10 FREE WAYS to MORE POWER in a TWO STROKE Engine! DIRTBIKE/SCOOTER/MOPED | 2 STROKE TUNING 

utoobuser206 Yeah, very informative.

+farinrscollective Thanks!

Yeah when i see 10:01 minute video i don't even watch it cuz i know that there will be nothing that i'm looking for.

Welcome to scandinavia. No stupid "Hello how its going" stuff, we like to do things (and speak less), not vice versa.

@@betav47 GREAT! So now i need to move there to get a girlfriend! Sounds awesome! Less chat more action! Thanks for the heads up

.....so there wasn't any ring damage from the overheating? I think a sthil would have gotten ring damage .

I once got my 125 2 stroke racing bike so hot that it started dieseling. I pulled the spark plug boot off and it kept running. It turns out I ran it with no coolant for about 20 minutes... fail

if youre just after power for short periods of time thats how to do it

+Kosmoto Thanks! Do it!

Its could be a stupid question... my english is maybe not so good. But...that ring you put on the cilinder, where's that for?

@@marcello033 to raise the cylinder in order to get much more aggressive port timing. Measure first and decide if there is enough to gain. I go up to 170/122/155 degrees port timing for cylinders with piston controlled inlets. This is fine for 50-70ccm

+P33TMusic Thanks! Great tip!

+FORCED-INDUCTN Thanks, I will!

You're better off getting 70cc sport kit and a new carb for your yamaha dt because if you tune the stock engine alot the power will be at really high rpm and its not that nice to ride on the street the 70cc sport cylinders have way more low end and high end power than a 50cc cylinder

AM6 motors was 2 stroke last time i checked ;) Do what he said in this video. But make sure to thorouhly research every single aspect of it through other means before you do anything. You do not want to explode your engine. If you want the quick and easy way to gain some exstra hp out of it and have some cash to spend, look fore a 70cc big bore kit and a new crankshaft. But the cheep and easy way he mentioned in this video, get a new main jet in the carb. Changing the stock air filter for a high flow/power filter propably wouldnt hurt eighter. And again, follow the tils in this video, just make sure to research it alot first and read as much as possible about how a 2 stroke work. Good luck to you my friend 👉

@@laurisorvari4981 thats boring you whant it to rev high that will be much more fun and nobody whants a 4 stroke power curve on a 2 stroke

@@laurisorvari4981 in some places people are stuck with 50cc bikes until they're older :)

80cc pink top cilinder with a doppler crank and a 19mm ali carb

I was told by an old school two stroke tuner that he done similar in the piston, cramming cork inside it above the wrist pin, do you think this is likely to do a similar job or worth trying?

most modern moped cranks in the aftermarket/tuning segment do have either aluminium ore plastic filling to not lose crank volyme.

Yes!

Thanks man!

+utoobuser206 Thanks!

+2stroketurbo Sure, send me a mail on 2strokestuffing@gmail.com You know I used to own a Wartburg 353, really miss it. Need to get another one and tune it!

Time to start messing with gearing?

Port timing and a proper exhaust can make or break a 2 stroke. And since you probably can't or won't want to mess with port timing, experiment with different exhaust setups. Problem with 2 strokes is you can tune them to operate best in certain rpm bands, but all other areas will suffer for it. That's the nature of the beast.

when are you finna start tuning am6 and Derbi motors. i bet youre going to be the best if you pur your mind to it!

Drill a hole in the stinger, weld a nut in line with the hole and screw the bolt in to tighten it up. Us a jam nut as well

+Humanoid Thanks!

+Dave Spooney Thanks! Cheers to nerding out!

+Motozing Thanks!

+AuMechanic Good info!

I would say, tune it with a pressuregauge. 0.3bar is quite good pressure in the belly.

+Patrick Wetterskog That's good advice!

If you are prepared to weld a pressure tap in it that's a good method to use. Just watch the CC temp whichever way you do it.

I sanded my head unroll I had 135psi compression and it ran too hot. I backed it down to 110psi and it ran much better than the stock 100psi I had on a new scooter. There was still .07 mm left in the squish band. I used lead solder to get my squish measurment.

Thanks!

any time bro.... i do pocket bikes for my vids ...would love to see how fast you could make one go

+kostask18 All stuff that can help, I tried to pick a few that weren't that common.

