WR250R DYNO TEST - Lindsay Machine Racing
ฝัง
- เผยแพร่เมื่อ 4 ต.ค. 2024
- Initial testing of MiniTstops Yamaha WR250R "Daisy Chain" in stock form. It has an FMF pipe, K&N filter, and power commander, which came on the bike when he bought it. Unfortunately, in my excitement to get over to the shop to dyno test the bike, I failed to check and clean the air filter. It is not recommended to run a K&N air filter out in the dirt, it lets to much dust into the engine. It's recommended to use a well oiled foam filter, which will out flow, and keep dirt out of your expensive engine. Let's talk about some upgrades here folks!!
If you have machining or Dyno needs, call up Lindsay Machine Racing folks, they're freaking awesome (801) 561-7081.
![[UNCUT] “บอสณวัฒน์” ลากไส้!! ใครหนุนหลัง "แม่ตั๊ก ป๋าเบียร์" I คนดังนั่งเคลียร์ I 30 ก.ย. 67](http://i.ytimg.com/vi/QlD7mU2KKRk/mqdefault.jpg)
I knew a clean air filter is the life of a motor and I knew a dirty one could rob you of power but I never thought it could rob you of 2 horse power. Cool info. Stay safe
My dyno tuner, an authorized DynoJet Tuner, is tuning my wr250r that has a power commander v and said he could not tune the bike with the air box door off, says it's too lean and not enough fuel to match the air flow. He told me I would actually lose performance with the door off. But yet your dyno tuner gained an extra 2 hp with the door and air filter off, however, your tuner said it was at totally leaned out with the air filter removed. From my understanding being too lean can cause problems for your bike.
+CycleCruza The air filter on this bike was really dirty, so there was very restricted airflow. By removing it, we restored airflow, and thus the gain in horsepower, even though it was slightly lean. ( This was just a pre-test on this motor before we modded it out, so didn't spend a lot of time tuning it) With a power commander, you can tune the air flow ratio to be perfect no matter what air situation you have. In other words, you could remove your airbox cover, and tune your bike with it off for 13.2:1 air fuel ratio (best ratio for the balance of max power and economy) and it would run perfectly. Whether you run an enclosed air box, or not, air filter or not (crazy) does not matter, as long as you adjust and tune your bike for proper air fuel ratio in that condition. Once the tune is right, you basically want to keep your bike in that configuration, or plan on a re-tune. Great observation bud.
MrDuhfactor Thanks for the reply! I wish you could tell that to my tuner, he said he could not adjust my power commander with enough fuel to match the airflow with the modded air box door (cut out center of door and put foam filter there to keep dirt from coming in). I just gave a him a stock door amd had him removed the modded door. It was tough to argue with him because he is a former AMA superbike racer and team owner and he is an authorized dyno tuner for dynojet and has been tuning bikes for over 16+ years. I might take it to another tuner who specializes in dirt bikes and see they can do it. It doesn't look like he does dirt-bikes very often.
Wow, I can't believe he told you that, he should know better. The power commander can dump so much fuel in there, it would swamp your motor. You would not want him to tune a big bore stroked motor then, because the amount of fuel needed for Minitstops bike after boring and stroking was waaaayyyyyy more than what was needed to compensate for a completely open airbox. sorry dude.
MrDuhfactor My WR250r update: Dyno Tuner said there was a problem my power commander, one of the pins in the connector was pushed back, was causing it not to communicate properly. He completed the map for the stock door, now he's going to try and tune the bike with my air box door mod again (Door hollowed & covered with filter). So if the second map is successful I'll have two maps on my switch, one for the stock door and one for the modded door.
That's more like it!!! Good job!!
Enjoying these. Just stumbled upon this series
Super! I have been reading about K&N vs UNI for the XR650. Poll says use the UNI. Flows better and keeps dirt out
Good call buddy, any well oiled foam filter seems to be pretty good. I remember years ago someone telling me not to run a K&N in the dirts, and my bike had one at the time. When I removed it, there was a track of dirt going right down the intake into the motor......Uni is a good one bro....
MrDuhfactor Oh man, this makes even the non-gearheaded guys like me get excited. I'm jealous... Daisy Chain is going to be so freaking hot! Lovin that new intro MrD.
Two things #1. Dude, that new intro is boss! #2. I was just about to get a K&N filter for Xena. What should I get instead for an aftermarket filter? I'd love to Dyno run her!
I'm excited to follow this series MrDF! Minitstop is gonna have SOME FUN on Daisy Chain 2.0!
It should be a blast of a bike to ride, aye??
Shit, I totally forgot we said we were going to pick up some K&N cleaner on the way to NOAB and clean that sucker before the trip! I got so far behind on bike prep with getting Daisy Chain farkled out last minute. Oh well it all worked out and will be a killer machine! Nice new rear tire on there, that a metzler? Looking forward to the project!
