Thanks for the guide, I went with the stage 3 kit for my SF Grom 2 months ago (going 500+ miles). Some notes for others, don't forget the dowels, I missed one and had to undo some of the work. I put it back together, pulled the old spark plug and saw I crushed the old spark plug in the cylinder when I was finding the timing marks, so I had to go in again and clean out those porcelain fragments. Thankfully, just a tiny ding on the piston. The stock airbox can make the intake valve adjustment a bit more difficult to access. After that, the kit is definitely what I needed to get over the hills in my area, now I just need to loose weight for the interstates. I also used this as a reference for my CRF230M piston upgrade. EDIT: 6 months later, I checked my valve clearance a 3rd time since I thought my own math was right when I though 0.75mm was the same as 0.003 in, when it was actually 0.076mm. 😑 I was thinking the whole time the slight ticking noise from the valve clearance was normal. I got a new set of feeler gauges that had both mm and in. labeled, made a huge difference once I set the PROPER valve clearance and I know now that I have missed out on some power for too long.
@UnknownOverLand2 жыл бұрын
This is awesome information and reminders, thank you for sharing!
@JeffMason-o1o7 ай бұрын
The instructions from DHM say the top ring gap should be .007-.008, and the bottom ring should be .008-.009. I understand your logic behind the Wiseco recommendations and measuring the bore, but which would be the better route? Using the DHM provided recommendation, or measuring and using the chart?
@UnknownOverLand7 ай бұрын
Generally measuring your cylinder is the better option because there may be slight variances in how your piston was manufactured or worked in or anything. Because of how tough these engines are (and how good DHM is) you might find things to be pretty close to what they say.
@JeffMason-o1o7 ай бұрын
Thanks tor the prompt response!! I really appreciated your video!
@Zerffed7 ай бұрын
Did you have to hone out the cylinder? I’ve got a grom I want to run this kit on but some people said I should hone the cylinder out cause the rings might not seat properly, mine only has 500 miles on it though.
@UnknownOverLand7 ай бұрын
To do a cylinder properly you really should hone it it out and make sure everything has a chance to properly run in together. I did not, mostly because honda engines have a tendency to live through anything and this bike was more of my toy bike. If you look into the cylinder and see a lot of carbon or scoring you'll have to decide.
@PizzaCologne33 жыл бұрын
Thanks for the install video, current got oil flowing into the headers, I think I broke something
@UnknownOverLand3 жыл бұрын
You may want to check the gaskets at least to make sure everything is seating well. Otherwise, look for cracks.
@PizzaCologne33 жыл бұрын
@@UnknownOverLand video was very helpful, took it apart yesterday under 3 hrs "first time" and found that the piston cracked on one edge and blew the rings allowing oil to flow through and gasket seems old, so new ones on the way, can't wait for the fresh install.
@auomauom4 жыл бұрын
Thanks for the video Unknown. Did you have to set the valve lash after the install? Looking to do this soon!
@UnknownOverLand4 жыл бұрын
I did go back in and recheck them just in case. They shouldn’t really move much (especially since the cam didn’t get pulled), but didn’t hurt to check. Added bonus, they’re a lot easier to check when the head is off the bike.
@suupaltti Жыл бұрын
It seems that you put dowel pins back on different pattern. Was it purpose?
@UnknownOverLand Жыл бұрын
I don't believe so, it's likely just editing where in between shots I pulled off dowels I forgot in the first place and then put them all back in without thinking.
@darealfrog121 күн бұрын
Hello Is it correct that there is no oil channel on the exhaust valve?
@UnknownOverLand6 күн бұрын
I don't really have a way to check anymore, but I know there's oil down in that area.
@AnonymousYoutuber696 ай бұрын
What octane fuel do you use for this piston?
@UnknownOverLand6 ай бұрын
Along with my tune I ran whatever the highest octane was available around me. I had heard some also like to use some octane boost as they had seen a slight knock from the timing.
@BubbaB433 жыл бұрын
Your head dowels were staggered when you initially disassembled the top end, is there a reason why you put them both on the timing chain side during reassembly?
@UnknownOverLand3 жыл бұрын
There were some in all of the pins, but some stayed in while others came off with the head. I suspect in between steps I probably took them all off and didn’t think about where they go (or at least show some consistency for the video).
@RiggerbeeOffRoad4 жыл бұрын
Hi. I followed this video to support me fitted the same piston to my grom. I had a question for you about the sparkplug. I received a sparkplug with a spacer taped to the box, it also had a spacer inside the box. Did you use 2 spacers or just 1 spacer for the sparkplug?
@UnknownOverLand4 жыл бұрын
I only used one spacer on my spark plug (in only received one). I’d be surprised if you needed them both.
@Adv.Wannabe3 жыл бұрын
What were your final setting on your Aracer? I’m running the mini5 with af1. Do you have base settings on everything?
@UnknownOverLand3 жыл бұрын
It’s mostly base settings, making sure that everything idles and warms up correct then AFR sits around 13. Then I turn on autotuning and let the system fine tune itself. I have played with the timing a little, but really the most important is putting 93 or higher octane in the bike and it just runs.
@budlight1432 жыл бұрын
just finding this video, thank you, what sockets are those? I like how they are numbered.
@UnknownOverLand2 жыл бұрын
Glad the video was helpful. I’m actually not sure which set that is specifically, I’d had it for quite a while.
