Honda Grom Top End Build | Honda Grom Big Bore Kit Installation | Partzilla.com
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- เผยแพร่เมื่อ 17 ต.ค. 2019
- Get your Honda Grom 170cc big bore kit, gaskets, tools and more here: bit.ly/Grom-Koso-big-bore-inst...
We’re adding horsepower to our Honda Grom! In this video from Partzilla.com, John will install a Koso Honda Grom top end kit on a 2018 Honda Grom. This process will start by getting the plastics off and then tearing the engine down to the cylinder.
Once we get the engine torn down, we’ll show you how to install a big bore kit on a Grom. John will take you through the process of adjusting the ring gaps and prepping the piston before installing it. Then, we’ll show you how to install the cylinder and follow it up with the head installation on the Grom. Finally, John will explain how to adjust the valves on the Grom.
See the Honda Grom cylinder diagram: www.partzilla.com/catalog/hon...
See the Grom cam chain tensioner diagram: www.partzilla.com/catalog/hon...
VIDEO HIGHLIGHTS:
Removing the seat and plastics - 1:20
Draining the oil - 1:40
Removing the airbox - 2:10
Removing the exhaust - 2:30
Disconnecting the throttle - 2:50
Disconnecting the fuel injection - 3:10
Finding top dead center - 3:40
Removing the cylinder head - 4:00
Removing the cylinder - 6:30
Removing the piston - 7:00
Installing the cam chain tensioner - 8:25
Replacing the flywheel - 10:20
Replacing the crankcase cover - 11:00
Checking ring gaps - 12:20
Filing the rings - 15:10
Installing the rings - 18:30
Installing the piston - 23:30
Installing the head - 26:40
Setting the timing - 28:10
Adjusting the valves - 29:30
Buy Honda Grom parts here: www.partzilla.com/catalog/hon...
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In the video we’re working with a 2018 Honda Grom ABS, but you may have similar steps for your Honda Grom. If you’re not sure whether these steps apply to your machine, leave a comment and we’ll get back to you. - ยานยนต์และพาหนะ
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Ive had my Koso 170cc 4V for 6 months and put over 1000 miles on it so far. Engine dyno’d at 26whp at 11,400 rpms with the Power Vision 3 Standalone ECU. Runs absolutely perfect, does over 90mph w/gps.
power vision is a piggy back....
phat56pat Piggybacks are external devices that tie into the engine computers wiring, and essentially trick it into making more power. The Power Vision does not do this my son.
john martin power vision flashes stock Ecu is not a stand alone like a ARACER. The factory grom ecu is still on the bike with the power vision, there for not standalone and is a piggy back reflash. Not as reliable as a ARacer but more reliable then a power commander 5
john martin directly from the website “A Dynojet PV3 enables fuel tuning straight from your bike's diagnostic connector. You don't need to tear down your bike to access throttle body connections or tap into switched lines, or deal with sending off your ECU. The PV3 simply plugs in allowing you to view system metrics and flash your ECU “
phat56pat You can make all the same changes like ARacer, the changes are permanent to the ecu unless you make more changes. It is not a piggyback system like the power commander 5.
beginner : use big bore kits
pro : bring the bike to tuner, request 150cc up to 250cc with 68mm piston and 70mm stroke crankshaft, in southeast asia, we do some extreme modification like customing block,head, crankshaft, gear ratio, and clutch house.
sorry for bad english
Here we are, almost 6k miles and she went boom boom in 95F
Its nice to see someone doing a first class job.
well i wont question his knowledge.. but when i was tinkering in the old days on my honda MT.. i fitted the piston first in the cilinder..(halfway) and then mount it.. wayyy easier.
Yes the work is great but facts are a bit Made up. Honing marks are there so there is always an oil film between the rings and cylinder wall, so That the rings physically never touch the Wall. And just using a Thin layer of oil when instaling so That the rings ”cut in” doesnt make any sense. After the first rotation of the engine, the Walls should already be Coated by the engine oil. And he should be spinning it several times when installing a new head because you want the oil to circulate up to the valvetrain. The rings dont really cut in, they seat. It kind of sounds like hes saying “That is the whole break in process”, probably not. But the break in process is going to last for several hours of the engine running. People tend to ignore This, and This Will cause the engines life to be severely shortened
I know man this guy does it right.
hahaha literally this guy LOVES motorcycles and I support him lmao
@@josiahgarrison647 Gl in life man, its better to learn to accept That you are wrong, than constantly make up excuses or lie to shift the blame. Take some responsibility, in real life. Its better to be wrong and take responsibility rather than being wrong and coming up with excuses.
