the intake track and the exhaust are your limits. aka carb intake port valve to the exhaust valve and out your exhaust pipe. it only flows so much. by adding capacity to the cylinder it only moves that power to a lower rpm because the larger bore draws in more air. you will lower your upper rpm as well . adding more available air to the intake and exhaust side will in turn allow the engine to produce more power the higher the rpm goes. i suggest porting the head and adding bigger valves. adding more duration to the cam can help as well because it allows the valves to stay open longer which allows more air to be drawn into the cylinder. you guys are on the right track. i cant wait for the next video!
I like this bike because it's simple, very low on maintenance, can take a beating, is easy and fun to ride, and BECAUSE it's slow. It gets me to the trails 30 miles away at 50-55mph no problem, and gets me around with ease and comfort once I'm there. However I do think it's cool to see all these mods people are doing to tweak it to their liking and just show what's possible.
Thanks for your efforts and testing much appreciated. All is looking good to squeeze more out of this value based bike . Making it best bang for the money . With a cam and pipe and possible head work , these upgrades will be no doubt best improved bike this year . Love you guy's videos .
Awesome! Been looking to get some more ponies out of my 150l without having to sell. Are there any downsides to doing the conversion? Not worried about warranty but more longevity
@@Scooterswapshop Almost ... but making more power takes more fuel. And that will reduce the range. A big deal on a touring bike, but I don't think anyone will care on these. I'm finalizing finances on my 2024 at the dealer tomorrow. Going from a vStrom 1000 to a vStrom 650 was an easy change. From the vStrom to the XR150 will be HUGE, so its going to get some mods. But its looking great so far! Keep hacking/modding/ and posting!! :)
So a big toque increase pluse a top speed of 80 mph would suffice as the bike does not weight very much , and will have a tendency to get blown off road by trucks and strong winds . I think even a 67 mm. Piston version should be built as well . Good luck. Please just let me just buy your kit . As soon as possible as am old and can we pre-order . I want to give you guy's my money . Please help and comment.
Thanks for the update I have ordered the kit and now wait for things like a new carb choice and possibly a cam and a cylinder head a exhaust pipe . Your research is always much appreciated and videos are captivating.
I'd like to see you test switching to Amsoil synthetic after an initial break in with conventional oil on some 2 strokes or 4. I just bought one of these XR150L's and plan to switch. I picked up some mph on several 2 stroke 50cc motors switching to Amsoil synthetic after initial breaking it in using conventional oil, experiencing a 2nd break in w/ Amsoil, and ultimately the resulting increase in speed. Motors sounded better and lasted longer as well. I hope the same happens with my XR150L. I have built a lot of 50 cc bike mopeds and doing the , what I call a "double break in" (DBI) just described, seemed to add 5-8 mph. Thing is going to synthetic on a 50cc with lots of miles did not get the same benefit. Wish I had this system to test exactly how it improved using the DBI.
Even 80 mph would suffice as the bike does not weight very much , and will have a tendency to get blown off road by trucks and strong winds . I think even a 67 mm. Piston version should be built as well . Good luck. Please let me just buy your kit . As soon as possible as am old and can we pre-order .
Does the CDI can increase HP. I tried swapping the CDI for 100cc 2 stroke Yamaha to a 135cc 2 stroke Yamaha and the 135 significantly loss HP. And also I saw a post where that big bore kit destroyed his XR engine. The piston seized. In Asia most big bore kit replacement the mechanics also increases the diameter of oil lines.
I would be surprised if it blew up , because honda already has a XR190L. So that factory cylinder can be bored for larger a piston . We in North America should have been blessed by honda with this XR190L injected and a gas gauge. Australia XR190L has twin side stands , left and right humm. Imagine that . Good for lefties or rightness. LOL.
It this video they said they had to clearance the piston, if the guy in the other video didn’t do that then it definitely would’ve destroyed some stuff.
