'Revolutionary Mikuni Carb Kit Transforms Honda CB550!' #hondacb550 #cb550 #vintagemotorcycles

It's been a couple of weeks since we did the Mikuni Carb upgrade from Speedmoto. This CB550 is a kick in the pants to ride, This carb upgrade has made the difference.
The jetting on the 550 is Pilot #25, Main #160

Please Like, Comment, and Share. Be sure to Subscribe for future videos, Don't forget to hit the bell icon for notifications.

#vintagemotorcycles
#mikuni
#hondacb550
#speedmotoco
#motorcyclerewind

[davidsnow]

I bought a stock 1975 CB550 last summer. It had 18, 000 original miles, zero rust, and the 4 into 4 exhaust. It ran and rode great until the fall. I barely made it home after a 40 mile ride--- the bike was bogging and stumbling and barely revved to 6 grand. I figured the carbs needed a rebuild. I discovered your video on Murray's Carbs and bought the newer kit with the manifolds that bolt directly to the head. My mechanic installed it this week and I've been riding the bike the last two days. IT IS SO GOOD!!!! The Honda rides like a brand new machine---- throttle response is immediate (even with the minor cable slop) and the bike just wants to rev. I still can't believe it. I really want to thank you for your video. The only problem encountered on the installation of the solid manifolds was that the nuts required clearancing. My guy didn't want to risk grinding on the manifolds so he shaved each nut til they fit. Murray's is a great alternative to rebuilding the stock four Keihins. Thanks again!

[robertmoffitt]

Man I love your video..I can't stop watching it... it's so good 👍

[TouchBud]

haha the trust of that zip-tie/hair tie/ elastic holding your phone is immense ! awesome ride

[FeebleDaddy]

Mine just came in for my cmx450 can't wait to put them on!

[wg]

Sweet, as I watched the vid where you installed the carb kit. Wish there were open roads like this where I live but unfortunately I'm in the big city 😵‍💫

[eduardocbfourgavim]

Muito bom!! Gostei, adoro essas máquinas !! Mas uma solução que somos apaixonados pelas Honda four!

[drakeb]

Just bought a kit from Murray for my cb650 nighthawk. Can’t wait to take her out even though it’s like 30 outside

[treyvader]

If you up your camshaft a bit it will be even better more lift more duration = more power

[GrandFathersCrutch]

This 550 seems to be running great! Are these modern carburators or where did you get them from?

[NumberMyNumber]

Any idea on how these carbs compare to the Murray kit? The intake runners are shorter but the carbs are the same. Its also a $150 difference in price. Thanks!

[WesDimond]

Just completed my swap and your videos were very helpful! I can see why you reacted the way you did... Wow!! It feels like a new bike. The throttle response is incredible and theres a noticeable difference in power (according to my butt dyno). Very happy overall!

Air screws 1.5 turns out
Main 160
Pilot 25

Have you made any adjustments since? I notice a little sputter when revving at low RPMs, but not when there is a load on it. It's smooth throughout the power band and I don't have any cracking or popping.

[ASMCartoons]

Thanks for the video, there's not a lot of info out there for this setup. A couple of questions for you if you have time: Did you have to sync them? What's the procedure for setting the idle if they're not connected? Also, I've heard the choke is tricky because it's two choke levers, is that your experience? Thank you!

[tim.iteland.]

Owned one and did 15000 miles in 2 years in the UK, still miss that feeling . Top speed circa 115mph . But the way it got there was fast . Cam chain sounds noisy . Mine seized & that's what killed it for good .

[lexblok]

Thanks for the video. I made a video myself ones of me accelerating on my CB550K3, with the stock carbs but I don't really see much difference. It is also as fast and going through all gears untill 9500 rpm and back to (i think) a nicer idling (more steady, not the taktaktak - sound) I 'm curiuos if this set is really better than the stock keihins.

[skandix]

Sure the 2 are nice, but I don't think you could beat stock carbs.

[ianbestor]

Had a 78 CB750K from '10-'12 before then it was stolen. Those CB motors always sound like they're running completely unlubed to me, just a real dry sounding cycle. I'd check oil constantly because of the cycle notes.

[jamesa]

I bought vm30 carbs from speed moto co. Had to rejet them for my rebel 450. Had to bump the main jet up to 175 from a 165. I have a 1/4 throttle surge but not sure if that’s from a intake leak at the boots. The boots came with the kit but they are leaking. Not sure if I can even tighten the clamps any tighter. Bike runs good besides being alittle too lean even though I have everything set to be rich. Going to see today if the problem with the surge is the boots or not. It’s easy to rejet but just annoying after the 4th or 5th try at it. Is your bike running lean with these carbs? Do you have color on the spark plugs? The bike idles and revs good at 1/2 turn out of the air screw which is weird. I went to a 27.5 pilot from the 25 they had in. Seems to be okay. I really think I have a vacuum leak though which is throwing off the jetting.

[RustyStator]

What did you end up doing with the vacuum lines that run into the original air box? If I remove the air box I have idea what to do with those

[diegocorral]

PD carbs(550 K3 Originals carbs) are a nightmare, the best option is fit the 069A 550 Four carbs

[G]

So disappointed. You gave us no indication of how good it was. 👀🧐😎😜
Peace

For all those who had a drink every time you heard “SO 😂