Dunno man, looked like it sounded and looked faster on the 3’s for some reason. But you know the bike and was riding so appreciate your feedback on this one!
Yeah, the rad valve did make good power. My brother actually preferred it. For me the throttle control up in the high revs and how freely it revved with the v force is what sold me on the v force. But both actually did well, just differently
Awesome information thank you, I live near the new 74mx and motobros, but would love to know where you can do trail riding in this area! Capecoral/ punta gorda
Hello and thanks! I know there are lots of trails to ride down there but dont know where exactly. It seems as law inforcement is chasing people out of them free riding areas anymore.There is a place up by me here in Parrish called Willow Rd which is pretty good and big but from time to time to cops chase people out of there too. Bone Valley in Polk county is a decent off road park and is about just over a hour from you, its state ran and is actually pretty nice. Then there is Croom which will be about 2 hours from you and that place will always be there.
Thank you for you work, in the realm of details this helps the purchaser. You should be compensated from the manufacturer as no one really knows any real details, until now with YOU
Ahh thanks man. Unfortunately I don't think any manufacturer would be willing to pay for a review unless it was promised to go in thier favor. When I put these reviews together its more about getting to the bottom of it for myself and for my viewers. I wish I had the funds to do more of these faster, would like to compare pipes and other things like that. Maybe one day! Thanks for watching and thanks for the comment. Appreciate ya!
If you ride your bike enough and you pay attention to how your bike runs, and know the riding area like the back of your hand, you get a real good idea of where the power is and how much it is, (more or less). Back when I raced a bit, (and practiced a lot), with my 1988 CR250. I remember not being able to hear my bike before the gate dropped, yet I still knew exactly where the best power was for a great start. You can tell 1hp if you are in tune with your bike. It takes seat time, paying attention to your bike, knowing the stuff you are riding on, and the nay-sayers would get there too. :)
I just bought a yz125 2003 im getting really good every day after work i ride i want to race against new bikes my yz very strong 💪 im kick there asss@@UpAllNight91
Yes very true get to know ur bike I have yz125 2003 an I ride everyday im getting good I want to race against new bikes my yz fast bro look out new bike im coming to kick ur buttt
You can have a cylinder reed with the reed boost port all the way into the cases also. If the reed tips are in the way, that is an obstruction of course, but I turn 46cc piston port engines to cylinder reed valve engines, (the reed petals are not in the way fro those builds), so I feed the added port, (I mill one in the cylinder) with a window in the piston, and the tunnel from the cases, (like the rest of the ports are feed).
Thx for the test. Now I don't have to feel bad missing out on power not running the V3. When talking to the Dutch Yamaha guy responsible for the kit he said it made more power with the V3 on the dyno, but I trust your "but dyno" enough not to feel that I'm sacrificing much (or anything) going for the durability of the V4. Might have to try the Boyesen though to see if the bottom gain is worth a little top (doubt it, but you must try 🙂)
Yeah I really was hoping the 3 would perform better than the r I was currently using because I'm always looking for better but it just didn't compete once on the track. The V4 makes better power and more power and the 3. Its interesting you said the kits designer said the 3 made more power on the dyno. If thats true I wonder why. Or maybe it just blended in better with the rest of the build? Would be cool if someone who has the gytr kit would toss back on thier V4 and see.
Also the rad valve surely does the best down low and doesn't fall off the pipe nearly as easy. Its good if thats what your looking for. But if you like to rev her to the very top alot then the v4 is the way to go
I have not torn my YZ top end down yet, (only about 10 hours on it), but I can't believe Yamaha blocked off the reed transfer port with the reed stop plate. No wonder why my 2019 YZ250 is the slowest 250 I have ever had. I know how to fix that. :) Also, it clearance permits, remove the spacer between the reed valve and the cylinder. You should gain a good boost in the mid range. I used to add a spacer those out about 5mm to tame a engine down a bit. I think it is removable, but i still have to ride test mine.