Well done. I could watch him do this all day.
best mechanic videos on the tube! keep up the good work guys!
This is why i would pay a professional like this guy to put a big bore kit on my grom, there are just too many things that can go wrong otherwise resulting in catastrophic failure lol, great video 👍.
This is the same process for all engines, try it on a 212 predator minibike engine first, that's how i learned to do ring gap and orient them and I honed the cylinder myself too with a hone and drill but you can just pay for that to be done. But this is all straightforward, I did every last thing he did to put mine together and those engines are only like 100$ used or less it's worth the education.. because now I see this grom video and it looks easy, I know I can do it. You should own feeler gauges anyways for valve lash, which you can also learn on the 212
@@Partnerthedog great advice, I'm going to go for it, you can't l learn how to do it unless you get in there and do it , thanks 👍🏆.
@@congerscott6064 yeah! Those 212 minibikes are actually really fun with the governor removed and some performance parts added they are a blast to ride even after owning 2 stroke dirtbikes I loved mine. I put a billett flywheel, billett rod, high comp piston and no cam it was fast!! I bought the pieces on Craigslist for cheaper than msrp though
Yup
Top of the line videos. No bullshit, no cuts with music. John is the man!
Hell yeah, John is upgrading the bike!
I love these videos just don't stop making these.
Such a great and informative video. Nice job!
Sir ! You are a craftsman par excellence ! Lots of regards. Trinidad & Tobago.
Hi and thanks fun to watch you work and too see all the cool stuff available for the build
YESSS HE'S BACK
This is one of heck of a professional channel
Best build vid I've seen yet!
I don't even have a grom but this video it's pretty entertaining by itself, that bike sure must have some more life after that mod
Surgical precision. Excellent.
I would love to see what you guys can do to a TW200. It's also a fun little bike that could use a little more power. Especially on the trails
Always enjoy these video type.
Very good assembly "tips", thanks!
Excellent video. Good sound, lighting and the content relevant it top notch.
Much appreciated!
wow what a detailled explanation, awesome
clean and ideal work place, great bike!
Making it look easy. Great video.
So clean n detail.. goodjob👍👍
Wonderful. Very therapeutic 😀
Nice built never really watch a full video but this one got me hooked lol love groms even tho I don’t got one lmao
You're like a surgeon, it is admirable and satisfying to see someone work so clean, calm, organized and and with so much detail, my way of working engines. You can use your voice and make an audio version of this video, to rest and sleep on it. Forget about sleeping sounds or sutting voices, you are it brother. I was planning on getting the new Honda Trail CT125, but I would upgrade that engine to 142cc, now that should be your next video, a 125cc upgraded to 142cc or so. Let me ask you how big of effect does this upgrade have on gas consumption? You stay safe brother God bless you.
Finally, John!
I see with one of this models with a 300cc engine it was insane.
Great job on the video👍👍👍
Would Really like to see 250 cc's full-blown race engine with all the goodies... great video thanks for posting
Terrific illustration.
fantastic video! thank you sir!
Registered already through g bear TH-cam channel. Thanks for the video!
Great! G Bear is awesome! Thanks for checking it out!
Nice job....This is why i love a 2 stroke :)
Dreadog it’s 4
Earned a sub
For this
AMAZING VIDEO
Excellent tutorial sir, very informative
Thank you, sir!
Man this guy is a great mechanic. Nice work man
Thanks for this video, big help for me😊😊😊
Wow, oldman .this call master!
you have some solid knuckle hair my dude!
Awesome work!
Dude stellar video
Love to watch the vid.nice work.lots of info..wish to have Honda G..more power Sir...
Honda trail 125. Probably will be a hit video for ur channel.
Awesome job Sir, thankyou
Nice clean job
Please do the oil cooler install..
That will make that engine run longer without overheat due to the higher bore and compression.
But anyway, just want to see how you install it.😊
Can you please do a write up on how to change the fuel cap, ignition and under-seat lock?
Thank you!
John is Back! 👍
John never left!
Hi...I'm a huge fan of partzilla...
