Raise exhaust port, widen. Lower intake, widen. You can also check tdc and see if any of the piston skirt is blocking intake, if so just file out a small bit so it's completely unobstructed at tdc. Intake and transfers should be left fairly rough, only the exhaust should be polished. Only surfaces that are exposed to combusted mixture should be polished to reduce residue buildup- the intake is best rough so it helps with fuel/air atomization. Not rough with burrs mind you, just textured and clean.

Already ready to come home! Cute seeing kitty in the video 😄 love y'all!

2:17- lmfao🤣 mine was a bee, spit that thing out quick. Your videos help a lot man. Well explained, and you are one of the few that goes in depth about your projects. Thanks for your channel, every vid is highly anticipated.

Great info. Look forward to Pt 2. Thx man....

you did a great job cleaning and rebuilding the motor

The cases looked beautiful!

Nice clean job 👍

just can't get enough of your videos man good work. I have learned a lot. really going back and forth on the wc 80 or a yd 100, and if so amazon yd 100? wc 80 seem like a safer bet right now. might have to wait and see how your new wc 80 goes. good stuff. riding a 1990s ish DimondBack. thanks!!

i love you videos Man the bee/wasp comment was amazing :)

Nice. Very nice, finally a quality video for us YD fans 🥳. Sub'd for sure 👍. Gonna have to post me a quick vid of the build 😉🤙.

Well, nice to see someone actually thinking on not using the yd100, for it's made for with a jug, which is good and terrible for us bike guys. I bought my zeda 80 40³ in December and slowly put my bike together (Schwinn occ stingray) but recently found my stock exhaust pipe cracked, so decided to use the flex pipe till I decided what pipe I need. 36 tooth sprocket is recommended for both engines but if you want to pull more speeds, get an HP carb and put a mid 60 jet. As for plugs, get the br6hs or 7, for 2 strokes need colder plugs. The case matching is the first type of port you want to do actually (and I'm probably going to do soon) before learning advanced stuff. Also get a balanced crank, it removes vibration and problems.

the flex pipe added more torque but slowed my bike down .. normally run it with stock exhaust with baffle removed and i hit 43 with the flex exhaust i only hit 34

Wow.... Smh.. my Yd100 is doing the exact same thing. Im about to put it on the back burner ! I just ordered a New Motor from CMB.( a zeda w/ window piston & reed.. CNC head..I cant wait to see what the problem is & How you fixed it.. Thx for sharing.. always informative.

Haha yeah I seen my dad drink something with a bee in it before and let's just say he was just as confused as he was pissed.

That's it I'm sending you my engine and $$ so you can port it! 😂😂 awesomeee work bro!!

Very good video

Nice video👍

can instantly tell this things powerband is way wider when ported and plished, cant wait to do this with a new 49mm g4 cylinder, i also run a mz65 copy on stock g4 47mm no port and polish no nothing gets 30mph STOCK on stock nt carb

Nice video

u da man Hover

i have a 28 tooth sprocket and it seems to do pretty good for me but i don't have many hills where i live or i probably go with a 32 tooth

Well im not surprised about the yd 100 having design flaws im sure it will be revised Maybe in a couple of years it will be better Got busy working on my shotgun restoration video so havent had time to mess with the tanaka outboard yet Hover i hope you check the videos out there on my channel

If I could honestly afford to buy a shed for a shop for you I would totally do it!

Nice

nice , :P cheers

Amazon sells new two-piece head has twin spark plugs and jug for yd100 by cdhpower

Hell yeah family guy and motorized bikes

I'm buying a 💯 on the 1st and extra stuff for it

Hey i bought an eBay motor kit and a bike cause you gave me the great idea to do this but i didn't make the smart decision. ill get to my question, the chain that came with my kit is the wrong one and in bent a bit so it wont stay on, it also doesn't bend properly around the front sprocket. do you have a chain recommendation?

Not sure where else to ask at the moment but, does anyone know where to get good replacement wrist pin clips for the yd-100, and what size?

Dude.. I got stung twice on the lip at the gun range.. I learned that lesson.. I'm just sayin..😂🤣

Where did you get the gasket paper?

I only get 28 mph with my yd100 with the stock pipe and about 34 with a mz pipe... I want to do port work... do you have any videos getting indepth on it?

Do you have a link to the new clips you used

Nice video! Are you in the Winfield area? That bridge that you are on towards the end of the video looks familiar.

My ydv100 is on its 4 tank of gas "it's new" it's starting to make noise like the piston Rings are trashed but idk where it's coming from.. please help,new to the gas bike life

My engine is bogging how can i fix it so i can have more power at full throttle? My name is eric and i have same bike as you the huffy cranbrook with 80cc 44t

Watching this I realized I got some powerful stock bikes my first ever engine pure stock top out at 50mph My current one also pure stock (before cylinder got damaged) could go 43+mph and still felt like more to give

Have you changed the jets on any of your carbs? Or just run them stock?

It doesn't really matters how much of the ports is bellow the piston in BDC. What is important is how much is above them.

Hove ur getting a lil ballsy there where is all the safety gear gone to?

Where are you buying spares from? Such as bearings, gaskets, etc.

Which app do you use for the speedometer and the odometer

What’s the butt dyno say? Did she get faster?hard to portray acceleration with a go pro. Ba video as usual 🤘

How do u remove the sproket bearing

What "Zeda KZfaq Channel" are you talking about at 8:05. I can't find it.

Is that a1 piece head

About to start a channel on my bike im going to break it down and rebuild it and redo my 12v system for all my lights

What do you think of the HP carburettor?

What no red green

Where did you get the exhaust from

Where can I get new clips from

I got mask breath at work an I just drunk some coffee

Is yanking ok the throttle like that ok for the bike? Seems like you could build up a lot of pressure that could bend some valves. Same thing happened to my brothers 4 stroke bike.

My yd100 is locked up... it wont engage.. release the clutch

Ever hear of Don Butler? In Oklahoma. Builds engines. On Facebook...

Nice vid but i have to watch IT in 144 p my internet sucks

My bike runs really bad, it spits oil every where and the spark plug is very oily.

I drank a wasp . It stung my lip . Had a fat lip for a couple of days .

Stihl ms440 top end would fit that bottom end. Just saying.

I want a YD 100

Wow and so people run those engines with no air filter at all, say they don't have any problems

Yd100 is got a hole lot of power it will out run the zeda 80 any day of the week well I mint 66cc zeda it. Is what u do to the motor u put money in anything u can make any motor run the most videos i watch they speed run but they don't realize they are going down hill u are going to go fast but I am working on my new build I am making a franklinstain 56mm it is going to be fast that for sure but I love my yd100 good running motor mine been a good one but be careful on the rd hope u get your motor fix

Lol cat like getting ripped off gas fumes 🤨

I can’t for the life of me getting my YD to stop 4 stroking

Why you always peddling?

Nvm

Why dont dirtbikes get destroyed like that. I wonder. They see more mud than you do!