The V-force reeds have always been a better lower rpm/ mid range reed. It was the double petal design that made that happen. I am sure the V-3 is better than stock for low to mid-range. Does Boyesen still make the "Rad Valve", (included a entire investment cast aluminum intake.),? If mid into big top end power is what you want, (for a track, what you have to have, and you still did not pass that 4-stroke. lol), you may find that the Rad Valve offers even more mid and high top.
i found v3 to be awfull. put the stock ones back on. v3 caused this nasty bog at high revs/part throttle . i pulled them out after 15hrs, noticed cage was distorted and reeds bent(apparently this is a feature;)
You are probably right about the reed stop on the V-4 for not being offered for the 250. But I know the reed stops don't have to be that long, (the reeds don't open that much), or could be designed to not cover that port tunnel.
It probably would be a better higher rpm reed for the 250 too. They keep trying to keep up with 4-stroeks on fast 4-stroke tracks, and it ain't gonna happen (sans equal displacement.). I am gonna be in the trails, and judging a bit from this vid, I made the right choice. Wait,---it was the only choice for the 250 (Sans Boyesen). :) I bet they are just selling out the 125 V-3 with the Gytr kits to get rid of the last remaining. If your not getting the kit, just a reed,---you would buy the V-4 and they know it.
the GYTR kit is a Euro kit , isn't it ? i didn't think you could get it in the US and have to order from europe or australia. being so, and being the $ is a new model , and a US brand. that may be the reason for the V 3 being offered in the GYTR kit , vs the 4. id not go by that as a gauge of their pick without speaking to them . id not be surprised if they just use that picture, but provide a 4 at this point . theres go to the a reason yamaha is using them from the oem . id think the 3 would be cheaper being the " old " model . id also not be surprised if the difference from 3 to 4 may call for some jetting changes .
Yes its a euro kit. Here is a link where a guy unpacks the kit and he even comments he's surprised it comes with a 3 ruclips.net/video/bBzl0CZGyVY/видео.html . The 2022 and 2023 already comes stock with Vforce 4r. So thats why I was curious why yamaha would go from a 4r down to a 3 in the gytr kit. The jetting felt spot on with the 3s, didn't feel it needed any different jetting than the 4r. And I don't think any amount of jetting could have saved the 3s compared to the 4r. In the trail the 3 felt good and I expected it to do well on the track. But once on the track it was just down on overall HP and that was disappointing because I'm always hoping to find more HP lol
If you did mods for more high rpm power, the v-3 was the wrong choice. For wide open tracks, the reed stops control the petals better, and it was 10% bigger. Great for wide open. Not sure if the Rad valve is better, (call them for the best high rpm set up). But for anything else other than a wide open 4-stroke MX track, on a stock bike or a bike with more mid range mods, the V-3 I am sure, is on top for the YZ250, (and 125 if trail riding.). No offense, but IMO, it may have been an injustice to the V-3, when it is really made for lower rpm torque, and a good fit anywhere off of a 4-stroke MX track. The only Bike racing that is close to MX today as far as what is needed from the motor is Desert racing, and MX used to be closer to hare scrambles. :) Come on man. When is the last time you squared off a corner? :)
I agree, the 3 may be better at making bottom end. On this 125 I am focusing mainly on mid to top and the 4 seems to be better up there. The 3 does great on the 250 though
Dunno man, looked like it sounded and looked faster on the 3’s for some reason. But you know the bike and was riding so appreciate your feedback on this one!
Yeah, the rad valve did make good power. My brother actually preferred it. For me the throttle control up in the high revs and how freely it revved with the v force is what sold me on the v force. But both actually did well, just differently
Awesome information thank you, I live near the new 74mx and motobros, but would love to know where you can do trail riding in this area! Capecoral/ punta gorda
Hello and thanks! I know there are lots of trails to ride down there but dont know where exactly. It seems as law inforcement is chasing people out of them free riding areas anymore.There is a place up by me here in Parrish called Willow Rd which is pretty good and big but from time to time to cops chase people out of there too. Bone Valley in Polk county is a decent off road park and is about just over a hour from you, its state ran and is actually pretty nice. Then there is Croom which will be about 2 hours from you and that place will always be there.