We can’t really make videos on the progress of every single kit we sell. We truly try but we stopped on the ch80 when the general feedback was that nobody really wanted performance parts for them. We did a lot of polls on it. We spent about $50k a year on UA-cam labor etc to get back about $5000 a year in revenue so it’s really hard to make that math make sense as a business. We have to invest in what works and keeps the doors open :)
I’ve literally not heard one of ours that’s failed. It’s kicking no problem took it to Moab for a week of brutal riding We bought another business and a new building so UA-cam has taken the backseat for the time being as it’s not the priority
the intake track and the exhaust are your limits. aka carb intake port valve to the exhaust valve and out your exhaust pipe. it only flows so much. by adding capacity to the cylinder it only moves that power to a lower rpm because the larger bore draws in more air. you will lower your upper rpm as well . adding more available air to the intake and exhaust side will in turn allow the engine to produce more power the higher the rpm goes. i suggest porting the head and adding bigger valves. adding more duration to the cam can help as well because it allows the valves to stay open longer which allows more air to be drawn into the cylinder. you guys are on the right track. i cant wait for the next video!
It’s cool seeing someone experimenting with one of these so deep ! Anxious to see the next results
I'm definitely looking forward to the conclusion here
So hyped on this
Nice to see affordable motorcycles that are not Chinese!
who's gonna tell him...
@@Nick_Spencer😅
Let him live 😂
“Made” in Mexico (just don’t ask where all the parts are sourced from:-)
@@MishMashMotoMade in Mexico, by a Chinese/Honda joint venture as well.
Great video. It will be interesting to see what happens when you start changing lift and duration with trying various cams.
Definitely!
I like this bike because it's simple, very low on maintenance, can take a beating, is easy and fun to ride, and BECAUSE it's slow. It gets me to the trails 30 miles away at 50-55mph no problem, and gets me around with ease and comfort once I'm there. However I do think it's cool to see all these mods people are doing to tweak it to their liking and just show what's possible.
Thanks for your efforts and testing much appreciated.
All is looking good to squeeze more out of this value based bike . Making it best bang for the money .
With a cam and pipe and possible head work , these upgrades will be no doubt best improved bike this year . Love you guy's videos .
Love to see these big bore kit tuning videos. I’m going to rehear my gy6 now and see if I can hold 60mph
Hey I Love Your Videos Man
can't wait for the finished at perfect result of this bike.
SO EXCITED FOR IT.
i cant wait till you sell the parts on the shop cuz im soo doing this to my bike!!! pleasee keep up the work!!
I wonder when it’ll be available.
Thank you very much for the ideas and on point information! I’m putting 66mm on my 150L. All the way from the philippines
Can’t wait for it to be finished. Thank you for the hype
I went with a 70mm kit with a cam. It would be cool to compare with the expensive ones.
Did you just install only bore kid 66? Or change carburator too? I'm from Philippines too, bro)))
Awesome!! Please try it with the SmartCarb!!
Or even just a cheap EFI kit.
Which one would you suggest?
@@jaybraxton5625 out of the SmartCarb or an Efi Kit?
Love this!
Awesome! Been looking to get some more ponies out of my 150l without having to sell. Are there any downsides to doing the conversion? Not worried about warranty but more longevity
No downsides
@@Scooterswapshop Almost ... but making more power takes more fuel. And that will reduce the range. A big deal on a touring bike, but I don't think anyone will care on these.
I'm finalizing finances on my 2024 at the dealer tomorrow.
Going from a vStrom 1000 to a vStrom 650 was an easy change.
From the vStrom to the XR150 will be HUGE, so its going to get some mods.
But its looking great so far! Keep hacking/modding/ and posting!! :)
I have a question. Is the 2004 Honda XR125 engine significantly different from the XR150 engine, and will this kit fit the XR125?
So a big toque increase pluse a top speed of 80 mph would suffice as the bike does not weight very much , and will have a tendency to get blown off road by trucks and strong winds . I think even a 67 mm. Piston version should be built as well . Good luck.
