View The Full Version : Discharge to the roar of a diesel engine
rebirthafterrevenge
20-08-2013, 13:37
Hello guys today I saw a alfa gt that had 4 exhausts that roared by fear! I thought it was a gasoline 3.2 cc . but then as I went to stand behind the car to see if it was a petrol , I have seen that acceleration was a black smoke from fear! IT WAS A DIESEL, DAMN :). 1.9 jtdm , .
the diesel makes a lot of noise from sbruffo and cash emptied .. are not full-bodied as the petrol! as you can? build an exhaust that makes a noise type petrol engine? .
the drain of the gt was completely hand-crafted with chrome end Pilot..
I also want that diamond! ;)
angelolsp
20-08-2013, 16:41
I saw leon ke seem to gasoline really....l artisan is always a show..!!!
mikyrace82
21-08-2013, 01:22
to have a nice rumble on the diesel you have to have the entire pipe to direct exhaust and just a muffler ******...basically you'd need to see the light on the other hand...if you mount the mufflers with the bulkheads on the inside we do not feel a thing...
rebirthafterrevenge
21-08-2013, 08:08
to have a nice rumble on the diesel you have to have the entire pipe to direct exhaust and just a muffler ******...basically you'd need to see the light on the other hand...if you mount the mufflers with the bulkheads on the inside we do not feel a thing...
a friend of mine to a 147 has removed everything and put a tube straight up to the back! the result that only blows and roars a little!
Ok, but... even on a turbo engine are not leave absolutely in accordance with plan lengths of the manifolds, diameters, conicit? and a careful calculation of the back pressure also and above all in function of the type of muffler that will go? to use. An account ? make a lot of noise, and them it takes just an account ? do less but give the engine what needs to be fixed!!
M999
mikyrace82
22-08-2013, 00:38
yes, but here we seek only the roar...
yes, but here we seek only the roar...
Me: nothing... what are you doing then, if at the end makes it less of a drain to the original? Make noise, and just that, for the purposes of the performance, what is it? At this point, it is better to optimize the exhaust system, even with a group-approved, but that you pull yourself out of a few horses, maybe without emptying the power delivery at low/medium revs. With a mapping you can? put a rag, but up to a certain point, and, honestly, I would prefer to optimize everything, starting from a valid base to give me something more? concrete, otherwise not even you perdeei resources and time... for me at least I see it so? ;-)
M999
nasone147
22-08-2013, 13:50
God forbid... in my area of "game" (the bike) even I only change the muffler first if you do not take action on the suspension to optimize the chassis to be able to ride the bike for as it should... and this says a lot about my personal thought of tuning: or have a global advantage, and the concrete or, better, leave it all cos? how ?.
Then - much to return to the full in a topic - change the exhaust system? And all the rest of the contour do not optimize?
I emphasize the word "personal thought".
M999
mikyrace82
22-08-2013, 14:51
Me: nothing... what are you doing then, if at the end makes it less of a drain to the original? Make noise, and just that, for the purposes of the performance, what is it? At this point, it is better to optimize the exhaust system, even with a group-approved, but that you pull yourself out of a few horses, maybe without emptying the power delivery at low/medium revs. With a mapping you can? put a rag, but up to a certain point, and, honestly, I would prefer to optimize everything, starting from a valid base to give me something more? concrete, otherwise not even you perdeei resources and time... for me at least I see it so? ;-)
M999
well, it is, in part, I agree...to stay in topic I replied to those who ask for a nice sound and is not interested in changing the performance...even if it's on a diesel turbo the exhaust ? little influential...
rebirthafterrevenge
22-08-2013, 22:21
carlo abarth
22-08-2013, 22:52
you need to remove everything and empty the terminal!!some of my friends, so do it!!!
The Alfa GT, maybe, had a drain serious and made with all the trimmings. Have you ever heard a Porsche with a full Tubistyle? F? goosebumps!! And, put on a tour slowed down, you realize that the engine makes what you must... with an expenditure of a few thousand Euro, side dish, add to the cost of the exhaust.
