Honda Grom Engine Swap: Twice the Engine for Twice the Price - CBR 250cc / 300cc How-To
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- Опубликовано: 2 июн 2024
- The Honda Grom is fun, but it can be made more fun with one of the easiest engine swaps you can do. I take one Grom, one CBR250R, some reasonably priced parts, and with only basic hand tools and a weekend, make the Grom a way better motorcycle.
Most of this is super easy and you don’t need to fabricate anything.
There are a handful of videos on this swap, but a lot of them are long-winded tear-downs lacking detailed information, followed by wheelies. If you’d rather do wheelies than watch wheelies, then watch this video and do it yourself!
Mount kit: www.steadygarage.com/store/ch...
Injector Elbow: www.steadygarage.com/store/ch...
Wiring info: drive.google.com/file/d/1_sQm...
Dash wiring info: docs.google.com/spreadsheets/...
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It's 5 AM, I've never owned a motorcycle.
... Here I am.
You want a 2015 or younger street triple 675 r. It's awesome it has abs from that point, brakes can still make you flip. 5l/100km. 0-100 3.8seconds. Only use one finger for braking. 4500-6500euro 10-20000km used.
Omds it was exactly 5 when I read this
Motorycles is the dark side. But my life would suck without 2 wheels. Go take a safety riding course then buy whatever bike you want. Recommend a Yamaha R3 or another 300... Biggest I'd get as a noob would be a GSXR600. I started on a Ninja 650 then got 3 GSXR600, R3. Grom, Hypermotard 1100... Now on a Z1000. But want a CBGrom300RR!!!
Get one there mint
4:43am. I want a grom but the only way I wanna get one now is to do this. So dope
Bigger engine and 250 are not often said together
Not in four strokes anyway
grom's original engine is 125cc so this guy have 2 times cc than the original, I'm cool with that
Armorpiercer oh know it’s a massive improvement over the air cooled 125 cc engine stolen out of a child’s dirt bike don’t get me wrong, but like 250 cc is still a pretty small engine
@@clancyslater9245 Yeah but the grom does not weigh much.
''I need a bigger engine than this 250''
Swap the CBR with Grom engine 👍
RWF _No now that would be fun 😂
YESSSS
there is a factory production cbr125 for this :)
😆next video Harley 750 in grom😂😂😂
Just buy the cbr125
The diode prevents people from hot-wiring your ignition live. The ECU will only accept the (time to perform) signal when it sees the resistance of that diode. Remember this if you ever replace the keys and locks on bikes.
12:20 “you can’t ride without a shift lever” my vice grips say otherwise
ghetto bikelife Uh, that’d be “vise grips,” hombre, unless you’re referring to being seized by a drug habit....
ToddtheExploder lmao that actually sorta makes sense in that sentence
Hhhah I'm fukin dead
thats still a shift lever.......
ShadowOfDeath24 indeed
My country: "Wow, a power increase from 9HP to 12HP, awesome! I can really feel the difference!"
This guy: "This bike needs a little power up. Maybe 9HP to 25HP is enough."
lol I just picked up a 750cc, needs carbs & a rectifier and it should work perfectly. paid $120
I think that's the point of the joke
"JuSt BuY a 250 aNd RiDe It InStEaD"
You guys are really missing the point of this
Have you ever done anything fun ? Doesn't sound like it.
Content?
The grom is a much lighter bike, that is a good reason to put the 250 engine in it
But take all the grom badges and icons and replace all icons and badges on the 250 with all grom icons and badges and see if anything else from grom can be used to turn a 250 to look like a grom and then you can go picking on grom geeks with shock and awh with a monster grom or would be an insta gram
@@donniebaker5984 do you know what a grom and a 250r look lije respectively? There is nothing alike about those bikes except the basic motormounts and the badge
"robot sharting" that killed me. Props on that one
It was perfect
at first i was like : did i hear that right !? then, I was like : yeah, he's right lol
You have to be the first mechanic who is a human being. All the others say they are mechanics but you never see the mistakes and this what makes You a true mechanic. I Thank You for this and You also learn from Your mistakes and pass it on to everybody else
mistakes on RUclips? lol they make them left & right
As a Kawasaki Z125 Pro owner, I totally agree it needs a 200-250cc engine for more FUN!
Ayyy it's sighbored ! Love the videos , it's always satisfying watching Malaysian videos as a Malaysian myself
@@hafiz582 Thanks for the support!
instaBlaster.
As a '00 ZX-12R owner I totally agree...😅
It needs more acceleration, gearing, and top-end just for safety on our faster roads. It's not even legal on many highways.
A 250cc should be offered for the USA, IMO.
