Yamaha XS1100 Cafe Racer Project - Episode 37 - Fitting Mikuni RS36 Flat Slides

A little upgrade for the fuel delivery on 'Basket Case'

[@knowidea7485]

Engine looks stunning , Pods sitting nicely & Sounds awesome , great work

[@scottmiller4034]

Excellent video! You really know your stuff! I have been trying to help out other people and explain the problems with using pod filters on CV carbs for years and you explain it very well here! Thanks!

[@Tony211289]

Hilarious intro. I spent my last year in Tassie, Devonport. Would have loved to travel down and seen the project

[@lewismcrae4271]

Same carbs I have on my z1900 they work great and I'm running pods too awesome carbs

[@brianbatten3664]

sounds so much better.. glad she's all sorted now mate.. been a pleasure to watch and get some tips and tricks for when I start mine.. now you can finally enjoy all your hard work..

[@ANDY5]

+Brian Batten Thanks Brian, I am enjoying already. A few other small jobs that I want to do to be fully satisfied but she is 99% there

[@CadillacZachOffical]

The only way I was able to get pods to work on my CV carbs on my 1980 Suzuki TSCC 16v 1100 was to use the Suzuki intake boots, use oversized pilots and a 130 main jet, I did not modify the slide vacuum ports or springs, instead I opted to run additional thick covers over the pods, this effectively increases vacuum and meters the air flow to a more constant velocity, the throttle response is very similar to the factory air box, with the exception it makes a bit more power clear through the rev range via it's open pipes and bigger jets.

[@SuuperSXV]

It's possible to tune our CV carbs. Main jet 150, needle around 4mm higher through spacer and adapting the nut above and building the stock velocity Stacks shorter and fitted them into the pod filters. It runs great without any problems :)

[@peter-rn9wi]

Hi Andy,Good to see we were on the same page.Spoke to these guys a while back and left it as a last resort fix.I have also found out that the FJ series (1100 and 1200) 36 mm cv carbs are a good fix.Can swap over the jets from old carbs to good effect.Fantastic to see the girl under her own steam and running really well.Would like to get in touch with you if possible.Cheers mate.

[@ANDY5]

+peter80 I've heard that too Peter. I just decided to jump to the ultimate solution.

[@mistermacgray]

I broke down and bought a set and love them on my xj1100. I do need to adjust the valves as they are causing slight feed back one wouldn't like but I've never seen or heard if them being adjusted in all the years my dad owned the bike before giving to me.

[@saul78oldrite]

Great bike and awesome video! Thank you for sharing!

[@fleabags4589]

hey andy.I have a motorbike obsession myself.And i too should not be left on my own without adult supervision and a credit card.So I am now waiting on a set of these for my gs850.Awesome.

[@ANDY5]

Brahahahahaha good on you mate, excellent choice. You think that was bad, head over to my channel and check out my new head $$$$$$$ Andy

[@mmaxon888]

I have an 80 XS850LG and am also tired of messing with old crappy carbs. How did the new set turn out. They look super pretty on ebay!

[@ANDY5]

I couldn't be happier mate, in essence it is similar to fitting a Holley carb to an old petrol engine car. Thanks for tuning in, Andy

[@fortj3]

"like a dog shot in the ass". Best and most accurate description ever. That's how my CVK36s are above 3000 RPM. Below that they're a dog. That's when they're too lean on low end instead of pissing petrol out the airbox. Can't wait for my Mikuni flatslides to come in. Thanks for the info and advice.

[@andyjota8906]

Adult supervision whuuuurr just sent a shiver down my spine mate......................... Is there not a tool you can get to reseat/ regrind the air mixture hole like a valve cutting tool???? if there isn't there should be perhaps...........

[@KnightBurgundy]

I have a 79’ GS1000 I’m considering getting these for.

