| Author | Message | ||
     Hugie03flhr |
I was told my 02 M2 has the same exact carb that is run on the big twins and that I can use almost any air filter set up that is used on the big twins. Is this true??? I always thought the big twins ran a 42mm and buells ran a 40mm carb. My first buell THANKS! | ||
| Jayvee |
Well, not an authorative answer, but I notice almost all the air filter setups like the Arlen Ness Big Sucker, etc, almost always specify a different kit for Big Twins, than for Sportster/Buells. I would guess it's more likely that anything that fits up to 2003 Sportsters would fit the carbureted buells. But this is based on studying catalogs, not from direct experience. | ||
| Aesquire |
The mounting is a bit different on big twins than Sportster, but the real issue is leg clearance. Buell specific air boxes have the carb offset for clearance. That's a personal matter. Your body & riding style. I have no issues with the stock "breadbox" & knee. The Race carbon fiber air cleaner taps my knee if I slide forward under heavy braking. Small round ones work for me too, but don't flow as well. | ||
| Mick |
Buells do have 40mm carbs, sportster filters fit, mates got one on his. | ||
| Jackbequick |
The knees and frames are the major issues. Almost all the specifics as far as jetting and the like for the EVO with the CV-40 can be applied to the M2. This site is a good example, I used the specifics and tuning info there when I tweaked the CV-40 on my M2: http://www.nightrider.com/biketech/hd_cv_mods.htm# slide_detail The CV-40 is a good carb. Going to a Mikuni 42 is not going to make a big difference over a well tuned CV-40 on a near stock or Stage I engine. You have to have some better heads, cams, and other stuff going to make a carb upgrade worth the trouble. Here is a dyno result that shows that a Mikuni HSR-42 only produced a 1.5 HP gain on a stock 1340cc EVO. http://www.nightrider.com/biketech/cv_power.htm Jack (Message edited by jackbequick on April 04, 2008) | ||
| Hugie03flhr |
Thanks everyone! So I have a CV40 SPORTSTER CARB. This means I can order a round airclean or an S&S cleaner for a Sporty and it should fit the carb I have...RIGHT? | ||
| Djkaplan |
It will fit the bike, but may not fit a rider. If your knee can take it, then yeah, it will work. It really was an issue I could not live with... even with a Buell specific offset hamcan. | ||
| Hugie03flhr |
You guys have me thinking. I stand 6'2" so my knee is a concern. I saw a post where the stock bread box is opened up to accept the newer style filter. Is it worth the effort?  | ||
| Jayvee |
I'm 6'2" and that's why I went with the Force-type on my M2. The oval cover was too noticable by my knee, sold it. Anything to get rid of the bread box is worth it. I think I would run an open carb, before keeping that thing, to me it's just hideous. | ||
| Captainkirk |
I'm 5'11" and my knee hits the CF race cleaner, enough to be terminally annoying but that's about it. I couldn't imagine being any taller and being able to tolerate it. | ||
| Torquemonster |
ditto...I cant wait to get a forcewinder and ditch this hamcan. | ||
| Captainkirk |
The CV-40 is a good carb. Going to a Mikuni 42 is not going to make a big difference over a well tuned CV-40 on a near stock or Stage I engine. You have to have some better heads, cams, and other stuff going to make a carb upgrade worth the trouble. You are correct on these issues, but the one thing you forgot to mention is that the HSR is so much more tuneable in every way than the stock CV40, plus the fact that by the time you've purchased a Thunderslide and Yost power tube, you could've bought a new HSR.} | ||
| Djkaplan |
The much crisper throttle response of the Mikuni flatslide is benefit enough for a stock application, especially if you really row the gearbox in the twisties. The Keihin 'cough' has ruined more than a few downshifts for me. |
