Ducati Monster Forum

Just bought a DUCATI Performance 2 into 1 complete exhaust system.

I have seen pics on here before...but can't find any now?
If anyone has or know where I can find them...many thanks!!

You just bought it.  Take pictures when it gets there.

Here is a link

http://www.ebay.com/itm/120845169795?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2648 (http://www.ebay.com/itm/120845169795?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2648)

coming from Netherlands going to take awhile! [bang]

Just a heads up, I don't think that's a Ducati Performance exhaust. Not that I'm doubting it's quality but it certainly doesn't look like a DP piece.

Its listed in the DUCATI Performance PDF "fiche" under part number  96002899C

Page 19

+1.  No DP exhaust system would ever sell for that cheap.

well,  I guess I will see when it arrives, if its real DP or not.

But the seller does have 1123 transactions on ebay, with 100% positive feedback & he accepts returns all his items.

 [leo]

looks like the one i had (it was round muffler), they're the old gia.co.moto style.  was too big for a 750, lost power everywhere compared to std headers and slip ons.

http://www.bikeboy.org/graphs/750mg12.gif (http://www.bikeboy.org/graphs/750mg12.gif)

I am not looking for performance gains.....just like the look.  [drool]
I do plan on using a different slip on.

Just cause it might not be a DP piece doesn't mean it won't work for you, if you like it that's all that matters!  [thumbsup]

And hell, like you said, if you don't like it and the seller will let you return it then return it and try something new.
 
[Dolph]



Hey Brad, when you say too big for a 750 do you just mean the silencer? It doesn't seem the header pipe is much bigger/longer than a stock system, can't really tell in the pics on ebay what the diameter of the pipes are though. Would there be any benefit to the system if the OP tried a different silencer?

Are there any back pressure issues with the 2 into 1 causing a loss in power?

Also, I think the OP has a 900. A little more grunt than the 750, have you dyno'd this type of system on a 900?

Great buy

from my report:

>> the pipe is around 43mm with the collector around 48mm from memory.

std is 40mm od on all monster 2v headers, so it's a size bigger.

it looks like dp to me, nice header set i thought, just too big.  should be able to force it onto a 900 given it has sprung slip joints.  no 2v i've ever dynod has made more power with a bigger exhaust that i can recall.

Brad,
I dont plan using the megaphone can that is pictured with the 2 - 1 system.
I would like to use a shorter exhaust can.
How would that alter performance?

Also, will the position of the outlet of the 2-1 (where the exhaust slip on would attach )
be in about the same area, as the stock system?

the system i had was with a round aluminium muffler, same as i had on my 888 full system that worked very well.  http://www.bikeboy.org/pics/888_3.jpg (http://www.bikeboy.org/pics/888_3.jpg)

so i can't see it being a muffler issue.  the pipe is just too big.

i don't recall how it fitted now, i think the pipe ended futher back than a std header.  no photos of it fitted.

st2 std versus 45mm 2-2 header with fabricated x-over - http://www.bikeboy.org/graphs/st2b3.gif (http://www.bikeboy.org/graphs/st2b3.gif)

NICE, i saw this while looking for a 2-1 and almost did the buy it now. im anxious to hear your feedback and the pipes on the bike. please keep us posted.

what brad is saying is that to get more power out of it, you should restrict it a little, maybe stuff a sock into the split to provide some back pressure.

So, I should create a little resistance in the pipes before exhaust gases reach the muffler?

i was being a bit sarcastic

but that is the issue that brad is talking about

the wider pipe provides far more volume (i.e. (pi × 43^2 × h) minus (pi × 40^2 × h).. just 100mm of pipe would give over 19,000 cubic mm more volume.

restricting the flow makes up for this somewhat because the constriction acts to offset the diameter somewhat.

maybe a restrictor donut weld into the 2:1? 

Yeah, I got that!!
But I thought there might be some truth behind the thought ;)
I should reiterate I am not doing this conversion for performance ...I just like the look.
But while I am in there I would like to make it as efficient possible.....and not crazy loud!!  [laugh]

i don't agree that a restriction would act like a smaller pipe, nor do i agree that they need back pressure.  they just need to be appropriately sized.

Brad, what I think you're trying to say is smaller pipe means more velocity on the exhaust. larger pipe means less velocity. a motor like the 750 doesn't pump enough exhaust to fully use the larger pipe and keep the velocity of the gas up enough to keep it flowing smoothly, possibly resulting in exhaust reversion issues.

two thoughts i have on a solution

making the crossover happen sooner. a guy i met explained to me how he would put shoe polish on pipes and where it stopped burning off, that's the cut point for drag pipes or crossover point. I think on a larger diameter exhaust on a smaller capacity bike that point is going to be closer to the head.

another though I have is use of the torque cones like on the short pipe harleys as a solution to this problem. This would speed of the initial exhaust of the exhaust from the head and stop any reversion issues. this is what I want to try if I stick with my 2 into 2 exhaust setup.



 

Wow, the header system is in Honolulu already!!
Slated for delivery on Monday.
It was sent UPS....using UPS "Quantum View" able to follow every leg.
I assumed it would be at least a 2 week wait.
 [Dolph]

Brad & all others knowledgeable about exhaust & mufflers scenario's!!?

