throttling exhaust pipe

[luigigtc]

guys I have a question that from time intrigues me, many of my friends have made the following change, in the final part of the barrel end (the final part where then comes out of the smoke) have executed the following things, mountain 50mm tubes and the final part had to be removed piece by 50mm and did weld a piece of smaller diameter if I'm not mistaken-or 40-0 45mm, with the effect of the strong whiff of each accelerated type of an air compressor and performance a p? torque under why? increases the back-pressure, but this what the f? well to the turbine or engine? or create the damage in the long run, thanks a lot

[msport (exil77grande)]

according to me as the performance does not change anything and therefore no damage etc,for me it's just a way to make a little noise.

[franco75]

to me it seems silly, just in case I would do the opposite

[legendaryslave]

I do a download sports and are tied to a firm that does only this to work, never heard or seen that the door of the benefits

[Danny]

But on that engine then? Diesel or petrol? Cmq benefits, I don't think...Boo you! :)

[demolitionMan]

guys I have a question that from time intrigues me, many of my friends have made the following change, in the final part of the barrel end (the final part where then comes out of the smoke) have executed the following things, mountain 50mm tubes and the final part had to be removed piece by 50mm and did weld a piece of smaller diameter if I'm not mistaken-or 40-0 45mm, with the effect of the strong whiff of each accelerated type of an air compressor and performance a p? torque under why? increases the back-pressure, but this what the f? well to the turbine or engine? or create the damage in the long run, thanks a lot

[luigigtc]

I understand vah and only to make a p? of noise but in terms of performance they are just crap thrown to the wind...

[demolitionMan]

I understand vah and only to make a p? of noise but in terms of performance they are just crap thrown to the wind...

[luigigtc]

:D obviously, the reduction meant I was up to 1 inch compared to original diameter

[angelolsp]

the couple, at most by only the impression would have when you hear the whistle of pi? the machine...

[MultiBravo]

And' turbo the car or sucked?

[angelolsp]

we talked about both diesel car ke of gas I assume that the diesels were all turbo x this whistle ...

[luigigtc]

if we take the case, in fact, the whistle ? strong turbo diesel engines only when the turbine ? at full speed, then the engine torque, at low rpm, in fact, the whistle and very limited

[angelolsp]

It seems to me Normal

[mikyrace82]

ahahaha, the classical washer that saldavamo from the guys in the "wheelbarrows" aspire to emulate the one turbo....good memories..

however, it works on all cars both diesel and petrol, aspirated or turbo...***** and performance do not serve to anything...

[franco75]

in the jeep is so mounted in the outlet tube whistle

[ion]

In theory, "choking" the exhaust reduces the noise and take more? a pair of low, losing to the high.
In practice, in fact it always does the opposite, trying (and almost never succeeding) to "open" the exhaust.
The noise of "breath" pu? be due to exhaust gases that finding a reduced section and rise of pressure (Venturi effect) then speed?, producing a hissing sound. If for? it produces a "bottleneck" in the end you lose rpestazioni, with effect "cap".
In practice it ? a silly, almost like the pop-off for the diesel...
;)

[angelolsp]

they are not just in the agreement, especially in the diesel if you do an exhaust that is too large, the machine is much more dead one scaricco smaller, but as you've already told you, it takes more oppia the diesel are beautiful x with the pair immediately...

[ion]

they are not just in the agreement, especially in the diesel if you do an exhaust that is too large, the machine is much more dead one scaricco smaller, but as you've already told you, it takes more oppia the diesel are beautiful x with the pair immediately...
Do not you agree with what ? You read well what I wrote above ?
In practice, in fact it always does the opposite, trying (and almost never succeeding) to "open" the exhaust.
It seems to me that to say the same as well I...
:o

[angelolsp]

you said ke and stupid strozzarlo...su this are not entirely agree..

[ion]

you said ke and stupid strozzarlo...su this are not entirely agree..
Got it !
Anyway, it takes the right section or reducing it too much gas to increase speed? but up to a certain point, after that they are not able pi? to drain properly, creating a "wall" in addition tot laps.
The study of an exhaust if you want it to do WELL ? a serious and very difficult, in all engines with performance medium-high (I exclude the lawn mower and then...)
Reduce the section, or to enlarge it without any other changes can? lead to benefits in certain regimes and losses in others, it is a "covered short".
Of course, there are sometimes the margins of the project on which to play but ? to assess on a case-by-case basis.
In principle, then I advise you NOT to touch the exhaust line if you do not know what you are doing.
Typically I could also on the diesel you try to have more? power higher revs (torque at low usually have too much) and we are looking for changes in this sense, then, de gustibus !
:D

[angelolsp]

certainly useless to narrow it too much I agree ke you need to do right studying and testing to find the best condition and normal ke six one acts on the bottom loses on the top and always ccosi you can not have it all...for the top, you will make other changes, for example,

[savek]

but what kind of change

[mikyrace82]

consists in reducing the diameter of a section of the exhaust to create a turbulence...by doing so the fumes hitting this bottleneck, causing a sound pi? "racing" type turbo, high-pressure...If ? a light thing does not affect the performance but if you throttle too much you will lose performance, especially to the high, and rising the temperature of the engine....in a few words na tamarrata...