Thank you for you work, in the realm of details this helps the purchaser. You should be compensated from the
manufacturer as no one really knows any real details, until now with YOU
Ahh thanks man. Unfortunately I don't think any manufacturer would be willing to pay for a review unless it was promised to go in thier favor. When I put these reviews together its more about getting to the bottom of it for myself and for my viewers. I wish I had the funds to do more of these faster, would like to compare pipes and other things like that. Maybe one day! Thanks for watching and thanks for the comment. Appreciate ya!
If you ride your bike enough and you pay attention to how your bike runs, and know the riding area like the back of your hand, you get a real good idea of where the power is and how much it is, (more or less).
Back when I raced a bit, (and practiced a lot), with my 1988 CR250. I remember not being able to hear my bike before the gate dropped, yet I still knew exactly where the best power was for a great start. You can tell 1hp if you are in tune with your bike. It takes seat time, paying attention to your bike, knowing the stuff you are riding on, and the nay-sayers would get there too. :)
I 100% agree
I just bought a yz125 2003 im getting really good every day after work i ride i want to race against new bikes my yz very strong 💪 im kick there asss@@UpAllNight91
Yes very true get to know ur bike I have yz125 2003 an I ride everyday im getting good I want to race against new bikes my yz fast bro look out new bike im coming to kick ur buttt
You can have a cylinder reed with the reed boost port all the way into the cases also. If the reed tips are in the way, that is an obstruction of course, but I turn 46cc piston port engines to cylinder reed valve engines, (the reed petals are not in the way fro those builds), so I feed the added port, (I mill one in the cylinder) with a window in the piston, and the tunnel from the cases, (like the rest of the ports are feed).
Nice!
Thx for the test. Now I don't have to feel bad missing out on power not running the V3. When talking to the Dutch Yamaha guy responsible for the kit he said it made more power with the V3 on the dyno, but I trust your "but dyno" enough not to feel that I'm sacrificing much (or anything) going for the durability of the V4. Might have to try the Boyesen though to see if the bottom gain is worth a little top (doubt it, but you must try 🙂)
Yeah I really was hoping the 3 would perform better than the r I was currently using because I'm always looking for better but it just didn't compete once on the track. The V4 makes better power and more power and the 3. Its interesting you said the kits designer said the 3 made more power on the dyno. If thats true I wonder why. Or maybe it just blended in better with the rest of the build? Would be cool if someone who has the gytr kit would toss back on thier V4 and see.
Also the rad valve surely does the best down low and doesn't fall off the pipe nearly as easy. Its good if thats what your looking for. But if you like to rev her to the very top alot then the v4 is the way to go
I have not torn my YZ top end down yet, (only about 10 hours on it), but I can't believe Yamaha blocked off the reed transfer port with the reed stop plate.
No wonder why my 2019 YZ250 is the slowest 250 I have ever had. I know how to fix that. :)
Also, it clearance permits, remove the spacer between the reed valve and the cylinder. You should gain a good boost in the mid range. I used to add a spacer those out about 5mm to tame a engine down a bit. I think it is removable, but i still have to ride test mine.