[@mistermacgray]

I own a 1982 yamaha xj1100 and your series of videos is what I needed to see, this one being the key one. The factory carbs on mine I have rebuilt but I don't think they are worth tossing much more time into. Bike was parked 10 years ago with fuel and despite cleaning the carbs out, there was no white death, number 3 wont work at an idle as it should. The YICS I've bought the tool to shut off and still I don't think it dis that, vaccum gauges were bouncing all over the place and there was no way you could sync the carbs for your life. I'm sure at this point I'll be doing the same carb swap as you have done and I did find the RS36-D8 K and would you recommend just getting those since they are already 77-85-77 or go with what you got, the D3 and do the mods to make it fit? Engine om mine is strong, has been in the family over 20 years and very well taken care of, just carb issues is what im chasing.

[@brandondavis4624]

Honestly it sounded like she woke up and is able to breath better

[@zeke2566]

Great vidio,how about metal braided advance line? And some zip ties,love the bike! Go yamaha,s...!!

[@adamwilde3280]

Hey Andy, does the vacuum line have to go to number 2 carb with the new mikunis? I’ve just installed a set to my 1100 and the vac advanced chatters like crazy at idle! I’ll install a small valve like you’ve done and see how it goes! God I’m glad you made videos of everything 🙌🏻

[@jonstoetzel9720]

great sounding

[@adamfrench2337]

Hey Andy, Watched nearly all of your videos and they've been tremendously helpful as I'm working on my first build/mod. My question is, I haven't yet heard you mention which pod filters you're running? If you have specified, I've forgotten, but I figured I'd ask. Did anything motivate your choice or are all the reputable brands pretty much the same? Thanks! Keep up the hard work on these videos. They're appreciated!

[@ANDY5]

+Adam French G'day Adam, I have tried cheap pods, ram air foam filters etc but the only ones that I have found to work, and not turn my oil black in two minutes, are the K&N oval pod filters. That's all I use now. Thanks for tuning in mate, Andy

[@thetradinggoat5101]

Great video

[@QuickShiftMoto1]

Hi Mate! I have a RS46 carb kit for my 1979 XS1100F coming from MikuniOz. I am not sure what jetting they come with. Can you please tell me the various jet sizes and needle setting that worked best for your XS1100 in the end. We are at 300m above sea level to not that different to you. Thank you!!

[@justinford9820]

I was wondering how did you spread the carbs apart? I’m having a hard time with mines. Thank you

[@ANDY5]

G’day mate, going strictly from memory here. I think that I only had to move two carbs because it was only the centre measurement that was different. You obviously will need to remove the screws for the rails, or loosen them at least. I think they’re slotted. Remove the caps from the top of the carbs to reveal the shaft that the slides are actuated from. You will notice that there are extra threaded holes in the shaft to allow you to reposition two carbs further inboard. You will need to remove the locking screws for the synchronision mechanism and then slide the carbs across, there was some fiddling with the accelerator pump mechanism too I think. It should be pretty obvious as soon as you get the carbs all loose and can move them.

[@fortj3]

Dude, the intro for this video is hilarious. I ended up getting a set of carbs from an 05 ZRX1200 for mine. My #4 carb has a broken float post with an old epoxy repair that the petrol had turned into goo. I did the whole mill/thread repair. No joy. The only things I can get that carb to do is flood (pissing gas out the airbox) or starve (not a drop of gas in the bowl). Even with #4 starved, the other three were running excessively rich, no matter the adjustment. How do the ZRX carbs run? I'll let you know, IF my new throttle cable ever arrives.

[@ANDY5]

Have you got it going yet mate?

[@fortj3]

No (hangs head in shame). Haven't found any throttle cables that work with this combination of bike and carb, in spite of the results had by some forum members. So, I've ordereda Venhill throttle cable kit. I'll just have to make my own cable. Not a bad skill to have, I guess.

[@oaktownghost4219]

I have a set up coming from the same place you bought yours from. It would be great if you could show up close how you set up the dual cable throttle assembly?

[@Granpapag]

Nice project, enjoyed all episodes. learned lots. Any plans to dyno, be nice to see what she'll do.I am having grief with my carbs too on an 81.

[@ANDY5]

+Glen Roberts Hi Glen, next time they are having a free dyno day, probably. Hard to justify the expense at the moment.

[@e30gangsta]

Andy I just bought these carbs for my xs11. Do you happen to know the size of the ball valve you purchased? Thanks!

