Firestorm Zeda 100 YD100 Engine Tear Down, Review, and Pre-Install--Must Watch To Save Yourself 

Any pics or on fb

Any pics or on fb

any updates?

Dang! Hope you are alright! I sell a lot of bikes to eatery delivery people. They like the nel lusso with the basket and rack. The yd100 is awesome. I have had zero engine problems and it just keeps getting faster and smoother with every ride! I agree....this engine is enough for most riders. Have fun and I hope your recovery is quick!

& I know where you can get replacement rings & an 0.25mm piston, ringset & pin from when the day eventually comes for a rering or a bore job on that thin cylinder jug..Trev New Zealand 🇳🇿🙃🤗

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Happened to me too. Don't reuse the clips for the piston. If you do be very careful with them. 85 dollar mistake for me.

They’re easy to do man

Dumbo

Just make sure you can see the clips through the gaps of the rings. Figured it out after 10 min. Good luck. :)

@@aleksandramakari see the wrist pin piston clips? Or you mean the little pins on the piston itself that fit in the gap of the rings?

Can you please share the link bro, i need one too

How did it go for you?

It changes the Port timing by effectively moving ALL the ports up from the piston crown/head & skirt windows effectively detuning it slightly.... there's a reason there's 2 gaskets there: the Asians don't do something for nothing, it's costs them !. Trev New Zealand 🇳🇿🙃😇

PS if you can get a STK bore size replacement Piston you can effectively do a partial porting job by lowering the piston top/Crown 1 - 2mm if there's enough meat (start off with 1mm removed from the width of the exhaust port) & raise & lower the Transfer windows in the Piston skirt sides about a mm top & bottom & even widen them the same amount.,....for an ex Honda Elsinore 125 MX'ER. Trev NZ 🇳🇿🤗

Jim...use Some Isky Moly lube/grease or something similar for running in flat tappet non roller Camshafts..hope this helps Trev New Zealand 🇳🇿😎 home of the world's fastest old Indian 🤗

Thanks for watching! Yes, it will fit, but don't get the crappy pull start that will break after 2-4 times. Get the pull start that has the thicker spring loaded arms. These are typically found with two decorative line grooves molded onto the face plate. Hope this helps!

Hey! I agree. The YD has a lot of low end torque--more than enough to spare. So, for my next free-time build, I am going to use the YD100 with the high speed carb. Then I will lower the stock 44t sprocket to a low 30’s tooth sprocket to get top end speed, then I will add an MZ exhaust, use the OZ magneto, ngk plug, 8mm copper core spark wire, and finish it off with possibly an internal velocity stack (may have to adjust the jet depending on outcome). I know there is more I can do, but at a certain point, it becomes overkill for a bike... Get a motorcycle if you want more, right? Overall, I really enjoy this engines power. Definitely a step up in my opinion.

@@SouthernCustomCC I totally agree my dude ....at a point it is ova kill .......I already have fast bikes with real gears ...but they are def worth having a play with

Sorry to hear that, man. I made this just for you. A little late for you, but I hope it helps for the future! ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-YoAktFChW1k.html

turn the idle screw down or check throttle cable adjustment

What jets are u running

Could be an air leak somewhere around the carb

@@joshrichards8889 F86 sabre jet and mig 15 try those too

It depends on when you bought it and who you bought it from. If you have already installed yours and have some hundred miles on it, you should be alright--hopefully. If you bought one more recently, I would say chances are that you'll be okay. If you bought yours close to a year ago, I'd think about it too. Either way, best of luck!

Don,t be foolish don,t do it if it aint broke don,t fix it

Lol! I know what you mean. I am still waiting on stuff I ordered 2 months ago 😞. No sweat for you, though! Shipping days are Tuesday and Friday with Fedex. Yours will go out Friday and be there in (hopefully) 4-5 days due to delays. It won't be a month 😎👍. Thanks for your purchase and support! Happy building.

Good deal! 16:1 for about 75 miles. Keep it @ around 20. Then you can go 20:1, 32:1, or even richer if you want but I like oil...it gives good lubrication when the engine gets hot.

