182 exhaust question

[rory182]

OK so the 182 has a 4-2-1 manifold. would it be possible to have just a 4 - 2 and then two single seperate pipes to two single seperate tail pipes which from the back would look normal.

I only ask as, as far as I can think it'd be free-er (new word for Saturday night) flowing to have this than having a single pipe then split into two at the very end?

I'm no gas flow expert though, any thoughts?

 

[msa197]

Don't mind the extra weight then.

best to speak to prospeed or H&S, IMO.

Could try and have a side exit. LOL

 

[rory182]

hardly extra weight really.

just seems sensible having 2 straight pipes (with silencers where req'd) as opposed to one pipe which has to be bent to mate with the 2 branches of the manifold.

I guess the cat would be the problem if you kept it, don't want 2 cats! lol

 

[fmp_]

i doubt there is enough room under the car. and seems pretty pointless.

 

[rory182]

it's a hypothetical question, the whole point in custom exhausts is for better gas flow surely?

So, IF it's better, why is it pointless?

one for BenR or similar to answer.

 

[Trueblue]

the 182 manifold is perfect.. i would leave it as it is!!

 

[tidyclio]

it would take major work to get it straigh from the manifold without it merging into one pipe.
your biggest problem would be that you would have to get a custom built manifold and that'd have to be tested for flow etc but the main problem is the flange at the end of the manifold where it goes into one is used to help get the exhaust gases out your engine.it's called pulse tuning where as the gases leave one cylinder some of them hit this flange and go back up towards the cylinder in effect sucking out more gases(it's hard to explain as theirs a lot to it).
really it's not worth it as the gains from having two pipes as opposed to one well matched pipe would be small if any,its good to have it free flowing but you do still need some amoutn of back pressure

 

[rmccardal]

It's good, but it is far from perfect.

the 182 manifold is perfect.. i would leave it as it is!!

 

[Trueblue]

It's good, but it is far from perfect.

i would agree with that, it's even that good all these 172 owners want one too

 

[rory182]

it would take major work to get it straigh from the manifold without it merging into one pipe.
your biggest problem would be that you would have to get a custom built manifold and that'd have to be tested for flow etc but the main problem is the flange at the end of the manifold where it goes into one is used to help get the exhaust gases out your engine.it's called pulse tuning where as the gases leave one cylinder some of them hit this flange and go back up towards the cylinder in effect sucking out more gases(it's hard to explain as theirs a lot to it).
really it's not worth it as the gains from having two pipes as opposed to one well matched pipe would be small if any,its good to have it free flowing but you do still need some amoutn of back pressure

ahhh ok I get you, I know that the back pressure in 2 strokes for example is used to return un-burnt fuel to the engine. cheers

 

[Fred@BTM]

1 pipe per cylinder, straight out the bonnet, that would be cool!

 

[rory182]

lol Fred, u taking the piss outta my question?

 

[Fred@BTM]

na, just my strange sense of humor!

i get what you're saying, but an awesome manifold back system is unbeatable on a 182

 

[tidyclio]

1 pipe per cylinder, straight out the bonnet, that would be cool!

that would be quite cool would sound mean lol dragster style

 

[Ed_182]

na, just my strange sense of humor!

i get what you're saying, but an awesome manifold back system is unbeatable on a 182

is that a sales pitch for your system lol

 

[Fred@BTM]

nope an open comment if you will

awesome manifold back exhaust

so far i only know of 2

 

[rmccardal]

the one shed are having made .... and ?

nope an open comment if you will

awesome manifold back exhaust

so far i only know of 2

 

[fmp_]

did someone say... shed... and awesome manifold back system...????

 

[Fred@BTM]

BBtunning's is good - very nice build quality too
shed's is nice (i don't like the pipe work where it splits, and the silencers are too big for my liking, but nice welding)
Angelworks - will be good, but i doubt we'll see it this century
Ours i know is good (and the loudest!)

funnily enough, they're all bespoke/made to order exhausts

 

[rmccardal]

ah ok, loud is one thing, sounding good is another. The best sounding exhaust I have heard is on Bens valver (Jess) which is probably helped by the bike can it has at the rear.

The AWT one was held up by silly americans not dispatching a complete order, rest of the kit is on the way now though.
As soon as that arrives (this week I hope) we'll be going up to have the first one put together on my car.

It's been a while in the making, but I think it's going to be pretty damn good.

BBtunning's is good - very nice build quality too
shed's is nice (i don't like the pipe work where it splits, and the silencers are too big for my liking, but nice welding)
Angelworks - will be good, but i doubt we'll see it this century
Ours i know is good (and the loudest!)

funnily enough, they're all bespoke/made to order exhausts

 

[Fred@BTM]

give me a shout if you need help welding it together

 

[BenR]

i smell sabotage!!!!!!!!

With the cost of an orbisoud from K-tec, the AWT system isnt seeming that expensive anymore, especially since i dont rate the orbisoud road system at all.

In regards to splitting the manifold into 4-2 then 2 systems per say, no point, you wasting the efficiency gain you can have by correcty timing the scavending effects of pre-arranged firering order grouping.

 

[Fred@BTM]

^yeah, what he said^ (i hate know it alls!)



wwww.adultfriend******.com

 

[Joe@ShedMotorsport]

shed's is nice (i don't like the pipe work where it splits, and the silencers are too big for my liking, but nice welding)

Struggling to see whats not to like about this>>>

The rear boxes are shorter and 5kg lighter than the std boxes

 

[fmp_]

its the fear of a superior product!

 

[Dootchy]

I've a custom made stainless system where the downpipe is modded & attatched to straight through + one box & twin 3.5"s at the rear. It retains both sensors & has a replaceable section for the cat to slot back in. Sounds fckin immense & good gains- that plus custom intake & mesh filter got me comfortably faster than my Megane 225 Trophy Co. Car, and loud enough to be threatened with divorce on any mway journey!! haha! If anyone wants to buy it on these grounds, I'm thinking of selling for a decent price.