[@SuperAlanmax]

Brilliant stuff Andy! When you do stop for a break from riding it, please stick that go pro on and give us a nice riding vedio please. :)

[@ANDY5]

+SuperAlanmax Look for a ride video later this week :)

[@KennyG233]

Try hooking the vacuum advance line up to two of the carbs, instead of the just 1. Use a 3 way tee.

[@ANDY5]

The ports are too large, it would be worse with two. Designed to function off one 0.4 mm orifice

[@fortj3]

I installed my RS36 carbs. Huge improvement over the previous carbs. However, around 2500-3500 RPM, under high engine load (accelerating ) it backfires through the carbs. Seems they're leaning out, but where? I dropped the needle clips one notch, and adjusted the pilot screws to one turn out. Mine came with the 120 and 125 jets sealed in the bag, so I presume the 130s are already in the carbs. Perhaps I need to pull them to confirm their size? I used the gaskets that came with my new carb boots, and used Aviation Permatex Form-a-gasket on both sides of the gaskets to seal them. Perhaps I need to remove the gaskets and just use the gasket sealer between the intake boots and the head?

[@gregorycrossman2709]

Hi Andy love the vid Where did you attach the vacuum line to number 2 carb for the vacuum advance ?

[@ANDY5]

Thanks mate, I explained the vacuum advance at the very end of the video and how I dealt with it.

[@gregorycrossman2709]

@@ANDY5 Cheers Andy I watched the video again and you explained it well I have got a set of flat sides I am about to put on my xs I will let you know how I go Thanks Greg

[@robinlinde2572]

Hi Andy, Let me start by thanking you for all of your videos. They are very helpful indeed! I know this is an older video and that you've changed to newer carburetors. In fact I have the very same problem with my carbs as you had in this video. All four have broken pilot screws where the tip of the screw is stuck in the seat. I still hope to be able to save them by drilling out the tips. Anyhow, my question to you is related to the vent/breather hoses. A previous owner fitted pod filters and routed the vent hoses to the inside of the pod filters by cutting holes in two of the filters. To me, this solution does not seem ideal. What was your plan for the vent hoses? Best regards, Robin PS. What happened to your old carbs?

[@ANDY5]

Remove the hoses completely and point the tee down towards the ground. The hoses play havoc and pointing them down should keep incidental water splashes out of your fuel bowls. CV carbs are very vacuum sensitive and variations across fuel bowl, air correction jets, diaphragms etc causes all sorts of headaches. But plugging them into a pod filler is a bad idea, IMHO.

[@fortj3]

I finally got tired of throwing good money after bad on my CVK36 Keihins. When they run right, they're great. Trouble is, mine run poorly much more than they run right. They will alternate between running too lean (though they're jetted properly for the bike as set up) and flooding. So, I've ordered the RS36 Mikuni carbs to go on my 1981 XS1100. I plan on running K&N pod filters and a much more open exhaust. I have a pair of Cobra mufflers that I got cheap that are a straight through, glasspack style motorcycle muffler. May or may not put lollipops in them after it's all together and running right. So, what suggestions do yo have for me regarding tuning the Mikunis? At first, I'll be running the stock exhaust and either the stock airbox (with K&N filter) or the K&N pods.

[@fortj3]

I hated to spend that much on carbs but at least ordering parts will be like ordering parts for a Holley or Edelbrock performance carb, instead of having to try to get carb parts for an exact bike or trying to find carb parts for another bike that will work. The commonality of parts across the Mikuni RS range should be a huge benefit. Then, there's the whole flatslide pumper vs CV carb thing. Where I ride, there is very little difference in altitude. If I rid up to the mountains, I'll stop at my buddy's house and re-jet as needed.

[@ANDY5]

G’day mate, I can tell you that you won’t be sorry. They will transform your bike. They will come with a jetting guide and a selection of jets for the configuration you bought for. I just followed their recommendations for an 1100 and I haven’t had to touch them since. Let us know how you get on.

[@steveright1937]

I have a 1980 XS100 Midnight Special and have owned it since 1987 . I am considering selling it sadly due to a neck problem .

[@lachlanduncan6976]

just put on a set on my xs750 can only get big backfires from it no ignitions, was there anything simple i was supposed to do out of the box?

