Will reed valves, a windowed piston, and a bigger carb give your motorized bike more power? #4
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- Опубліковано 5 лип 2022
- I will be trying a $40 reed valve kit, a $40 mikuni carburetor and a $30 windowed piston all from Amazon to see if I will get more power out of my motorized bike
With just port work (simple port work) you will get best bang for your buck. Even with the reed valve you can change the port durations a bit and get way more outta it.
Yes it’s running too rich not enough air might make a bigger air filter
Great job this is how you learn to mod stuff!
Thanks
Great video! You might want to read about porting the exhaust port, since you have increase the intake volume and cylinder volume at the same stroke, the exhaust gasses must escape quickly. În other words increasing the cylinder bore will increase the pressure în the crankcase chamber wich will afect the transfer. Bigger îs not allways better. Bigger bore you have to raise the exhaust port a bit for smoother transfer and higher rpm. Read about it we all began like this. Cheers!
You might find you'll get better performance with a smaller mm carburetor. And if you spent 30bucks for a mikuni carb its definitely a clone loved the video man I'm subscribed keep doing what your doing and hope to see your channel grow. Love peace and axel grease from peacedale rhode island. From those few throttle blurbs at the end of the video it sounds like its rich I'd down jet a few steps and also check and see if the reed valve is opening properly
I think the carb is fine, I think you just need to tune it in right
Yes
I think if you actually read, Maikuni isn't the same as Mikuni
Way too much carb...30 mm?
I think my IT-175 had a 28 mm...
One is an A piston... One is a B piston.... One is for the 38MM stroke... One is for the 40MM stroke
Yes I figured that out in the video, where I bought it from didn’t specify that
Yes
Nice job
Did you ever get it tuned properly? What size carb is that?
I've been thinking about doing this to my yd100 and I wouldn't of went any bigger than a 24mm carb on a 66cc
I have a bbr angle fire engine kit on my Schwinn bike and it is awesome I have videos in my channel is here
Hey brother nice bike.... you need to lean it out quite a bit... it's 4stroking when you rev it up and it should rev really clean and smooth
I agree
Yeah I think the carb is too big
@@sliprope6674 I have the same intake and reed set up and I use a OKO or PK 21MM Carb. It will fit your rubber boot that you have no problem! depending on your elevation they only have Idle jets as small as .30 and up so if you are over 4500ft in elevation that will not work. This and a little Porting and You will be doing 45+mph.As long as you are not over 150 pounds that is. lol I enjoyed watching You work and learn all at the same time my friend. I have been building these motors for over 49 years and I am still learning from Kids building there first one! Stay safe out there!🙏🏻👍🤣
With the CDI you have in the box I’m pretty sure you have to remove the top metal piece with pliers in order for it to fit in the CDI. It unscrews
Yeah I realized that but the spark plug that comes with the kit is so small the cap doesn’t unscrew, it’s a part of the plug. I ended up using a name brand NGK plug and took the cap off so I could use the aftermarket cdi
@@sliprope6674 champion plugs have always been my go to, these motors love em
it is my experience that kind of air filter really choke a tuned 2 stroke 50 or 70 cc, jetted with i big foam filter gives 3 times the power
Yea air flow is a big problem
Looks like the wrist pins holes are different one looks like a high hole and the other is a low hole
Yes
You can try to adjust carb fuel mixture and if that dossen't worck try working on the jets.
Usualy bigger carb îs not allways better
lol ok i jumped yhe gun .yell yes bro plug it.. u did good kid only thing we can do is practice to make it perfect buddy
You should always stuff a rag around the crankshaft so you don't drop anything inside the motor like those clip pins in the piston.😮😮😮
Yep always
It’s almost like I put a rag in it…
What the top speed?
You didn't buy a Mikuni carb. You bought a Maikuni carb. Anytime you add a different carb you need to rejet it. I think your carb might be too big for your engine. Anyway good luck and hope you get it running good.
Yeah the carb is definitely too big and we realized it’s a mikuni carb
Not sure about the fake Mikunis, but the fake Dellorto I bought came with a #135 main jet! And it was intended for a 50cc engine! (KTM50). Had to drop down to an #85.
Where did u get that silencer that fit over ur exhaust? Looks like it came together? Or did u build it?
No I bought it separately on Amazon, works and fits great, just look up pit bike muffler on Amazon and you’ll find it
Mph?
If you would have put the original head back on the bike in the original head gasket you probably would have got more compression and definitely would have got more power with that window piston that came with the Reed kit the original head and head gasket probably would have given you the clearance needed to use the new piston
Nice video! Could you give me a list of links from the website that you bought from?
Everything is off Amazon do you want the specific links?
@@sliprope6674 Yes please
Does the Reed valves and window piston actually work I seen a dyno test here on UA-cam and the guy was losing horsepower and torque not sure why .... I have a casted jug Head combo I can't remove the head it's all one piece but I put the Reed valve kit and windowed piston double slotted window piston if this reduces horsepower I'll just put it back to stock before I mount on a bike and find out it sucks
It’s not worth it don’t waste your money. My bike has the stock carb and a 36t sprocket and slip has the big carb and reed valves and a 32t Tooth sprocket. Mine goes 38 mph his goes 40 mph. When he added the reed valves and carb he went from 37mph to 40 mph. Not a big difference for $100
Your carbs miles away try close as you can for max power good work
What was the effect of changing your stock exhaust to the expansion chamber muffler and silencer? Did you notice anything for torque and speed? How was the sound different?
It is much louder and more powerful
@@sliprope6674 is the extra power worth putting up with the noise ?
@@Heyemeyohsts yes
I would have never thought to use a flat head instead of the Allen keys I could have saved so much money 🤦🏽
Allen keys are cheap like $10 a set 💀
Your moter has a low wrist pin.the one u bought is a high hole wristpin.wrong piston dude.
Yeah... I figured that out didn’t I?
Yes
Did they provide better performance for your motor
Look at David stout’s comment I responded to that one
A boost bottle would have made a difference. And more money in your pocket
What is that muffler called
FVRITO performance expansion chamber on Amazon
It doesn't say mikuni
Yes way to rich . Till you leaner out some you can,t tell.
bro plug ur bottom so nothing goes in it
The window piston is high hole and you piston in the bike is low hole
You might be able to just shorten the piston skirt and make your windowed-piston work, it's probably just a factory defect that they expect you to fix, I'm about 90% sure that's the right piston, a piece of sandpaper on the floor would do that job,👍, awesome video, thanks for sharing.
That would work too
Them new blocks suck that put it on the jug don't get them
30 bucks? Mikuni? Sus.
🤣🤣🤣
Yeah we figured out it’s a knock off brand
That looks like a 28mm carb which is way too big, go with a 21mm
28mm is to big
You should have got a nibbi racing carb pe28 best quality not spray painted crap mialcunei
30mm is too big for this engine, a 21mm is perfect
Mikuni not maikuni
Yes
That carb is to big for you motor is better 21mm carb and see you buy 28mmcarb
The new thing sucks will not seal right don't buy