I Upgraded to Murray Carbs! Are They Worth It? Pt 2.

[@wayne3340]

My brother did a big bore kit on his 1979 GS750 and added a Yoshimura pipe and Mikuni 29mm smoothbores. It was a very fast bike.

[@zsgarage2021]

Oh LORD, a big bore kit alone adds a good amount of power! Plus the yoshi and 29mm makes that thing probably RIP down the road!!!

[@ch-ir8ld]

you are NOT alone. My murrays carb kit came far too rich, and i'm still trying to dial them in. plugs are more black then Westley Snipes

[@zsgarage2021]

That is so frustrating! Definitely not good when your spark plugs are westly snipes dark. Hahahahaha

[@robaker44]

I had the same problem on a xs1100. I doubled the springs on top of the slides. Works fine now.

[@zsgarage2021]

That totally makes sense. Glad they worked out for you!!

[@JohnFoxphotography]

I would try removing cables from carbs, and run bike by operating the throttle by hand, if the revs are still high, then its not the cables, slides could be getting stuck.

[@zsgarage2021]

Definitely could be getting stuck internally. Only thing is I polished the internals. So, idk.

[@GorhamAirsoft]

That’s too bad that didn’t work out for you, i have a set on my 81 CX500 and it is a truly fantastic upgrade

[@zsgarage2021]

Was it pretty much good out of the box? Or did you have to make a couple adjustments?

[@JonShepard-u4r]

I have a set on my 92 cb750 fire's up push on the button and rips down the road on command.

[@nestorfuentescastillo6200]

It's very tiring to try and try, I'm having the same problem and I was thinking of buying those carbs for my triumph but at this point I don't know.

[@zsgarage2021]

It can be extremely frustrating. I totally get that when you have an older motorcycle, you are going to work on it. But, this was too much!

[@nestorfuentescastillo6200]

@@zsgarage2021 I already found carburetors and I am about to order them and the reviews are wonderful, I chose to buy keihin cr special 35mm dual and I have seen very good options for you

[@thisguybuilds]

Cool video I just noticed you’re in CA, where? I’m in CA too also building an 1980 CB750

[@zsgarage2021]

I’m located in the Bay Area. What about you?

[@DavidEscalante-o6e]

I had that high Rev problem to. I took the air pods off and looked in the carbs I noticed that one wasn't seating properly. One was higher than the other. I found that the cable wasn't seating properly in top of the carb. That cable can pull up and if it doesn't seat back down properly it high revs. When cable meats carb it can't do a hard 90°. Has to route up and curve down to frame. Hope it helps.

[@zsgarage2021]

Appreciate it!

[@johnwirk]

Yea slide carbs are funny about that. Old school keihins from back in the day didnt have this issue but the cable was mated to the slide cap and couldn't be removed. These newer slide carbs are so that cables can be changed quickly with a minor draw back, the leak.

[@judybrasky1701]

I bought Murray carbs for my Yamaha maxim. I could not get them to work right after multiple times of trying. I then realized that the outside cylinder were getting most of fuel, and the inside cylinders were getting to much air, and causing a lean condition. I investigated further and found that the carbs are facing the outside cylinders, and not centered equally between the two, and that's why I couldn't get them right, no matter what I did. I hope this helps someone else that can't get theirs to run right.

[@zsgarage2021]

That’s some great knowledge to drop! I appreciate the comment!

[@Meowmii4023]

Do you happen to know what rear peg you are using on your CB750? Mine look very similar but don't stay folded up making it difficult for me to walk my bike.

[@zsgarage2021]

The cognito moto rear pegs. They have a set that folds and a set that doesn’t fold.

[@SirChlorine]

Got a set from Murray a month ago. Having the same particular issue with a 1980 cb 650. Gonna try to do the new boot route and use carb spray to diagnose a possible vacuum leak. If I'm being honest, Murray isn't the happiest guy when it came to communication on the phone. From all the forums and videos I've seen, some people either have the best or the worst experience from him. It's a crap shoot :/ Might just say screw it and give it to motorcycle wizard to take a crack at it.

[@zsgarage2021]

He definitely is rough around the edges. The amount of people that are telling me that they are having issues with the throttle sticking is kind of alarming. Hopefully you get it figured out!

[@SirChlorine]

@@zsgarage2021 Had mine looked at from this local guy who strictly works on Japanese 4 cylinders for over 40 years. Once I mentioned "Murray Carbs" he immediately frowned. He said that he dealt with a couple of bikes with the Murray Carb treatment with the same particular issue and claims those carbs and all carbs are not "plug and play". They require rejetting, synching and all of the goodness. Sure it fits, but all bikes are different even if they're the same model engine. (Compression numbers, timing, etc.)