[@alexroma85]

Hi don't know if you are active, but i will try.... i bought a new set of mikuni rs 36 (flat slide) on my bike, with standard setting, on the road the bike runs good but if give gas suddently from idle it boggs sometimes, i tryed a bigger pilot( from 17,5 to 20 and to 22,5) but is the same i have also problem when riding, because rpm takes some times to go back to idle and the bike remains a bit accelerated, i moved the needle clip 1 step down (rich) but same problem. All let me think that is lean but the sparks are black the fuel screw are 1/2 turn out (if i try to close all them the bike keeps running) manual say the is the max out turn raccomended.Any idea? Tks!

[@wilfredoortiz339]

Hi Andy greetings, I have a 1981 midnight special and I I’m going to install a mikuni RS36 flat slides but I like to know if have to made any changes to the carbs and wich size of main Jets I use for a fine carbs tune ? Thanks a lot my friend 🙏

[@obiterdictum3021]

I got an xs 1100 as well,. could you post where i could find some carbs? much thanks.

[@MG_000]

brave soul! awesome build

[@ANDY5]

+mario guerra Thanks Mario

[@oaktownghost4219]

Where did you route/connect the hoses that came off each carb?

[@jordanshawcountry]

Hey Andy, what did you do with the stock vacuum advance line? Thank you!

[@ANDY5]

I covered this at the end of the video.

[@jordanshawcountry]

@@ANDY5thank you

[@DistinctOgre]

Great video, Mr. Andy. Thanks. I lol @ "like a dog, shot in the ass". I know they've always been called push/pull cables, but aren't they actually pull/pull cables, like the rudder cables on an old Piper Cub?

[@ANDY5]

Yes they are a pull pull set-up. One pulls open, the other pulls the slides shut.

[@rustygarage6838]

how did you separate those carborators

[@tjj6583]

My RS36 CLICK . . It drives me crazy. Must the the flat slides. Clicks on idle. . How did you make yours quiet, vacuum regulator? Engine is a Suziki GS1100.

[@magnusandersen4682]

Hey Andy! Im building my own XS1100, and it is a pleasure to follow you. Do I understand you right, when you say that the standard carb won't be able to perform with new air pods?

[@ANDY5]

Hi Magnus, thanks for tuning in. You will be able to get the standard carbs to work with pod filters but getting them to perform is problematic. CV carburetors require the air to be delivered in a smooth and balanced way, due to the sensitive nature of the diaphragms, air correction jets and emulsion tube design. If you want to ride the bike on a regular basis, and you want it to perform, my personal feeling is that you should either keep the factory airbox, and fit a K&N filter, or fit non-CV carbs. At least don't cut any of the airbox mounts off the frame until you have tried and are satisfied with the result. You may want to have a look at this video too kzbin.info/www/bejne/jKWZeaepnMyWp7c Cheers, Andy

[@magnusandersen4682]

Thank you very much Andy. I have had some bikes now, and this xs1100 should be my masterpiece. So i will definitely take your advice. Do you recommend other carburetors or is Mikuni the best for the xs1100? Greetings from Denmark! /Magnus

[@ANDY5]

+Magnus Andersen Hi Magnus, I'm not sure who else makes race carbs to fit the spacing for a XS11. Maybe Keihin?

[@LillRogge]

Is it possible to fit these on a honda Cb 650 from 82? Maybe not 36 but mikuni on general? I've gotten rid of the airbox on my cafe project and you know what that means... ;) Anyhow, Is it possible to change in width in all four or just in the middle you can change? Love your videos, you are good at informing in a way I understand Cheers from Sweden!

[@ANDY5]

G'day mate, you would need to contact your Mikuni retailer to answer that. Every CB Honda I have seen with racing carburetors I have ever seen have these www.dimecitycycles.com/vintage-cafe-racer-caferacer-bobber-brat-chopper-custom-motorcycle-carburetors-keihin-cr29-cb500f-cb550-cb750-sidedraft-racing-carburetor-016-3025.html

[@fortj3]

So, my new RS36 Mikunis came in and I have a question. The bell crank for the throttle cables has two holes for each cable, push and pull, for a total of 4 holes. Does it matter which of the two holes I use for each of my cables, or does it depend on the individual bike and cables? The reason I ask is because mine is a 1981 H which is the Venturer (factory fully faired, touring version) and the OEM handlebars are longer (pullback bars) than the bars on a standard. As a result, my effective throttle cable length will be a little shorter. I was thinking I could use the two holes in the bellcrank that are closer to the bracket for the carb end of the throttle cables. I noticed you used the other two cable holes in the bellcrank, but yours has shorter bars than mine.

