Some tools we use and like found here amzn.to/3dbOQVE

Recently, I bought a 1995 Virago XV100 as a garage find. It had not been started in 20 years. I cleaned the tank and put on a single Mikuni TM40. My plugs are a decent color. But will only idle fast and has a flat spot in the mid-range. Thanks for your video and advice on tuning. I think I’ll start over from scratch and see how it goes.

Check out my new answer video here kzfaq.info/get/bejne/rNOcp6t83dq1kas.html

Just a message as of sept 28th, 2017 bike is still running strong and is ridden every day. Lost about 500rpm up top but pulls from idle strongly to redline.

I have been a motorcycle technician since 1984 also. We always adjused the mixture screws so the plugs were white and ran and idle better. I had 14 years at the worlds largest dealership in Falls Church Va. and have worked at alot of dealers in my time. But basically just do a idle drop.

There will be a live stream tonight Dec 8th at 8 pm Halifax NS time that will address many of these questions. Hope to see you all there!

Shawn, Great Job and Very useful Information too

I tried your custom modification to the stock throttle cable and it worked great!! thanks

Sounds healthy, buddy! Great conversion!

This is an old video but your advice helped out a lot. My bike is a 85 XV1000 and I went with the VM30 like you said. Those old Hitachis were driving me crazy. It bogs down at 3/4 throttle now but is ok below and above that. A minor needle adjustment should take care of that. Thanks again.

You, my good sir, are magnificent. Thank you for pointing me in the proper direction.

I'm working on my 83 virago 500 ..the original carbs drive me crazy. Tank for the video.

i have a 1983 XJ900RK SECA I AM RESTORING. I loved those bikes

As of August 3rd,2018 the xv 1000 is running like a champ. Replaced the stock ignitor with a Carmco electronics digital unit. Wow! what a difference. Easier starts smoother running and more power. Autolite ap 63 plugs work well.

Brad shawnley !!! It good seeing that your alive and well

Good work thanks a lot Pal

Just bought this same set up for 1987 xv535 virago. Thanks for the tip on the filing of the throttle cable. As the one that came with my vm30 was too short. I'll post my success or failure this coming week after my install.

Mikunioz company sells all sorts of carb kits. I put a recommended VM38 on my 78 sportster and it runs great, size wise. The 30 does sound a bit small but is it works that’s good. As a guide look at single cylinder bike carb sizes and they should match to a v twin of double the engine capacity quite well. To fine tune you can temporarily fit an exhaust gas oxygen sensor and check your readings starting from wide open then all the way down to idle.

TUNING MANUAL HERE : www.mikuni.com/pdf/vmmanual.pdf

what did you do to make the stock throttle cable work? I have a different single carb kit. I will let you know when the customer tells me. I tried modifing the stock cable but it is too short to start with. The cable goes inside the throttle valve not on the outside of like the stock carbs. Customer paid only $300 for this carb kit

Let me start over first my apologies for not being more specific, first of all i have a 1990 XV750 which i know is a little different from your XV1000, mine doesnt have the vacuum port above the ignition coils upfront by the forks, i went from a vacuum petcock to a manual shutoff valve with the fuel filter into the VM30, my single carb manifold(with no vacuum port) is flush to the engine's on both sides so my question was do i do anything about the timing or is it all handled electronically by the TCI? Am i over thinking?

Is there anyway to attach a TPS? I am planning on purchasing a BiP kit for my 2006 Vstar 1100. And the TM40-6 is the only carb I've seen people fitting the TPS to the accelerator pump.

Nice song!

Hi. I enjoyed your video. I have a 83 XV750 that I built up (you can see it on my youtube channel for reference) and I installed dual VM-34's. I'm a heavy duty mechanic, but NOT a motorcycle mechanic. I'm handy but no expert with carbs. I can dial in the idle and wide open throttle. When riding at cruising RPM and crack the throttle open my bike hesitates, tries to stall out, then catches itself before accelerating normally. I have tried everything under the moon! Jets, needle positions, needle change outs, anything and everything I could think of and was suggested by others. I had to have custom intake manifolds made and I see you have a vacuum line coming out of yours that I don't even have an option for on mine. Does that go back to the carb for a vacuum actuated accelerator pump or something? I just feel I am not getting the fuel required with I punch the throttle at mid RPM, low engine load. Thanks.