It's all good Homie.... :) Remember I took the K&N filter cleaner down with us?Lol I looked for it last time I was down there, but it was gone, so I figured you guys did clean the filter, and all that was just St.George dust..... Ha ha!!! It's all in good fun brother!!!
Oh that's right, I don't know if we grabbed it from you or not? I'm pretty sure we didn't clean that thing though, got busy with graphics and then rode till dark all the other days :)
That's good info to know about K&N filters in the dirt. I think that my KLR has a K&N that may need to be changed. I think that we may all be a little guilty of slacking a bit at times on air filter maintainence.
I was so excited to get over there that I totally overlooked it..... good lesson learned!!
I'm headed to the garage right now to clean MY air filter. Thanks for the reminder.
This is going to be an awesome series BUT, I've heard horror stories of people who lose ALL reliability and longevity of a WR250r by chasing a couple horsepower. Some people can get those up to 35 horsepower on forums (Supermotojunkie etc.) but they blow up the same as motocross bikes, when if you're in the right state (Utah is a good one I hear) you can buy a motocross bike and for less money convert it to street legal.
That is my concern as well. My 290 at home is already at 32hp and she's been just fine for more than 10,000 miles. If she blows up, I'll get her fixed/get a new one. No big deal ;)
FailsAndFights minitstop Most of the time, bikes blowing up are a result of taking excessive risks, and problems setting up a safe good tune. I've seen lots of motors blow up from bad tunes, and people messing with cam timing, not knowing what their doing, or not knowing where the safe advance limit is. My name is on this motor, so I'm not going to take any unnecessary risks to try and see who's motor will pull 1/2 horse more than the other.... If we can build a good, strong, safe motor that will last, I'll be a happy man.... and we'll do long term follow up and see how she does. This bike has a 6th gear, which is way cool, but yes, you can put lights on a motocrosser and make it street legal here. Good thoughts FailsAndFights.....
MrDuhfactor I originally wanted a CRF450X. Remember that? :p. This deal was just too good to pass up.
minitstop I just recently got a CRF450x, best bike I've ever owned :)
BUT, you can only have so many bikes at once and a good deal is a good deal. I'd definitely put the 450x on the "bucket list" of bikes though. Gotta get one eventually, if I were you (you already have two badass 250s) I'd wait until fuel injected 450x's came out.
I know mine actually dusts 450r's torque wise but fails horsepower wise. But while a 450r is on the rev limiter, I just shift to the next gear and blow past them. Electric start rocks too, you've never kicked a bike harder than a 450 4 stroke, even with auto decompress cams.
Love the new intro, by the way! Yeah, we're not big K&N fans. We prefer a well oiled Twin Air filter for our DR650. Did you ever put Katsumi on the dyno after you finished her up? At any rate, this is going to be an awesome project. We love 250s!
Hi folks!!! Top of the mornin' to ya! I never did put Katsumi on the dyno, but I'm tempted to do that at some point. I had trouble getting her clutch to hold the new horsepower and torque, and finally put in a monster set of clutch springs, which locks the clutch up good now, but you have to be popeye to pull the clutch in :( So, I've got some new springs to install and try that are 38# springs. Stock uses 25# springs, and I put 3 75# springs in, with 3 25# stock springs last time, TOO MUCH! Ha Ha!! So, I'll try 3 25# stock springs, and 3 38# springs, alternating every other one, and see if that works better. Once that's done, and I get a little free time, maybe I'll put her on to see what she'll do :) The DR is an awesome bike by the way!!
Love this series wish AB could ship his bike over too it needs so much tlc!
That poor bike..... she's a good girl who just has a few "issues" right now.... and what good girl doesn't??? right???? Lol..... I'd love to get my hands on it to....
That was cool to watch. Can't wiat for more!
I can't wait for the fully tuned bored and stroked, ported, and tweaked motor to take a crack at the Dyno!!! That will be fun aye??
MrDuhfactor Yeah it will be! It will be very interesting to see the gains.
The AFR looks like it moves around a bit, to be expected somewhat. Given the multiple runs, can you comment on what the average AFR profile was and how stock was the machine? I believe it had a pipe on it already (still had a cat or no?), and the airbox was stock (the flapper) except for the dirty K&N?
I have a similar bike; 2018 with a FMF pipe and no cat. My curiosity is the consensus seems to say these bikes run lean. I do not see that from your dyno. I'm hesitant to remove the flapper...I'm not sure if it was supposed to work in conjuction with the EXUP exhaust valve or not, or what it's affects might be on the AFR in general. My guess is there's enough margin to work with.