[@ANDY5]

G’day mate, use whichever holes best suit your cables. If you’re fitting them to something like a Venturer have you got a strategy for connecting to the factory airbox, or are you going to run a different filter arrangement?

[@fortj3]

@@ANDY5 I have K&N pods for them, and a pair of Cobra 6002 slip on mufflers.($300+ mufflers, I got them for $20 at auction) I may run my OEM airbox and mufflers for a while. I have a set of modified OEM velocity stacks from a spare airbox that I modified to use with the CVK Keihins. I can use it for now. I may have to jet them a little leaner, for use with airbox and OEM mufflers? I haven't looked yet, but I'm pretty sure the 130s are in them. The 120s and 125s are in a bag in the box. I have a couple of other options for exhaust, if the Cobras don't work out. I do want to stick with the 4 into 2. I like the sound.

[@cgale337]

Oh man I've been wanting to get some Keihin CR specials for my XJ but was wondering if it's worth the hefty price tag for racing carbs. I believe this video has made up my mind. My wallet is going to feel a lot lighter...

[@ANDY5]

+Cody G You won't be sorry. I can only talk about the Mikuni but I'm sure the Keihin will be just as good.

[@nealfolts5893]

Awesome video, I just ordered a set for my xs1100L café project. One question; What are the black tubes coming off the bottom and how did you secure them?

[@ANDY5]

Mate you will looove them. The black tubes are float bowl overflows and I tied them together with a zip tie and poked them through a hole in the casing near the middle drive.

[@nealfolts5893]

Andy's Motorcycle Obsessions awesome. Thank you for the information. You are an inspiration.

[@nightster6378]

Why would anyone mess with the standard carbs in this way? I would love to hear your explanation on how the Mukini's were a necessity for her scooter when she got the PayPal bill. And her hysterical reply "how much"

[@ANDY5]

Best wife ever

[@markwright9352]

Hi bud awesome work, So is it better to run the RS36 carbs with the factory airbox or pods??

[@ANDY5]

G’day Mark, either or mate. I have K&N oval pods on mine and they behave fine. My mate has adapted them to the factory air box and his work just as well. They are not as reliant on the shared air plenum or tract length as the CV carbs.

[@markwright9352]

Cool thanks Andy I have XJR1300 and was thinking along the lines of a stage 3 kit but I like the look and the idea of these little beauty’s!!!

[@benhebert2322]

Andy i might be biting the bullet on these. I just looked at my carbs tonight only to my horror to discover the needles on the fuel air circuit screws had been broken off in the carb body. Im basically in the same position you were. Any recommendations on where to get these? Mikunioz? Ebay?

[@ANDY5]

+Ben Hebert woo hoo Ben, you will love them mate 👍 as for where to purchase I would recommend Mikunioz, but of course if you can find them on eBay then great. My mate bought some RS38's on eBay but they're a bit big. You could also try Amazon.com

[@benhebert2322]

Andy's Motorcycle Obsessions got mine in and forgot to order a nice set of jis screw drivers with them so i could make the xs1100 adjustments 😑

[@ANDY5]

If you're gentle you may be able to get them apart, take note of the slide adjusting nut position and try to put it back in the same orientation, good luck. Andy

[@angusbruce8336]

I have a 78 xs1100 running pods with no problems and no carb mods at all.

[@ANDY5]

+Angus Bruce G'day mate, thanks for tuning in. Yes, it is possible, as you know, depending on the filters you buy, your elevation and the condition of your carbs. Mine had an uncontrollable pilot circuit but once you were past that it ran fine. Thank you for taking the time to comment and letting the doubters know. Cheers, Andy

[@angusbruce8336]

Glad to see an xs1100 getting some love and attention! Good work.