Very interesting, be doing single carb on my 535 asap, subscribed,

Great video man. I have two 84 virago xv700. I was wanting to switch one to single carb but I’m worried I’ll loose to much power. The bike I’m planning on doing this to is my project bobber bike and the two carbs it has now are just beat to crap so I figured I’d give it a go.

I really like your set up I have xv1100 but I'm assuming it's going to be the same way. Can I have more info about the throttle Cable

So got my vm30 installed on my 87 535 today! She starts right up and idols but still need to do all my tuning. Appreciate your video. Mines coming soon

usually the air mixture screw is set around 1 to 1.5 turns out. fuel screws are around 3 turns out

let me know what you did on the throttle cable. i can buy a cable kit but customer said he could not afford it

What did you do on the throttle cable?

great vid i just bought the conversion of ebay for my 750 it came with a flat slide 34mm carb.would a 34 be to big

I appreciate your vid, well done, but most guys go the VM34 X 2. Even jetting wouldnt make up for it. And your running stock pipes and air filter I guess. Its got to run lean as you go up surely. Much respect.

Good afternoon, first I would like to say that I think it is awesome that you actually take the time to replay to people questions and comments. I have a BIP manifold with a Mukuni tm38 on 87 Xv700, and I can not get it to stop filing the plug on the rear cylinder. I have it tuned to the best of my ability. No popping or bogging, smooth accelration throughout, just rich on the rear plug. Wasn't having this issue with stock setup. Do you think It may be the carb or the manifold?

I hope you dont mind me asking since you made this video a couple of years ago but as I mentioned in my last post my xv1000 with single Vm30 is bogging down at 3/4 throttle. its Ok before and after 3/4 throttle. Do you think its a rich or lean condition so I can adjust the needle accordingly?. Thanks in advance.

The VM30 feeds your motor enough go juice? If it can keep a liter bike chugging, it should be just fine on my 94 750. Looking at getting that exact same setup. Are you still happy with it?

Hi, your videos are really interesting, and i am learning a lot by watching them. At the moment i am struggling with adjusting the original dual carb on my XV500, and i was wondering, if i go with a single carb, what size would be the best? And do you recommend a flat slide carb, or would a round slide be better? Thanks!

Hey there, for the other side of the bike under the bug eye, there are some lines going to the air cut off valve and a small air box. What did you do with those lines when you swapped the carbs? Thank you

how did you mod the cable i'm switching to single using a pwk 34 carb that came with the intake on my 88 750

Do you think I can do a single carb swap on my VT1100 shadow? It has the dual carbs

Been fiddling with my 1981 XV750, and have a VM30 just like yours on a single carb manifold. I’m struggling to even get the thing to start, I just want it to idle right now. I rode the bike for the past year on the factory carbs, so I know it’s in good running condition, I just have no idea what to set my base settings to be in the carb. I see some ideas of pilot and main jet sizes, looks like maybe a 35 pilot would work, but shouldn’t it fire off at least for a little with the 40 pilot that came in the carb? Any thoughts would be much appreciated. -Jacob

im still 'on it ' but it is noteworthy that " wasearayguy popped his clogs on july 30 2000 . my condolences to susan . ive purchased the lithuanian manifold and probably wont get it for several weeks but ive rode so much this summer that i dont even mind being down the rest of the year . im over the stock carbs , they are just troublesome and complicated .

I have a 82 virago xv 920 and I'm putting on the same carb

What about the engine breather? This way, it’s not connected to any filtering system.

Was wondering what jets you used im doing same thing to same bike , also did you eliminate fuel pump, and gravity feed or keep the pump ? Thx !

I ended up buying a very similar carb. 38mm snowmobile carb…. My issue is I need to find a 38mm boot before i can even set her up on the single carb manifold I got. Plus the top throttle feed has a different cable end then my stock cable so I need to get a new cable to or try to buy a tiny end peace to solder on there.

Does the bike run better with a single carb? I've heard mixed things about it. What benefits do you get out of a single carb that the original carbs on there? I'm considering doing this myself

Wonder if you ever have any issues with the knee hitting the carb/air filter sticking out the side?

Sorry if you answered this but what did you do with the tube from the coils? Im deleting AIS and the MCV also for the cable did you just chop it get a ferral and solder it on?

I got a xv700 just installed a vm30 carb on it still got the 250 jet rn I need to order a jet kit for it but I can't even get it to start at is the 200 needed to get it to even idle

Hi Shawn, when you put the throttle cable on the carb how far is it screwed into the cap?