This is to tell you that a drain serious and functional ? absolutely within the reach of the amateur who wants to build one in the garage, both as a know-how of materials, construction tools, theory/practice/experience of design and ability? of the focus point... unless you have a rehearsal room under the house with all annessie connected. There are some software to help preparers that, by inserting a multitude of basic variables (motor, flow rates, etc) are able to generate a base. This sidve add to the experience and capabilities? a preparer and, behold, he jumps out of the drain with all the trimmings.
I repeat, the exhaust of an engine ? a serious thing and must be functional to the purpose? for which you change: performance... if you then want to make a lot of noise, well, try as better to believe and have fun ;-)!!
M999
mikyrace82
23-08-2013, 00:45
if you want an exhaust that makes buuuuu...you have to have tuuutttoo the tube ****** with an aftermarket silencer also ******...
if you want an exhaust that is schhhhhhhhhh...you need to have the drain all ****** with or without aftermarket muffler with a washer inside which reduces the pipe cross-section....
if you want an exhaust that is bropopopopo empty and reattach the cover of the original silencer...
I will conclude with a big laugh:D
nasone147
23-08-2013, 02:14
if you want an exhaust that makes buuuuu...you have to have tuuutttoo the tube ****** with an aftermarket silencer also ******...
if you want an exhaust that is schhhhhhhhhh...you need to have the drain all ****** with or without aftermarket muffler with a washer inside which reduces the pipe cross-section....
if you want an exhaust that is bropopopopo empty and reattach the cover of the original silencer...
I will conclude with a big laugh:D
rebirthafterrevenge
23-08-2013, 08:09
if you want an exhaust that makes buuuuu...you have to have tuuutttoo the tube ****** with an aftermarket silencer also ******...
if you want an exhaust that is schhhhhhhhhh...you need to have the drain all ****** with or without aftermarket muffler with a washer inside which reduces the pipe cross-section....
if you want an exhaust that is bropopopopo empty and reattach the cover of the original silencer...
I will conclude with a big laugh:D
THANKS! at least now beginning to do some testing :)
you need to remove everything and empty the terminal!!some of my friends, so do it!!!
Exact the terminal emptied, cos? roars, while only one tube direct=breath of gas that go away quickly because of the high compression of the diesel
In the case add also the speed? that in pi? the turbine, but primarily c'? the high compression of the engine
rebirthafterrevenge
23-08-2013, 16:34
I believe that if you empty the final of the turbo does not happen any change, because c'? the precatalizzatore, and the catalyst that maintain the speed? exhaust gas constant !
mikyrace82
23-08-2013, 22:13
I believe that if you empty the final of the turbo does not happen any change, because c'? the precatalizzatore, and the catalyst that maintain the speed? exhaust gas constant !
no no those who want the diamond must delete all..nothing catalysts of any kind..
mikyrace82
23-08-2013, 22:14
no no those who want the diamond must delete all..nothing catalysts of any kind..
normally if you switch on the exhaust ****** c? a slight increase of the peak..
mikyrace82
23-08-2013, 22:16
I believe that if you empty the final of the turbo does not happen any change, because c'? the precatalizzatore, and the catalyst that maintain the speed? exhaust gas constant !
no, if you want the rumble, you need to remove any catalyst..***** and change in c? an increase of the peak.
In the case add also the speed? that in pi? the turbine, but primarily c'? the high compression of the engine
Ah you? if anything, the turbine absorbs energy and, given the shape of the nut, it slows down - exit - exhaust gas coming from the engine. Enlighten me if ? to the contrary...
Guys, I speak not from hearsay but bens? with the experimental evidence at hand. Notwithstanding the fact that in order to develop a discharge is v? for step is to "mechanical" and true of adjustments to the electronics, but without tools and equipments, where you come from?
When I prepare a motion with the amendments, even up to the masses volaniche, retouching necessarily advances. But without a drum roll and a reading of their output, you need at least to understand what is happening, do not work there... let alone with a drain.
'm looking for? that here we are talking about much more rather than to increase the performance of an engine so efficient, but the noise... let me, but certain things will not discuss them, we have visions of the context are too far away. I apologize in advance if I have bored with some proposition too. Step and close.