Please just let me just buy your kit . As soon as possible as am old and can we pre-order . I want to give you guy's my money . Please help and comment.
Shoot us a message on the app we will have cylinders soon
Thanks for the update I have ordered the kit and now wait for things like a new carb choice and possibly a cam and a cylinder head a exhaust pipe . Your research is always much appreciated and videos are captivating.
Good job guys!
Cool
Hope the brakes are still sufficient with nearly double the power.
They’re plenty
I'd like to see you test switching to Amsoil synthetic after an initial break in with conventional oil on some 2 strokes or 4. I just bought one of these XR150L's and plan to switch. I picked up some mph on several 2 stroke 50cc motors switching to Amsoil synthetic after initial breaking it in using conventional oil, experiencing a 2nd break in w/ Amsoil, and ultimately the resulting increase in speed. Motors sounded better and lasted longer as well. I hope the same happens with my XR150L. I have built a lot of 50 cc bike mopeds and doing the , what I call a "double break in" (DBI) just described, seemed to add 5-8 mph. Thing is going to synthetic on a 50cc with lots of miles did not get the same benefit. Wish I had this system to test exactly how it improved using the DBI.
How much do I need to take off the bottom of the piston?
So you think 90mph is possible? You bought the whole speedometer😂
I do yes
Even 80 mph would suffice as the bike does not weight very much , and will have a tendency to get blown off road by trucks and strong winds . I think even a 67 mm. Piston version should be built as well . Good luck.
Please let me just buy your kit . As soon as possible as am old and can we pre-order .
When will the big bore kit be available for the XR 150?
It’s on their website but sold out already lol.
Can you give me cam specs on stock vs. your cam? I'm looking at just swapping my cam.
Im curious how much you have to mill off below the wrist pin to prevent the lock at BDC.
I was also curious about this.
If I used the 222 big bore kit , what carb jets and cam do you recommend and do you recommend different sprocket sizes ?
Is the only thing needed for this the 222cc kit off your site and the jets?
Big bore kit, Carburetor, Cam and exhaust vs the cost of buying a 250 bike. What are the cost savings?
You’d need to do the math when comparing bikes. The cost to build this is dirt cheap. Less than a sport bike exhaust
Does the CDI can increase HP. I tried swapping the CDI for 100cc 2 stroke Yamaha to a 135cc 2 stroke Yamaha and the 135 significantly loss HP. And also I saw a post where that big bore kit destroyed his XR engine. The piston seized. In Asia most big bore kit replacement the mechanics also increases the diameter of oil lines.
I would be surprised if it blew up , because honda already has a XR190L. So that factory cylinder can be bored for larger a piston .
We in North America should have been blessed by honda with this XR190L injected and a gas gauge. Australia XR190L has twin side stands , left and right humm. Imagine that . Good for lefties or rightness. LOL.
It this video they said they had to clearance the piston, if the guy in the other video didn’t do that then it definitely would’ve destroyed some stuff.
Pz30 carb or ns200 carb works well un this cilinder
Do you have to grind down the bottom of the piston?
No
Awesome
A little shocked how low the HP is. Honda could have done much better.
Where’s the actual results from your CH80 carb swap kit for 300$ you think you’d actually show a video of one property jetted and ripping along
We can’t really make videos on the progress of every single kit we sell. We truly try but we stopped on the ch80 when the general feedback was that nobody really wanted performance parts for them. We did a lot of polls on it. We spent about $50k a year on UA-cam labor etc to get back about $5000 a year in revenue so it’s really hard to make that math make sense as a business. We have to invest in what works and keeps the doors open :)
Did it not survive? No follow up. Every 70mm big bore video doesn't have any follow up video's. I am starting to think no one can get them to live.
I’ve literally not heard one of ours that’s failed. It’s kicking no problem took it to Moab for a week of brutal riding
We bought another business and a new building so UA-cam has taken the backseat for the time being as it’s not the priority
@@Scooterswapshop congratulations. That is good to hear.
mpg
🤭