+M VICE You're making an assumption based on the limited view of this video. I cut out an hour of tuning without the air filter in place. It was me not checking the air filter before we dyno'd the bike, (Not the shops responsibility) and it was the actual dyno tuner who suggested looking at the air filter, and that's when we discovered it. I edited out all of that stuff, including the tuning time to make the video not an hour long. You need to get your facts straight before you go making negative comments about a highly skilled and reputable tuner.
This thing is going to be so sick! And 'DAT INTRO! ;)
Daisy Chain is gonna be so sick, she will infect me with giggleitis. It's hecka contagious!
eveRide ADV minitstop We sure had the giggleitis running her on the Dyno and doing a little tuning that night. Dave is like a little school kid when it comes to tuning, he's like "That fuel map is all over the place, lean here, rich there......we can clean that up" It should run really clean when Dave is done tweaking her out. And dat intro..... she's sick dude!!!! Thanks Tyler!!!
Wow, that filter was pretty bad! Watched a few videos of WR250R with a turbo and after tuning they were making around 56hp. It will be interesting to see what you get naturally aspirated. Good luck with the build, we'll be waiting for the vids :) *T4S*
Hi buddy! We're going to try and build a solid yet dependable dirt motor.... I don't think we're going for the all out horsepower war here..... Let's see what we can do!
Im sure Mr D will agree that its really the % increase thats interesting, not the actual number. 2hp gain from 25hp (8% increase) shows how important it is to keep the filter clean!
You can make dynos read anything. A real 56 would be a time bomb with a short fuse I'd think.
MrDuhfactor
and remind people that that's rear wheel horsepower so at the crank that's probably 32-34
OtisENGINEuity Yes. This.
Sum4Seb, I meant to clean it before NOAB, but didn't have any K&N cleaner and just got behind on stuff. We were totally going to pick some up on the way down and forgot.
Mrduhfactor do you think the same holds true for k&n filters in cars and trucks
Hi thanks for video do you need a to upgrade the crank on a wr250r if you put the 290 big bore kit and is reliability the same ride safe mate 👍
You do not need to upgrade the crank to do the Athena big bore kit. Yes, it is as reliable as stock with the Athena big bore kit. Even with the stroker crank and Athena big bore kit (309CC), the bike is still dead reliable. The first things to go on these motors is the intake valves at about 29k miles....If people do good upkeep by changing oil and filter regularly, and keep the stock air filter clean and oiled.
@@MrDuhfactor thank you
Question: I have a K&N filter in my CRF250L and according to K&N specs, the filter they make for this is made to their dirt bike filter specs to cope with very dusty conditions. So I am wondering if the caution about K&N filters allowing dirt into the engine refers only to their road bike filters. Any thoughts?
The reason I went with K&N is that the UNI Filter foam 2 stage filter made for this bike has problems with the outer foam not sealing will over the core foam and frame, allowing stuff through on the edges. Cool dyno run there. Looks like Minitstop is going to have an awesome ride.
Hey buddy ;) We dont recommend any K&N filter be used for off road riding. If your staying strictly on the street, then its ok. Even the off road version is not as good at trapping out dirt than the stock filter. Their dyno tests show that the stock air filter flows better and traps dirt better than K&N does. They end up rebuilding engines all the time from use of a K&N filter, which didn't keep out dirt. Sorry bro.... There are better ways to gain a little power, like a properly dyno tuned bike will do very well with a stock foam air filter. Sounds like a great bike, good luck!
Cheers, I appreciate the information. I'll rethink and maybe go back to the stock filter. Only problem there is the stock air filter is a paper element that costs over $30 each. Kinda sucks (pun not intended) if you ride in dusty conditions. That's why I initially went with the foam UNI Filter, but like I say it doesn't sit well and leaks dust through, plus it reduces the surface area on the throttle body side compared to stock by over 60%. Again, kinda suck, lol.
OMG. You guys rule!!!
I'm not sure Homie.....Who forgets to clean the air filter before a Dyno run??? DUH...... :)
K&N are junk love the wr250 just bought one great info
Very interesting for sure!!!
Can't keep my grubby fingers off good stuff I guess....
This makes me Giddy !
I'm replacing my K&N filter ASAP.
I had no idea it was worth 2 horse on a 250!!! We're taking Miss Yamimoto's valves down to the machine shop to weigh them this week while waiting for me to get time to pull Daisy's motor out..... time to figure out some valve train options my friend. Miss Yamimoto has donated her inner parts for science!!!! Lol
HAHAHA eveRide ADV knows about the dirty air filters too!
Awesome vid! minitstop your a LUCKY guy :p
We're all lucky.... in that we've not blown up a motor or two, or three from stuff like that, which we all do :)
Heck yeah! mine looked like a mud ball when I was doing winter cleaning LOL
MrDuhfactor
Uh, yeah... #dumb MX novice, #ruined new KTM 495... ( #hanging head in shame... )
DRZcoffeegirl Ride I am very lucky, indeed! It's nice to have awesome people in one's life and not you know...um...drug dealers? lol. Those aren't very good with motorcycles! Usually. I think.
gncc1race ;/ Ouch.
