Big Bore Kit And JRL Carb Update
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- Опубліковано 23 сер 2024
- Taking a look at how well the 49mm Iron sleeve kit and JRL carburetor have been holding up. One I recommend, the other I do not.
Big Bore first impression:
• Fixing and Upgrading S...
Carb to intake O-rings that work: 15mmx19mmx2mm
www.amazon.com...
JRL Carb:
www.amazon.com...
Big Bore Kit:
www.amazon.com...
We upload motorized bike videos every week (sometimes more)!
FAQs:
Oil: 32:1, semi synthetic, random brands.
Gas: 87oct
Spark Plug: NGK B8HS (yd-100), NGK B6HS (pk80)
Parts: I buy mostly from Amazon.
Favorite Motor: Zeda (Firestorm) Triple 40
Favorite Carburetor: NT Speed
Favorite Bike For A Motor: I don't have one yet.
To contact me directly find me on Discord "LA Hover#1036"
For motorized bike help, join the server / discord
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Typo on the 49mm kit... It's 75.4cc Thanks Justin Whitacre
Displacement Calculator spicerparts.com/calculators/engine-displacement-calculator
if yheres anyway i can send u my motor to diagnose it idk it has compression turns over just keeps locking up on the small bevel gear i took apart everything cant figure it out ???
Yea I hear u on the pipe pricing .if they drop the price they would sell more and really 40 mph out of the box with just one home free mod is plenty enough speed for me and if I wanted more speed I would just drop to a 32 from the 44
I whole-heartedly agree with the, "50mph on a bike" comment, I haven't even tested my bike to absolute max speed just because one, I don't wanna die and two, I just don't need that much speed from my bike. To get a nice cruising speed of 30-35 without over-taxing the engine and have that be consistent and dependable, well shoot that's absolutely great for me!
Anything over 40mph is pretty terrifying without a full suspension. I don't think I'd go much faster than that unless it was just a short stretch.
Congrats on 10k!!!
sweet we’ve all been waiting on this
Is the a greenapple Hyde I see in the back I thought you where trying to quit lol 😆 thanks for another great video brother
Made it 5 days :( will try again when this one dies... I hate these thing
4:00 pure bliss
I bought both of these parts and I love them. The cilender was crazy bad but has no scratches in the bore. The carb was very responsive, I need to tune it tho because my bike that it was on had a ported cilender and intake so it was breathing good. Put a new one on with no porting and it runs good but it’s very boggy. Must be to rich. I will just adjust the needle one notch.
Regular NT carburetor, modified needle , jet, ported & matched with a golf ball dimpled intake With a velocity stack & slightly smashed green foam filter...
glued the cap & manifold with orange Rtv.
U can’t even see the throttle cable
By the carburetor because it’s plumbed through the top tube. Removed choke & to prime the bike I hold down the float button a couple of seconds than give a couple of pumps to make fuel spill into the intake.
I have a boost bottle but I’m trying to figure a way to make a large diameter hose & bigger
Inside diameter fittings because the way it came with tiny holes wouldn’t affect performance. One hose going to the top bend in the manifold
& the other aiming down the port at the piston.
Drilling carb jets is not ideal. Without proper chamfering the fuel is intruded to a lot of turbulence. I would just buy the jets
Great video bro good information on the bikes
Great info man thanks
I do wish we could see how fast you are going. Love vd sir.
When I get above 50 on a bicycle I start thinking about the helmet I'm not wearing
Exactly 💯 🤣
mabey i should just try the yd100 but u still have to do port work wwhy cant they just put out a motor thats PLug n Play
Because Chinese manufacturing sucks
Information packed.
Love it
Hey man, i just gt two 50cc engine kist and they came with those same carbs. I only used one kit and using one of the carbs. It seems okay thus far, but i am in the break in period, so havent tried to open it up really. Thanks for the vid and ride safe. I plan on a few km run in a day or two. My carb worked like crap, til i placed the clip to the second from the top slot, to lean it out. Hope it isnt too lean, but the next slot down it four strokes bad.
I think you made the right call on the needle. Smaller motor will use less fuel... I'm going to be testing one of those little 50cc kit soon too :) I bet after break-in and tuning it will do 50-60 miles on a stock tank.
