CX500 Tracker Build - Mikuni VM34 Carb Install / Fabricating New Intakes - EP20

[@rulehardgarage9740]

That's vibration also inhibits the ability for the tool to properly work too. You could end up with a off looking pattern developing on the part. Good tip, another great video 👍

[@chiwizards13]

Interested in your jetting when you get this thing running. I might try this setup some day. Currently running stock cx500 carbs and manifolds with cheap spacers on a 650 swapped 1978cx. Keep up the good work.

[@paulsmith643]

Thanks for the filing tip, always drives me insane, so keen to give that a go. 👍

[@jeepingneatus]

Thanks for sharing your knowledge! This build has been very helpful with mine! Enjoying the series.

[@speedmotoco]

Great Build! the VM34's are an easy way to get that bike up and going. WE have a stock manifold vm34 kit that also works on the cx500.

[@BrickHouseBuilds]

Thank ya!

[@robertcapozzi2934]

Do you take ,bikes on. Have a cx 500L modell. I'd love to completely have it rebuilt,just purchased the murray carb kit

[@BrickHouseBuilds]

I appreciate it but no I no longer take on customer bikes.

[@kevinknight5325]

Thanks again for another great video. Why are you using Mikuni carbs instead of the original cx500 carbs?

[@nowde2491]

About 10% increase in power and torque with does carbs, plus better throttle response, as the stock CX carbs are 'diaphragm' carbs, so they rely on engine vacuum to lift the main jet needle away from the main get to regulate the fuel mixture. So basically in a diaphragm carb as you twist the throttle butterfly throttles open the intake tract and cause a low pressure area behind the carb, which in-turn creates a vacuum within the carb diaphragm lifting the slider containing the main jet needle, inherently there is a slight delay which reduces throttle response, the fact that there are 2 components in the way of the airflow into the engine reduces performance. With the mikuni carb the throttle cable is attached directly to the round slide which lifts the needle of the main jet directly, without the need for vacuum or butterflies. The round slide is where the mikuni carbs get their name from. hope that clears up your question nicely.

[@BrickHouseBuilds]

Adam summed it up nicely but yes, increased power, better response, easier to tune. Also just because. We have already done a gl650 engine swap into the cx frame and there is no way to get a set of stock carbs on this thing without custom manifolds so if we are going that far it is a logical move to put better performance oriented carbs on the bike.

[@jackmason9550]

Question: why did you decide to make the manifold so long? Is it to create space for you to fit your hand for the ignition you were talking about under the tank? Or for some other practical purpose? Or you just like how it looks that way? Just curious if there is a practical reason because it looks a little goofy to me but sometimes form must follow function. Not that my opinion matters, just trying to learn and wondering why you did it the way you did in that respect.

[@BrickHouseBuilds]

Hey Jack, a longer manifold creates more torque so that is one aim. I basically built the left manifold as long as I could to fit the air filter behind the shock reservoir. The right was then matched in length so they are equal instead of mismatched from the factory. While the right manifold may be a bit longer, the left is only 1/4-1/2" longer than stock.

[@colbyscott9822]

@@BrickHouseBuilds I know this is true in some cases for the air intake manifold. It works the same for post-mix manifold? I could imagine a scenario where the extra space could cause de-aerosolization of the fuel. (is that a word? lol) Is the longer manifolds something you've done before on this bike, and that's where you're getting the more-torque info? BYW, I'm loving your build. There are some things I'd do differently but this long-format series is what I was looking for to give me a realistic expectation on this kind of project, if I decide to pull the trigger. I'd be looking mostly bolt on parts, since I've never done any welding before. Plus, I live in an apartment but have a garage. So, welding isn't really a realistic expectation for me.

[@BrickHouseBuilds]

@@colbyscott9822 we can what-if all this to death but I'm the one here actually doing this stuff and getting results. Manifold length and how it affects power is an easy Google search. Bike is a monster and makes gobs of torque along with a peak of 61hp at the tire with a factory rating of 64 at the crank so thats saying something.

