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Author Topic: D & D Exhaust  (Read 1553 times)

arunvader

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D & D Exhaust
« on: April 02, 2013, 02:38:26 PM »
Hello Everyone.

Sorry please excuse the newbie but this is my first bike so I'm new to all this stuff.
I got a couple questions about D & D exhaust. So I ordered and received the full system about a week ago. After removing my old exhaust I found out I was missing the exhaust gasket. So I went ahead and installed the new exhaust (without the gasket)  only to realize my bike was now popping as I let up on the throttle. Could the backfiring be due to the fact its missing the gasket? Also if anyone has installed the D & D exhaust can you please let me know so I can talk to you about the installation of the air filter. D & D aren't too helpful over the phone they just refer me back to the poorly written instructions they send with the system.

Cheers

barenekd

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Re: D & D Exhaust
« Reply #1 on: April 02, 2013, 02:55:58 PM »
The lack of a gasket could definitely cause the popping.
Good gasket source; http://www.aircraftspruce.com/catalog/eppages/an900.php?clickkey=7239
These will do the job. Measure the exhaust port before ordering.
Bare
2013 Moto Guzzi V7 Racer
2011 Black Classic G5 (RIP)
I refuse to tiptoe through life only to arrive safely at death
http://www.controllineplans.com

motorat

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Re: D & D Exhaust
« Reply #2 on: April 02, 2013, 03:24:03 PM »
cmw or your local dealer can also provide the gasket. i am the one who put up the youtube video.
if you are near the sf bay area i could drop by and give you a hand.
Joe
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Ducati Scotty

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Re: D & D Exhaust
« Reply #3 on: April 02, 2013, 03:31:17 PM »
+1 to Aircraft Spruce.  I was surprised that the stock gasket was flat material instead of a copper crush like those.  Those are better IMO, great for sealing slight irregularities.  Order a few, cheap and good to have around. 

Scott

foggy95

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Re: D & D Exhaust
« Reply #4 on: April 02, 2013, 03:54:39 PM »
That D&D full system looks and sounds real nice. However, I was under the impression from reading a few posts on this forum that increasing the size (I.D.) of the header pipe would result in an actual loss of power, unless accompanied by the installation of a Power Commander - and this D&D header certainly looks like a larger diameter. Couple that with the freer flowing intake mod, I wonder if the stock, unmodified ECU could possibly compensate. Jack - your opinion on this?

Anyone that has made this mod, (without the PC) and is happy with the results, I'd sure like to know.

PS - It may be just me but I hate popping and backfiring on decel ....

forgot the link: http://www.youtube.com/watch?feature=player_embedded&v=vYfHorzHgfI
Chester County, PA
2012 Moto Guzzi V7 Racer

Ducati Scotty

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Re: D & D Exhaust
« Reply #5 on: April 02, 2013, 04:00:28 PM »
There is an outside heat shield that makes it look huge.  Inside is close to stock and stepped to a different diameter part way along the pipe to help keep the gases flowing at an ideal rate as they cool.

http://www.enfieldmotorcycles.com/forum/index.php/topic,15069.msg161863.html#msg161863

"The pipe is a stepped head pipe, 1 5/8 out of the head to 1 3/4. They have a 2 1/4 full length heat shield back to the muffler, that is what gives the head pipe that big look."

And this is designed to go with a free flow air filter (available from them) and the stock ECU.

Scott
« Last Edit: April 02, 2013, 04:14:44 PM by Ducati Scotty »

arunvader

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Re: D & D Exhaust
« Reply #6 on: April 02, 2013, 04:14:42 PM »
Thanks guys.

I should have the gasket by the end of the week so hopefully that is my issue.


Ducati Scotty

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Re: D & D Exhaust
« Reply #7 on: April 02, 2013, 04:15:34 PM »
Another place to check for leaks once you're running again is where the pipe and muffler meet, though that is less critical for the popping.

Scott

foggy95

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Re: D & D Exhaust
« Reply #8 on: April 02, 2013, 04:21:39 PM »
There is an outside heat shield that makes it look huge.  Inside is close to stock and stepped to a different diameter part way along the pipe to help keep the gases flowing at an ideal rate as they cool.

http://www.enfieldmotorcycles.com/forum/index.php/topic,15069.msg161863.html#msg161863

"The pipe is a stepped head pipe, 1 5/8 out of the head to 1 3/4. They have a 2 1/4 full length heat shield back to the muffler, that is what gives the head pipe that big look."

And this is designed to go with a free flow air filter (available from them) and the stock ECU.

Scott

Thanks for that clarification and link, Scott. I've been 'out of the loop' for some time after having sold my C5 last Fall. This D&D set-up looks very good.

Now if I can just make up my mind - C5 or G5 .......
Chester County, PA
2012 Moto Guzzi V7 Racer

Ducati Scotty

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Re: D & D Exhaust
« Reply #9 on: April 02, 2013, 05:09:05 PM »
The G5 Deluxe is a sexy bike...

Jack Leis

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Re: D & D Exhaust
« Reply #10 on: April 02, 2013, 08:36:39 PM »
Definitely get the G5 Foggy. As far as a D&D pipe set up , I have absolutely NO experience with them. I had bought a Hitchcock's pipe and had dismal results. My bike runs great right now with the stock pipe with a Goldstar silencer. The sound is to die for and it pulls pretty good. Im done messing with the exhaust.
« Last Edit: April 02, 2013, 08:38:57 PM by Jack Leis »
I would much rather ride a slow bike fast than a fast bike slow    Jack

wildbill

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Re: D & D Exhaust
« Reply #11 on: April 03, 2013, 02:53:39 AM »
foggy
Any reason for selling your c5
2011 C5
2012 C5
2013 B5
2014 continental gt
2004 mazda-speed miata

foggy95

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Re: D & D Exhaust
« Reply #12 on: April 03, 2013, 07:40:16 AM »
foggy
Any reason for selling your c5
I had two bikes, the RE and the Triumph T-100. I spent quite a bit of money on the Triumph, much more than I had invested in the RE. Then, I bought the MX-5 and felt I should sacrifice one of the bikes to appease SWMBO ... so the RE went to a new home. I've missed it ever since. Granted, the Triumph can do everything the RE could do, better. But, it doesn't have the charm or character. So, I'm after another one, and SHE will eventually get over it.

I'm probably a couple months away from actually making the purchase, somewhat torn between another C5 and the G5 Classic.
Chester County, PA
2012 Moto Guzzi V7 Racer

wildbill

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Re: D & D Exhaust
« Reply #13 on: April 03, 2013, 07:48:44 AM »
more important - don't sell the mx5. i think they are one of the best sports cars around and i've had a few.
2011 C5
2012 C5
2013 B5
2014 continental gt
2004 mazda-speed miata

barenekd

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Re: D & D Exhaust
« Reply #14 on: April 03, 2013, 02:44:56 PM »
The unfortunate demise of my MX5.
Bare
2013 Moto Guzzi V7 Racer
2011 Black Classic G5 (RIP)
I refuse to tiptoe through life only to arrive safely at death
http://www.controllineplans.com