MrDuhfactor do u know wit the operating temp is for the drz400?????
Well, I'll give a thumbs-up but, considering how little MinuteStop weighs and his technical style, I would (personally) recommend against doing the Big-Bore and all that cam and valve work ... For the money, I doubt he would personally make that much more use of the added performance. ... I mean ... This is going to be a swell series, and all ... But I think that a properly tuned and jetted and piped STOCK displacement would be PLENTY of oomph for MinuteStop to utilize, in that UTAH terrain. ... JMO. ... Most of what he needs is torque and you could achieve that with sprockets and tuning and a tunable exhaust.
There's no jetting on a fuel injected bike :p It'll be just fine. I ride the crap out of my Athena'd/Power Commander/Full Exhaust WR290R here at home and yes, I use all of it's power and have been doing so for over 10,000 miles. Daisy Chain isn't staying in Utah. She's going to end up somewhere else that is a bit more...wet. :p
I've already put a huge rear sprocket on Daisy Chain and she also has a two brothers pipe which is tuned by a Power Commander. Even with that, I was left aching for more power. It'll be just fine. This build is being done by professionals and not back yard broke-anics.
minitstop Shuddup, MS! ... I know what's good for you !! (LoL!) ...
Yeah ... I knew it was injected ... Maybe you should re-program the
EFI with the RideA-MAP. ... Feel the POW-AH of that big-bore rumble between your thighs ... Oh, yeah.
.... One does wonder why you don't just go with a WR450F, though.
minitstop
Hey Minnitwok, so that was pretty cool huh? Seeing your bike on a dyno? That's not something everybody gets to see!
I did not know that about K&N filters though. I always run foam filters on the dirt bikes, but I've always run K&N's on the street bikes. They don't get the same exposure of course, but I'm still going to do a little checking. Might have to change things up on my beloved FJR.
Anyhow, definitely looking forward to developments on DC 2.0! That was fun seeing her on the dyno. Very good start to the series.
phrankus2009 lol! Dude, If i could get a RideAMAP fuel map i'd crap my pantalones! I originally wanted to get a 2012+ CRF450X however, this bike was came up and it was an absolute steal. 2400 bucks! Then MrD offered to build her up so ya know...Let's do it!
gncc1race Heck yes! I was super happy to see this. Not so happy about the filter. I didn't even think to change it. It does not seem like this bike was ridden off road much. Well, from it's previous owner, anyway.
I think it would be a lot cheaper to just to buy a more powerful bike, in fact I know it would be, but what ever you wanna do, it's your money.
How much can your feet put out on that dyno
Note to self: Next performance mod CLEAN AIR FILTER.
Ha ha!!! Worth 2 horsepower!!!
So which filter did they recommend? UNI?
They didn't actually recommend a specific brand, just to stay with an oiled foam filter rather than a K&N. Pretty interesting aye?
Run bike with dirty filter. Measure HP/Torque. Remove air filter, run bike again. Measure HP/Torque. Gain HP/Torque and give high fives all around. I would steer clear of this dyno shop. Removing the air filter does not represent real tuning.
I like how the guy said exactly what I always say.. that any engine can make more power with cams, bore & stroke, and a little porting.
Does anyone make a cold air kit type intake for those? Instead of the stock plastic tube leading from the air box have a nice smooth aluminum tube with a cone filter or even a filter right on the throttle body? (which wouldn't be good with water but would be good any other time) With that much air going in he might have to step up to larger injectors too.
Dave has tried several different combinations of air filters, intakes, and even custom ones. He's dyno tested them, and knows exactly how much to cut off of which model to add one horsepower, etc. The problem with cone paper filters is that they don't flow well, and they don't keep the dirt out of the motor. They're much better suited for the street, and a cold air intake doesn't do anything positive on these kinds of bikes, the intake is so short anyway that there's literally 2 inches from the filter to the carb or throttle body anyway. He hasn't found that even removing the airbox completely makes any positive change, so I guess it's not a point of flow restriction. Good thinking though.
So you're telling me the WR is gooderer than my CRF ;-) hehehe! I would prefer almost not to know how little power Ursula has.... Wendy the sewing machine still manages to run loops around R6/CBR/Ninjas in the city, technique over power every time!
Man dude, I'm not sure how much the CRF puts down....???? Either way, she's an excellent bike too!!!
27 HP
This vedeo makes me wonder how much HP ma bike has. Mmmmm....
Which bike do you have??
2013 husqvarna te449 all stock.
Guessing low 40's? It used to be that a fast 450 was about 38-39 HP, but I think all are over 40 now.