Sounds like an excellent mod list.

+GOONCITY I'll put it on the list!

derk nobit put the old sprocket on it and see if you have got more power. You should do things one at a time to find out what works and what doesn’t

RideSouthWest ya should have but didn't.

derk nobit yeah haha I’ve done the same many times. Just things you pick up when tuning engines and stuff

but it gonna reduce the torque

Small CC bikes keep the cost down. Everything is relatively cheaper than mx bikes and the same principals apply. Theoretically all mods would apply to larger CC bikes.

"as short as you can" is very dumb. If you take too much you will lower the speed of the transfer ports as some pressure will go back out the carb

@@KalLanPIDT only doubled the hp on a kt100

Great name :D

65cc did not exist, but did you get any power on it?

yes for sure that modification is usual here but is wrong, you get torque for riding with two but loose all higher rpm, and all these videos are about high rpm power original piston is 38mm and up to 39mm is 50cc (if we want to be in 50cc class)

forgecro pretty sure exhaust flow is what matters.. If you can go just as fast at 10k why bother going to 12

+Galih Putra GPS Racing Thank you!

a smaller exhaust will not make more power, but i you decrease the size of the stinger (the pipe after the expasionchamber) you will have more backpressure but you engine will overheat more quickly, as far as i know

No need to sand it. The head of IAME 60 cc engines have a copper gasket in it. Removing the gasket will increase power.

@@davidgutierrez3312 Huh, okay. But won't that likely kill reliability as well?

@@LukeAsOneRogue More heat and more revs.. so you'll have to do maintenance sooner. Instead of changing the piston after 100 hours you'll change it after 80 hours. Even better: changing the exhaust restrictor for one with larger diameter will improve performance too. Those two modifications wouldn't ruin the engine and make it perform like a water cooled X30 Mini. Those engines are made for young kids (5-7) competing in karting in Europe and come with those restrictions to limit power, but can safely be removed.

@@davidgutierrez3312 Okay then. Thanks for the tips.

I've used it in my sihl weedeaters and chainsaw and haven't gotten any noticable power gains.

AZ0960440 two stroke performance tuning by Haynes

Im running a 9.9 Johnson from 1977 and its a beast. I run it on 20% rc fuel and make sure you got a good propeller. Also upjet it. Usually thats enough to smoke most people.

Or advance the timing

you mean moving the sensor? i don't want to fuck up the timing on the other rpms, it's an enduro bike i need some power on low and mid rpms

jnuxca you should just get v force or boysen reeds. Depending on witch one gives the most performance increase. Also go with a fly wheel weight. Right now i have a 07 yz250 with a 265 kit. I have a port and polish job for mid to top end power. After that i threw on boysen reeds and removed the stock spacer. Got some head work done. Bike rips...currently needs a right side oil seal 😪 but if you got the money go with porting as a first step. You can get bottom to mid port jobs and mid to top. Eric gorr does a great job and hes not the most expensive.

ktm comes stock with v force reeds, also i mine is an exc (not the sx model) so planty of flywheel weight trust me, it gets boring waiting for the engine to gain rpms ahahah, your bike sounds like a a good project, i would only miss the hydraulic clutch

jnuxca hm interesting. Never knew that. I have always been interested in a buying a ktm i just never found a nice one thats isnt a arm and a leg for price lol.

+Andy Reid Good tips!

it is hard to do so if you have piston with L-ring!

@@jozseffarkas1767 take a die grinder using a blunt foot ball shaped carbide but and remove all the imperfections inside the ports left from factory casting until you have resurfaced every square centimeter of all the ports without cutting clear into the cylinder bore ..but match up the exhaust port as big as necessary to the pipe adapter and the polish it to a mirror finish ..and nothing else ..you with feel a bike length jump ahead of a stock bike of the same after a jet size bigger for the carb and a higher flow air filter like a "twin air" brand foam filter and perhaps a FMF fatty tuned expansion chamber or a Yoshimura tuned pipe if you got the bucks ..cause no body ever out tuned "pop" Yoshimura who I spent a week with in a two stroke tuning school on the Honda Elsinore as it was "pop" Yoshimura who designed developed Honda's very first two stroke engines ever made ..that was the game changed from that moment on ..as "pop" taught me everything there ever was or ever will be about tuning port induction two stroke engines as to how they make boost , horsepower , power bands and the essential of a tune expansion chamber ..as so far none of you in these comments have not a clue ..including the video ..

