Motorized Bicycle Exhaust Mods for Better Flow!

In this video I modify the muffler on the motorized bike to make it flow better and still be fairly quiet at the same time. Cutting the pipe does make it flow a little bit better and isn't that much louder, I do not claim to be the first to have done this but I am just doing it to show y'all if you didn't know.
Traxxas Nitro Rustler Muffler add on: • Motorized Bicycle gets...
Motorized Bike Playlist: • 2 Stroke Chinese Bicyc...
Thanks for watching!

[@IngenTechNational]

A video on the off-road lawnmower modifications will be the next video or so!

[@jarule275]

Bro... For the air filter get a plastic scouring pad used for doing dishes and tie wrap it on the inlet. Works well and you wont get sand in the engine.

[@IngenTechNational]

I am probably going to do that a bit later on.

[@kourtneyltd67dombroski78]

Definitely tell a difference I would leave the cap on seemed to be equal on power and not being to loud

[@IngenTechNational]

Yeah!

[@georgelackey622]

Works even better if you grind off the weld on that outlet pipe and remove it entirely, then widen the hole to about a half inch, It's a bit louder but not insane like no cap at all.

[@IngenTechNational]

Alright!

[@thechannel9637]

👍

[@FromtheFleet]

Can you post a link to the high compression head you used?

[@IngenTechNational]

Sure: www.amazon.com/CDHPOWER-Racing-Polygon-Motorized-Bicycle/dp/B077YBYWJF?tag=namespacebran368-20&keywords=motorized+bike+high+compression+head&sprefix=motorized+bike+high+%2Caps%2C1375

[@user-jy1vj4nl7b]

I just did a video of Monarch Springer front end you need to check out. Get the word out brother from another mother...

[@IngenTechNational]

Yes sir!

[@dogsandwich77]

A two stroke needs an expansion chamber to make any sort of low end power. That tube is just a spark arrestor, that can restrict it somewhat. But that bottom cap is what makes that basically the expansion chamber/silencer. Bigger the chamber, more top end. The ONLY engines that need any kind of back pressure in the exhaust is a two stoke. That scavenging effect is how the exhaust gets out of the cylinder since there no real "valves." Also why that exhaust pipe is a handy place for nitro trucks to get fuel pressure from, cause essentially those are 2 stroke diesels. Any changes to the exhaust, you should probably tweek the carb to match. Do a spark chop and see what color it gets. Not saying anything you did here was stupid or nothing, you can change 2 stroke exhaust infinitely to suit where you yourself want the power band at. How big is that engine btw? Like a 49cc?

[@IngenTechNational]

It is a 66cc, and yeah I understand what you are saying about the expansion chamber but as I said in the video I need it kind of quiet lol. I am ordering a High Performance CDI, Jets, and new plugs so get it to run a bit better! The spark looked a bit week so after 3 years of abuse I think it is time to upgrade lmao!

[@dogsandwich77]

@@IngenTechNational 66cc? That's badass! I got a scooter with a 35cc two stroke, like a Go-Ped, just not a Go-Ped. Blade-Z by Moby, IIRC. It's ancient, but still rips with nothing more done to it than a better air filter, a different exhaust, and some fine tuning. Same with my 250R 3 wheeler. Basically stock besides an FMF pipe and silencer, and a re-jetting, night and day difference between now vs. stock. Took me a long time to understand the difference between "running rich" and "too oil" in the fuel. Too much oil = less gas = running lean. Gas helps cool the head, so it will actually run hotter with more oil. The air/fuel ratio is way more important than the gas/oil ratio. If the plug comes out looking black, check the carb tuning. A lot of those little carbs have seemingly hidden adjustment screws that sometimes require special, tiny, weird ass shaped tools to adjust. Idk why I'm blabbing on about this shit when no one asked lol

[@IngenTechNational]

@@dogsandwich77 Nah man you're. I used to run freaken 16:1 in this bike but now run 40:1. I got some jets so in a future video I will make a video on tuning it the best I can!