Hope soon you make a video of Honda cb150r Street fire front fork modification from telescopic fork to upsidedown fork....
Doing a great job of explaining how its done, have been doing some research on what it entails to do this and this has to be was of the best videos explaining it all.
what a photographic memory ..all those parts..
Would love to see this on a Honda trail 125!
This guy is such a G
Nice work.
Very precise jobs here.
es usted un profecional de calidad yo es que tengo una moto honda msx 125 y ver esos kit de mejoras es un placer verlo me gustaria que precios tienen les escrivo des las palmas de gran canaria saludos
This is like watching the bob ross of mechanical
I'd like to see a proper job done on a Honda CB 400 four, a seventies retro racer...cool.
Great video, cheers.
easy to do when you have the right tools.
It looks like a brand new Grom! I like the black painted engine, It's a shame the big-bore kit also does not come painted black. Enjoyed the engine rebuild!
2018 Road Glide Special with a 128c.i. kit !
Thanks for your imformation.You just did an amazing job. ❤
Can you show a walkaround, sound and dyno for this?
very very good . thanks
Great videos
Bore size is 60.98 Where does the 25.4 come from . The rest is understood , Great video though Thanks for the info
Good job
Would love to see a Honda Super Cub 125 beefed up.
I kept the 2v head with my koso 170cc kit. Also I gapped the rings as well but they were all in specification. Weird.
Is there a top end or big bore install for the z125 seems to be real popular lately
If I am just replacing the head for another oem one would I follow the same steps? Just replace one with the other and adjust the valves
I have xrm 125 motard ,nice
Can you do honda CBR 150 2019 upgrade bore x head to make higher power?
Will you do this again on the 3rd Gen, 2022 Honda Grom?! I would gladly load mine in Los Angeles 😉
Nice video. I would like to see the Honda Monkey done! I just bought one and will be looking for a way to trick it out!!!
@@grantsmittkamp1757 I didn't even look for the Grom.
Nice sir.
im lost.. but i watch it any way🤣🤣
The best.
Awesome video. Im using a aracer mini 5 with af1 what would be the fuel base?
Yo quisiera hacer todo eso a mi moto pero acá en Guatemala saber si lo hacen y lo hacen saber a qué precio … se ve que el señor es muy un profesional
Efi for the drz 400 is what I would like to know about or see happening
Would like to see a long term review!
I’m really interested in a big bore kit for my grom🤘😁
Enjoy the bike life and have a great weekend
AeroR Ive got 6 months on mine, dyno’d @26whp. Runs perfectly, does 90+ mph w/gps.
Just get a zongshen 190cc engine. Its 5 speed and it makes 20hp with a carburetor.
robertas grigas Did it dyno at 20whp or just claimed whp?
@@john-martin 26 mph with just the 170cc kit
aeroR ... if you install bbk, change to the light weight crank, Kitaco 5 speed, 4 valve head, bigger throttle body and flange and intake. Also install an oil cooler and catch can. Then you must change to a aracer 5 mini with2 stage and auto-tuner with O2 bung with piggy back for atf, also change to brembo 4 piston or 2 piston your choice. Since you going alot faster you Midas we'll have better brake system..
And change all the given parts colder plug, better wires, gear and sprockets, better brake lines, and find a good tuner who can Dyno tune you for 300 bucks. That's what I would do. Hence I'm just changing to a hi comp kitaco piston and kitaco cam with a dhm reflash ECU. Also cheaper for now.
Awesome
I have a 2022 from does that go on just fine no having to build new pieces for it
Does it work?
I would like to have seen the engine started and end result reviewed. how does it run?
Verry nice
where can i find the part 2 for test run 😊
Lots of great info, but it totally sounded like the piston clipped the sparkplug when you tried to roll it over at the end!
He know every nut
I like your job nice
I can't believe you just let the rod slam into the bottom end like that when you pulled the cylinder off.
Maybe I can do this upgrade on my Honda wave 125i because their used the same engine
Can you do a performance build on a Honda rebel 300.
Will this kit fit on the new ct125 Trail that's coming out in 2021.? I am 225 lb and I think the extra horsepower would be a big bonus for a on off road trail bike
Honda grom + this engine kit= more money involved than buying a brand new CBR300R w. ABS, but not as much fun! hahahaha!
28:39 let it get to your head pops it’s your birth right as gear head 🤟🏻