RUclips algorithms suggested me this, and after watching the video i just subscribed your channel.
Muhammad Kamran Rasheed sorcery!
same
Love your presentation, laid back yet very informative and easy to understand what you're doing
Honda really just needs to keep the grom the exact same profile but fiture out how to make it as fast as possible.
Once of the best instructional videos I've seen on youtube in a long time. Well done, I've subbed.
This is the first video I've ever seen of yours and I instantly loved your videos. Keep it up man you gained a subscriber 😁
I wish Honda would let us choose an upgraded 250/300 engine from the factory as an optional upgrade that would make them sell a lot more units imo. I’m going to get one but I will be engine swapping it because highway speeds at a normal rpm is a must for me.
I did this project last winter. Best decision ever
Loved that! When I was 16, I blew up my FS1E and bought a second hand YB100 motor and stuck that in, I was missing an engine bolt so I just stuck a big old paintbrush through it - the engine never fell out :-) I think I went from 4.8hp to 8.2!!!
Dude, since you replaced it, is the grom engine available for selling? Im looking for one to put it on my Honda 50cc
Since you're replacing your 50cc, can I have it for my bicycle.
since youre replacing your bicycle, can i have it for my shoes ?
@@DarkIzo since you're replacing your shoes, can I have them for my socks?
@@wowdcshow5375 lmfao
rwwbeast1 where does it go from here?🤔
Great video my dude. You helped a lot of people right here. In my city the Groms come by in a pack of about 100
Great video! Almost step by step, a lot more insight than others. Enjoyed the humor and seriousness. Will be watching this many more times when I get ready to swap my grom
Did you swap it out? or did you just leave it stovk
@@raydenbartley still on the lookout for a suitable engine to swap into mine
Enjoyed the video and your sense of humor. Keep the projects coming.
Amazing description of everything done! video was great to watch!
Please do a follow up video with the tune up completed, a nice exhaust, and running premium/race fuel!.
For fuel Air ratio adjustment, I used a resistor in between the O2 exhaust sensor and the unit.
Though the ECU reads the signal digitally, it still enriches the mixture to the point where 1kOhms resistor gets black exhaust soot.
But you can feel what setting works best. It's a bit of give and take. Too high of a resistor (I tried with a 1kOhms pot) and the top end suffers, but the bottom will ride great. Too low, and the bottom end suffers.
So a mixture (I think I used a 250Ohms resistor, but don't quote me on that).
Just do it the right way and have the ECU retuned.
@@Dreamboat988 actually the right way to do it now is with an aracer ecu. I do not know anyone with just a "retuned ecu" for their swapped grom. I have a 250 swapped sf.
@@jaycolor994 Cool story dude.
@@jaycolor994How hard is the aracer to set up?
Nicely done. You're spot on about it being more fun to ride a slow bike fast than a fast bike slow but it's even funner to ride a tiny bike fast with a more powerful engine. I've been wanting to put a WR250 engine & transmission in a TW200.
A TW250 would be sick.
You could do this half-drunk (pauses), which is pretty much how I did it.
Too funny.
Thanks for the video. Good one.
Man...I wish you took more video of the after build and show us it look. But boy oh boy that was awesome to watch. Thank you!🙏
love the channel! I really hope it grows! also can't get enough of the humour. fantastic job. 👍👍
How does this dude not have waaayyy more views?
If I had the money, I'd have been all over this.. I was already looking at bore kits for the Grom but ended up with a rebel250 instead. Totally different bike but dead simple, faster and pretty much perfect for the daily driver I was looking for
Yeah, until you're bored as hell and want a faster bike in a month. That's what happened to me. At least with the grom, you can do some hooligan fun with it.
@@hamiltoes fun isn't always the driving factor in why people buy bikes tho,rebel 250 is bare bones, reliable and fast enough to keep you safe as long as you stay off the freeway
@@hamiltoes eh.. three years with it and I still dig the rebel.. I also take it on the highway every day. It’ll do 75-80. I bought it needing a commuter and it’s great for that. Always have fun on it too. I own larger bikes, but still usually ride the rebel. It’s fun for me, gets great mileage, I can park it anywhere and it’s super easy to work on.
I have zero interest in doing hooligan shit. Not my thing.
@@himlaz_2398 I take the rebel on the highways regularly. It’ll do 75-80 just fine. Sure I avoid the sections where everyone is going 90 but generally, I don’t have to plan on avoiding any roads.
@@jseden my first motorcycle was a 1985 Honda Rebel. It was a spare bike my uncle had restored over winter and gifted to me as a practical solution for getting around while I was there. It was small, light weight and was a blast ride to take up the Sun-Road in Glacier National Park.
