Unlocking The Firestorm Zeda 80 

Typo on my port timings. Exhaust duration is 170 not 160

The gas bike community has been the most welcoming and helpful enthusiast community I've ever become a part of and in less than 4-5 months I've learned how to do port work match exhaust and intakes to ports balance my cranks and so much more. Darcy and Kurt Smolik in particular have helped me so much with modifying my bike

it's very encouraging to know these engines are durable enough to withstand speeds that high

+1 for the speed warning. I had a motor mount stud fail which caused the chain to snap and wrap around my rear wheel and totaled it ( at around 20 mph. The wheel locked up and i slid around a bit before coming to a stop. I pedaled back home. I can't even imagine that happening at 50mph lol

I watch a lot of RU-vid videos on my phone but when one of your videos come out I make it a point to watch it on my PC for the best experience

Finally, this is truly moving on from stock kit reviews and into engineering. These experiments are of great interest to me and it's not easy to find them, if they exist at all. Got the bell on for your next videos with deluxe pipe, then window piston, etc. Can't wait!

a proper 2 stroke sound, love the sound of expansion chamber resonance

Video Idea- Take apart/cut open a broken CDI and magneto coil, show how they're made, what went wrong and if you can do a cheap easy diy repair and/or improvements by soldering in some new parts and glue gun it back together. Check what gauge wire is used in the 2 & 3 wire magneto coils, how many wraps,if they use varnish coating if you could diy make or repair one fairly easy.

This youTuber man he is the most unbelievable RU-vidr I have ever heard and seen about, First of all very very good information secondly extremely teachable and understandable vedio, I have to give you a big thumbs up and I hope you never turn down your RU-vid channel and stop doing two-stroke engines, very very good Vedio 👍🏽👍🏽👍🏽👍🏽❤️ Swedish big fan here!! 👍🏽🤛🏽

Absolutely would love to hear / see a full breakdown of how to do this. Like a tutorial video.

I really like how you have that bike running and yeah I just don’t understand why he blocked me but thanks for the congratulations I was pretty impressed but watching guys like you help is definitely appreciated ty

Man , THAT BIKE SOuNDS AMAZING (with that exhaust ! )

Sounds like a rage fueled, karate sensei chainsaw. I love it. Seriously, amazing work. Got it revving so high and clean under throttle response and so smooth and buttery under idle. Just great. BTW, I'm like 90% sure that the kit you used is one of many that is actually a 66cc posing as an 80. I *could* be wrong, but it looks almost identical to the "Wai Danie" 2 stroke that I previously bought myself. If so, it makes this build even more impressive. Spot on about the NT. IME, it's built to just give decent power across a broad RPM range on pretty much any 2 stroke. I honestly believe that those who say the NT sucks either A) don't know how to jet and needle set their carb or B) just have beefy ass engines that genuinely warrant a flat carb slide on the higher end of size. the NT has been around since the 30's for a reason. It's the classic, definitive reliable, versatile carb. Besides, I honestly think that cylinder polishing, porting and exhaust optimisation are all way more important for making power than the carb. EDIT: It looks like the Firestorm Zeda 80 has a taller cylinder assembly than I first thought. Assuming a piston stroke length higher than I thought too, then it's a genuine 80cc. TBF, the kit overall has a lot of obviously better quality parts than average. Based on this vid and my googling of it, I'd be tempted at current market prices.* *If I didn't have a 100cc trail bike build already in progress.

I use felpro gasket paper with copper gasket coating, use the spray type and do about 3-5 coats on each side and let it set before installing and that paper will last a long long time. Ive been making my own gaskets for my bikes/cars and that's the only way I make mine and never had one fail on me unless I was rough with removing it

14:47 I love how you went from being super conservative on the throttle to feeling the need to see how fast and hard she could pull the moment that trucker obnoxiously flexed on you. It's weird that your freeway limit is 55mph but people in large vehicles blast along like this on pretty narrow, curvy roads. Glad you're such a safety conscious rider, tbh.

Thank you for doing this build, a lot of us want to have these options but nobody really has broken down how the different pieces go together it’s always port this reed that , better pipe but nothing on how they work together

Great Port work especially using hand type tools! The exhaust port looked nice and wide which I think is just as important as the rest and wow a real pipe to top it off. Great video and that thing sounds perfect. Holly s..t!

