Exhaust extension for DJ's mod ?

Topics related to the ownership, maintenance, equipping, operation, and riding of the R1150R.

Moderator: Moderators

Greybeard
Basic User
Posts: 86
Joined: Mon Jan 02, 2006 12:01 pm
Donating Member #: 0
Location: CT

Exhaust extension for DJ's mod ?

Post by Greybeard »

I've looked high & low ( well...Google & local stores ) and I can't find a 1.75" exhaust tip to fit the cat. :?

Anyone have a source? A secret stash?

The market's flooded with what we used to call "echo cans" but no thanks.

And may I say the "Down Under mod" is just the sound I've been searching for! I had a Staintune collector and a reverse meg silencer and at low revs each exhaust pulse was audible. Not smooth at all. I blame the minimal silencer for that but on a whim I tossed the cat back on and..... "giddyup"!

Plenty of time for quiet when I'm in the box. :wink:
User avatar
owldaddy
Lifer
Posts: 2104
Joined: Fri Mar 18, 2005 1:56 pm
Donating Member #: 0
Location: Bay area Ca.

Post by owldaddy »

I went to a local muffler shop for the extension. They tack welded it on to keep it in place. The weld is very small, and on the wheel side so it doesn't show. Should I decide to put a muffler on it someday (not likely) I can just grind the weld down to remove it. Total cost was $15. I love the sound, and the price was right. It sounds like a motorcycle now. Thanks DJ for the idea.
Don
2004 Ferro R1150R the stealthiest color
When everything's coming your way, you're in the wrong lane.
DJ Downunder
Honorary Lifer
Posts: 4776
Joined: Sun Mar 20, 2005 3:26 pm
Donating Member #: 0
Location: Melbourne

Post by DJ Downunder »

I'm surprised you guys have so much trouble finding a tip to fit.

I have so many auto shops and muffler/exhaust shops near where I live and they all have heaps to choose from.

You know you could use a 2" size and make a spacer (sleeve) so it will fit tight..also I think the bigger size look better.

This is a 2"...it was a chrome tip that expanded from 1 3/4" to 2"...I just cut a slot with a hack saw and used an exhaust clamp to hold it on.

DJ

Image
User avatar
hirsty
Basic User
Posts: 314
Joined: Thu Nov 03, 2005 6:36 am
Donating Member #: 0
Location: London UK

Post by hirsty »

I struggled in the UK too DJ - not a very good selection in our car accessory shops either.

Turning to eBay UK the choice gets better - I got a 47.5mm pipe from this guy & it's great. See eBay item #330039903986 for an example.
User avatar
chris
Basic User
Posts: 904
Joined: Sun Feb 26, 2006 4:30 pm
Donating Member #: 0
Location: Yorkshire UK
Contact:

Post by chris »

I 'borrowed' a section off the industrial vac here in the workshop...
Chris

2011 G650GS
Photos
User avatar
R4R&R
Basic User
Posts: 1696
Joined: Thu Mar 17, 2005 4:59 pm
Donating Member #: 293
Location: Springfield, VA

Post by R4R&R »

I found some site on the internet and ordered mine since NONE of my local auto parts stores had anything under 2". I'll dig up the details when I get home today. I think the final shipped cost was like $15. Check this post later this evening.
John
Member 293 (I think)
'17 Triumph Tiger 1200 XRX
User avatar
priapismic
Basic User
Posts: 333
Joined: Mon May 16, 2005 6:01 pm
Donating Member #: 0
Location: Mayberry, NE Texas

Re: Exhaust extension for DJ's mod ?

Post by priapismic »

Greybeard wrote:I've looked high & low ( well...Google & local stores ) and I can't find a 1.75" exhaust tip to fit the cat. :?
You didn't look far enough - what you want is in a warehouse in Chicago. Luckily for you it can be ordered over the web:

http://www.jcwhitney.com/autoparts/Prod ... 72/c-10111

BTW, not to hijack the thread, but I tried this mod (removing the stock muffler and replacing it with this tip) but I went back to putting the muffler on. I noticed a considerable decrease in fuel mileage (about 10%), plus I noticed a hiccup/hesitation around 5,000-6,000 RPM under full throttle, like when I was passing. YMMV. I eventually put the muffler back on.
Viagra Donor and well-known reprobate and provocateur ....
User avatar
thenewcamus
Basic User
Posts: 90
Joined: Thu Jul 27, 2006 6:29 pm
Donating Member #: 0
Location: Detroit, MI