@@LAHover Well man, i cant wait til you do your vid, i learn from you. So your vids do help folks, and as a youtuber, i know it means alot to know your helping folks. I did drill 2 -1/4inch holes in the bottom of the stock pipe and two in the ineer tube of the stick pipe. I just hope its not too lean but shouldnt be
i guess no tire shine for that bike lol
Hey LA, for what ever reason my JLR BoFeng carberater will not hold onto the engine? I slid the carb on and tightened down the clamp bolt but it’s as if the port is two big and the metal is too thick that no matter how tight I get the clamp it will not grip onto the intake good enough to hold on, it’s crazy I have no idea why mine is like this, I haven't heard of anyone else having this issue. This was the carb that came with my Zeda 80 Firestorm kit.
Yep
You should try a puch bing carburettor 17.5mm or 19mm fits right on to intake has a clamp a lot like the JLR carb I’ve only just bought it and fitted it so will see if there is a performance gain and how reliable it is although I couldn’t fit an air filter to it so I just have a mesh screen for now
6:55 You stole my O-ring in the carburetor idea...lol.... I noticed on the inside stock NT carb it has a groove where an O-ring fits perfectly to prevent air intake leaks,when using a stock manifold & stock NT carb.
If it was you who recommend it to me I thank you! Wonderfully idea. Can be tricky find rings that don't turn into mush... I got lucky with these.
@@LAHover I bought a metric set of HF Nitirle O-rings I'm not sure if Nitrile or Viton would be better suited. I just started reading about the 6 different types of )-rings lol
they a new smart carb 2 on youtube looks good two thumb up
After watching this video I went on ebay to buy this carb (JRL). I paid $10.00 on ebay but found it about $1 cheaper on Amazon. DUH!!! I shoulda read the decsciption! I coulda saved a dollar! Oh well! Live and learn I guess!
Have been watching you videos for over a year and I most admit I like which story’s you tell about these bike . Have build about 3 of this kit first one was great few other problems along the way .roke mistakes using wrong oil even when it label it for two stroke.. now I use a good oil that I know is meant for the bike .my real problem is losing power after a month or two along the line finding out I had a big score in my chamber ..with my research I find out i either don’t warm it up enough or which I think sounds about right .since I stop and start it most times due taking trains along my journey.can you tell me how you Maintain yours .I have a score along the intake and along the side as well.
Looks like mr. Piston had a close eye on you.👀
I can't quite understand why people think the jrl carb is better than a speed. The bore of the jrl in slightly smaller than a speed carb.
Do u have video of just jrl carb? Does it seem like increase the speed just interesting
No dedicated video. No noticeable increase in speed, but both motors I used it on started easier, idled better, had better throttle response, and all around ran smoother.
Not that you can't get that with an NT carb. I just think these have a better stock tune and fewer air leaks.
@@LAHover good to know I got one of those carbs with throttle choke it did same smother a lot smother and got up to top speed a lot faster but only 1mph faster than stock .stock gets allday ride to see how fast was just 33.-32 and but with thumb choke carb got off bike berry was like 33.-34
U do good videos man good for you seem dedicated like if I had a computer to do editing and a couple of tripods I would like to do videos like that as well I just recently picked up a GoPro before I was just using my phone a old GoPro but like new works great gopro3+ I know it's probably not the best or people may say it's outdated but it going to work for me , because I could just remove micro SD card and put on my phone to upload don't have editing system or computer
I have a wildcat pk80 otw gonna give that a try...time to retire the old gt5...again...
1:15 you left bottom part like that ? I cleaned it all, I think it will give you bit more power completely unrestricted. So far got like 300km on him , I like this kit because it can pull steeper hills than 69cc:D Crazy how much differece 6cc makes :)
Blow down timing! You shouldn't just max port out everything without knowing what it will do to performance.
@@SamZStuff i just cleaned the sleeve.. at 1:15 you can see port is restricted by iron sleeve...
@@camo7452 yeah I have the same lip on my iron sleeve cylinder. I also didn't cut the bottom lip off for more power.👍
2:57 zeda secret weapon going 50mph :v
lol yup, Just that once... I'm in no hurry to try it again.
Where can I get that digital RMP dealy and how does it work?
Works great :) It only updated about 2 time each second, but it's fine for setting idle, tuning, finding your rpm limit, and your cruising RPMs www.amazon.com/dp/B07K7LP3PT?psc=1&ref=ppx_yo2_dt_b_product_details
@@LAHover Thanks!