The V-force reeds have always been a better lower rpm/ mid range reed. It was the double petal design that made that happen. I am sure the V-3 is better than stock for low to mid-range. Does Boyesen still make the "Rad Valve", (included a entire investment cast aluminum intake.),? If mid into big top end power is what you want, (for a track, what you have to have, and you still did not pass that 4-stroke. lol), you may find that the Rad Valve offers even more mid and high top.
a prefer vforce 4r because there is a layer of rubber to make it durable
The rubber is nice, I agree.
i found v3 to be awfull. put the stock ones back on. v3 caused this nasty bog at high revs/part throttle . i pulled them out after 15hrs, noticed cage was distorted and reeds bent(apparently this is a feature;)
Yeah I wasn't too impressed with the 3 on this bike either. But the 4R is pretty good
You are probably right about the reed stop on the V-4 for not being offered for the 250. But I know the reed stops don't have to be that long, (the reeds don't open that much), or could be designed to not cover that port tunnel.
YZ250 Model nbr V4X07EM V-Force VForce 4X Reed Valve System
Yes sir, I tested the VFORCE4X out on the YZ250 too. Here is a link ruclips.net/video/WleTE9GVRMk/видео.htmlsi=sEF180AUi7N4SxRf
Not on the videos topic but how is dawn dish soap and tide Laundry detergent safe on dirt bikes but not cars ??
LoL
@@UpAllNight91 how is it???
@@UpAllNight91 how is it????
Predovic Ranch
Great review Like always And didn't get Vaccinated Awesome video brother
Thanks Brother! Yeah both of us never got vaxxed. It's ok, we are both feeling better. Was just like a flu really
It probably would be a better higher rpm reed for the 250 too. They keep trying to keep up with 4-stroeks on fast 4-stroke tracks, and it ain't gonna happen (sans equal displacement.).
I am gonna be in the trails, and judging a bit from this vid, I made the right choice.
Wait,---it was the only choice for the 250 (Sans Boyesen). :) I bet they are just selling out the 125 V-3 with the Gytr kits to get rid of the last remaining. If your not getting the kit, just a reed,---you would buy the V-4 and they know it.
the GYTR kit is a Euro kit , isn't it ? i didn't think you could get it in the US and have to order from europe or australia. being so, and being the $ is a new model , and a US brand. that may be the reason for the V 3 being offered in the GYTR kit , vs the 4. id not go by that as a gauge of their pick without speaking to them . id not be surprised if they just use that picture, but provide a 4 at this point . theres go to the a reason yamaha is using them from the oem . id think the 3 would be cheaper being the " old " model . id also not be surprised if the difference from 3 to 4 may call for some jetting changes .
Yes its a euro kit. Here is a link where a guy unpacks the kit and he even comments he's surprised it comes with a 3 ruclips.net/video/bBzl0CZGyVY/видео.html . The 2022 and 2023 already comes stock with Vforce 4r. So thats why I was curious why yamaha would go from a 4r down to a 3 in the gytr kit. The jetting felt spot on with the 3s, didn't feel it needed any different jetting than the 4r. And I don't think any amount of jetting could have saved the 3s compared to the 4r. In the trail the 3 felt good and I expected it to do well on the track. But once on the track it was just down on overall HP and that was disappointing because I'm always hoping to find more HP lol
Nichole Manors
Like the vids don’t enjoy the music keep it up rather here the bike
Thanks man! And thanks for the suggestions. I think I also need to invest in a better go pro. Mine is old and it shows lol
If you did mods for more high rpm power, the v-3 was the wrong choice. For wide open tracks, the reed stops control the petals better, and it was 10% bigger. Great for wide open. Not sure if the Rad valve is better, (call them for the best high rpm set up). But for anything else other than a wide open 4-stroke MX track, on a stock bike or a bike with more mid range mods, the V-3 I am sure, is on top for the YZ250, (and 125 if trail riding.). No offense, but IMO, it may have been an injustice to the V-3, when it is really made for lower rpm torque, and a good fit anywhere off of a 4-stroke MX track. The only Bike racing that is close to MX today as far as what is needed from the motor is Desert racing, and MX used to be closer to hare scrambles. :) Come on man. When is the last time you squared off a corner? :)
I agree, the 3 may be better at making bottom end. On this 125 I am focusing mainly on mid to top and the 4 seems to be better up there. The 3 does great on the 250 though
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