[@greggriffith4209]

@IngenTechNational it don't gotta be loud to be fast

[@infohere1000]

what is exact website link you got your head form

[@IngenTechNational]

I just typed it in on ebay and picked out the one I liked.

[@domjoey7514]

Hello again so on my mower the front is lowered but the steering is extremely stiff and the steering gear keeps slipping also because it is to much what should I do? Have a recommendations?

[@IngenTechNational]

Could be tire rods binding up since the geometry has changed and the gear might need to be pushed over to the drive gear a bit more. I know it is hard to read and explain in the comments but if I was there I could tell ya lol!

[@domjoey7514]

I understand what you mean because when I pull the wheel back it is a little better in steering

[@IngenTechNational]

@@domjoey7514 Oh ok!

[@domjoey7514]

@@IngenTechNational well thank you again

[@geic0]

Hey man idk if you still ride go karts or not but what’s the fastest you’ve ever gone on your go kart with a 212 predator engine

[@IngenTechNational]

My brother did 79 with the racing go-kart once. I did somewhere in the 60s-70s once on it I think!

[@greggriffith4209]

No wish I had

[@greggriffith4209]

@@IngenTechNational I put my 72 r5 350 moter on my 3 wheeler

[@greggriffith4209]

Don't kill your selfish please

[@IngenTechNational]

@@greggriffith4209Alright!

[@russbeauvoir1049]

How do you get the bike to idle like that

[@IngenTechNational]

Just adjusted the idle screw

[@Buggysbuilds]

yes my fuel absolutely boils after riding. Im here doing wheelies and pulls lol

[@IngenTechNational]

Oh ok! Any ideas to make it not boil? Just curious.

[@breezetixmoto]

@@IngenTechNational You would have to not use a metal intake manifold, or maybe use a longer intake. Other than that, I have no clue. I got a minarelli engine, with a plastic reed, the intake doesn't really transfer heat to the carb.

[@IngenTechNational]

@@breezetixmoto Maybe I could put some spacers in it to make it a bit cooler and longer, i'll see lol.

[@infohere1000]

what? 1:19 - if you dont like what throttle in hot weather?

[@IngenTechNational]

If you like going wide open throttle for long periods of time. This head will dissipate heat very quickly because wide open throttle is a lot of heat and so your motor wont over heat.

[@infohere1000]

so i have a 500 mt bike i have constant hills that vary every few blocks and live near DT of a big city so i cant get going fast nor maintain for even 4 blocks without having to stop , so what should i get for that type of riding @@IngenTechNational

[@infohere1000]

you should get a decibal meter ap on your phone and do a real test

[@IngenTechNational]

I haven't yet but I try to do one in the future. It doesn't really sound that much louder tho.

[@infohere1000]

phone mics blow out audio close to loud noises, to do a test that is recorded acurately you would need to stand at no closer than 8 ft away then also try 16 ft away@@IngenTechNational

[@IngenTechNational]

Alright.

[@infohere1000]

your too quiet you need to double your volume

[@michaeldahler]

Turn up ur volume

[@greggriffith4209]

There's no such thing as 4 stroking . It's running rich 4 has 4 strokes 2 strokes have 2 strokes

[@IngenTechNational]

The term 4 stroking in a 2 stroke engine is that when a 2 stroke runs rich it misfires on every other stroke causing it to actually fire every 4 strokes instead of 2 even though it is a 2 stroke engine, bit like a hit & miss engine.

[@breezetixmoto]

Clearly you've never owned 2 strokes.

[@breezetixmoto]

@@IngenTechNational Not you. The commenter

[@IngenTechNational]

@@breezetixmoto Ohhh ok, my bad man.

[@greggriffith4209]

@breezetixmoto let's see my h2 ran like a bat out of he'll ever heard or road ,76 rd 400 ran well ,rd 350 ran on one wheel most of the time husky cr 400 was a power house ever owned any one of those?

[@fletcherjacobs3688]

Your bike is running too rich

[@IngenTechNational]

Maybe a tiny bit, it seems to be running good now tho.