Removing crossover....tone change?
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Chelseasnake
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the sound changes from a ups truck, to a fed ex truck
Green viper 1
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I think it sounds better, about as good as you can make one of these cars sound
LOL. It will be slightly louder then a Gen 4 viper during idle and light load. Gen 4 vipers do not come with a crossover from factory, but they were able to keep the noise down with the new "cam in cam" camshaft.
A belanger system on a Gen 3 is louder at idle then a Gen 4 belanger for the same reason.
Previous owner stated the car does have roe exhaust and it does sound like it has an aftermarket exhaust. I love the way it sounds and wont mind if it's a bit louder I just don't want the tone/pitch of the exhaust to change like when you remove cats.
I'd like to understand how you will accomplish this. Is there a kit (short of an entirely new cat-back exhaust system) that removes the crossover and simply turns the exhaust directly out?
Bryan
Allan
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Only way to do it is with a cat-back system
Allan
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get rid of the footwell heat by getting rid of the cats.
Green viper 1
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think of it like a oven if you have heat all around its gonna be really hot inside.
Green viper 1
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if you can find 08-10 tips you remove crossovers that's what I did made heat a lot better
No true you can just cut the crossover off and weld in new tips to exit the side sills.
No kit is needed. You just cut it off and weld in new tips to the mufflers. Vipeair has good exhaust tips for this.
Mine is also in the footwells and center console.
It would be way easier just to add some Gen 4 mufflers (or Mopar performance mufflers) and not cut anything. This leaves your options open if you want to change things later. You can find take off Gen 4 mufflers for cheap if you look. The tips have to be positioned in a very specific area so they do not damage the sill panel. It is just easier with OEM parts that were made to fit.
Most of the heat does come from the footwells (cats) but it does not help that with the crossover you have a exhaust pipe positioned inches away from your ****.
I am not sure how to answer your "does it change the exhaust tone" question. Personally I like the sound way better without the crossover. Never mind the 22LB of weight you save, or the complicated mess of pipes you currently have.
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unreelviper
Enthusiast
I have a 2.5 inch mopar street exhaust(used) if anyone is inteested. Shoot me a pm >
If you already have aftermarket exhaust (roe) then you shouldn't have crossovers in there anyway... As far as I know all the catback systems out there go right out the side. (unless someone put new mufflers in and didn't change the pipes? I can't imagine why..??)
If you are planning to DIY open up the sills and look at what you have before you spend any money on parts.
... It can still get pretty hot in there even with a catback system if the cats are intact/ unmodified.
Ill be doing just that this week!
Richie7
Viper Owner
I have stock gen 4 cats and mufflers shoot me a pm if anyone needs it
bigmack339
Enthusiast
exactlyI sort of like the sound of my '08 (stock) but I recognize that it is not generally considered one of the all time greats, in terms of sound. Everyone seems to blame it on the fact that it's a V-10 (odd firing order) which I don't get! The Lambo Gallardo is a V10 and sounds awesome, same with the Porsche Carerrra GT, and the Lexus LFA, even the Audi R8 (I know the Lambo engine) .
So, what gives?!
Someone smarter than me please explain
So, what gives?!
Someone smarter than me please explain
Here ya go. The reason foreign supercars sound so awesome is due to the flat plane crank (180 degrees). American V8's are 90 degree cranks whereas the viper is an odd 72 degrees (due to the V10).
http://forums.viperclub.org/threads/593970-uneven-engine-firing?
Thanks! Does anyone know of some plain steel tips (vs the stainless steel from Vipair)? I don't have a setup to weld SS...
latamud
Enthusiast
I sort of like the sound of my '08 (stock) but I recognize that it is not generally considered one of the all time greats, in terms of sound. Everyone seems to blame it on the fact that it's a V-10 (odd firing order) which I don't get! The Lambo Gallardo is a V10 and sounds awesome, same with the Porsche Carerrra GT, and the Lexus LFA, even the Audi R8 (I know the Lambo engine) .
So, what gives?!
Someone smarter than me please explain
I think the Gen4 has a different tone because there is no crossover pipe like the Gen3. The crossover has a connection similar to an H or X pipe that allows the tone of all 10 to push out both sides. So either side of the car that you stand at you hear all 10 cylinders firing together. On the Gen4, all you hear is 5 cylinders from one side.
So the Eurpean Supercars (ie. Lambo Gallardo) have a V10 with a flat plane crank?!
Sonoman
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People always ask why these Vipers sound so different from a V8. Using a 90-degree V-spacing between the two banks of cylinders, with only eight cylinders you can fire every 72 degrees and complete the firing order (+2 extra firings) every two revolutions (360 x2=720 degrees; the four-stroke engine crankshaft rotates twice to accomplish the intake, compression, power and exhaust strokes). So you get a nice, even-fire sound with the exact same timing between each firing of a cylinder on a 90-degree V-8. (This assumes it has a cross-plane crankshaft where each bank of four cylinders has 90 degree offset between each subsequent connecting rod).
The 90-degree V-10 used in the Viper does not fire at evenly spaced intervals, which creates all kinds of interesting acoustic effects whether or not you combine the exhausts of the two banks together. Instead of the cylinders firing 72-72-72-72... as in a typical V-8, we get firing intervals of 90-54-90-54-90-54-90-54-90-54... The ear detects this odd cadence and the harmonics associated with it.
While it may sound like a delivery truck from idle to 2500 or so RPM, I love the sound of the Viper at higher revs.
BTW, Lamborghini uses two different V-10s, the older 5.0 liter has a flat-plane/even firing crank while the post-2008 5.2 liter is an odd-fire just like the Viper (90-54-90-54...).
The 90-degree V-10 used in the Viper does not fire at evenly spaced intervals, which creates all kinds of interesting acoustic effects whether or not you combine the exhausts of the two banks together. Instead of the cylinders firing 72-72-72-72... as in a typical V-8, we get firing intervals of 90-54-90-54-90-54-90-54-90-54... The ear detects this odd cadence and the harmonics associated with it.
While it may sound like a delivery truck from idle to 2500 or so RPM, I love the sound of the Viper at higher revs.
BTW, Lamborghini uses two different V-10s, the older 5.0 liter has a flat-plane/even firing crank while the post-2008 5.2 liter is an odd-fire just like the Viper (90-54-90-54...).
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CaptainDavid
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Thanks Sonoman, the best explaination I've heard relating to the Viper sound. Reliable sources have told me that SRT designed the exhaust system in a Gen 3 to satisfy Federal decible requirements. Thats why the system go over the river and through the woods to exit the car on opposite sides.
Do yourself a huge favor and rip um out. save weight gain horsepower and be happy. I was, especially when I saw the amount of pipe that came out of my 04. Seems the fellow who designed the folding canvas top for the Gen 1&2 was assigned the design task for the Gen3 exhaust.
Do yourself a huge favor and rip um out. save weight gain horsepower and be happy. I was, especially when I saw the amount of pipe that came out of my 04. Seems the fellow who designed the folding canvas top for the Gen 1&2 was assigned the design task for the Gen3 exhaust.