[@zsgarage2021]

@@SirChlorine I mean, that totally makes sense. I think the fact that Murray states that this is plug and play is the problem. They definitely need tuning (mine ran rich). Good insight though! Appreciate it!

[@SirChlorine]

@@zsgarage2021 Of course! Best of luck on the build! Went back to the 4 carbs. Gave them a bath, rebuilt them, installed some recommended jets from a couple forums, adjusted the clip on the needle and a bit of vacuum synching and it now runs like a clock. Even though it's more maintenance on paper, it's the way to go!

[@zsgarage2021]

@@SirChlorine I read about the different size jets! I purchased a syncing tool as well! I ended up picking up some new carbs.

[@Christopher-bh4gx]

Og quad cards are all you need! A little jetting, raise he needle and ur done. I'm on cafe build number 3 and I have never not ran the stock carbs. Lean how a carb works and u won't have any problems

[@zsgarage2021]

I’ve done a handful of builds too. I usually use the OG carbs but wanted to give something new a go! But appreciate it brotha!

[@Fezzler61]

@@zsgarage2021 OG carbs? Link? Thanks.

[@zsgarage2021]

@@Fezzler61 www.dynojet.com/jet-kit-for-1980-1982-honda-cb750-cb900-stage-1-3-1127/

[@eduardwalhout1740]

@@Fezzler61 I think he means original (OG) carbs

[@ArcticNightwind]

Ive got a set of Mikuni vm32's i think on my cb400 and they run great after re jetting them. The 1 into 2 cable is a high quality cable to, haven't had any issues with it. The Murray's set are Mikuni's right? What Mikuni's would you replace them with? Looking at getting some for my cb750 down the track.

[@zsgarage2021]

The murrays are Mikunis! Just replaced them with Kiehin carbs.

[@laurentginalhac2783]

Hello, I had same issue with murrayscarbs on 1982 cb750k, its not throttle cables but jetting. idling jetting was too lean, needle and main jet were too rich. Replace the #35 pilot jet with #47.5 or #50 with 1-1/4 air screw. My final recipe : Pilot jet#50 Main jet: #170 Needle jet: 159-Q0 Nedle clip at position 3 With this recipe my cb750k has a nice throttle, no more brrrbrrr or boowwwoooaah

[@zsgarage2021]

Interesting! Because apparently I've had a couple reach out to me saying there Murray carbs did the same thing.

[@Fezzler61]

@@zsgarage2021 But I thought the thing with Murray carbs are they come ready to go?

[@zsgarage2021]

@@Fezzler61 that’s my thing! Don’t want to work on carbs after spending so much money.

[@johnwirk]

The guy (murray) should at least send a couple jets one higher, one lower and needle advice for each kit and just take down the "plug and play". I get that he sends them rich as to not melt down anyones engine. I personally would rather get complaints of too rich vs a hole in the piston. But yea, every bike is different and depending on the mileage, one "750" will need a smaller jet than the other.

[@eduardwalhout1740]

thanks for this. was going to buy them. kind of reconsidering now...

[@zsgarage2021]

Totally get that! I've had some people tell me that they had a great experience, and others kind of the same as me with not being able to get them to work properly.

[@eduardwalhout1740]

@@zsgarage2021 still ordered them. should come this week. ill let everyone know how it works out.

[@KawBoyTexas1309]

@@eduardwalhout1740well?

[@eduardwalhout1740]

@@KawBoyTexas1309 I did buy them and they seem to work pretty good. The bike had some other issues so i wasnt completely blown away the second i had installed them. But now they seem to be working fine.

[@Thelongestyoutubehandleever]

Thanks for your review, I have a set of Murray carbs I got for free and want to put it into my CB750 but it seems like a headache. I’ll try my best to get it installed because it was free but I also heard to keep the stock carbs just because of the reliability.

[@zsgarage2021]

If they were free, I’d go through the headache of installing. And who knows, might be totally fine.

[@ericrotermund1004]

I had no trouble with his carbs

[@jamescase6465]

I had the sticky throttle problem too and along with that when I got them the air screws were literally 3/4 of a turn off from each other and were absolutely not synced, I called him and he got angry with me saying that I must’ve somehow messed them up and just about refused to talk to me. Absolutely would not recommend

[@zsgarage2021]

He is a grumpy dude! A lot of people reached out to me saying they're throttles were getting stuck too! Crazy that it's a consistent issue.

[@davidaames8787]

Dude ... Your channel should be about trouble shooting not hating.

[@zsgarage2021]

Totally get where you're coming from. I just believe that if I'm told that a product will work out of the box, then it needs to be that way. I totally get tuning and syncing the carbs. That's one thing, but when the throttle get's stuck, can not endorse a product that can potentially damage the motorcycle, or can get you hurt.