I am recording ever thing I'm pulling apart and definitely taking this to the fullest.tjese phantom engine are death traps
Not sure u like but try the minarelli top end conversion it a different motor think it be good video and u might get scared of ur bike lol u get 50mph no problem . But u don't have to go that fast u can also cruise it I can help u out send u link to help u get stuff and u can think about it if u want to go thru it I say it's worth it if u go cheap with fake vm20 carb u save a lot and yeah u can probably do it all around 350ish plus ur motor if u got part motor u in luck can use that but yeah I'm sure u enjoy it
Hello Señor LA Hover & Greetings from the Taco City: San Antonio, TX. I want to buy a JRL Carb like the one you’re using in this video. I too have a yd100 and would like to know where I can get one. I searched on Amazon for one but I’m not sure if I’m finding the right one because from what I see, there’s only a carb for 49/60/80cc. This may a stupid question but sometimes I need to be reminded how dumb I am. Haha. Please help with info whenever you get a chance. Thx again.
What’s the best carburetor for a 49cc four stroke motor ? Performance wise ?
Did you ever figure out what jets the bowfeng/jrl carbs take
So just stick to the YD 100 and is there any real difference between the BT 100 something I been wondering about going to do my first build in a decade
My old bike ran beautifully with a stock NT carburetor but I wanted to upgrade to the bofang I got the bofang and it runs good it just four strokes a lot in the high end. I run 32:1 and I was thinking it had something to do with the jetting considering the stock jetting for the bofang is .70 and for the NT is .65 should I re jet the bofang?
wondering use big bore kit with reed and window piston and metal stack piece for the stock carb
6,500 rpm is pretty high up there, I try to keep mine around 6,000 rpm.
Is there a bore kit for a 82' 110ct?
Hello, I just put one of those carbs on my bike. I like the carb but if I go over 3/4 throttle it bogs out do you know what size jet comes with it, and what size jet did you ultimately use? Thanks☺️
I found the stock jet to be perfect for my stock 66/80cc motors. I had to drill out the jet to 76 for my big more kit. Make sure you don't have any air leaks, and clean out the jet.
If she still bogs try a 76. Stock is probably a 70-72.
@@LAHover I thought I might need a bigger jet, so the say it's a size 70 stock, but I also read that if you can put a little choke on and it runs better, then you need to upjet, and if you take off the air cleaner then you need to down jet 🤔 I took off the air cleaner and I was able to go faster. I have my needle on the very top position and it seems like I get a slight bog every now and then, but I've never been as fast as I have on this bike and motor as of yet, ☺️ I used to be an avid Dellorto guy, but I had a bad experience with a seller and they won't make it right. Anyways I've found they have serious air leak problems, so I'm done. I'm really digging the bofang I just need to tinker a little more and I should be happy. Oh btw I have a CDH bottom end, a 49mm iron sleeve big bore, and a casting head. I'd say I need a 68 jet if they come stick with a 70. A 68 is also what my bike liked with the Dellorto, lol. Too bad I can't swap jets, as I have 2 68's 🤷
Has anyone found replacement jets for this carb? I’ve been looking all over and can’t find any. The 5mm jets do not fit as stated in the video
I believe they are the same as the “Predator 212” jets. Maybe a 8mm x 9mm.. not many options for these jets 😬
@@paulyswift7609 yep i looked all over and even went to every auto parts store in my area and couldn't find any. ended up switching carbs to one that actually used 5mm jets and it worked fine. just a headache
@@Hockeymike16 You can try to change the jet pilot off the NT carb. and put it on the Bofeng carb...boom! 5mm NT main jets. I'm tinkering with it now bc...I REALLY want this velocity stack to work
"GET BACK TO WORK" haha..😄
Nice my top speed is 58km.h in 100% chinese not 80cc 47/40 in 3.5 liter benzin in 100 km.
Kinda off subject but....Who prefers kill switch VS no kill switch (pro & cons) and thumb throttle VS twist grip...Many say the kill switch fries your ignition system faster....
I also see these cheap under $20 pit bike CDI ignition systems on Ebay & Amazon that look much better than the stock CDI .I'm wondering if they can be wired up & would work better-longer life/stronger spark... I dunno if the 2 stroke kits use an AC or DC voltage CDI coil ....Anyways here's a link if it ti'll post- www.ebay.com/itm/184630278047 there are a few different types for cheap.
And we have some people calling me a snowflake but hey when u spend 300 on a engine if you can afford it u would think it would be fine now mind u I have 1000 cc street bikes and so on so yea it's nothing to do with snowflakes if ur the one who can afford to pay for what u want u should get what u pay for now I ain't the one to knock anyone but if u can't afford to take care of ur self or do drugs or whatever ur case my be dnt knock someone who has the money to pay for what they want ..hey
2:57 BUT THE INTERNET TROLLS WANT IT!