I slapped the YD100 on a Kent and while still breaking it in, currently at around 50 miles, and more than happy I might try some of this on the next identical build to compare the performance in real time.

Them zedas are strong motors, my zeda 66/80 triple 40 is just like yours. I topped out at 49mph (huffy beach cruiser frame and wheels) and still had plenty of mid range to push it higher.

I use those anti chain locks on both of my bikes and I think they work great. I use red thread lock on the tiny bolts and they have never budged

Thanks for the shoutout!

I always go back to your videos to see what I did wrong, and I managed to find out what I did wrong just by watching these videos

Here's my theory: 2 strokes, by Nature is fickle critters, especially these cheap, Chinese items that have room for improvements in just about every aspect, and to nail every one would be a remarkable achievement indeed. Me personally, I'm of the school of thought that I should just leave well enough alone...I put an 'HP' Carb on one bike, and can't for the life of me get that thing to idle, although it pulls like a tractor, gobs of low end torque...but she just. won't. IDLE! Then I have another bike, another Zeda80, stone stock with the 'NT' Carb, that actually ran great with the stock #70 jet, and I took the needle and bottomed it out, and oh-my-GOD what a difference! No more '4-stroking', although it is still in break-in, but just resetting the needle cured a common issue with these at break-in. I DO have a spare YD100 motor I want to try to mess with Porting, etc., we shall see...

Sounds really good.With the reeds only opening due to the draw on intake,I'm thinking the channel cut doesn't allow enough suction at idle,to open the reed enough for standard idle speed.?.As you said,'we'll see what happens with the windowed piston and the different cylinder mod'.Thanks LA. You really have shown allot of great info,and videos.

0:07 that sounds good I can’t wait to get mines sounding like that

I take it all back. Some footage was repeated from another video, but I am learning a lot

Very enticing. Sounds awesome. Did I mentioned enticing? Thanks for the ride and a happy New Year to you and yours.

What you said at a minute and 20 seconds is something i consider because speed is great and all however its getting to the point where im scared to ride the bike because of how dangerous it feels

Ok let’s go, I seen the short earlier this week.

Thanks for this video it has made me want to get this engine because my old engine the gears seized and I fell like this will be a better engine for me

I'm getting my zada 80 soon! I'm as excited as a 2 year old!

Haven’t even watched the video yet but I’m gonna like the video

Good job! What a feeling of accomplishment!

Beautiful port work!

У меня тоже карбюратор pz19, 75 jet из стандартной комплектации карбюратора. Иглу опустил на самый низкий уровень, и закрутил обогатитель смеси до конца. И стало работать идеально в любых диапазонах оборотов, и на холостом ходу тоже. Так же стоит лепестковый клапан

Awesome!! Great info man!! Best motorized bike channel on RU-vid!!!!!

Oh that sound is beautiful

Haven't been on but glad you finally hit 50 mph

The idle issue you're having is something I've also experienced. In my case it was an air leak where the carb attaches to the reed valve. I couldn't get the rubber hose and hose clamps to stop leaking. As an experiment I used hot glue and tape to seal it up and had no problems idling. I also have to use a 40 pilot with a 16mm carb and the spark plug is very black and wet, but if I leaned it out any it doesn't idle. That's why I ordered a reed valve that I can simply clamp an nt carb to without the hose clamp nonsense.

Epic my man!!

what up LA nice job on the build! i just now got around to watching the full video,cant tell you how much i enjoyed watching you open your presents me and the guys sent.when you get older it is indeed the little things in life that matter and watching how happy you where that someone thought of you for all you do for us is the best Christmas present i got this year.keep up the great videos and thanks for all your hard work. =|Machine|=

That's awesome brother I'd like to see you compare that pipe to the clone also...I've heard Kirk and a few others say a stock pipe will work better than the mz clone but I know for a fact that it won't...I've built 7 of these and I've ran every pipe they sell on Amazon except the real mz and the mz clone works better than all of them..I just recently got a new wc80 but I haven't put it on yet I had to get it cut down to fit my Cranbrook the header was too long and it hit the front tire.. can't wait to see how it does... thanks for your video brother I look forward to seeing the next one

Hit 51 on the nt

9:20 those roads are absolutely gorgeous. Is there any better feeling than ripping along on a high power to weight ratio 2 wheeler on blacktop that smooth? Absolute bliss.

im not an expert but from what ive heard crankcase stuffing increases the pressure and therefore speeding up the fuel/air mixtures velocity inside the transfer ports resulting in more power in the higher rpm ranges.

