Hello fine peoples. I am in the process of designing and personalizing a mc22 and I like the look of the muffler on the 2011 cbr as a replacement as to kind of stick to the CBR originality (CBR family if you will), I know I will have to remove approx 4 inchs from the single pipe after the 4 into 1 join but I am wondering if there would be any gain or benefit by doing as such? I am just after some info and educated opinions on this before I go in and start hacking up a perfectly good set of pipes Any help would be welcomed. Cheers guys
Well, pipes balance exhaust airflow from the engine with back pressure etc. It may affect engine performance, it may not. Usually a slip on improves flow and leans out the fuel/air mixture in the engine causing it to run a little lean. Sometimes it is not significant enough to be a big problem, but it does depend on a few things. If the exhaust is the same sort of size, the main difference is probably in the mounting etc so you'd probably get away with it. Seems like a lot of effort though just to put on a particular exhaust (chopping and changing etc) but if you're up for it why the heck not. More informed advice may come if you get friendly with a dyno shop as I'm sure they do quite a bit of tuning and could tell you from experience what to look out for and if others have done it (and how successfully). There's a lot of people around who make custom exhausts or make them on their own so depending how significant you change from the standard is probably an indication of whether or not you need to get a re-tune afterwards.
I've ran a handful of different setups on the mc22 1991 L so I'll throw in my 2 cents. Recently I just put the brand "hiflo filtro" OEM style filter in with stock carb settings and it has given me the most top end power out of anything I have tried (with a long straight through can *roo racing*). The stock can with that setup improves the low/mid range a little at the cost of the top end. That being said I wouldn't say it's gains you will get more "better feel and response" at the top end if running the same as me. But to your question specifically it is a common opinion that a long can on stock pipe 4 - 1 config will give more top end focus. A 4-2-1 exhaust with a short can gives mid focus. So if your like me and want your top end at it's best I wouldn't cut 4 inches off the pipe. But if you car about looks and don't care so much about power then go nuts, the mc22 pretty much came out of the factory perfect. Steer clear of Chinese air filters or uni filter and use the stock jetting setup or you will be banging your head against the wall. (That's my opinion) #iridium plugs
Hi guys cheers for input , I have lined up the (2011)muffler just as a mock up to see in regards on where it would sit eg mounting points front end of muffler to pipe comparison etc and it is that long that using the original mounting point on the subframe the end that goes onto the mid pipe lines up with the very bottom mount so essentially the mounting points line up but that seems to be where the similarities end. I am aware that the 4 header pipes length bend direction etc make a big contribution to the way the bike runs and had NO intention of cutting into these as I know how important they are. I know it might sound a bit strange but in all honesty when I started to do this bike I wasnt thinking about any power gain as such I was only wanting to make the old girl pop if you will. I see a lot of people go with the TYGA plastics and the big can mufflers or the shorties etc but I wanted to do something that not only complimented the bike but something that not every bloke and their dog had done and wanted to stick to the cbr family hence the idea of using the later model cbr pipe. There is nothing wrong with the original that I have so it was and is not exactly a necessity to replace or change was just thinking of different At the end of all the customizing etc I am going to do a carby balance and tune so I will be making sure that the bike will be running as clean as it should. I have heard very good things about the "Roo Racing" products along with a few other companies as well and cheers for the heads up on the cheaper import filters, and I would like to honestly say that as tempted as what I have been at times I have never skimped when its come to the running products on my bikes eg engine oils, top grade spark plugs, decent coolant, top of line chain lube etc. My cars on the other hands well I have been guilty of skimping at times but well lets face it one wrong move in a car can be fixed or forgiven or even overlooked, one wrong move on a bike you could die so I learned from a very young age to always treat my bikes with care and respect and they will return the favour. At the end of the project my outcome I am hoping to achieve is a CBR that you can see is a CBR but personalised and customized to a point where you could stand there all day still finding new and different things within the build (Lets put it as a Hybrid CBR babyblade if you will ). It will have a streetfighter headlight unit on which came from Portugal that I have been holding onto for sometime now just waiting for the right build to come along and a day or 2 ago I actually for the first time saw the exact same headlight unit on a cbr600 or cbr1000 fighter all in black and my god it looked good and to this day it was only the 2nd time I had seen the exact same unit as I have. At the end of all this spiel and if you are still reading well done and thank you all I can say is that I am not going to destroy a perfectly good running setup for the sake of looks and I am not going to be screwing around with anything that is going to jeopardize the health of the engine. Nothing has been carved in stone bar the colour scheme, and the headlight and the lack of side fairings. And the only reason I have to concrete the colour scheme is because I have already changed from a white to black starting from front (front being white while gradually changing to a very clack rear) to what is now going to be a black, carbon-black,gold theme. And everytime I change the colour scheme I end up buying bits and pieces for it that eventually wont be used due to being indecisive on colour choice lol. By the way this is a hobby/experiment fun build so not doing it for wealth or as a custom show piece (nice if it turns out to be but not what I have set out for), it is purely to see if I can do it, and to see if I can make an already beautiful desinged bike stand out a little more
The stock boat anchor? That thing weighs like 15kg, you will need a counter ballast just to even out the tire wear! <---- at's me on my 2011. When I call it a boat anchor, I really mean it. The damn thing would catch on one truck on the way out of the drive, the other truck on the way in. I swapped it out for the ultra obnoxious LV GP Corsa full stainless system. Never touched a truck with the exhaust after that, but it was embarrassingly loud. She's moved on to a new home since. Need rearsets, full exhaust, or bazaaz fuel controller for a 2011+ cbr250r?
I'm actually pretty keen on this slip on http://tyga-performance.com/site/product_info.php?products_id=3448 but I would only get it if it was quieter than my roo can and has similar effects on performance (potentially gain back some low end) I have contacted the site about it to see if they know. But yeah its cool that your doing something different.