[@ANDY5]

+Angus Bruce Thanks M8

[@jonlystrup1643]

Hi Andy. I am living in Norway and looking for Mikuni RS 36mm for my 92 Suzuki GSX-R 1100. What are the cost in Australia? And where can i buy them, where did you buy them? All the best and thanks. Jon Lystrup

[@ANDY5]

Hi Jon, cost in Australia is about $1200AUD including the throttle and cables. Purchased from Mikunioz. Andy

[@jonlystrup1643]

Thanks Andy. Nice to follow your experience on bikes. Good learning.

[@marksingertx]

Nice! You are full of surprises. I have to think about my carbs now. I'm curious, how are the rear shocks working out. Are you happy with them?

[@ANDY5]

+Mark Singer Hi Mark, yes they seem fine. I haven't pushed the bike very hard to date but so far so good.

[@mikvagn]

That vacuum regulator looks brilliant, but i Can’t find any in DK - a link would be appreciated 👍

[@kasperkjrsgaard1447]

Hvis du endnu ikke har fyndet noget der kan hjælpe, så prøv at kigge ind i en akvarieforretning. Der kan du finde lufthaner til filtre og udstrømmere.

[@mikvagn]

@@kasperkjrsgaard1447 tak Kasper - jeg købte faktisk igennem en akvarieforretning til sidst :)

[@tonypeters3385]

Great info Andy, and doesn't she sound sweet?

[@ANDY5]

+Tony Peters Sure does Tony

[@fortj3]

Are you running inline fuel filters between the petcocks and the carbs?

[@ANDY5]

No, but I should be

[@fortj3]

@@ANDY5 I'm running two of them, because the CVKs HATE any debris. I'd love to run a low pressure electric fuel pump, just to get all air out of the filters and keep them completely full of fuel.

[@ivosmoky3404]

Hi Andy! Why not Keihen.Just asking.

[@ANDY5]

And a reasonable question at that. No particular reason mate, I knew these were available for the FJ1100 previously so I just gravitated straight to them. You could say the same thing about why not Lectron too, thanks for tuning in, Andy

[@brynbull6942]

Hi I've got a cb250 n I'm trying to run it on pod filters and got seem to get it to run properly I've changed the main jet from a 105 to a 120 and the pilot jet from a 38 to a 72 and it's still running lean the exhaust headers are getting rellay hot any advice would be great thanks

[@ANDY5]

What year and what carburetors?

[@brynbull6942]

It's a 1982 Klein carbs

[@ANDY5]

I don’t have much experience with them, I had similar carbs on my CB450 but it was all factory. Can I suggest that you try reaching out to a Honda specialist? Two KZbinrs spring to mind, Cody at Motorcycle MD and the boys at Common Motor Collective. But be warned, trying to diagnose bike problems by proxy is very difficult. I would also suggest that you ensure your ignition is all good. There is an old saying, 90% of carburetor problems are electrical.

[@auxtian]

XSellent job

[@ANDY5]

+Christian Raith Thanks mate :)

[@donaldwainwright]

I had k&n on mine

[@agamurtuza8963]

Hi Andy what fuel line clamps did you use. Thanks

[@ANDY5]

Hi Aga, they are called Cobra clamps mate. I think a company called Norma make them. They’re excellent clamps.

[@agamurtuza8963]

Andy's Motorcycle Obsessions thanks so much Andy I like your work very meticulous mate keep up the good work. Merry Christmas

[@agamurtuza8963]

Andy's Motorcycle Obsessions mate I'm not been able to find on eBay cobra clamps all I see is regular clumps. Is there any part no. Love those just not been able to find it. Thanks

[@ANDY5]

@@agamurtuza8963 try this www.ebay.com.au/sch/i.html?_from=R40&_nkw=Norma+Cobra+Hose+Clips&_sacat=0&LH_TitleDesc=0&rt=nc&LH_PrefLoc=2

[@yankeedoodle880]

Sounds a lot smoother at low end Andy, good decision to go with the Mikuni's, think you're going to be in the shit mate, when the wife see's your Paypal account...... good work mate :)

[@ANDY5]

+yankee doodle I'm always in the shit, it's just the depth that varies. Nah she's cool.