Great job! I own a 2011 250R and that engine is purrrrrrfect for these builds!
I had a 250 Kawasaki Samurai back in the 70's; thought THAT was complicated compared with it's rotary disc valves compared to the 250 Villiers engined James that I previously rode in the 60's ! This 250 make those things look like a T-model Ford in comparison; at least petrol gravity feed to a simple carburettor and a VERY basic electrical system made them easy for a teenage kid to work on then,................ I'm still modifying and riding motorcycles in my 70's ! Thank you for an entertaining channel !
I love how Matt always speaks as if we're going to do the stupidly strange, and complicated things he does.
Me: Buys CBR donor, just keeps it and sells Grom 🤣
Plus your insurance still covers your cbr when you have an accident unlike the grom that has been modified.
BRiiTASH Gaming until they inspect the wreckage...
@@Agavegaming its a grom though. If you can afford to 250 swap it you can afford the insurance
i'd have done the same lol
I like your videos. You're knowledgeable and you share in such a way that the information is usable!
Very detailed and clear video. I dont own a grom, but sort of wish I did after watching this video. I also love half baked questionable automotive ideas. You earned yourself a new sub my man.
Came here from a Jalop article, and this is super neat. I love the concept of Groms but I agree that it needs just a bit more power. This could be a project I see myself doing in the future.
That was interesting, & fun. I guess for the price of a Ducati Monster the job is nearly perfect and the chances of surviving are so much better than the Monster that it's easily the better choice. Plus you dont spend near as much on fuel. Nice one!
Sounds like a robot sharting is the absolute best description for that sound!
Watched the whole video thinking you were some huge car channel and only 18k subs! What bro, keep this up subbed with notifications on🤘
You have a pretty sarcastic, snarky sense of humor for someone living in California. Did you grow up in NJ? Lol
We Californians tend to do sarcastic and snarky rather well I find.
Beach dwelling Californians are sarcastic, snarky and laid back, all at the same time.
This is me... hey, I have a perfectly good cb300f, just need a grom body
Bruh I’m from Fresno and moved to Newark NJ y’all are so similar just a little less talkative
Great humor mate , just like us British , nothing worse that boring idiot's 🤣
Nice vid. bro! first class job on that Grom.
I like how you give all the info I need to buy the parts like I'd ever do this.
I mean that. I like that.
Nice! Looks like we enjoy some of the same driving locations👍
Angry leaf blower! 😂🤪🤣 oh lord that's priceless!
"You could do this half drunk"
That's my everyday.
Do you need help?
@@Peterpiperspickledpeppers I think he is gone
The panigale worked because they actually worked on the running gear and swingarm.
Theres a 700 fzo7 grom but that had a LOT of mods to the swingarm and running gear.
You are one sharp individual. That looks very nice.
"...it'll sound like a robot sharting"
🤣🤣🤣
Sounded like a rapid fire pop gun!
Cool swap, but I feel like I'm watching how to spend liter bike money on a moped lol
That is BASICALLY what this thing actually sounds comparable to. 😁
Hi there from Australia. Thoroughly enjoyed your build, skills, style and video. Have suscribed.
I don’t have a grom. Don’t have a 250. But I’m still here stoked on this engine swap. 😂😂
LS SWAP
I'd donate to that GoFundMe lol.
2jz swap
It's a Honda, it needs a K24. It will fit the stock motor mounts. (runs away)
Quick question, Since the cbr engine now sits at a weird angle will you have any problems with the oil pick up?
Yes. Yes he will.
@@SchoolforHackers There are several build threads and reports of guys putting thousands of miles on after a 300 swap, with no damage to the engine.
@@jasonb6570 Okay, if it works it works. My observations are from seeing three different guys kill the motors riding extended wheelies on pit bikes. If this one works out, cool. But I’d be feeling spooky.
Awesome stuff. Your channel is going to definitely grow and then some!
Enjoyed that 👍Liked the funny ‘gentle persuasion and hammer stuff 😂
Love to see that lil muscle grom. Also i like the way you explain the whole process to the audience, perhaps it will be more easier to understand if you speak lil bit slowly. Imho, but overall it's good video buddy👍🏻
You can always just slow down the playback of the video
Nah people can just pay attention instead of expecting other people to cater to their habbits
The best way to lower the cost of a project is to save the Old Parts ( drive Chain ) And sell them later.
Why damage and Waste things ?
That you can recoup some cash from .....
Work smart lower costs .
Excellent tip!
Try and sell a used chain on craigslist and let me know how many years it takes lol
@@darklorddylan1316
Facebook marketplace or Ebay would be better for that.