Post by thenewcamus »

Thats great but it's over a foot long! The best I could find was a 2" diameter 9" long turndown. Apparently the only places these are easy to find are AUS and Cali.
DJ Downunder
Honorary Lifer
Posts: 4776
Joined: Sun Mar 20, 2005 3:26 pm
Donating Member #: 0
Location: Melbourne

Post by DJ Downunder »

BTW, not to hijack the thread, but I tried this mod (removing the stock muffler and replacing it with this tip) but I went back to putting the muffler on. I noticed a considerable decrease in fuel mileage (about 10%), plus I noticed a hiccup/hesitation around 5,000-6,000 RPM under full throttle, like when I was passing. YMMV. I eventually put the muffler back on.
Just a thought..how long did you try it for...did you re-set the thing-a-majig....I think it was something like key on..two full twists of the thottle..and key off..and then start..something like that resets the fuel injection thingie...although a couple of full throttle runs will do the same thing..I think..any one else know what I'm trying to say.

I have not noticed any hesitation or hiccups..and my local BMW mechanics so it should be no different to running with a sports exhaust..and far as performance and economy goes..(so he says).. :D

Also..I've tried a few different tips..I found a big difference in sound with different lenghts...and the shorter..and bigger diameter was way best.

DJ
User avatar
priapismic
Basic User
Posts: 333
Joined: Mon May 16, 2005 6:01 pm
Donating Member #: 0
Location: Mayberry, NE Texas

Post by priapismic »

DJ Downunder wrote:
BTW, not to hijack the thread, but I tried this mod (removing the stock muffler and replacing it with this tip) but I went back to putting the muffler on. I noticed a considerable decrease in fuel mileage (about 10%), plus I noticed a hiccup/hesitation around 5,000-6,000 RPM under full throttle, like when I was passing. YMMV. I eventually put the muffler back on.
Just a thought..how long did you try it for...did you re-set the thing-a-majig....I think it was something like key on..two full twists of the thottle..and key off..and then start..something like that resets the fuel injection thingie...although a couple of full throttle runs will do the same thing..I think..any one else know what I'm trying to say.

I have not noticed any hesitation or hiccups..and my local BMW mechanics so it should be no different to running with a sports exhaust..and far as performance and economy goes..(so he says).. :D

Also..I've tried a few different tips..I found a big difference in sound with different lenghts...and the shorter..and bigger diameter was way best.

DJ
DJ,
I tried this mod for 2 or 3 months, a couple of thousand miles - long enough to know I wasn't satisfied with it. Never did a reset of the Motronic (I guess that's what you were trying to explain :smt017 ) but I think mine would have "learned" about the missing muffler eventually and compensated for it.
Viagra Donor and well-known reprobate and provocateur ....
User avatar
chris
Basic User
Posts: 904
Joined: Sun Feb 26, 2006 4:30 pm
Donating Member #: 0
Location: Yorkshire UK
Contact:

Post by chris »

I never reset anything and haven't noticed any differences in mpg or power delivery.
Chris

2011 G650GS
Photos
User avatar
rdsmith3
Lifer
Posts: 2632
Joined: Mon Mar 21, 2005 9:53 am
Donating Member #: 74
Location: Flanders, NJ

Post by rdsmith3 »

chris wrote:I never reset anything and haven't noticed any differences in mpg or power delivery.
I reset my motronic, but I also did not notice any difference in mpg or power.

However, I did put the muffler back on because I think it looks better than the stubby pipe.
Bob
2002 Atlanta Blue
Lifetime Member #74
User avatar
R4R&R
Basic User
Posts: 1696
Joined: Thu Mar 17, 2005 4:59 pm
Donating Member #: 293
Location: Springfield, VA

Post by R4R&R »

Here is the link:
http://gmocart2.gmotion.com/store/merch ... =supergear

That is for a 3/4" x 9" turndown exhaust tip - chrome. I think it came to $9.00 shipped!
John
Member 293 (I think)
'17 Triumph Tiger 1200 XRX
Greybeard
Basic User
Posts: 86
Joined: Mon Jan 02, 2006 12:01 pm
Donating Member #: 0
Location: CT

Post by Greybeard »

Well, JC Whitney was the first place I looked and that tip is too long plus I've seen their chrome before. :roll: Thanks anyway.