What would your guess be about db, sound quality & performance using this 2-1 system with one of these mufflers?

1-  http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230731694177&category=35573&_trksid=p5197.c0.m619 (http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230731694177&category=35573&_trksid=p5197.c0.m619)
2-  http://www.ebay.com/itm/170764894809?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 (http://www.ebay.com/itm/170764894809?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649)
3-  http://www.ebay.com/itm/200692867120?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 (http://www.ebay.com/itm/200692867120?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649)
4-  http://www.ebay.com/itm/06-10-R6-Leo-Vince-Unlimited-Shorty-Slip-Exhaust-System-Polished-/190614938153?pt=Motorcycles_Parts_Accessories&vxp=mtr&hash=item2c61892229 (http://www.ebay.com/itm/06-10-R6-Leo-Vince-Unlimited-Shorty-Slip-Exhaust-System-Polished-/190614938153?pt=Motorcycles_Parts_Accessories&vxp=mtr&hash=item2c61892229)

Aloha & Mahalo!!!

they don't act exactly like a smaller pipe, but they do help.  you can see the difference when you put "db eaters" into open pipes.  Same effect -- lower diameter = increase restriction by lowering volume.  decrease diameter of output = reduce flow.

Got the system today, couldn't believe how fast from the Netherlands to Honolulu, 5 days!!

Well, I don't know if its genuine "DUCATI Performance" or not, but I am very impressed with weld quality & fit at all the connections.
I will be very proud to sport this system...just hope its not to loud; though I don't plan to use the chrome can that came with the system.

I do plan to show the pipes to my mechanic and get his "pro" opinion of the authenticity of the system.  He is very knowledgeable on about all things DUCATI.

I will let you know [Dolph]

Unless its made in someone's garage, it will have some kind of homologation (or statement that it is NOT homologated) and the manufacturer's name or logo.  The DP exhausts made by Termignoni have a stamp of "Terry" the termi rider.

I always use a 2 in 1, think it is yust something different ;D

(http://supertjeduc.zenfolio.com/img/s2/v1/p302087414-3.jpg)

(http://supertjeduc.zenfolio.com/img/s2/v1/p169257171-4.jpg)

(http://supertjeduc.zenfolio.com/img/s2/v1/p855482609-4.jpg)

(http://supertjeduc.zenfolio.com/img/s9/v13/p428506451-4.jpg)

Same bike on all the photo's

Thanks for the pics Superjeduc!
I am glad to see someone else has done this system.  They all look good but the last one with the Akrapovic is my FAV  [Dolph]
I do plan to keep my current stock, passenger pegs so I won't get the can quite as vertical as I would like.
Did you notice power increase or decrease?
Also any advice before putting the system on?
Lastly is this 2-1 much louder ....I currently run stock cans cut down to 11'' and partially cored?
Thanks,
Frederick

Not much difference in power , the Akra is better than the Zard i think
And loud ?with baffle not , without yes

Well finally got the 2 into 1 system installed along with new sprockets & chain...shaved down seat and 20mm rear height spacers installed.

The bike looks, rides &  (sounds a lot different).  Its more quiet actually.
The  "rear height" increase didn't change the ride as much as I was afraid it might, thankfully.... it is a little quicker steering.
I sure like the look with ass kicked up [clap]

The 2-1 system seems now that the power is more towards the top 5000 rpm-7500 rpm, not as much low end torque as before.
But, some of that could be my gearing, it is 1 tooth taller now.

I have installed a Two Brothers M2 can......its in a temporary position.  Looking for a much shorter mid pipe.
This has been a challenge ...because I want to keep my stock rear sets (my dates love my Monster  [thumbsup])!!!

Got some pics if someone can post

PM me the links I'll help you get them up.

I'm sure every one would like to see the result!  [thumbsup]

Almost....98% there

Two Brother's can is gone; decided to go with a Yoshimura R-55 (short modern shaped megaphone).

Initially was having trouble getting the can to seal with the header's....giving a lot of popping on decel.
Had to butcher the chrome megaphone that came with the system...using the 2'' slip joint as my "mid pipe" welded to the Yoshi.
Now I need to fab up a carbon fiber heal guard.

Regarding performance....this system is actually a little quieter, than the stock original 10'' shortened cans with stock header.
Does have the "Ducati" throaty tone...just not at the higher decibel level as before.

As far has power goes, seat of my pants impression is no negligable power loss.  Does feel more top end VS low end.  But that might be the gearing change I made at the same time.  Was 14t & 41T...now  15T & 43T

Overall, I am very happy was the outcome.....I really like the look of the 2-1 system.
Along with the 30mm rear end raise & new shaved seat....I feel like I own a new bike!! [thumbsup]

(http://i575.photobucket.com/albums/ss192/118811/IMG_2148.jpg)

(http://i575.photobucket.com/albums/ss192/118811/IMG_2151.jpg)

(http://i575.photobucket.com/albums/ss192/118811/IMG_2138.jpg)

Bike as she currently sits....
now onto moving windscreen back [Dolph]

HOOLGN

 [thumbsup]

Nice job  [thumbsup]

Thanks DucNaked [Dolph]

Nice work!  [thumbsup]

Got a sound clip?