Psycho Warren

iTrader: (5)

Are there any affordable cossie exhaust manifolds????

They all seem reallllllllyyyyyy expensive when compared to tubular manifolds for NA cars and jap crap turbo stuff. eg its quite easy to get decent manifolds for NA cars for sub 500 yet seems to be nearer £1000 for something for a cossie.

Is it really that expensive to make a manifold or is it all cossie tax???

RWD_cossie_wil

iTrader: (9)

Seems to be Cossie tax

mechanic28

iTrader: (5)

not sure why people bother with a tubular one on a cossie

RWD_cossie_wil

iTrader: (9)

looks pretty , really not needed until above late 500/ early 600 Bhp mark according to quite a few top tuners.

What would be interesting is a proper 4" downpipe all the way to the bumper, rarther than the usual 3". Seems to be a lot of gain at higher power levels.

Roosie

iTrader: (8)

like this

Psycho Warren

iTrader: (5)

yes i realise you dont need it until high power levels but thats not the point!!

4" piping cant be that much more expensive than 3" tubing or 2 1/2" tubing used in a lot of NA manifolds.

And development and flow testing costs wont be that much higher on a turbo manifold than a decent NA manifold.

so where is the extra price justification??


Sure i can see those inconel manifolds cost silly money but thats just the material/production cost.

A turbo manifold doesnt NEED to be made out of that surely??

RWD_cossie_wil

iTrader: (9)

Nice Roosie whos made that for you?

Roosie

iTrader: (8)

i-tuned in watton

-beefy-

iTrader: (6)

fuck me roosie , i bet that aint quiet lol ,


beef

whosyadaddy

agreed would love to see/ hear that, get a vid up buddy

Roosie

iTrader: (8)

its the opposite its very quiet havent had it on full chat but on idle upto 4k it is.

zetaboostboy522bhp

hi mate , ive made a few zetec turbo manifolds before (over the gearbox type) and here are a few of the cost involved in a cossie tubular manifold

laser cut flange in stainless 10mm thick £50
laser cut turbo flange any size 13mm thick £20
mandrel bends x8 for a cosssie manifold £100
external wastegate pipes £30
and then the big part the collector ,
if your using a pot design then £30
if your going to use a proper race 4-1 merge collector then £220
if your going to make the 4 headers meet and then weld to make a formed collector then its labour £100
tig welding and back purging £100+ depending on how many welds
and then remember to add full labour to the job i always say if it cost £200 in parts then expect £200 in labour

so thats £430 for the cheapest
and £650 for the most expensive all prices in 304 stainless

and thats without labour cost, the problem with all these japan shit is the welds and the metals are of poor quality simple as that and these in time will cause you major issues so i think around about £700 is a fare price in 304 and £1000+ in 321 stainless

hope this helps mate and let us know if you need any help

cheers paul

Psycho Warren

iTrader: (5)

still a lot less than a lot of the cossie manifolds!!!! cossie tax???

Charlie Chalk

iTrader: (1)

Demand, thats why they aint cheap. How many Cosworth YB tubular manifolds sell compared to jap stuff?

tabetha

It's only a rip off price because people will/do pay it.
There doesn't need to be any flow testing at all, just piping to suit, going to be nigh on impossible to get equal lengths within the confines anyway.
When I was doing the keyboard as we got Rossies car running it was VERY quiet, but sounding nice, the guy makes good exhausts, but nothing else, we had 4(major) leaks from the new fuel system, maybe the reason they "pro" guy wanted roosie to sign a disclaimer about any fuel leaks before he left with his car.
Add to that compression struts that has bolts through holes, and NOT into captive nuts, ie pull the bolt and it fell out, did this as it was jacked up, loads of other dangerous bits too.
Roosie is going the whole hog now with track car.
The car was fuelling and sounding perfect, it was on my map as a base, but seriously overfuelling to the point of not starting, the spec is totally different to mine, but ok to start with, I had to knock around 2/3 the fuel away, so he's got some biggie injectors!!
tabetha

Cragrat

iTrader: (4)

now i like that

Jasesapphy

iTrader: (1)

is it important to have equalish length headers

m4tt274

iTrader: (2)

the N/A manifolds arents cheaper just the pinto/crossflow tubulars are cheap. but that becuase theyve been making them for years. but still most are only £500 not £1000. i think its because with the cossy's u have to change everything if you want 500+ horse. whereas most of the jap stuf u just bolt a t71 on and it takes it. also the cossy owners often buy expensive things.
on the rx7's a tuner told me not to put a s/s tubular manifold on and stick with a cast, because the tubular would heat up and glow red. then the weight of the turbo would bend it down and it would touch the fire wall.

m4tt274

iTrader: (2)

the subarus has uneven length headers. its why the sound so distinct. u can buy even length headers buy the subaru tuner i was talking to didnt think i needed them until sorta 450bhp ish. so the length cant matter that much.

Charlie Chalk

iTrader: (1)

Didn't think it mattered so much on turbo application?

philbert

I would say the 2wd maifold is the best option, 618@7500 on my engine it flows better than you think and is far cheaper.

stu21t

you dont need equal length as such, more equal volume.
take the subarus as mentioned above.
i dont know for sure but i would imagine the longer pipes had a smaller diameter so held the same volume as the shorter but fatter pipes.
that way its kept more even.

Psycho Warren

iTrader: (5)

this is what i mean

You look on something like an area 6 zetec turbo manifold and he has put shit loads of time and effort into getting it to flow right yet still cheaper than a lot of cossies stuff. Seems strange lol

kjc300

iTrader: (1)

Just got a 2wd one for mine, but jesus it weighs some!!


It's cossie tax, but also the volume - not a great deal of stuff around for cossies - hundreds of bits and bobs for jap stuff so can be made cheaper.

Rod-Tarry

Mine was 3.5k & there is nothing that will work as well for less. Ive done the cracking stainless shite, it aint worth it. You get what you pay for as with everything in life.