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Gotta 79 honda cb650 that i cant seem to get working right. I wired the bike up and got it running but cylinders 1 and 3 don't appear to be firing. I say this because after running the bike these pipes are cool enough the touch where as the others are very hot. I checked and was getting spark in...

Ive got a pretty substantial tick/slapping noise going on in what sounds like the top/mid engine. Gets louder with acceleration and was there before the engine tear down. I adjusted the valves when rebuilding the top end and installed new exhaust header gaskets as well (maybe ruling out exhaust...

I fixed my leaky carb issue and was finally able to get the bike running for longer than a few seconds. The bike will run on full choke but if i don't keep feathering the throttle the bike will shut off. As soon as i push the choke back in the bike dies. Any ideas? what should i start trouble...

I have a 79 cb650 and I hate the choke set up. I hate putting it on and taking if off if need be. I hate how they always seem to fail in some way and now that Ive changed up the stock handlebar set up there doesn't seem to be a good place to put it. I really like the manual lever at the carbs...

I have a 1979 cb650 and got to the start up phase yesterday after a long build. I used a remote tank and went to start her up when gas started to pour from the carb bleed nipples at the bottom as if the screws were fully open. From the left it was the 1st and 3rd carbs that were leaking I...

So im wiring up a new start/kill switch on my 1979 cb650 and i redid a bit of the wiring so now im not sure how this switch wires up. http://www.thisoldtractor.com/moto_guzzi_tonti_handlebar_switch_-_k_s_12-0203.html This is a link to the switch with a diagram showing which wires do what. This...

If i go from 26 inch mufflers to 17 inch mufflers running a stock intake system will there be a back pressure issue? I have a 1979 cb650 and Ive heard that shortening the mufflers may have this effect. Anybody have experience with this?

I plan on using my stock headers with some after market slip on mufflers to finish them off. My stock mufflers were about 26 inches long. I found some reverse cone slip ons in both 26 inches in length and 17 inches. Will 9 inches be enough to have to re-jet the carbs or will they run similar to...

I think ive decided to chop off the end of my stock mufflers (the previous owner already did the other one) and just putting on some slip ons. The stock headers are in really good shape plus most aftermarket exhaust for a 79 cb650 are either made with crap metal or just way to expensive to...

So I'm down to the exhaust but not sure which direction I want to go. The only options really available that Ive found for a 1979 cb650 were the MAC systems which I haven't heard many good thing about, cheap metal bad chrome etc etc. I do have a pair of headers I got that were chopped at the...

So I'm down to the exhaust but not sure which direction I want to go. The only options really available that Ive found for a 1979 cb650 were the MAC systems which I haven't heard many good thing about, cheap metal bad chrome etc etc. I do have a pair of headers I got that were chopped at the...

I have a questioning concerning a black (maybe power wire) coming from the r/r. Ive been rewiring the bike and everything has been moved around, things removed etc etc. There is a black wire that comes from the ignition (i assume this is power), it goes from the ignition to the fuse block and...

So Ive gotten to the electrical on the build and i have a question. The harness is pretty much custom now and far from stock besides the charging system. The power for the headlight, gauges, and dummy lights (built into the new speedometer gauge) are no longer drawing power through the mess of...

Hey guys, throwing out the line here for some info. Im looking to put a 4 into1 exhaust system on my 1979 honda cb650. The name of the game is weight reduction and simplicity so having that enormous stock air box/mud guards gotta go right? So I was thinking getting rid of the stock air box and...

I have a 1979 honda cb650 with some stock pipes im looking to replace. My question is whether or not i can do a 4-1 swap without re-jetting or any carb work, or is it necessary with a 4-2 to 4-1. As always input is appreciated. Thanks.

I have a 1979 cb650 with some stock pipes im looking to replace. My question is this; I was thinking of putting a 4-1 system on if I dont go back to the original 4-2. Im curious will i have to do some carb work or some re-jetting if I go with a 4-1. Thanks. As always your input is appreciated.

So for my next build id like to work with a sportster 883 2003-2006 as the platform. Really the only thing im interested in keeping would be the frame and the engine everything else would be of my own design or sourcing. So the first order or business would be to level the sportster out. As it...

So im looking for an exhaust. As far as pre-fabs go there really arent that many. Its really only like MAC exhausts. So seeing as the cb650 had the same engine as the 550 is it possible that exhausts between the two bikes are interchangeable? Anybody anybody? All input is appreciated. Thanks

If i take of the stock 4-2s on my 1979 cb650 and replaced it with a 4-1 will i have to re-jet my carbs?

So I've had the idea of scrambler pipes on my 1979 CB650. Obviously this bike never came close to something like that and I'm pretty sure that's not an aftermarket your going to find on ebay. I'm thinking custom here. Has anybody ever seen or heard of a CB650 with a scrambler set up? I'm sure...