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Ducati Monster Forum
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Speeddog
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2 into 1 exhaust question
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Topic: 2 into 1 exhaust question (Read 3236 times)
memper
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Posts: 1439
2 into 1 exhaust question
«
on:
November 10, 2012, 05:08:17 PM »
On my '99 I have low mount headers. Couldn't I conceivably cut off one of the little sections of pipe where the slip on connects, (at the base 'Y' connection point) and weld the hole closed, and run a single slip on exhaust? I realize that this may not be optimal in terms of exhaust flow as compared to a proper pipe set up but I think it would work as a low budget solution.
«
Last Edit: November 10, 2012, 05:10:26 PM by memper
»
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"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man
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motoxmann
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'00 M750
Re: 2 into 1 exhaust question
«
Reply #1 on:
November 10, 2012, 10:25:44 PM »
doing that would severely reduce higher rpm power, mostly due to the design of the "X" crossover. you'd need to remove the entire crossover and design something completely different for it to be somewhat efficient even as a comparison of performing equally to the current setup
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brad black
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Re: 2 into 1 exhaust question
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Reply #2 on:
November 10, 2012, 11:22:24 PM »
there is a thread, here or on ms i think, about someone cutting the stamped piece out except for the outer section on one side and welding in matching half sections of pipe on the inside of the y. lots of pages it went for, can't remember where or by who now. it eventually got dyno tested and seemed to work surprisingly well.
just blocking one side will result in only about 1/2 the cross sectional area of the headers remaining on the other side. it should hurt it a lot.
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Brad The Bike Boy
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brad black
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Re: 2 into 1 exhaust question
«
Reply #3 on:
November 10, 2012, 11:36:03 PM »
not the right thread, but a similar picture here:
http://www.ducatimonsterforum.org/index.php?topic=40193.0
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Brad The Bike Boy
http://www.bikeboy.org
Raux
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Re: 2 into 1 exhaust question
«
Reply #4 on:
November 11, 2012, 12:08:22 AM »
IF you can find one, the <1993 600SS had 2 into 1 headers with Single Exhaust.
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brad black
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Re: 2 into 1 exhaust question
«
Reply #5 on:
November 11, 2012, 06:15:17 AM »
which is one (or two) sizes smaller than the 900 headers and hurts power on a 600 ime. it was the 400 header set.
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Brad The Bike Boy
http://www.bikeboy.org
Raux
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Re: 2 into 1 exhaust question
«
Reply #6 on:
November 11, 2012, 07:57:41 AM »
I was using it more as an example of how ducati has done it for visualization.
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memper
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Re: 2 into 1 exhaust question
«
Reply #7 on:
November 11, 2012, 10:38:34 AM »
gotcha. Cheap solutions usually merit cheap results. Just something I'm considering for the spring
So to counteract the exhaust restriction I would really have to weld on bigger header ends...do math...etc...etc. Or dial down the jets to handle the restricted exhaust. Which might balance things out but not necessarily make better performance/power.
«
Last Edit: November 11, 2012, 11:04:02 AM by memper
»
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"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man
-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.
Düb Lüv
ASE master internet mechanic
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Re: 2 into 1 exhaust question
«
Reply #8 on:
November 12, 2012, 05:38:00 PM »
Quote from: brad black on November 10, 2012, 11:36:03 PM
not the right thread, but a similar picture here:
http://www.ducatimonsterforum.org/index.php?topic=40193.0
it ended up as a epic fail. definitely would have needed to rejet the carbs. it choked the bike out bad wouldn't even run enough to ride.
Quote from: Raux on November 11, 2012, 12:08:22 AM
IF you can find one, the <1993 600SS had 2 into 1 headers with Single Exhaust.
i had this saved in my watch list
http://www.ebay.com/itm/DUCATI-MONSTER-800-STOCK-OEM-EXHAUST-MUFFLER-HEADER-PIPE-/170937960915?pt=Motorcycles_Parts_Accessories&hash=item27ccb249d3&vxp=mtr
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ducatiz
No trellis. no desmo. = Not Ducati.
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Re: 2 into 1 exhaust question
«
Reply #9 on:
November 12, 2012, 06:08:31 PM »
Quote from: Raux on November 11, 2012, 12:08:22 AM
IF you can find one, the <1993 600SS had 2 into 1 headers with Single Exhaust.
Restrictive even for the 600 with the small valve heads and ugly.
The mod on Ducati.Ms is pretty interesting. Im not sure it is a good idea on a 900 though. Maybe a 750 will be OK but its a lot of gas to push without going up in pipe diameter.
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H-2 CHARLIE
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Re: 2 into 1 exhaust question
«
Reply #10 on:
November 12, 2012, 08:49:10 PM »
My M 750 F.I. has that same 2 into 1 pipe but i have a short yosh can . it sounds very good and pulls great down low and in the mid range , i get a few super light pops but nothing bad or to worry about because its not all the time and its like its running out of gas pop . the bike came that way when i got it and has nylon hoddie material, steel zipped over the horn runners . im sure a lost some top end but im 1 down and 1 down in the rear and she rides fine at 85-88 over the road . pulls off the line like mad too.
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brad black
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Re: 2 into 1 exhaust question
«
Reply #11 on:
November 13, 2012, 02:29:12 AM »
Quote from: Düb Lüv on November 12, 2012, 05:38:00 PM
http://www.ebay.com/itm/DUCATI-MONSTER-800-STOCK-OEM-EXHAUST-MUFFLER-HEADER-PIPE-/170937960915?pt=Motorcycles_Parts_Accessories&hash=item27ccb249d3&vxp=mtr
talk about "i've got some shit and no idea what it is so i'll just make it up"
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Brad The Bike Boy
http://www.bikeboy.org
Raux
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Re: 2 into 1 exhaust question
«
Reply #12 on:
November 13, 2012, 02:38:03 AM »
Quote from: brad black on November 13, 2012, 02:29:12 AM
talk about "i've got some shit and no idea what it is so i'll just make it up"
yeah, i was wondering the same. never saw an 800 with 2-1
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ducatiz
No trellis. no desmo. = Not Ducati.
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Re: 2 into 1 exhaust question
«
Reply #13 on:
November 13, 2012, 03:39:36 AM »
Quote from: brad black on November 13, 2012, 02:29:12 AM
talk about "i've got some shit and no idea what it is so i'll just make it up"
"Welcome to eBay! Its also rare!"
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Offended? Click here
"Yelling out of cars, turning your speakers out the window to blast your music onto the street, setting off M-80 firecrackers, firing automatic weapons into the air—these are all well and good. But none of them create a merry atmosphere of insouciance and bonhomie quite like a revving motorcycle.
MonsterHPD
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Posts: 565
Re: 2 into 1 exhaust question
«
Reply #14 on:
November 13, 2012, 02:36:00 PM »
Quote
............... never saw an 800 with 2-1
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Monster 900-2002 (sold, alive and well in the UK), 749R / 1100 HYM combo for track days, wifes / my Monster Dark 800-2003 (not entirely "Dark" anymore and a personal favourite) , 50% of 900SSie -2000 track bike for rainy days-now with tuned ST2 motor and Microtec ECU. Also parked due to having been T-boned on track.
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