Hey bud great videos, I got a question for you, I'm mikuni vm32 carb on an 85 xv1000, with 200 main jet and a 35 pilot. Do yousuggest jetting down the carbs or jetting up the carbs given the larger, carb size than what worked for you. Thanks for all your help!

How did u run the stock throttle cable? I’m not getting enough length to go up through the handle

Did you have to make any adjustments to the carb or was it just ready out of the box

Stupid Question.. So My 85 Virago XV1000 With A Single Carb Using A Mikuni Hs40 Keeps Backfiring Out The Exhaust When Accelerating Low RPMs.. Ive Done Everything And Now Just Checked My Pilot Jet Size And It Was A 25.. Needs To Be Bigger?

How did you modify the cable to work? I just got the same carb for my xv1100, now I gotta fit it!

Fuel bowl full checked and double checked valves spark ok put 35 jet in carb the 1 what was in was 28 just ordered compression kit from e bay it was running on olde carbs before i went down single carb route

So the stock fuel pump isn't to much for a single. Number 2 loads up and no matter what I do still does. I modded the stock exhaust true duel removing the bladder baffle and made huge difference for tuning but that twin carb after rebuild and fine tuning still loads up number 2. Its my project i wanted and tried to sale but now im going to see it through and keep it.

Hi Shawn, are you using the stock fuel delivery system on this?

Man thank you so much for this forum you are a true bike guru!!! My question is that i have my manifold installed as well as the carb, where does the timing hose go because the manifold doesnt have a vacuum port. I'm worried about the bikes timing now? Thank you!!!

Hi ! I too would like to turn my XV 1000 into a single carburettor! what jets and pins did you put on mikuni?

Nice bike. Can you please give me more info on installing and modifying the throttle cable.

Was the vm30 a good size? My Xs650 comes factory with twin vm34’s.

Doing this conversion on a 97 750 was wondering how you did the throttle cable?

What did you do with the holes on the intake boots that the vacuum line connects into? What did you use to block them off?

Hello! Been watching your videos about mikuni vm30 to a virago 1000 -86. I cant get i to run lean. Sparkplugs always get soty. I think i need a smaller main yet. I have a 250 main jet and the needle is set to the highest position. After a day of riding the sparkplugs are unusable and needs to be switched in order to run the following day. What do you think? Thanks

Would you happen to know what the part number for the bip intake is or what it's for. I seen the virago and it looks close to my head's. But im kinda hesitant on spending damn near 200 dollars on something and have it not work. Mines an 03 vt750

good 我有一辆 Suzuki Intruder 400

I have an 85 xv700 with a vm30 kit from BIP. Any recommendations for a staring point with the jet sizing. I am having an issue with getting the bike to start. Any help would be greatly appreciated!

What's up bro, I have a lot of questions hahaha, I speak Spanish, can you tell me which carburetor did you use? And the collector did you?

How did you hook up the “blow by gases” from the case?

Hey mate, I’m curious how you modified your stock cable to suit the new carb? Are you able to explain it to me, cheers!

Hi Shawn, great overview. I just got the BIP intake with the VM30 for my 81 XV750, my question is how is the vacuum line routing done on this now that there’s only 1 carb. It’s got me stumped and the only piece of the puzzle I need! Any help would be great. Thanks in advance.

I know this is a 3 year old video at this point but still hoping for some help... First of all, very nice setup! I have attempted to do the same on my '96 xv535 bobber, and I bought a tm40-6 flatslide which I've now come to realize is way too big for my displacement. So looks like I gotta get a smaller carb and jet it right. After looking around I found another video of a 535 with a vm38 with the following specs: Main jet 190 Pilot jet 30 stock needle jet needle position center clip Should I go with the vm38 and jet it to this guys specs or follow what you've done to yours? If you think the vm30 would be better for the 535 what would you suggest for jet sizes? Any help is much appreciated. Thank you!

I like your video. I'm doing the same to my 85 xv1000. But the new style intake doesn't use old boots. It came with gaskets. My question is what did you do with the 2 bigger tubes off the cylinder heads next to exhaust that ran to the side of the bike under the chrome cover.

do you have the air screw all the way in and play with the idle screw until it start then you play with the air screw ?

Hey Shawn, I’m doing the same swap on my 535 but I am having a hard time finding a jet. I’m wanting to start with a 180 main jet but can’t seem to find one anywhere? Any ideas where I can find one?