Thanks for watching. Yes, the wrist pin is the same. The bearing is 10x14x15.

Tony Arlt : Hey, thanks for watching! I like this motor for the torque and low end power. If you pair this motor with an MZ pipe, you'll really fly! The standard 80cc engines are cool because they are modifiable such as a high compression heads. To be honest, the more modified your engine is, the more attention and tuning you will have to do to it on a regular basis. So with the yd100, you get the low end power and a decent top speed, which helps tremendously if you live in a start and stop or hilly area. If you buy one this weekend they are $149 for the entire kit. Either way, have fun!

Will the engine still run if the piston is backwards?

@@christophercarter7832 I'm also wondering this

Yes the engine would still run with the piston backwards. It's marked to go together a certain way, but either way is identical unless it's a windowed piston.

So old bro

Robert Duncan : Hey!, Thanks for watching. Please feel free to contact me through my website...id be happy to give you my 2 cents!

Hey, thanks for tuning in! Head torque is debatable--depending on gasket size--but 12-14 ft/lbs will work. And I am not sure what other two nuts you are referring to at he moment..the exhaust? The intake?

Thanks for watching. Well…the dio reed setup is definitely a good set up. You’d get some more low end, better band results, and it looks sweet too! You’d still want to buy an exhaust upgrade for the dio setup otherwise you miss out on some of the benefits of what you paid for. The yd is a bit choppy, but with the exhaust, it calms it down a bit and you have good low end torque out of the box. Really, the choice is yours, just make sure you spend time to set your kit up properly. Happy building

Use one gasket. DO NOT LOCKTITE YOUR HEAD BOLTS OR THE STUDS. Just torque your head to 12-13 ft.lbs

@@SouthernCustomCC thanks a bunch! :) Why not use loctite on the studs? And also how do I know how tight I have to make them when I have no torque wrench?

@@SouthernCustomCC I also put two stroke oil inside the cylinder, on the piston and on the piston walls, is that good?

And should I use wheel bearing grease on the clutch, inside the motor?

They do not, they are 2 strokes so the oil is in the gas

Hey Tony: yes, the jet is larger at .72mm and port chambers @ 3mm. Overall, better gas and air flow.

I believe so. The kits will be coming with a 44t. There is so much torque and low end power that you could drop down to the 30’s, and benefit in both low and top end. Put an MZ pipe on it and you'll see huge benefits too.

I've hit 41mph on a Gt80, porting does alot of the work, and I'm on a 36t, stock carb and exhaust and it's rebuilt with 7,500 with just new lightweight piston. Still going strong! Keep it up Team 2T!

I hit 52mph

46 mph via GPS on 22:1

Yes! I have done that too. Definitely helps it breathe. I put probably 10 holes in mine lol. I have also heard people drill into the exhaust pipe bottom cap

I just run my fingers around the rings starting at the exhaust side till i get to the sides of the piston and i set the exhaust side of the piston in the cylinder and use the other hands nails to seat the rings on the opposite side

@@joshrichards8889 basically how I do it, but with short nails so theres a struggle

Charles Everest: LOL!!! SO TRUE!!! It is no different for this engine either...50mm bore and 40mm stroke...therefore math says it's a 78.5cc 😂...

Benjamin Thompson : Thanks for being a part of the community! Your input is greatly appreciated. So even though 1-2mm doesn't seem like much, an extra gasket can raise the jug 1-2mm and completely alter the intake and exhaust timing. Yes, this bike does not have valves, but if you consider the intake port and the exhaust ports are like valves, then the picture becomes clearer. On the standard 2 stroke jug, there is room for error between the heights of the exhaust and intake ports. That is why people port them out to get more power. On these engines, they are more precise on the timing heights of the intake and exhaust, which if altered, will mess up your timing. That means when your magneto is on the fire position and your piston is not at the right place, you'll have jitters and misfire. Also, with an extra gasket, you lessen the compression area during the fire stage of the rotation = less power/torque. There are a lot more specific numbers you can check out, but his was just a quick explanation. I hope it helps answer your question. Thanks again for watching!

Wow thank you! Makes complete sense now!

