Just thought I would put this out there. I have bought a half of dozen parts,most recently a couple of intake manifolds,one two piece 17 degree turnout and a one piece eighteen degree turnout from a guy that goes by Joe-Wiseguy .Not only is the workmanship very nice but when you spend a hundred dollars with the guy he responds like you bought out his whole inventory. It is a pleasure to do business with someone like this..
Post by weaselbeak on Apr 17, 2011 22:37:15 GMT -5
I am currently working on making a 2 into 1 intake for my project. If I don't get it to work decent, I'll be talking to Joe. His stuff looks real nice. He's on e-bay with several styles, but none that dead center the single carb straight behind the cylinders like I'm trying to do.
Educate me... why are the single carb conversions desirable? The obvious reasons would be one less carb to rebuild/tune and no synchronizing. What are the other benefits?
The a reference point that comes to mind are the original triumph tiger and bonneville. Essentially the same engine; tiger had a single carb... bonneville had two. The bonneville was considered the top street performance model, while a lot of the tigers were used as desert racers... was the advantage all about simplicity in a desert race where you wanted to be able to fix or get your bike running in the middle of nowhere?
My stock Yamaha SRX250 street bike went the opposite direction... one cylinder; two carbs... YDIS = Yam. dual intake system.
Joe does seem like a helpful and conscientious guy. I didn't end up buying any parts (decided to build my own), but he took the time to answer questions, regardless.
What is the advantage of 1 carb set up Can I run one 35mm carb and get equal or greater performance than that of running 2 carbs ? PS. I absolutely love the look of one carb so it's not going to be hard to persuade me towards one carb. I just want to know that I'm not going to loose any performance by running one.
The major consideration for the XS650 is that due to the backbone of the stock frame, it's not possible to mount a single carb with manifold runners with equal length, appropriate length, or wide radius bends. Bottom line: due to overlength, uneven runners and close radius bends that impede flow, you're going to lose a lot more performance with a 1-carb XS650 than British single carb twins gave up, and the issues will involve more than peak power. Some guys aren't concerned about intake runners that are so long that fuel condenses out in them or about a carburetor that hangs out in the breeze, and some of them will deny that there are problems.
Last Edit: Nov 29, 2015 21:31:18 GMT -5 by grizld1
I have often thought that with the willingness some of the people here have for cutting and welding the frames on our 650's. Why hasn't any one cut out the section of frame that blocks the single carb, and welded in a chunk of maybe 4" to 6" pipe to allow the carb to pass thru? This was done on some brit bikes in the 60's so I know it could be done. Anyone up for trying it?
r80rt: :)This is a splendid write up, THANK YOU!!!!
Dec 26, 2015 16:54:05 GMT -5
mashermoto: What the what is this shoutbox for? Or should I shout, WHAT THE WHAT IS THIS SHOUTBOX FOR!
May 12, 2016 22:22:21 GMT -5
motormike: Good Day ...just a FYI.. Wild Cat is this Labor Day weekend. Still go'n on. A few 650's still make the scene. Various rides at different skill levels each day.. awards dinner sunday eve. BS in the park'n lot after dinner.
Aug 23, 2016 7:57:01 GMT -5
lsettle: First post in over 6 years!
Aug 28, 2016 19:45:17 GMT -5
kardon: Wow quiet here, where did they all go.
Oct 7, 2016 2:18:13 GMT -5
gggGary: XS650.com LOL
Feb 16, 2017 20:49:02 GMT -5
buell88: Anybody have any idea who built the xs650 tracker used in the Draggin Jeans Ad on Pipeburn?
May 16, 2017 16:24:09 GMT -5
joshua: The regulator/rectifier unit I got from Mikes PMA has closer hole spacing than original. Are we supposed to mill the holes to fit?
Jun 7, 2017 19:25:58 GMT -5
joshua: My bad. I found the bracket they supplied to mount the rectifier/regulator... Uh oh. How is this meant to work? Which way is it meant to mount? Looks like I have to use some spacers or something. Good instructions would be nice.
Jun 7, 2017 22:09:52 GMT -5
craig8johnson: Not sure if this is the right spot or not but oh well...
Jul 11, 2017 18:04:15 GMT -5
craig8johnson: I'm checking the charging system. I'm afraid I might have fried the last battery. With the solid state regulator (after market) what should it be charging at. The book says, I think, 15 volts. I'm hitting 17 when revved. Is that too high?
Jul 11, 2017 18:06:19 GMT -5
gggGary: Yes 17 volts is too high, about 14 volts is max, sounds like you don't have the right regulator or it's wired wrong.
Jul 13, 2017 6:54:33 GMT -5
dean: Just saying Hello, new member who is going to fix up a 79 XS650 that has seen its better days. I will definitely have lots of questions coming up.
Jun 23, 2018 16:45:32 GMT -5
tt650: Trying to breathe life into a 1980 that's been stored (indoors) for 25 yrs. Air filters are dry rotted. Have cleaned carbs but she only runs briefly on choke then stops. Need jet setting info and other ideas that might help her idle and rev.
Jul 3, 2018 19:15:19 GMT -5
trix13: Hey everyone! New to the forum and am fighting those gremlins!! New charging system, ignition switch, coil and fuse box. Resistance is higher than normal on the ignition pick up so I'm trying to find one. No such luck yet.
Aug 16, 2018 8:50:48 GMT -5
trix13: Also, even though all of my connections are clean, I cannot seem to find out why , when at higher rpms, I hit the signals and the rpms pulse with the signals...hahah. same with the brake light. I appreciate all input!!
Aug 16, 2018 8:55:08 GMT -5
bob99: how do I post a question. I am new to the forum
Jun 6, 2019 10:52:10 GMT -5
adlpc: Hello all! Been enjoying your edifying posts and discussions - and as a fan of the XS650 since my early teenage years happy that I now own a 1980 Special which I plan to turn into a vintage half faired racer. Thank you all for being here!
Oct 1, 2019 0:58:56 GMT -5
jimothyj: Hello everyone, I just joined & wish would have known about this site in 2014 when I brought my 1974 TX650A back from the grave. I have spent a good deal of $$ and alot of time on it. Just painted it and working on electrical, I will post pics soon,
Apr 10, 2021 2:14:13 GMT -5
louisvan: trix13 - I had a problem with my 1975 SX650. When I got to highway speeds, the engine lost power. The problem was in the connectors. At a certain vibration and the wind pushing on the wiring loom, the connector lost continuity. A bad crimp to the wire.
May 20, 2021 1:19:09 GMT -5