The reed keeps any unwanted blowback through the intake. I also believe it creates a little bit more atomization

That's why I need a helmet

Love the video

What's up my brother from LA we watch you all the time this is where I learned my dues and don'ts I balanced my crank the same way you did and it is smoother don't know the total outcome yet haven't broken in how come you don't use a high compression head

Awesome

That must be pretty scary at that speed. The fastest I've pedaled a bike downhill was 33 mph. That was feeling sketchy to me, especially on Louisiana roads.

I have some decent experience and knowledge with the china doll motors for the past month and bit of owning a motorized bike but yesterday my motorized bike was stolen sadly I do have another build which is almost done but I want to build something like this one of those fast bikes seem Amazing

Would like to see an experiment video with this pipe in particular. Would like to know if you could find a smaller id tube to step down the stinger's Inner Diameter. I've ran this pipe and from what I learned stinger length does practically nothing. I've noticed mopeds have a smaller I.D. before the silencer and their pipe's work really well with a ported motor. Changing the runner length on this pipe WILL effect performance from my findings though.

It definitely helps when people throw free parts at you. And the phantom 85 man went awal or blocked me For some dumbass reason whatever I also asked you several questions and you answered questions before an after mine but not mine I could use some help

ok, i'll put some of my theory as well as some knowledge that i have. The idle issue could be either a small idle jet or an air leak, the trenched cylinder does not matter. A windowed piston is preferred over a trench for lenght and flow reasons that are too complicated to explain in short. A windowed piston can be made even with an 8mm hole, the important part is that it must be bigger than the equivalent area of the third transfer and there has not to be sharp spot on the inside and the outside of the piston. Try with some sandpaper. Timing: the exhaust duration is too low for that transfer: on reed you should be at total transfer duration + 50 degrees (should be + 60 but with that value you will have less mid and no low) The main reason why reed valve exist is for smoothness of operation, because it adjust automatically the intake timings and the intake size to match the engine request. That can be translated in more smoothness. The piston port intake system is better for atomization and power, but lack on everything else. The reason behind the jump of power over the piston port is due to the third transfer that improve the flow from carter to cylinder because 3 is better than 2. The 2 wrong thing that you did are: boost port higher than transfer port and stuffing the case. Onto the second: cranckcase volume on those bike is lower than a original minarelli so there is no reason in doeing that because a smaller cranck volume is good for low rpm and the opposite is true for high rpm. Usually it should be 1.5 to 1.8 times bigger than the cylinder volume and on those engine it is not, it's more like 1.3 so no need to stuffing it. The boost port height respect to transfer port height is determinant for the character of the engine: below the transfer port = better torque before the exhaust start working so better low and mid torque; at the transfer port level = neutral response to the pipe; higher than transfer port = more top end power. Hope that this can be useful and please, use a cnc head or that engine will overheat!

I love my motorized bicycle it amazes me every time I ride it it is so awesome it is dependable it starts every single time no issues gets me where I'm going never any real major problems the only problems I do have are with the bicycle itself never any motor or engine problems it's crazy I wish I would have discovered these engines years ago I wouldn't have wasted so much money on gas putting in these trucks and cars I go everywhere on my bicycle now my explorer sitting in the under a tree collecting acorns and getting squirrels nest built in it I don't even drive it anymore but I'm not selling it so don't ask

I wonder if road bike wheels and tires would make it faster it probably would but would it be worth the cost?

That is cool! Nice video. I think it is the real MZ65 pipe. It helps increase power.

i will be building my 1st gas bike. over thanksgiving. just want to mention that those spoke rims could really let go at 50 mph. i am going to be happy going 25 mph. but thinking of getting mag rims if they exist and can be included in the build. speed is fun, but please be carefull you guys. yes i am old and whiped out on a harley going only 20 mph and i was a skilled rider. still have scar on my thumb, it hurt at 20 mph.

