Remus Y-piece.

cammy · Post by **cammy** » Sat Dec 10, 2005 4:01 pm

Woz thinkin' of fitting a Remus y-piece to my Rock but my dealer woz not impressed with them, dropping them from their range because of'ill fitting, poor finish & negative help from Remus themselves. Wot do you think of the Remus y-piece fitted to your Rocks? Woz it a good fit, did you have problems with fitting? woz the finish up to par? Interested in your comments...Oh yes, does it fit with the centre stand fitted.

beemerphile · Post by **beemerphile** » Sat Dec 10, 2005 10:45 pm

Quite pleased with mine. Fit and finish were excellent - Lee

Est51 · Post by **Est51** » Sun Dec 11, 2005 4:46 am

No probs with the "Y" piece but both "Riceburner" and I have had probs with the baffle breaking free of its weld in the silencer and falling out, so there are issues with their quality.

Old Crockster · Post by **Old Crockster** » Sun Dec 11, 2005 5:20 am

Have you considered the Bos Perfomance system? I'm very pleased with mine

Guest · Post by **Guest** » Sun Dec 11, 2005 7:29 am

As far as I can find, nobody supplies/distributes the Bos Performance system in Australia. Anyone able to help???

Post by **Pat** » Sun Dec 11, 2005 10:17 am

I had no problems during the 50,000 miles I had one on my bike, off my bike, back on it again, with the factory muffler, a custom muffler, and the SuperTrap that made it's home on the end of it.

Initially I had to struggle with fitting the factory muffler to it, but after I bought a copper based product to paint on the matching surfaces, and a more aggressive pipe clamp, I was good to go.

As I changed out different cans frequently, I discovered that it was a good idea to install everything, take her out for a spin, and tighten the clamps again while everything was still warm.

Would I buy another one again? Likely.
But if I had the money, I would prefer the beautiful chamber CAT' eliminator that Staintune makes. It fills the void left between the kickstand and the bottom of the engine, and may actually work as an expansion chamber to better assist in the scavenging the exhaust.

beemerphile · Post by **beemerphile** » Sun Dec 11, 2005 1:37 pm

Pat wrote:... and may actually work as an expansion chamber to better assist in the scavenging the exhaust.

Expansion chambers are a 2-stroke phenomena designed to increase the volumetric efficiency of the engine by drawing in the inlet charge. They tend to work efficiently in only the narrow RPM band to which they are tuned. That is why you hear old timey 2-stroke racers saying that a bike is "coming on the pipe" when it hits the fat part of the powerband. This is all done with cams and valves on 4-strokes. To get better exhaust scavenging with a 4-stroke requires using a tuned exhaust system. The Y-pipe comes closer to this ideal than does the bulging fake cat from Staintune. At any rate, an "expansion chamber" is not just a big bulge connected to the exhaust port by a couple of feet of uniform cross-sectional exhaust header. A proper expansion chamber has a diverging section where the cross sectional area is increasing, followed by a dwell section where the cross sectional area is constant and large, and a converging section where it eventually ends up at the exhaust tip. The fake cat doesn't have these design elements. I solved the problem of Remus muffler quality by attaching a Staintune muffler to the end of my Remus Y-pipe. I'm a happy camper. - Lee

Post by **Pat** » Sun Dec 11, 2005 8:10 pm

I was repeating a gentleman in Long Beach who is known for his work on Boxer engines. He explained that for lack of a better term, "expansion chamber" was the closest thing he could refer to that might explain why he thought the Staintune could act as a combustion chamber aiding in scavenging and smoothing exhaust pulses.

Frankly I have little idea what he's talking about, but I know the resulting exhaust noise is deeper and sexier via a chamber.... and that's a good thing.

beemerphile · Post by **beemerphile** » Sun Dec 11, 2005 9:02 pm

Pat wrote:Frankly I have little idea what he's talking about, but I know the resulting exhaust noise is deeper and sexier via a chamber.... and that's a good thing.

I would completely agree. My comment was to the mistaken concept of a 4-stroke expansion chamber. You can find them in your local NAPA store right beside the muffler bearings.

Clearly the Staintune chamber's sound is deeper than a cat. The muffling effect of the cat is high enough that lots of folks run just the cat and no muffler. Running just a Staintune chamber would be louder than a Two Brothers noisemaker. What is missing from this discussion is a comparison of the sound of the Staintune muffler with a chamber vs. a y-pipe. I have a friend who sawed a cat in half and emptied it and welded it back together. He got the same effect as a chamber. The Staintune plus y-pipe is plenty deep and sexy.

Post by **Pat** » Mon Dec 12, 2005 12:05 am

Actually........
My buddy was running a chambered Staintune, and I was running a Remus "race" Y-pipe. We both had the same custom carbon fiber cans. His exhaust, though quieter, was deeper and had a characteristic I wish mine had. My resulting exhaust noise sounded more aggressive and snarly.

To speculate which of the two set ups was the better/faster, would be to argue that one bike could do 100 mph at a faster rate than the other bike could do 100 mph........... they're both doing 100 mph, what's to discuss?