M999
mikyrace82
24-08-2013, 00:55
by ? been told more? times in this tread we talk about noise and nothing else...? a tread light of chatter from the bar on who is pi? brooomm...don't you ? he never talked about performance.
by ? been told more? times in this tread we talk about noise and nothing else...? a tread light of chatter from the bar on who is pi? brooomm...don't you ? he never talked about performance.
To be clear, I'm caught, I didn't want to pick on anyone, and nor do I want someone to take it ;). Only that I am a perfectionist and sometimes I realize I'm breaking with my hands on... for this, however, I apologized if I sbomballato with my disquisitions... they are a pain in the ass, I admit it HAHAHAHA!!!! OK, I quote you immediately in careggiata...
Jokes aside, wanting to give my small contribution to the question "rombosa", you get interesting results in terms of sound, working on the diameters of the manifolds end, I mean the part before the muffler, and the creation of the resonators ad hoc that cause pressure drops and sound to be able to emphasize high or low frequencies. Wanting to push forward the thing ? a p? what the f? on the large mono Supermotard, Enduro and Cross. If well optimized, you can even get a performance boost, but the one which you point ? going to vary virtually the length of the manifold to mitigate/change the sounds? exhaust, especially in the Enduro pu? create trouble to the phonometric tests. So for example, type this:
5010
The concept ? been applied even on the Zonda Pagani own to modulate the sound of the exhaust at frequencies pi? "catchy" and is pleasing to the passionate and lucky owner.
5011
M999
Ah you? if anything, the turbine absorbs energy and, given the shape of the nut, it slows down - exit - exhaust gas coming from the engine. Enlighten me if ? to the contrary...
M999
If anything, the crowd rellenta the exhaust gas when she the same ? under load the speed? of the gas on a motor cycle 8 ? datta as I specified in my first intervention by the high compression of the engine is the same, the difference in the sound there ? why? in the diesel c'? combustion is not an explosion, while the sound of an engine benza ? given the shape of the exhaust uk also the compression with the consequent outbreak at the end of the cycle.......,then if you are talking about the exhaust is designed to obtain better performance!on a benza you get pi? easily that on a diesel, the diesel if you can, you can make it sound good, but it is difficult to get increases
Cele... damn keyboards!! Mine was not absolutely a tease or a want to be presumptuous and when I asked lumens, and there was no tone sarcastic!! I don't want you to have misunderstood. On the other hand, I smeno on the bike, on the drive there I do very little ;)
But in the end, correct me if I'm wrong, we said the same thing: the turbine absorbs energy that slows down the gas discharge (absorbing kinetic energy).
I did not go back, instead, the discourse on the combustion in diesel engines and combustion in gasoline engines (have to admit my ignorance on the subject of diesel engines). In the petrol engine has a combustion driven by the stroke of the spark of the spark plug that produces its power, and then a flame front which, by exploiting the properties? entropy of the air/fuel mixture propagates to the interior of the combustion chamber. In the diesel combustion ? automatic, takes advantage of the compression induced mechanically to the mixture of air and fuel to get to the ignition of the same. I wanted to ask you, the title of the discussion is purely academic, in the case of the diesel is also a propagation of the flame front? In both cases, the combustion of the air/fuel mixture is not ? similar to an explosion (induced or auto that dir if you want) or there are differences of physical character dates from the different characteristics given by the mixtures of fuel and air which he had with the two different types of fuel?
On returning to the full in topic, we have cos? a lot of differences in the take advantage of the washing phase/cross between a diesel engine and one petrol, by adjusting the discharge as a result? You wouldn't of publications that you would recommend to see in this way or hit instrumental?
Thank you for your patience and time you want to dedicate myself... but I think that we are made of the same stuff - from what I read in your signature - "unbridled Passion for everything that has a motor, internal combustion," ;)
M999
mikyrace82
24-08-2013, 16:20
in a few words in the diesel the intersection ? zero...
Dear m999, the principle of operation ? almost the same but not the same on the petrol c'? a real explosion on the diesel c'? a combustion that causes it to expand, the gas compressed in the combustion chamber, in fact, the process lasts still in the phase of descent of the piston
mikyrace82
25-08-2013, 00:02
quotissimo...
dantesfx
01-09-2013, 19:09
C'? to say that there are diesel engines that lend themselves more? to make a nice "sound" for structural reasons.
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