Hey, I know this video was posted a while ago. I have a 1998 virago 1100 and got this same kit from BIP. The bike runs at an idle over 2000 rpm. I tried adjusting the air/fuel screw and still nothing changes. Anything you know that could point me in the right direction?

Shawn Bradley, I have an 87 xv700 with an Adam Smith intake and Mikuni TM40-6 and I cant get this this dialed in! My current setting are 20 pilot, 165 main, clip at the bottom and 2 turns out on the fuel mix screw. I had a 17.5 pilot in it and it would cough through the carb at low speeds and so i upped the pilot and now it goes good up to 3rd gear then when i snap open the throttle it boggs then power comes back when i let off. The pumper seems to be more of a headache than its worth!!

👍

Hi there I am also working on my Honda Steed 400 w a single carb. Been struggling to fine an optimal A/F adjustment, currently I had it at 1.25 turns and it'll backfire at the carb when I accelerate the throttle. Should I go to 2 turns and work my way clockwise? what would you recommend. By the way my carb is a Keihin 30mm

Hi, first of all nice work on that lovely bike ! I'm interresting into buying one BPI kit for mine XV 1000 (87 made) Just to be sure i've figured all good : Idle near 850 / 950 rpm Original Main jet 260 Original pilot jet 40 And then ajust with the air-screw (about 2 and half out) After that raise the niddle clip from one upper (See the spark plug to get that sweet chocolate color :) ) And you use the same throttle cable but adapted it ? Is that correcte ? Thank you from France I'm sorry if i've misspelt some word

Also how musc was your digital timing and how do you install one?

I have a 1983 Yamaha xv500k and want to convert to single carb. Tiredof dealing with two. Could i get some info on parts .

Do you have a picture of the end of your throttle cable I’m doing the same to my ‘87 xv1100 and don’t want to take off too much when filing mine

Had mine running pretty good after watching your video, took hose off of breather going to frame now it wont start . any idea why? Was trying to put a filter on breather instead of going to frame. Its on a 1995 xv1100.

you can buy a spark plug cleaner thru Matco but it is $50

Shawn, when using stock cable, is it nessasary to cut any of the threaded part off cable housing at carb?

Where did you get that intake manifold?

Hey bud i am from Manitoba so hows the Carona situation at your end of Canada anyways I'm going to order a vm30 for my 920 with a searay guy intake hopefully it will work .. I read through your comments on the throttle cable mod but did you still have the chrome crimped end on the cable and if you did how did you get it in the carb cable adjuster .. the one on the carb not the throttle itself . Did you drill the hole bigger because the cable won't fit unless I pull of the metal tip 🍻 cheers and have a great day

I just bought this kit myself for an 89 1100. It has that double throttle cable set up, and I'm not sure the best route for a throttle cable. Stock handlebars and everything. Any input would be appreciated. Love your videos

Awesome job man I'm working on a 89 xv750 kinda stumped with the throttle cable how did you modify it ?

Hi Shawn, thank you for your video. This is very nice mod. Im have two question. Mikuni vm 30 is OK possible for XV400? And, fuel consumption is lower, or why benefits have it? Mikuni is ot membrane carb, this is older type carb and have aprox. 25% hiher fuel consumption. . My idea is change frame and cut airbox on the frame - make biger fuel tank. Wat function air box has? maybe just rotate factory stock on 90° and add papper air filter?? What is better? Sory for my bad ENG.

I am running a bip intake. With a kehnin carb.. my problem is that I only have 1 cylinder firing. When the originals where in. The front cylinder would fire.. now with the single carb the rear is only firing. I know I have spark to the cylinders. But I can't get it to fire any advise?!?!

Like making bull breathe through a pixie stick

Ok here i go. Im doing a single carb system. What did you do with the exhaust tubes on the left side to do away with them and did you stay with the electric fuel pump. i havent decided on carbs yet. Any suggestion.

I have a 82 virago xv 920 and I am putting a 40mm manifold and a vm 30 carb I do not have much time working on motorcycles is the carb going to going to work straight out of box

i have a 1985 XV700N customer bike . he bought the kit but no cable came with it. what did you do to modify the stock cable.

I would also like to change my 2 Hitachi carburetors fitted with the Yamaha XV 1000 Midnight Special with a Mikuni Vm 30! where can i find the collector 2 in 1?

I know these is a old video but do you remember what model K&N air filter that is?