[@colbyscott9822]

@@BrickHouseBuilds I apologize if I came off rude. I was legitimately curious. I don't know much in that area and just wanted to understand it a little more. I wasn't questioning if you were right or not. So, sorry if it came off that way.

[@BrickHouseBuilds]

@@colbyscott9822 No i apologize too. I reacted before thinking. I just get a lot of comments from people trying to think up reasons things may not work while I'm out here doing it. Sorry I overreacted there

[@markanthonypetra]

Why didn't you the stock carb manifolds?

[@BrickHouseBuilds]

So this is a cx frame with a gl650 engine. This combination never existed from the factory so there are no factory manifolds or carb setups that would fit. I had to make them.

[@sleepyzboy]

awesome build. what size aluminum tubing did you use and where did you get it? thanks!

[@BrickHouseBuilds]

Thank you! Material info is in description

[@sleepyzboy]

@@BrickHouseBuilds oh man. I'm blind haha thanks

[@Kriptalas]

Can you tell me which one is for the cx500? VM34-168 or VM34-275. Thx

[@BrickHouseBuilds]

That I don't know. You could buy an entire kit from Murray's carbs though and save time

[@nicholasmezes5043]

I want to put the VM34 carb my cx500 do I need new intake manifolds for it to work or can I use the stock ones?

[@BrickHouseBuilds]

You need new manifolds. Check out murrays carbs as he makes a very nice vm34 kit that is tuned per your needs.

[@nicholasmezes5043]

Do they just sell the manifolds cuz I already have the carbs

[@BrickHouseBuilds]

@@nicholasmezes5043 He may even if they aren't listed.

[@nicholasmezes5043]

@@BrickHouseBuilds how do I get in contact when I tap email nothing shows up

[@BrickHouseBuilds]

His email address is on there. Also he is all over Facebook and Instagram

[@cainbeeping8480]

Nice

[@BrickHouseBuilds]

🙏🙏

[@librafarris669]

Please, I have the same bike and carburetors. How many turns out is your air screw?!? I need to know so I can fix my only means of transportation!

[@BrickHouseBuilds]

Do you have the Murray's carbs kit?

[@trebor6919]

Mate when you fitted these carbs did you have to change the petcock on the tank to a free flowing one rather than the vacuum one? I'm just about to fit some Mikuni's but am unsure as to whether I'll get fuel flowing.

[@BrickHouseBuilds]

So on the cx tanks you have either a 16mm or 18mm petcock size and on this one I had the 16mm which is what many other models use. I chose a dual outlet petcock from a cb350 which flows well.

[@robertrose6854]

I'm not getting fuel to the carbs due to no vacuum connection from the carbs to the tank.

[@BrickHouseBuilds]

@@robertrose6854 Correct thats how it works if you have a vacuum petcock

[@Jamiekelly2314]

Also what jetting will you be using ?

[@BrickHouseBuilds]

The bike doesnt run so I cant answer that. Once it runs and I can tune it I will discuss the jetting.

[@seanalps8331]

@@BrickHouseBuilds interested in the jetting also

[@Jamiekelly2314]

How you going to pull the 2 throttle cables?

[@BrickHouseBuilds]

I actually have a domino twin pull throttle and twin cables. I didn't even think to mention that!

[@Jamiekelly2314]

Brick House Builds could you link me that?

[@BrickHouseBuilds]

@@Jamiekelly2314 Just hit the revival cycles website and you will find them.

[@nowde2491]

You can get a 2-1 cable too...www.amazon.co.uk/Yamaha-Throttle-Cables-Mikuni-Carburetors/dp/B071NVX53C something like that

[@Fake-moon-landing.]

You don't half repeat yourself when you get into a ramble . I'm like I understood the first time second third and fourth.

[@BrickHouseBuilds]

I try to repeat as sooooooo many people email, message, text, and call me asking very basic questions I've covered in my videos. Generally though I repeat what I feel is important

[@Fake-moon-landing.]

@@BrickHouseBuilds Makes you think if they are that retarded should they be messing with bike's ?

[@BrickHouseBuilds]

You know I have a mentally retarded brother who can't work on bikes or even dress himself. If he was able to in any form like you question I'd be elated!