1970 Honda CB500 0-60 MPH Test! Carburetor Re-jetting

In this video i put some leaner main jets (#120) in my 1970 Honda CB500 carburetors because I suspected that the jets I had previously installed (#130) made the bike run too rich. The old #130 jets were definitely too big for this bike, they made the engine really boggy and did not accelerate fast, but now it is running like a top!!! Stay tuned for more episodes!
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Song: DJ Williams - 69 Bronco

[@theozman38]

You need to balance the carbs. A good backyard way is to make sure the butterflies are equally at the same openings. Use a small piece of wire and put it under the butterfly on all of them and adjust them. It takes a slight touch and a few times to get the perfect. The wire is to get a fine adjustment. And then find a airflow balancer where you adjust the needles. Good video goldguy. I like when you feel you’ve done something awesome. Wooooo hoooooo !!! 🤣🤣😎🤣

[@DieselRamcharger]

you can make carb sticks with aquarium tubing and a yard stick. cost you about 2 bucks. its real name is a manometer.

[@johnmfjw]

@@DieselRamcharger Also a 1/8 drill bit.

[@esurcylimaf4335]

Still miss my old CB500/4, I found it was a great handling bike and if you gave it heaps through the gears it was fast...very fast.Don't be afraid to rev it out as they can handle hard riding. I had many races against bigger cc bikes and rarely lost ,mainly because of the awesome handling of the Honda .Keep riding mate,Cheers from Australia.

[@MarkJames61]

Patina, patina GG. Tank is priceless as is.

[@bananpower8285]

Do you ever have much gas in the tank, when you test ride? 😂😂 - No.

[@SaniveK_]

See... @4:25 THIS is why i don't skip ahead thru these videos. This guy is GOLD!

[@jamesgarnsey7581]

Good job man looks like you’re having fun with it and congratulations on the job

[@herbertwerner2287]

I had a 1972 Honda CB 350 red and black, your 500 seems like a beefed up version of the 350, had it for many years then sold it. I always thought they handled well. Seeing your 500 reminded me of the way the 350 would handle. Love the sound of your bike.

[@psychologixselfmastery]

I was riding pillion one day with my friend on his 1976 CB 500 when a guy on an RD350Lc wanted a race. 0 to 40mph the LC was leading. 40 to 80mph we were neck and neck. 80 to 100mph we were pulling away from him and he kept on wagging his head in disbelief. A mid 7os CB with two guys with overcoat and rubber wellies on pissing all over a guy with dayglo leather sports jacket, cool helmet snd a tricked out LC! Nobody talks about CB 500s snd yet the LC is now an icon. I'm not hating on the LC I even owned a YPVS for a while. Although the RD was great fun, it was not faster than the 500cc inline 4's of the day. I love RD's but we should not forget about the many fun inline 4's of the 70's and 8o's

[@CZ350tuner]

Chances are the bike's carbs are still set up for leaded gasoline. Running on modern weaker & less potent unleaded gasoline throws all those settings out of the window as it combusts differently, especially if contaminated with ethanol. Also the non-standard WTF exhaust system doesn't help. I'm presuming that you've balanced / synchronised the carbs too.

[@bobdobalina779]

Leaded or not, this bike was probably set up for low or mid grade fuel from the factory anyway. Like other people said, the carb sync could be off, and those pod filters aren't helping him. With that said, finding an original air box can be difficult for these old bikes, especially because all the cafe racer kids throw them out all the time. My CB750 had the original box and it ran like a top, my 650 nighthawk had pods and it ran noticeably poorer at certain rpms.

[@markangelooyardo3327]

Gold guy is back

[@l0ner1der]

I started watching your videos on the cb750 cafe racer last week, now I'm watching this one and all of a sudden you're older 😁. Great videos and music though, love it 👍

[@DeathtrapCult]

Synch the carbs! we have been saying this for the last 4 videos

[@patches350]

Yes, yes...….. synchronize the carburetors...…

[@GoldGuyRides]

I am going to do this soon

[@jackrabbit7389]

4 little vacuum guages and you can sync them yourself

[@jackrabbit7389]

Don’t use superglue 🤦‍♂️

[@asoganrungasamy2418]

Well done the bike is quick for a old school bike

[@ughievox2513]

Bravo Brother! Happy to see fellow restorers keeping them on the road. So many neglect proper jetting, fuel bowl level and synchro tuning of the 4 mikuni carbs. I have a '73 cb500f 18k miles & a '72 cb350f with 3k miles still going strong. Tips: when on sale, pickup 4 iridium spark plugs. They give a little extra complete burn. Add MMO to fuel to keep carb clean. Use a fully synthetic Jaso MA ( non moly) rated oil such as QuickSiver 10w-40 motorcycle or a Shell Rotella t6 5w-40 for your colder climate. They have sufficient zinc in it and smooths out the wet clutch shifts too.