OHMYGOD, and DON'T run a CAT' eliminator without a can on the end!!!! It'll sound like sh*t, and burn up your engine! And, you ready for this one? (you don't want to hear this......)
My BEST overall performance was had by running the factory CAT' with a virtually straight through can that had no packing. It gave me my best top-end, afforded me goooood mid-range, and stumbled/surged far less at low-end than with a CAT' eliminator and my Supertrapp (I LOVED that Supertrap though!)

riceburner · Post by **riceburner** » Mon Dec 12, 2005 4:02 am

Est51 wrote:No probs with the "Y" piece but both "Riceburner" and I have had probs with the baffle breaking free of its weld in the silencer and falling out, so there are issues with their quality.

actually it's not a weld - but a cheap pop-rivet.

the baffle WILL stay in if you bolt it in with the supplied bolt and a bit of loctite.

ronnierockster · Post by **ronnierockster** » Mon Dec 12, 2005 6:10 am

No -problems with my Remus set up. Y piece is very close to the right side of engine if I am being picky..Titanium can good and I have a removeable screw in the baffle, to hold it in.. Have had Remus in the past and have been pleased with Quality and fit.. What the Rock realy needs is a two into two system. Now that would sound good.. RR

fnfalman · Post by **fnfalman** » Mon Dec 12, 2005 11:45 am

What quality problem with the Y-pipe? I had it installed at the 600-miles break-in mark with the Remus Revolution can (baffle removed - it's not loud at all) and I'm going on 16,000-miles and nine months later without any problem.

cammy · Post by **cammy** » Mon Dec 12, 2005 4:30 pm

Thanks for the feedback, the main reason I want to fit the y-piece is to eliminate all that heat the cat generates under the tranny, very positive
reply's from all, my local dealer recommended the bos system but it's a little pricey. I'll go for the Remus y-piece with standard can for time being,
but does it fit with centre stand fitted?????

mdouglas · Post by **mdouglas** » Mon Dec 12, 2005 5:49 pm

Yes it does. There's a specific triangle of stainless welded to the side to act as a bump stop for the centre stand.

Here is a picture of one:

http://www.maxmoto.com/remus/pages/REBM ... Y-pipe.htm

riceburner · Post by **riceburner** » Tue Dec 13, 2005 4:01 am

cammy wrote: Woz thinkin' of fitting a Remus y-piece to my Rock but my dealer woz not impressed with them, dropping them from their range because of'ill fitting, poor finish & negative help from Remus themselves. Wot do you think of the Remus y-piece fitted to your Rocks? Woz it a good fit, did you have problems with fitting? woz the finish up to par? Interested in your comments...Oh yes, does it fit with the centre stand fitted.

sorry - I should have read this question first...

I have a Remus Y-piece and Ti Revolution can on my Rockster. The Y-piece is just foolproof - it works, nuff said. The center stand is fine with it (see mdouglas's pic above) and it went on fine (it's been on from new) and doesn't seem to blow at all.

As I said above the baffle on the can itself CAN work loose - but you can work around that.

I would NOT recommend running the OE can with the Y-piece though. Yes it can work and you get the performance boost (mostly midrange and low-down acceleration) without the rorty noise of the can - BUT: The exhaust gases will get trapped in the can (as opposed to in the Remus where they are free to flow out) and the can will get VERY hot which tends to increase the temperature of the gases flowing out of the end of the can. I discovered this after finding a hole burnt in the very tail of my left-sde pannier - NOT from the heat of the can itself - but from the gases flowing past the end of the pannier!!

If you are contemplating using panniers then go with a can as well as the Y-piece. But either way I"d highly recommend the Remus Y-piece.

cammy · Post by **cammy** » Tue Dec 13, 2005 3:41 pm

Thanks all, mdouglas, ta for the photo, did see the y-piece on Nippy Normans site. Riceburner, I think your right, the standard silencer is gonna be rather restrictive, the free'r flowin' Remus would be the answer.Did you have to synic the fuel and reset the tickover when you fitted the system?//

riceburner · Post by **riceburner** » Wed Dec 14, 2005 5:29 am

cammy wrote:Thanks all, mdouglas, ta for the photo, did see the y-piece on Nippy Normans site. Riceburner, I think your right, the standard silencer is gonna be rather restrictive, the free'r flowin' Remus would be the answer.Did you have to synic the fuel and reset the tickover when you fitted the system?//

nope. - but then I had the system fitted at the dealers when I bought the bike new.

My bikes (did the same thing with two of em) DID come WITHOUT the CCP chip installed (I assumed the dealer removed it when they fitted the Remus bits) and it's run absolutley fine for the past 1.9 years (44000 miles).

(I have two totally unused catalysers and one totally unused standard can in the garden shed.... :rolleyes: )

drevil · Post by **drevil** » Wed Jan 18, 2006 11:38 pm

i love the look of the ztechnik titanium best, but i think soundwise it may be too whiney for me. coming from the cruiser world (i still have a vtx1800c) i would like a more deep throaty sound but i don't really care if it's louder or not. my vtx is plenty loud! from reading this and other threads i am guessing the staintune is the deepest sounding due to the chamber. but i'm not thrilled with putting that chrome thing on my nice blacked out rocker. i think my compromise may be the remus genesis carbon fiber model like they have on the bobster or the titanium one. i guess even better would be the staintune cat chamber and the remus pipe. would that work? any suggestions on sound from people who have heard both? anyone in or near md with one of these exhaust systems so i can listen? i intend to listen to the bobster sat.

orbea54 · Post by **orbea54** » Thu Jan 19, 2006 1:22 am

I installed the Remus Y and Ti Revolution can on my Rockster. I also took out the removable baffel which makes it about 15% louder. My bike sounds very deep and very throaty. Not quite as throaty as a V-Twin, but close. The Z-Technik and Staintune that I have heard werenot as low sounding at the Remus. Adding the Staintune cat chamber I think just make it more quiet instead of lower sounding.

I tried to make some audio files, but it was very hard to do as they did not come out very clear.

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