Necking down from 2" is a viable option but if it wasn't necessary...

I'd really like to find stainless but we know about beggars and chosing.

Fuel mileage? Please don't think me cavalier or blase but that's not high on my list with the riding I do.

So, maybe a 2" tube and a chunk of .125" wall to make a sleeve then?

I just thought I'd here of someplace I totally overlooked.

Thanks very much anyway!
Greybeard
Basic User
Posts: 86
Joined: Mon Jan 02, 2006 12:01 pm
Donating Member #: 0
Location: CT

Post by Greybeard »

R4R&R wrote:Here is the link:
http://gmocart2.gmotion.com/store/merch ... =supergear

That is for a 3/4" x 9" turndown exhaust tip - chrome. I think it came to $9.00 shipped!
AHH! You slipped that in while I was typing !
Cool, thank you!
DJ Downunder
Honorary Lifer
Posts: 4776
Joined: Sun Mar 20, 2005 3:26 pm
Donating Member #: 0
Location: Melbourne

Post by DJ Downunder »

My latest tip is a short piece of 2" stainless with a 45 deg bend..and I found that by cutting off a 1" piece off the end..and cutting a 1/4" piece out of the 1" piece and squeezing it together..it was a perfect fit inside the 2" pipe to fit the cat.

DJ
Tripton
Basic User
Posts: 161
Joined: Sun Sep 11, 2005 3:04 pm

Post by Tripton »

Wouldn't happen to still have that Staintune collector box you took off do you??
BigC
Basic User
Posts: 150
Joined: Wed Sep 20, 2006 7:59 pm
Donating Member #: 0
Location: Kansas City

Post by BigC »

I just did this mod and took some pic's....WARNING: they're big:

http://www.bigczone.com/exhaust1.jpg
http://www.bigczone.com/exhaust2.jpg
http://www.bigczone.com/exhaust3.jpg
http://www.bigczone.com/exhaust4.jpg

The adapter I used fit over the cat pipe and inside the 2.25" tip I bought but not very well. I had to use a hacksaw and cut some slots on both sides of the adapter to let it flex enough to fit the pipes. Even then it was an extremely tight fit. Sorry I didn't take pics of that part but I wasn't sure whether things were going to work out :oops: The tip is 9" long and fires way below the hard bags. Obviously I used the stock chrome cover but I did have an issue with the clamp not tightening down enough. I had some old harley pipes laying around and just cut a section of that for a shim to get the stock clamp to funtion. I think I'll fall off the bike before it does :P Cost was around $6.50 :D I haven't had a chance to ride it yet as the weather sux here right now. I fired it up for a minute or so and thought it had a deeper growl to it. Time will tell whether it stays on or not ;)
'04 R1150R
DJ Downunder
Honorary Lifer
Posts: 4776
Joined: Sun Mar 20, 2005 3:26 pm
Donating Member #: 0
Location: Melbourne

Post by DJ Downunder »

Nice job Brent...here's a few more pics of mine...you might need to angle the tip away slightly from your wheel..see how you go.

I found when you get a little water (condensation) spitting from the exhaust I got little specks on the side of my wheel..nothing that can't be just wiped off.

DJ

http://members.optusnet.com.au/~djp1/mypic2886.jpg

http://members.optusnet.com.au/~djp1/mypic2887.jpg

http://members.optusnet.com.au/~djp1/mypic2888.jpg
BigC
Basic User
Posts: 150
Joined: Wed Sep 20, 2006 7:59 pm
Donating Member #: 0
Location: Kansas City

Post by BigC »

Ahhh, thanks for the tip DJ.... I didn't even think about the condensation :roll: that's easy enough to fix though ;)

edit....I rotated it about 10 degree's from where it was. It may not be rotated quite as far as yours but still looked to me to be firing fully away from the wheel :)
'04 R1150R
Post Reply