[@RickJamesx112]

For the record to make you feel better, I have a 81 hondamatic CM400A and it is just as hard to start up cold. Nothing wrong with her, just the older Hondas were VERY cold natured.

[@Oneanto]

Watching your videos on this bike has really helped me with my 81 CB650 custom I’m putting together hopefully I get it running tonight

[@Oneanto]

Viking Raiders time ran out last night so today I will see if it comes to life I have to finish putting the carbs on then the gas tank and see if she springs to life the person who opened the engine before stripped multiple bolts everywhere sadly

[@Oneanto]

If anyone was curious it runs now better than ever

[@payton5759]

From what I learned from a friend of mine, super glue deteriorates rubber. You may want to keep an eye on that bowl gasket. But, this is a great video update on a great bike!

[@JohnSuchman]

That look at 2:32 - 2:41 ha been there. Good stuff, man. Keep it coming

[@reggiechin230]

Great job getting that CB500 back to life. It would be interesting to see what other improvements you've made since May 2020.

[@paddrivers]

I think candy red would look killer cool😎 I would like to see you fix the tachometer and head lamp ....just a general tidy up & fix everything that doesn't work 👍

[@SORMC_GHOST]

Love the content brother, can't wait to see a ride video with the tag on it. I'm building a CB/CL350. Looked super fun riding that bike! Be safe.

[@GersonMontero666]

great bike < awesome place , nice job

[@nladyman]

Loved the video man, I'd say give it a fresh red paint but maybe a pearlescent or metallic bright red!

[@stephenmbiyu266]

I thought I saw some sparks after 17:19 just above the triple clamps.

[@mikefunaro6913]

Stumbled on this channel from the cb750 to school video. Absolutely mind-blowing when I realized you were going to my school lmao. You graduated a few years before me, I was wondering who it was that rode the cool hogs to school. Lol If you're still in the area and wanna ride some time let me know, you seem like a cool dude 🤘

[@enduridou]

6:01 PURPLE POWER!! Some OG Stuff😎

[@lbdrummer3]

Always dig your videos, keep it up! Can't wait to see how much better this runs after the carbs are synced.

[@wouternijenhuis3327]

I would check the collor of your sparkplugs. After een drive in high rpm ofcourse

[@xTHATSFIVEx]

She sounds like she’s running great!

[@jltrack]

Adjusting the needle height is the first step when leaning and richening the mixture. You don’t have to change out the jets just yet

[@spencerbush7760]

Now that you found the main jet setting lean or lower the needle. After that you’ll probably need to richen or go up a size on the pilot jet. I like using a colortune for finding my air fuel mixture on air fuel mix screws and low throttle. Run the bike at 1/4 throttle and cut it off then read the plugs and it tells you the rich or lean condition of pilot jet. Doing the same at full throttle is main jets and about halfway is your needle jet. There is other ways to detect the lean rich conditions; such as seat of the pants, rev dropping too fast or remaining high, stubbles and bogs, but you have to judge between what throttle position you are in.

[@The9meister]

Hello, there is some good advise in the comments on how to set up carburettors, first is balance slides with a piece of wire under them, then you need to make sure float levels are correct, too high will be rich, too low will be lean, it is not all about jetting, make sure you have no air, or fuel line restriction, and at the end of a ride, check spark plugs, good luck. 😉

[@tonysworksMGB]

Im not exactly sure what your going to make of the bike (keep stock, cafe, scrambler etc.) but i think a glossy honda red, like the type R valve cover would look pretty sick

[@ramertv6321]

In case you ever have the problem with the gaskets not fitting. Stretch them out till they are too big. Then take some grease and rub it on the gasket while putting it in. Then wipe the grease off when your done

[@AddRoc52]

A just a thought housabout finding a harley to rebuild maybe a sporster or something. I think it would be really cool. Never owned one Yet .

[@trevorjameson3213]

I've done that. I bought an '01 Sportster 883 that had been sitting in a shed for 12 years. Dirty, rotted fuel line, rotted tires, dead battery, clogged up carb. Paid 1500 for it. The bike was all original and somewhat high mileage at 40k. I cleaned it up, replaced everything that needed replacing. Then tore down the engine and converted it to a 1250cc. Installed Andrews N4 cams, Mikuni pumper carb, better air cleaner, tuned pipes. Replaced stock ignition with aftermarket flyweight type electronic ignition. Installed Barnett Clutch with heavier springs. Removed belt drive and replaced with 530 chain drive. Had the 883 heads redone and new valves and springs. The bike is an absolute BEAST now! Since I retained the lower 883 gearing, this thing gets to 100mph very quickly. Due to the cams, power starts building hard at 3500rpm and really comes on the cams around 5000rpm. The pull is insane, hard to hang onto it under full throttle. Love it! You can find an old Evo sportster pretty cheap if you wanted to get one and build it up. They are built like a tank too, very tough bikes.