Q is legit. Don't trust the media. It's still a used chain. And the factory chain on bikes requires drilling of rivets so it's pretty much the same issue
Probably the cleanest grom swap
I now own 2018 R6 and 2019 MT07, but god I missed my cbr 300, i had so much fun and memories on the CBR,.
What is the top speed?
When I was a teenager a few friends and I put a Yamaha 650 engine on a go cart frame....
After a few steps forward and a few steps back we had a ignorant amount of speed in a flimsy frame less than 3 inches from the asphalt.
It was fast, way too fast.
Yes we all maxed the thing out on our neighborhood streets, and no one got hurt...
I think we lost interest in it when we all got real cars or motorcycles.
Im guessing the 650 was from a xj650
benson420710 no sir I believe it was an SX 650 1979 or 80
So many ask, “why not just ride the CBR or get a bigger bike ?” These are folks who never stretch their wings on ‘Engineering Exercises’. Guess what folks, this endeavor is Exactly what the aftermarket was founded upon.
Great Vid ! Great Humor ! Informative …. especially on the matter of Robot Sharting 😆
Looks like your ride was my old stomping grounds. Grew up in PV (Mom still lives there).
Im 16 and I have the best idea you guys have ever heard
"a little more power"
>3x power increase
i mean, its from 9 to 30, but still
California emissions laws suck. Glad you found a way around them.
I really enjoyed your build video mate
Here late but cool video . You make it seem so easy. Over my head but like seeing the innovation
instead of thinking of it as an engine swap, it's more like slapping the internals of another bike into Grom platform/external parts
Duh?
Needs a 450 mx swap, period...
Realtalk
Enlightened Idiot it’s been done a few times
@@shredder_mang3211 I would love it
Exactly , because if there is a mount kit for a 250 on the market , it's not a sick enough swap anymore.
Enlightened Idiot would be way too much power
I did the 420 accelerator kit on my r6 with many many mods. 420 chain is plenty strong and will give you more torc an power to the ground
Great video. Don’t own a grom, but I watched it anyway. Cheers.
Now, put the grom engine in the 250 frame. haha
Grom engine in a cbr 1000..... Reverse sleeper!
Honda grom with engine Ducati? thats insane HAHAHA
DevinIyana it burned to a crisp. There are pic online of the resulting mess.
I like that cone filter protruding out of the side fairing lol.
Love your work, "you could do it half drunk" laughed my arse off, so good
Why not just swap the whole front end of the CBR ? Instead of worrying about controls, plugs, gauges etc... Plus get a brake and suspension upgrade presumably.
I would assume the forks are substantially longer and the tires are bigger. It wouldn't work I don't think.
the question is, wouldn't it be easyer to fix the CBR and ride that?
Of course it would be easier. Where's the fun in that? With that mindset, why would anyone ever swap a more powerful engine into ANY vehicle?
Great job SuperFastMatt!!!
damn, why cant there be more to binge watch, been here since like 10k subs, great job, cheers
i would just ride the 250 as it is :D
Loll 250 beginner rider here, I love the machine🏍
Hahahahaha it sounds like it’s under water lol
"Do you like your automotive ideas half-baked and questionably good?"
-Why, yes. Yes I do. You got yerself a new subscriber!
Grom fuel pump supported my cb400 motor no problem under any load and that’s a inline 4 with 53hp.
👌
I watched the whole video and I ended up depressed because I don't have money for a cbr250😒
Try scoring one at an auto auction?
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Well done!
Great video! Great swap!
"It will sound like a robot sharting." That's it, I'm subscribing.
I’m so sorry you live in California.😞
and I'm sorry you don't
LOL! That's awesome! I'd never even heard of a Grom before. I'm not a real fan of four stroke singles, but they're OK so long as they have a decent muffler. My mind was thinking two stroke 350 twin out of a Yamaha Banshee, but that may be a wee bit of overkill lol.
Love your videos. We need something like this for the Honda Trail CT125. Thanks!
Project time! Thanks man.
Just found the channel, good to see a similar sense of humor :)
You gained a sub my dude. This is awesome.
I now know what a robot shart sounds like. Thank you, Matt.
Very good job , Mite ....👍👍👍👍👍👍 ............Job well done , Boy .
From what I understand the diode is for the hiss system (honda integrated safety system) the diode converts 12v from the battery to 9v to power your ecu.
You can use a small fabric mesh over the intake or pantyhose I think is a common thing for sandy environments. Otherwise you can make a metal mesh dome and cover that as well to keep it from getting sucked in while still providing good airflow.
What a great informative video! Great job!
Awesome video, do more motorcycle stuff!