[@davidsnow2420]

Last month, got a Murrays Carbs kit with the solid mount manifolds for my 1975 CB550 with stock 4-4 pipes. The bike is now a hot rod. The transformation was startling and gratifying. I've probably put 500 miles on the set up and am really happy with it. The only issue is that about once per ride, the bike bogs and won't rev above 5K for about 1-3 minutes. It's like hitting a wall--- sluggish to no throttle response other than deceleration. Don't know if it's an issue with the cables or stuck slide. Last night the sluggish response lasted 15 minutes and I was concerned that the bike wouldn't have the power to climb the mountain roads to my house. Stopped to get groceries for about 5 minutes and the bike was back to being a hot rod. There is no good time to lose power on a motorcycle, and abrupt power loss can be downright dangerous. I think I'll lube the cables and see if that helps....

[@laurentginalhac2783]

hi, spark plugs can drown due to too rich a mixture. Remove the spark plugs if they are very black and dirty with soot, the needle is too high

[@davidsnow2420]

@@laurentginalhac2783 I'll check the plugs, but it's an intermittent problem seemingly immune to riding conditions. It has occurred while riding through town at a sedate 40 mph, and at 80 mph passing cars on the interstate--- which is quite embarrassing LOL

[@zsgarage2021]

I was going to say the spark plugs. Maybe too rich?

[@frankie1615]

thats a fuel supply problem , either tap is partially blocked or tank /cap vent is not venting properly ,

[@davidsnow2420]

@@frankie1615 Yep. My mechanic said to try riding the bike with the cap open. Problem solved. Guess that 50 year old cap needs a rebuild!

[@daymonmarek946]

Before you return try a different throttle cable. Also sounds like you're running lean keeping that idle high

[@zsgarage2021]

Definitely running lean. I’ve adjusted which makes it run better, but throttle cable sucks. Maybe I’ll give it a go with new throttle cables.

[@mauricehill5782]

Bro I'm sorry that things didn't work out for you, the mikuni rs would really look good on your bike

[@zsgarage2021]

it's all good. Learning experience! I'm going to order the Mikuni carbs soonish. Once I do, I'll make another video for them!

[@SteveDave.]

Try the cognito moto air filter on the stock carburetor.

[@zsgarage2021]

Hmmmmm, I’ve seen them on there website. Gonna have to give them a go

[@SteveDave.]

@zsgarage7710 Usually, the pod filters cause stock carbs to run lean. We can try more restrictive filters and / or larger fuel jets.

[@zsgarage2021]

@@SteveDave. I was checking out the cognito moto website. They suggest going with the dunk jet 130’s for the carbs. I went to the website and they advertise that the 130’s should be better for pod filters. Going to order that.

[@paulgibson490]

There is always going to be a problem putting mikuni carbs on a Honda complete rejet and even slides ect.

[@zsgarage2021]

I totally get what you are saying! But, the problem wasn't the tune (which can be easily changed), the problem was the throttle sticking. Maybe I didn't try hard enough but I just was concerned with the sticking.

[@paulgibson490]

Is the throttle spliter a mikuni part or some Chinese copy are the cables good quality I don't remember throttle sticking on old yamaha TZ two strokes except in rain, they also had no filters.

[@DJ_Driven]

You could try reaching out to Barnett cables. They can make custom cables for that carb setup. If you think that cable setup is difficult, try working on Kawasaki triples.

[@zsgarage2021]

Thanks for the heads up. Never heard of them but just looked them up!!! Seem legit!

[@zsgarage2021]

I’ve only worked in one Kawasaki and that was the carb only. Maybe one day I’ll get into a older Kawasaki build

[@ericrotermund1004]

I put those carbs on a cx 500 they worked fine 5 min of work zero issues

[@zsgarage2021]

Yeah, bummed they didn’t work out

[@steveminshew]

I’m having the same issue with my Murray carbs too

[@zsgarage2021]

It’s frustrating for sure. When did you buy them?

[@steveminshew]

@@zsgarage2021 A few years ago but I just finished the bike a few months ago. I notice that the sticking get worse as the bike warms up and if I snap the throttle open and closed the idle goes back to normal.

[@supastyler1]

Go buy a injected bike. Carbs are a Labour of love, from my experience, don't put down a carb company due to your lack of knowledge about carbs, they need tinkering with weekly. I'm in Australia never heard of Murray carbs BTW.

[@zsgarage2021]

I don’t disagree with you about the labor of love. But I disagree with you on the weekly tinkering. That’s not my experience from the multiple carbed bikes that I’ve owned. But when I get multiple emails about the same issue with these carbs, I don’t think it’s a me problem. But I could be wrong. I did do a lot of “tinkering” off camera and continued to have this problem.