[@larryfox4915]

Pull all four spark plugs and look at the color of the deposits on the electrodes. Tan is good, white is lean and black is rich. I'm guessing you will find at least two that are darker. Order a carb synchronizer tool and study how to use it. Balance the carburetors BEFORE you make any more jetting changes. Good work in getting that machine running!

[@nostrem82]

Nice you're getting pretty good...if you're not wrenching you're not riding 🤘

[@Marco-qe5zw]

Hey brother, how did you go about getting a title for this? i also live in pa.

[@mikeymike3240]

Why don’t you just get the standard air box and fit that, after all, that’s what it is designed to run with.

[@jamesbailey3821]

Because they're crap, try find one!

[@James_Sovereign]

@@jamesbailey3821 crap? They work far better than pods. Everyone seems to think pods are the way to go because "they're used on race bikes" (insert eye roll). Race bikes are predominantly run at wide open throttle, road bikes are not. Get the standard air box and you'll have a bike that actually runs correctly.

[@sea_bass21]

Now I had problems with crap batteries. I ordered one on eBay and I will always stick with that brand. WPS Firepower batteries are legit the best for only being a tad more than the cheapest ones.

[@mrbeast6005]

Cool video

[@adrianbegbie1556]

Yeah man.. bikes going good... thanks for sharing.. 👍

[@sethfricke616]

U should keep the bike. Try making it all original and go on ride vlogs

[@kevinwilson8039]

That things awesome! Where’s your CB750 cafe racer?

[@BasicPoke]

YES! More CB750. You better still have it. Sync the 500 carbs. Don't glue in fuel gaskets.

[@BrokenSmokinSpokes]

Now reinstall the air box and see how long it takes to get the carbs off properly lol. Your first step should have been removing the fuel lines and tank...Who tries to work on the carbs with the tank in the way? lol. Also if the airbox is there, you most likely could just go back to the stock jetting of #100's for the mains and it would be a lot better. Don't get me wrong though, I'm not one of those air box snobs. I just feel most people that arn't too experienced with SOHC4's should get them going in their stock configuration first....then go from there. Good job none the less my dude, nice to see more people around my age doing this stuff. Btw that 500 is still super slow compared to how it should be hah... Lowering your needles by 1 clip might clear up that super rich startup / not liking choke, and also make it way faster...( I mean to raise the clip up 1 notch, thus lowering the needles...anyone that has messed this stuff should know what i mean though)...

[@jonjones6749]

The weather was different. You have to consider it. Sunny first time riding it and very overcast the second.

[@danielwaggener7818]

Goldguy I got a rx50 just like what you worked on and mine is not running spark is good you will is good air is good I think I might have to thick of foam on there but that is what a shop told me to put on so I have no idea what is stopping this bike from running I just had my cylinder reboard a couple months ago so I don't know what it could be preventing it from running of u cood help that would be great

[@notamotorbikemechanic]

Hmm not sure I would have super glued that rubber gasket

[@jackrabbit7389]

Them pod filters were probably leaning you out if you had stock keys in it before

[@jeremysmith8838]

Could you do a walk around of all your bikes in a video that would be cool to see!

[@lucasrustt]

4to1 exhaust please

[@cafemeceebeet3229]

@15:01 LMFAO that made my morning haha.

[@daz72dan-.-]

if u find out whats draining current can u make a vid on it think im having similar issure but on new cb250

[@jerryking1434]

Disconnect the positive from your battery...hook a voltage meter between the positive of the battery and the positive cable ...if your meter jumps up to battery voltage ...youve got a drain.or a load on your system...pull one fuse at a time till the meter drops back down...then check all the wiring and parts on that system.. GOOD luck...

[@itfc3]

you should do a carb synk you can make them just make sure you use glass bottles as its better than the tube one.

[@nostrem82]

Tank colour you should do a metallic English racing green

[@danielwaggener7818]

Also I have the same problem that you did with your gas tank it's just I lined mine using the exact same method that you did but my liner Has Broken if you could advise me on what to do next that great as well

[@845sSuperman]

Maybe it wasn't getting good spark and the P.O. put bigger jets in because he thought it was running weak?

[@claudiopelegrineti5838]

Há 15 dias tentando afinar a minha velha CB 500 1972. Cada carburador precisa ser tratado de forma ligeiramente diferente, a altura da bóia, o parafuso da mistura, nada é exato em uma motocicleta com 50 anos. A cor de cada vela deve ser observada com atenção, a temperatura dos canos, é um verdadeiro quebra-cabeças.

[@troyjon9]

I'm wondering how tall you is cause the bike don't look small, im 6'2 and been looking for a honda cb550.