I can't listen to this video. Need lapel microphone.

Thanks for watching. Not yet, but I assume one will be coming out in the future because the popularity of this engine has exploded lately. If they do this, there will be a height clearance issue though. It wouldn't be able to fit in most setups because of the larger sized CNC heads.

^^^100% truth^^^ 🙌

2 cycle. High rpm, easy to work on, but low end torq and very gas thirsty. 4 cycle. Reliable, sips gas, good low end torq, but hard to work on and has weak power at high rpm, larger engine casing. Just my thoughts.

Yeah there trying to get you to buy faster lol cause it won't last long .

Raven Cruz : hey, thanks for watching! I am currently in the process of this juxtaposition. Stay tuned!!! 👍

The white wire is auxiliary. There to power a low level 3-6v light. But if it is used, it will drain power from the engine. It is better to use a battery powered light.

Nice thanks for the recommendation bro! I cleaned up the ports on my YD100 a lot, it took me about 3.5 hours to do. But since doing that, it pops off and starts super easily.

I know and trust bicycle-engines.com and they have good prices. Gas bike.net has a reed valve set up with the yd100 but it is like $220 right now. Hope that points you in a good direction! Thanks

Don't go through gasbike. Net if you get one of these motors I bought one I only got one I feel like because I called in and threatened to report them because I have not received a tracking number or anything within 2 weeks and it was supposed to be sent on the 6th of the month and it ended up being sent a day after my brother ordered it the day before the same motor and then you called in and complained and got his hella fast which makes no sense anyways just a warning the motor comes it's all good except they forget a lock washer for the piston comes with one but is missing a second one I luckily had an old motor I took one off of to replace it my brothers came the same way and I ordered a chain tensioner and they did not come through on that in my order it was written on the box but not in the box bikeberry is not bad half the time I find I've gone through Kings Motorsports they seem to be a little better but I think they are the same company as gasbike since they have the same phone numbers I would go with bikeberry and or search outside and if anyone gets any good tips or leads let me know too as well but that's what I found to be true if you want to take the chance on gasbike. Net 8200 cc motorized bike engine kit it was a little over two hundred a lot cheaper than usual compared to the 300 400 dollar kits that you find

Is this the actual zeda 100 motor that is sold on bicycle engines.com?

I bought mine online bicycleengines.com. ZEDA FIRESTORM 100 an recieved in 4 dayS EVERYTHING WAS RIGHT ON .THE PISTON GREAT NOT BACKWARDS PORTS CLEAN JUST BEST FIRST ENGINE EVER TY .HOOE EVERYONE ELSE ENJOYS THERES LIKE I DO .WOOOOO. HHHHOOOO

Hey, Boss! Thanks for watching. I’d start with the magnet and then the magneto. Let me know how it goes from there

@@SouthernCustomCC Do you think the Magneto would really make it rev High? I have everything upgraded but my Magneto maybe if I put my upgraded Magneto I have in there instead it would run different are you saying possibly cuz that would be something I could do right now to try and thank you for replying and offering an opinion anything helps

Yeah.... as long as you are confident it is not your throttle cable getting stuck, the slide in the carb is lined up correctly, the idle screw is adjusted correctly, and you are sure that there are no intake or exhaust gasket leaks...then that is where I would go next. Best of luck to you!

@@SouthernCustomCC so I tried I've graded Magneto I think there's something wrong with me and you know did not work or CBI so I replaced everything it starts up again but still has High Rev a little less worse but still really when I give it gas it holds the gas out for way too long like there's something trapped

Can anyone please tell me where i can buy new set of piston rings. I have the new yd100cf took apart to make sure piston was ok and putting back together The rings broke.please help anyone.

David foss, cdh or zeda should have them cdh does just went on there site 😁

@@davids_garage what is cdh?

It will run. It will have no noticeable difference. But after time when the rings loosen up a bit and shrink, the tip of the ring opening may hit the exhaust port opening and bust a ring and then destroy the engine. It's a risk not a guarantee.

Thank you. I took the cylinder off to have a look just in case The piston was on the right way but I’m glad now I don’t have to worry about it. Cheers!

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