i had Aspen R (race aspen fuel) in a chainsaw, without any tuning or changing the setup the chainsaw ran 2000rpm more, so yes it will work but be careful with overheating

+Andrew Byrne It depends on how well the cone pipe is welded, and how "sharp" the stamped pipe is. Sharp, clear transitions between the different pipe sections = sharp pulses. This is the downside to hydroformed pipes - the transitions are kinda smeared and this smears out the pulses too.

2STROKE STUFFING So it’s actually better to have distinct transitions, not a smoother “flow”? Not doubting you, just trying to learn a bit on expansion chamber selection.

yep

Bigger squish band clearance means they don't have to be as precise when machining the cylinder, head, piston and rod. Precision is expensive.

😂

+Sketch1994 Good advice! Om many pipes both the header and belly is too long out of the box.

Could be why the FMF fatty come stock on KTM. They are blossomed out big right at the exhaust port and then open up to a larger diameter as soon as the pipe has enough clearance to wrap around the frame and then it gets huge like a balloon right where you see the biggest dents in them ..but well worth the risk as they have a long taper down on to the stinger that sounds like a higher pitch 250cc even on the open class 380cc and bigger ktm's ...my state in the USA will allow you the use of a moped if you lose your license over a DUI ..on a quick choice I bought a majestic brand moped from India one day ..without even test riding it ..my dad picked it up for me in his pickup and brought it home ..fired it up in the back yard of over grown lawn grass about six inches high and it went from ho hummm to HUMMMM and didn't even budge .and I had to be at work the next day at six in the morning ....so I cut the end off the air box ..drove a steel spike through all the baffles in the muffler and took a torch tip cleaner and ran through the main jet in the carb.. And it pulled me down the road a an about.23mph f you are riding one with a DUI 25 mph is your speed limit ...but we are bikers right ? More is more better and faster is faster fun ..so I payed my local KTM shop a visit and order an FMF fatty for a KTM Jr 50 moto cross mini biike h a slight tweek of the exhaust port flange it bolted on to the majestic Hindi hot rod step through with peddles and a coaster brake. Took a die grinder to the exhaust port and hogged it out to match the fatty t t pulled the rough cast piece if shit Mikuni carburetor licened carb. pulled out all the brass and ran a 1/2" drill bit right through the carb bt1/8 " bigger diame. Went two jet sizes bigger .removed the head and base gasket used Yamaha bond#4 in place of gaskets ..fired it up sounding like a CR60R Honda Elsinore,braaapa braap ..speedo stopped at 45 mph and it pegged it very quickly ..then after about 20 minutes locked up with a melted piston ..tried a bigger jet with no luck too rich ..now what ? Im in panic ..then it hit me ..what was that number on the plug ..its a NGK B5ES.so Honda shop and get a NGK B10.5 VES much colder heat range ..pined the throttle all day at 53 mph next to my buddy's 650 cc 1973 triumph tiger ..so what did we learn ? You can double the rpm to double the HP to double the top end and double the amount of heat giving off that melts two Pistons.doubling the power does not ygrow the cooling fins on the jug and head twice as long to cool down twice as much more heat giving off ..but apparently you can cheat with aspark plug twice as cold unfortunately you double the embalance of the rotating mass ..as bits and pieces start cracking and falling off .like the rear fender stamped body fell off followed by the chain guard primary cover mirrors luggage rake front fender and turned its self into a much lighte weighr rmoto GP scrambler cafe motoped that became popular from its menising braap sound and sold it for $450 bucks totally trashed out ..and then bought a Tomos

+ludditeneaderthal yes it does but some synthetics and ester based works. You need to "purge" the system after use just like with alky drag cars, methanol is corrosive and hydroscopic.

+Tuan Rizkhan I'm hoping the Spx will turn into something like tgat eventually!

hey i own a Yamaha tzr125rr can you give me some tips to do racing it.

+Gary Ferguson Jr Haha, thanks!