[@randypullman1155]

2k primer, silver, fat silver metal flake, lollipop red candy. My guess is it boggs because the compression is low. Eg compression ck the yz450 and compare the numbers. Great vid man.

[@tigermoth3194]

Metallic GOLD ;)

[@thecoyotehunter9989]

Awesome job on getting it running the way you want it. What are you running in it for gas Regular or hightest

[@wemel007]

and how about an original color? the candy jade green with blank tank sides? or the sunrise orange?

[@ronniecurnutt4309]

Purple is good bro

[@roderickmoyer9851]

Did you finish the bike yet??? You have not showed any new videos.

[@aro7198]

Cool, if i get bored with my xj700x im gonna buy cb500

[@Jonj57]

Use something like silicon or even some water resistant grease as a temporary glue for the carb bowl gaskets. Either one will work fine and wont potentially ruin the gasket when you have to peel it out next time.

[@Veryfastslowcar66]

your points gap was smaller than spec before adjustments, it would have been advancing the timing a little giving the bike more poke and being able to burn the fuel more efficiently

[@heatmoon]

I'm sorry but I'm pretty sure I hear valve noise in the after video and not the first. Rember this is not a revvy 4, its an inline 2, take advantage of the low end power. I have a Honda CX500, which is a far superior bike but its a little ripper around town. Keep on keeping on, I always like to see people that still give a crap about a bike most guys wouldn't even think of riding. Its all about getting out there on 2 wheels, and I say ride something different.

[@stephen4600]

Personally I'd have gone for 110 mains , but it's sounding good 👍

[@wemel007]

please fix the rpm meter, I'd like to see it moving :-p great work on the bike! keep it going :-)

[@krmoto5158]

Paint it fluorescent green👍😁

[@Jaysqualityparts]

Did you stick with 42 slow jet

[@raumiosveri9598]

I liked more the music of your first videos the style retro, swing, funky jazz soul

[@clannishkobra8965]

Hey are you located in Minnesota?

[@Veryfastslowcar66]

also take off that silly bucket headlight shroud with no headlight lol, only creating more wind resistance

[@johnsn10]

Great videos. What state are you in?

[@n2vxc]

the jetting still sounds off, you can hear the carbs just gasping. keep working but its improving. even the 500 should be much snappier than that

[@pr-jj6nc]

Get a cheap carb syncing tool, that will fix your carb issues. Try repainting the tank the same color!

[@Ikelutgring97]

Inline fuel filter would fix the bogging down

[@jerryking1434]

This bike is suffering from the same symptoms as your GS 850 ...youve got a drain or a load on your electrical system.. What is your battery charging at ..at various rpms .. You've got a parasitic drain on your electrical system.. Disconnect your positive cable from the system..put a volt meter between the battery positive and the battery cable ...should not read battery voltage ..unplug your fuses one at a time ..when meter drops down..thats your system where to start looking for your draw .. Good luck...

[@joyrebel8201]

Paint the tank cobalt blue

[@mikebaird3867]

It wouldn't be a gold guy test run if you didn't have much gas in the tank , and I think it would be cool to go olive green and black everything out

[@quinnwarman5139]

Try some new spark plugs before messing with it again and see how it goes keep the factory colour just clear coat it

[@Veryfastslowcar66]

and yes drop the needles right down as far as theyl go i think youl find a big improvment

[@cedre2274]

Definitively the same red.

[@redlineresurrections4117]

OMG 120 size jets???? That would literally be 20% more fuel than stock which is way too much and I have never once ever had to go above a 115. But I'm guessing you still have not seated down those carbs all the way like all of your other videos so you have a very large air leak

[@moe6796]

2... days... later... hahahaha

[@valga1200]

Are you gona cafe racer the shit oout of this thing or keep it like that ?

[@axelsnipergarage3139]

105 likes 0 dislikes we goin good bois!!!

[@mxfool1508]

Battery was dead as a dodo 😄

[@eddieg849]

What happened to this guy? It's like he vanished he was about to be huge in the KZbin world

[@GoldGuyRides]

I got a full time job and bought a house that needed major renovations. I will return to youtube soon.

[@eddieg849]

@@GoldGuyRides 😁

[@atvgirl26buildz25]

The super glue won’t hold very long when the motor heats up it will disintegrate and potentially get into the motor

[@aidzzzz420]

If it’s 70 one day then 30 then next it’s Michigan

[@farmoboy83]

over the years average cars got a lot faster and average bikes a lot slower...

[@cambo1200]

Paint it Cyan.

[@user-gdxt-7399]

5:41 you shoudn't be allowed to handle sharp knives, what a mess. Also, in many carbs the gaskets are originally round, they flatten with use.

[@ThePlanBPill]

Enrichen lmao