[@fortj3]

+Andy's Motorcycle Obsessions Yer funny. I'm loving your XS11 vids. I'm looking at an '81 XS1100 Venturer for $2,000.00 US that looks to have been very well cared for. Just have to decide whether to leave the touring gear on it or make it into a standard or a cafe.

[@ANDY5]

Go with your heart mate

[@fortj3]

Andy's Motorcycle Obsessions My heart says I need one of each. My bank account says one is enough

[@CarlJohnson-km8zr]

i have a kz750 and everyone says that the rs34 is too big and hard to tune, and ive heard different....anyone have any input? If you can adjust the accel pump and change jets....not sure why it won't work with a 750?

[@ANDY5]

G’day Carl, CFM is the issue. If the engine is over carbureted the air speed through the venturi and the subsequent ineffective pressure drop is the problem. No amount of jetting will compensate if the fuel won’t lift out of the float bowl.

[@ANDY5]

Having said that Mikuni do list the RS34 for KZ750. 115 main jet, P-4 needle, position #3 needle clip, 17.5 pilot jet, 1/4 to 1/2 turn on the pilot screw. Mikuni kit #RS34-D21-K

[@CarlJohnson-km8zr]

@@ANDY5 yes ive done some research and a lot of guys like the Keihin cr over the rs for the cr has smaller bore options, but for me a set of cr 29mm is over $1000 US and the RS is around $650 US... and personally i like the looks of the RS carbs for the flat slide.

[@llewvirtue861]

Not once did you mention how much, does your wife monitor your motorcycle spending like mine, maybe she is a subscriber My wife asks how many bikes can you ride at any one time

[@ANDY5]

My wife is pretty awesome, and I don’t keep receipts

[@jimaylward2396]

well done Andy worth every penny im sure . Now take herself for a short spin and all will be forgiven i hope. ? 😤😎

[@ANDY5]

+Jim Aylward Nothing to forgive mate, I am a lucky man :)

[@QuickShiftMoto1]

I completed my build (WISECO 1196 kit w/RS36 flat sliders from Tom at MikuniOz) Summary on my channel: kzbin.info/www/bejne/Z17cq3V9h8SCl5Ysi=IaXJV0482aZm4yYl A question if I may: Ignition vacuum advance on the OEM Mik BS34 CV carbs is ported from an orfice just behind the throttle plate on carb 2. So at idle there isn't (and shouldn't be) any vacuum advance but vacuum advance starts as soon as you open the throttle blades. On the Mik RS36 there is no such port so at idle you have full vac advance which is not good for a smooth, stable and low idle. What did you do and did you solve this issue or do you just live with it? Thanks!!

[@ANDY5]

If you watch the video until the end I actually cover this. And it does work well.

[@QuickShiftMoto1]

@@ANDY5 I don’t want to haggle you with minutia but I have watched all you videos and they were absolutely instrumental for my rebuild. I learned so much and am grateful. My block was cracked at the rear clamp bolt below the oil line because the previous owner unbolted the head bolts first. Anyways. I did your irrigation valve mod and it works fine EXCEPT at idle. Since the vac comes from the spigot you have a full vac signal to the advance unit and that makes for a terrible idle. On The OEM carbs the vac port is closed at idle by the throttle blade. I installed two irrigation valves. One to dampen the vacuum signal and a second one to shut it off like when riding around town. With vacuum the ignition has 26° advance at idle that’s way too much. You only need the 10° static advance for a smooth idle. I resigned myself to the fact That ported vacuum (vacuum signal that only is given when the throttle slightly open) is impossible with the RS 36 carbs. People that modify the ZRX carbs. actually drill the carbs for a ported signal to correctly provide vacuum advance. I could eliminate vacuum advance but the fuel mileage drops into the low 30s or even 20s.

[@LarryBrumbalow-th4jz]

Ok

[@stuartmorton3768]

Adjust the slide needles

[@JamesR23]

I have 2x extra mikuni carbs (34mm cv) and 1x keihns if anyone wants to buy

[@LarryBrumbalow-th4jz]

Ok