Crazy how much the cops hate those things around here

Too much fuel intake as you thought. I put the small reed for a regular 40mm intake jug. Use a double window piston, and then try tuning that carb. I don’t port my intake. I only port my exhaust 1mm top and sides. I get a little bit better bottom end and it idles better. But the more you go for top speed over mid and low end, that’s exactly what you get. Oh and all the reed does is prevent blowback into the carb on the compression stroke. Helps with compression and gives better air fuel mix.

adjust the accelerator cable well, it loosens at the end that influences the results 👍🚴

My primary question is are you compelled to fit a front disc brake when hitting 50mph on your mini crotch rocket? I bet the answer is yes. As far as low rpm torque and drivability are concerned, since two stroke engines operate on the principle of resonant frequency, the solution to your problem may be to make an intake tract with a three inch long neck to create more of a swirl and vacuum effect similar to the human windpipe. When used in conjunction with your carburetor and reed valve, you'll be stunned how much smoother and accelerative your two wheeled contraption will become. It should restore drivability and prove to be more street able and user friendly. Don't be surprised if you make an extra horse in the process either. Please wear a motorcycle grade helmet and a jacket just in case you become unseated. Anything over 25 mph can kill you if you collide with an immovable object. 🤓 Happy motoring.

Is there any reason to use the case stuffers without port work? Also, what reed valve works best? What Dremel bits do you use for port work? Thanks

Dude I love your videos can you do a video on dioreeds or the zeda 80 dio redd kit or something but like do what ever you want! Have a super Day and remeber that you always make my day!

Hi ive got a question...well below your knowledge im sure...1st let me say i used to race/modify early stand up jet ski's pre reed valve...i used to take a kawasaki 440cc, have the crank trued and balanced...use a lightendaluminum flywheel, drive shaft and ss lightened prop with aftermarket ocean pro jet pump and dual nozzle..BUT I used a 550cc top end...dual ring pistons..decked 550 head...OP,westcoast, and others. I liked piston port as it was moreforgiving as long as I left enuff to hold the rings in on exhaust side porting...I also liked a kein 42mm or mekuni 44 mm carb with idle plate removed and pivot holes plugged.. I blocked off my fuel return line so all gas was available and helped idle...i forget the jetsbut is N/A for bike motors...lost the 2 stroke reservoir and only did premix...Now as far as porting a piston port motor, you need to have some to play with or a stencil kit to port it right...WHEN I went to 550 cc reed engines the pedals mist the 02 and fuel and u get a better burn, idle, and throttle response...this was the same for my 650's and 750's...they ran much better with reeds. Anyways I bought a Genesis ONYX or OneX as name changed..its 1 speed beach cruiser, aluminum frame, 29" wheels... I know there are vids on you tube showing it converted to 2 stroke, and 4 stroke motors. But the only brake is a rear coaster brake...dont want that..i want the rear freewheel and not where you just take out the centrifugal pads.. I want like bmx freewheel...and since mine didnt come with any front brakes, I want to add either rim brakes like 10 speeds and mountain bikes (problem is no hole in fork and 26" brakes are common and 29" fat tire are not as easy or cheap to find..Also want brakes in rear after going freewheel..also no mounting point btw...so was wondering IF i can set up freewheel and disk brakes front and rear AND still be able to add engine kit and drive sprocket. or where to get a freewheel hub and if i have to add rim brakes to the 29" fat tire/rim Do you have any suggestions? not looking to spend a ton of money

I had the same problem with one of my engines not idling and I changed everything trying to fix it and it turned out to be my base gasket was leaking just a little I resealed it with some ultra grey and that was it

20:21 seems like your throttle wire is coming out a bit from the throttle itself 😂

Nice disclaimer

Lol I love seeing how others record the different clearances, squish got me I Always called it "crush", for pretty much everything I used plastigage to measure. I was also wondering if thrust is an issue on that small a crank?

Shiiiiiiit dude. If this thing goes 50 plus. I can only imagine what the 100cc version could do.

