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Hey Redcon, I just purchased the same EXACT bike. I'm having airbox issues too, mainly because I can't figure out how to replace the filters (or if that's even an option?). Anyway, I'm looking to upgrade to K&N pods, and I'm wondering if you found the magic combination of jets to keep...

Actually - "Worst CB 650 Ever" I think you may have hit upon the issue a few posts ago - when you said I'm running out of fuel when it "coughs" out... One thing I did was add a fuel filter between the petcock and the carb. Once the tank is in position, there is very little clearance between...

Would anyone suggest that I shim the needles on the two inside carbs, instead of increasing the main jet size? Currently I'm running 102 mains on all carbs. If I were to raise the jet size for the middle two carbs, how big of a jump should I go with - 105s? 110s? Thanks Matt

Thanks for the advice everyone. First of all - I am using emgos, so that's probably my first mistake. Secondly - I had to extend the boots on the two inner carb intakes to clear the choke, otherwise the pods would have gotten in the way and it would not be able to move. So it sounds like...

I recently added pod air filters to my 1980 Honda CB 650, with stock Keihin PD50 carbs. I increased the jet size, and it took a good bit of trial and error to get it right. I'm running 42 slows and 102 mains (stock mains are 90). I had gone as high as 120 on the mains, but that was way too...

I actually haven't changed the oil since last season. I was planning to put some slightly thicker oil in this time to see if it has a harder time getting past the pistons (if that is indeed the problem). The oil levels are right - definitely not overfilled. Could this be a product of old oil...

I recently installed pod air filters in place of the stock air box assembly. This required new main and slow jets as well. I'm also running the valve cover breather hose to a breather filter, instead of the airbox where it used to go. When I first started the bike after adding the new pods...

My 1992 Yamaha XJ600 (Seca II) was not firing on all cylinders - when I would start her up, the left muffler was cold, and it was obviously much weaker. Spark plugs 1 and 4 (from coil 1) do not spark. I bought new plugs and still no spark. Should I get a new coil?

I've been looking all over and haven't found a good source for 43-46mm velocity stacks for my Honda CB 650. I was going to go with pod filters, but from what I read, the cb650 doesn't handle pods very well, but does great with velo stacks. It just appears that the specific size I need is...

Awesome - thanks. Wow - Chin On The Tank is excellent - thanks for the rec.

I have a 1980 Honda CB 650 that I'm in the process of turning into a cafe racer. I'd like to replace the airbox with pod filters, and I'm not sure how to find the appropriate main jets to purchase as well. Any advice? Everything on it is currently stock.

After charging my battery overnight, and making sure it is fully charged and ready to go - I'll ride for no more than 20 minutes, when the bike begins to sputter and turn off intermittently. When I check the battery, it's dead. I'm not sure how I can tell if it is a rectifier issue, or a...

Ok thanks, I'll run some tests and see what I come out with. Also, the idle is all over the place. By adjusting the idle screw, I've gotten it to remain at around 2000 rpms, but it'll slowly fall, until when it gets to around 1000rpms it'll just die. I have to keep revving it at stop-lights so...

I have a 1980 Honda CB 650, and the battery is fairly new, but it does not hold a charge. The bike starts up great after I leave the battery on a trickle-charger over night, but after riding for a while, it'll be completely dead. I'm guessing this is an alternator issue, and I just wanted to...