exhaust contaminating the flow (causing turbulence) from the turbine. The more common style has a little bridge that is welded to the dump pipe flange and stops 99% of the cross contamination. The pipe extension is a better system, it stops 100%.

The problem with the pipe extension style of dump is when you get the turbo high flowed they machine out the turbine cover and the extension pipe is then too small to fit tightly/neatly into the larger hole.

So if you are intending to get a high flow later on you need to order the more common style with the bridge that fits both standard and high flow turbine covers.

:rofl: cheers :)

Silverback Community Regular

Silverback

Posted
Posted

I have just ordered a SS split dump with the pipe extension. I do not intend to hi-flow the turb so am happy with it as is. However, is there any reason in the future why the pipe could not be shortened from its current length, or modified to suit?

ahh, i get it. no worries on my end then, i don't have that flange. old school!
beastien Proficient

beastien

Posted
Posted
However, is there any reason in the future why the pipe could not be shortened from its current length, or modified to suit?

It can be modified, this is what i had to get done, the pipe can just be shortened, but the hole has to be enlarged to suit the larger exhaust housing outlet on the turbo, and a splitter welded in to separate the wastgate gasses.

It was basically a big hassle for me, had to take the pipe to get modified, took a couple of days, cost $150, and was far from a straight swap over, which installing a highflow normally is.

Tangles Grand Master

Tangles

Posted
Posted
Just my angle, I don't think you would go from what you have to a split now Brendan but maybe from standard this is a better option?

Luke

For sure; always comes down to budget & cash at hand, tho.

So, if you've got $500 to grab a split dump system then sure do it.... when I did my first bout of tuning it was all about being on a tight budget at the time, and still is.

I can sell my dump pipe at anytime and uprade, but really at this stage of the cars tune (160akw) its a hole and flows thru exhaust gasses pretty damn well for its price.

Just waiting until the time is right. :(

beastien Proficient

beastien

Posted
Posted
ok, this infromation is great thanks for the responses, but the turbo that is on my car is at GCG GT30, will i still have to modify the dump?

If you can get the pipe with an open mouth and splitter (like the first of the pictures i posted) it'll fit no worries.

Talk to michael at BOS Importing, tell him what turbo you have, and i'm sure he will sort it out for you.

EGA41T Mentor

EGA41T

Posted
Posted

well i just picked up my exhaust from Unique AutoSports in castle hill,

i got the catco metal inside cat, and a mild steel split dump pipe, with ceramic coating.

I spoke to John at UAS, he is very helpful and knows his stuff.

anyways, here are some pics

06-06-19_19-02.jpg

06-06-19_19-04.jpg

06-06-19_19-03.jpg

FLYSLY Mentor

FLYSLY

Posted
  • Author
Posted (edited)

EGA when you get the dump and cat fitted can you please let us know whether it is a noticeable power upgrade?

How did the front mount feel once fitted over the side mount?

Also is the dump that you bought suit Hi Flow Turbo`s?

Edited by FLYSLY
EGA41T Mentor

EGA41T

Posted
Posted
Hey Ega, dump pipes are like people, they dont breath too well with plastic bags over their heads. :D .....hah ha :huh:

I know, it's late and I'm tired...

lol, i'll try to remember to take it off when i get it installed Darrin.

EGA when you get the dump and cat fitted can you please let us know whether it is a noticeable power upgrade?

How did the front mount feel once fitted over the side mount?

Also is the dump that you bought suit Hi Flow Turbo`s?

yeah no worries. i'll post it up once i get it done

front mount made a slight difference but at the stage im at with mods, it is mostly a cosmetic upgrade, if i was making more power then im sure it would make more of a difference.

will suit high flow fine

sweet well i got a pm from batmbl today and he said that there will be a group buy on stainless dump/front to suit r33 and 32 stags etc... soon so will be purchasing one then

the stainless steel one from BATMBL is not suitable for a high flow.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      Thats the current state of the reo. Bit ew, but GTR Reo and supporting bars are $2000, and 2nd hand GTT ones are $1000... More engine disassembly. The good news is   Various LS weird sounds are apparently normal Everything coming out is in perfect condition The bad news is: Everything coming out is in perfect condition It looks like whoever assembled this engine ~25,000km ago was telling the truth with what's in it and how they did it. Even things I was unsure of like the timing chain - But it's a brand new double row timing chain, spaced perfectly. They even cut up the stock windage tray to keep it instead of being lazy and to work with the baffle. Cam, Heads, springs, LS7 lifters, Pushrods - All look new and have obviously been working perfectly. In other news, we removed the pineapples that were loaded below the superpro subframe bushes. They look a fair bit munted and have deformed the poly bushes that are 'above' them. I'm telling myself that now that there's space 'under' the bush between the little cup that bolts in... that having a pineapple wedged there was bad and basically made the rear end solid. The pineapple and the superpro bush are ... equally deformed (i.e they have deformed one another from being smashed together). We'll see how it goes with bushes only. I am sure this cope will fail and the answer will be to drop the subframe and put nismo rubber bushes in there instead. $400 worth of gaskets and ARP head bolts to replace perfectly new looking gaskets that absolutely weren't leaking  and were installed perfectly with great care - because god damnit.    
    • r32-25t
      R32 GTR - Where to begin

      By r32-25t · Posted

      Why bother? Keep them under 1bar and be happy, I had it for 10 years and never had an issue. once you go beyond that the budget blows out fast and then keeps on blowing out 
    • joshuaho96
      R32 GTR - Where to begin

      By joshuaho96 · Posted

      I'd still recommend rebuilding the turbos too. That will eat up a lot of the budget especially if you aren't willing to put in the labor to R&R the turbos yourself but it's a huge risk to ignore it at this point.
    • Murray_Calavera
      R32 GTR - Where to begin

      By Murray_Calavera · Posted

      Can't help it, its an illness. 
    • MBS206
      First/Second Post

      By MBS206 · Posted

      Yep, agree with all of the above added on too. I just love the age old "what boost were you running?" Question without getting any other surrounding data. IE, may have ran 20psi, and lived for 12 years, but it was an 80 year old granma driving it to Bingo once a week and never took it over 2500rpm.
×
×
  • Create New...