Nice run 🚲💨💨💨 you should have left the speed meter on the bike handlebars or your cell phone for we could see the speed while you're riding 💨💨💨💯🤙👍 that would have been cool seeing 0 to 50

Did you see my portwork video on the LD90 on Facebook? The idle issue is the boost port*

I bought the bbr 80/100 and finally got to give her full throttle and its a little faster than i thought. Think im gonna take the baffle out of the pipe and see how she pulls

Which carb jet did you use for the PZ19

Can you try a normal expansion chamber pls

Hey can you please tell me where you got that piece of CNC machined motorized chain lock is it says on the package but if I'm not mistaken that's what goes under the clutch case bucking bar cover I would rather use that than the epoxy JB weld that I'm fixing to use on my Firestorm zeta just wanted to say I have been subscribed to you for quite a while now this is something I've been into for a long time but never got around until doing it here recently and have watched months and months almost six or eight months now because I want to do everything right the first time and try to get it as close as possible I really appreciate your channel I've learned so much from watching you

So I have a 29 inch huffy millennial , with a ridgeyard 49-50cc motor on it , stock everything as it is I can probably get it up to 32 mph before its a little sketchy, I don't really feel safe without taking the wheels in to have all the spokes tightened and that kinda stuff, the way I run it it does a better job then my friends80cc he got at a garage sale which honestly needed proper assembly to begin with and it would've been better, but the question is should I be worried about anything other than the wheels I probably only need to go between 8-18 mph on the roads but if there's a way to increase efficiency, cooling , I could use some tips or upgrade suggestions for that I've been stopping every 30 minutes for 20-30 minutes because I'm afraid to run it to long , I've had no issues except the hole in the sprocket for mounting was never centered when made which caused me to compensate with spring tensioners, is this time limit fear needless now the engine is run in as long as I attend to the spokes and keep everything else in check I basically use it as an assisted pedal drive, and I'm in Daytona so everything's flat

Great video!

Maybe try a jack shaft kit more torque and higher rpms?

You have a very informative channel. Any thoughts on the seeutech, as far as reliability and maybe the best easiest performance upgrade?

I found the pilot jets. I need to go through all of my parts in order to find them and I will sent you the serial numbers that’s on the Jets for you can find them

Im so sad that we can't legally ride these in the UK, it'd make life so much esier for those of us who cycle (yes ive had an e-bike, im not too big of a fan)

80kmh, thats just mad!!

i soon will be producing a video here on you tube that will rock the gasbike world. YOU READ IT HERE FIRST. no kidding, It was a random choice, chosing this spot, but mark my words. it will add a totally new excitement to this hobby. I have a working prototype and it is like notrhing here on youtube or anywhere else, Sorry L A Hoverbikes for stealing some of your fire. sincerly "ONE MORE FROM THE ROAD"

You want to stuff every chance you get it increases the charge speed and volume think of it like putting a larger turbo or supercharger on a V8

I have a theory that the reed intakes work much like a single or duel plain intake like on a 6 or 8 cylinder auto engine for carbs that are set up for more air/fuel ratio high performance. Also is it possible to set up these 2 strokes with a venting device from the crank case?

Me n my friend are buying motors online Are there any recommendations on a good reliable engine..?. Please, your recommendations would be really appreciated

i know this is an old video but, i looking to get into the hobby myself. will these "upgrades" work on any 80cc kit?

AWESOME INFO 💯

How’s the 50cc doing so far

I almost feel like no idle is ok?

you should try out the kent seachange its like 90 bucks and its a kent bayside mixed with a cranbrook

Thank u

I have a bike with what I thought was 49cc 2-stroke engine on it but after listening to you and your videos and watching you're saying that 20-25 miles an hour is the most get out of one of those well I'm getting almost 50 miles an hour out of mine without all the upgrades like you have on yours I do have a racing carburetor and I do have an exhaust with an expansion chamber but that's it so my question is were they wrong when they sold it to me and telling me it was a 49cc because it goes way faster then 25 miles an hour

Your symptoms say you've got an air leak. Have you performed a leak down test? A simple pressure test to 7 PSI. You should not lose more than one PSI in 10 minutes

I could not find the final port timings and carb video. Could you please tell me which episode they were in? Thanks

Do you know if the Zeda 80 can be converted with a Athena sport cylinder?

Dude. Your my hero. Build me a bike Holy shiiiit!!!!!!!!!. Me n my friend are building bikes. We want good top speed Over 35 But good mid range too.

I like electric, gas, etc. Bikes:)