@Ultermategamerz4 жыл бұрын
I'm looking at a similar setup to you, just wondering did you have to adjust your ignition timing on your Aracer for knock prevention? And what octane did you end up running? Excellent video as well! Cheers.
@UnknownOverLand4 жыл бұрын
Thank you so much. Depending on what's available, running 91 octane or higher (or at least octane boost in your fuel) will be needed for most of the knock prevention. If you look for the comments on the video from DH he also mentioned pulling some of the ignition timing in the Aracer if there's still some knocking (about -2 to -4 in many cases). Just keep an eye on the color of the spark plug.
@chuckley54494 Жыл бұрын
So did u gap ur oil scraper rings?
@UnknownOverLand Жыл бұрын
No, I didn't.
@brandonhall99983 жыл бұрын
Did the Dhm piston come with new rings or did you buy them separately? also the gaskets ect....
@UnknownOverLand3 жыл бұрын
The piston came with rings, spark plug (if you add it to the order) and the spark plug spacer. I believe the gaskets are also included.
@brandonhall99983 жыл бұрын
@@UnknownOverLand thanks for the info man, looking at thier stage 3 upgrade kit (for previous customers) and it doesn't say or give the option to add them.
@UnknownOverLand3 жыл бұрын
If you email them, they have been pretty fast getting back to me previously. So I’m sure they can help also.
@giannissakalis12304 жыл бұрын
Great video man . I hope your bike will get a little bit more low-end power . I want to say that in my country (Greece) ,this same engine was fitted to Honda innova bike ANF125 . These engines have an 'Achilles heel' with their connecting rod. I would recommend to drive your bike carefully for at least 1200kmh (~800miles) and don't rev it past 6-7k , just to make sure that all the metals especially the rod and the piston will break-in as they should. Btw one of my friends has this bike an has a 67mm piston and +10mm stroke. It has 30+hp hehe
@UnknownOverLand4 жыл бұрын
Thank you for that warning, I’ll definitely keep an eye on the break in. I hadn’t heard of issues with the connecting rod here but I can see where it could be stressed more than they expected with some of these changes. Sounds like your friends bike could be quite fun.
@giannissakalis12304 жыл бұрын
@@UnknownOverLand Yeah it is a beast . These engines are at least 15years old in my country. Saying that It actually means that different models of the Honda bikes, use the exact same engine. A lot of people here are experimenting with bigger bores and tuning.. so they know where this engine is lacking rigidity. For example the new Honda GTR(150) in Thailand is 8 years old but in my country the bike came in 2019 ...
@UnknownOverLand4 жыл бұрын
That makes a lot of sense. We're a bit behind on getting these bikes out here, especially the Monkey version. The Grom community has had a good head start at least.
@CANE12024 жыл бұрын
Thanks for the video. Always enjoy them while you hook Albert up with more goodies. Question, what oil are you running?
@UnknownOverLand4 жыл бұрын
Thanks! I run Motul 7100 Synthetic 4T 10W40 oil in the bike. After the initial oil change I had swtiched to synthetic and hopefulyl a good weight for the weird temperature swings we tend to get in Colorado.
@jonathanweisman86574 жыл бұрын
Hey I love the video , I have a question about the rings I have the kit and I'm trying to figure out if the silver ring goes in top spot or second on piston and what is the placement for the black ring. And what was the order of the measurements . 008 , .009, .010 and . 011?
@UnknownOverLand4 жыл бұрын
You should have 4 rings and an oil ring. The two thinner ones are basically the same and go above and below the oil ring. The thicker compression rings should have a 1 and 2 marking on them (I think at least the 1), the silver one should have a 1 and goes on top. The top one for me was .009 and the second compression ring was .011.
@jonathanweisman86574 жыл бұрын
@@UnknownOverLand you did not have to file down the rings that go over the oil ring did you?
@UnknownOverLand4 жыл бұрын
It's good to check them, but I did not have to file them. They're more spacers than for compression.
@jonathanweisman86574 жыл бұрын
@@UnknownOverLand thank you very much for the information
@UnknownOverLand4 жыл бұрын
No problem.
@rickst.33304 жыл бұрын
Ordered mine yesterday from DHM, did you put any mileage on it yet? And what are your thoughts and/or concerns?
@UnknownOverLand4 жыл бұрын
I’ve put a few miles so far and no issues. Hoping to get out today and really warm the bike up and see. My main concern is just getting the timing dialed in, but otherwise even just trying to ride sane you can feel the change in the bike.
@rickst.33304 жыл бұрын
Unknown Overland Nice, after the installation of the parts that are on the way I practically have the same setup (Chimera intake, Yoshimura straight cyclone exhaust, Aracer RC mini 5 with AF1 and the Takegawa N-20 camshaft) so very interested in your story and your the ignition settings on the Aracer. Although here in Europe we only have the higher RON fuels (95 and 98).
@UnknownOverLand4 жыл бұрын
Look for the comments here from DH about the timing, here in Colorado I can primarily find 91 which is why I really needed to look a bit at the timing. I did notice a bit of a knock at partially open thottle so pulling back the timing a little has helped clear that a bit. Another thing to watch out for is idle RPM, I noticed that my air screw needed a fair amount of adjusting to keep the bike idling at about 1400RPM.
@reidspeed772 жыл бұрын
Superb
@UnknownOverLand2 жыл бұрын
Thanks!
@cloggsy19714 жыл бұрын
What difference did the piston make to the speed, torque etc.?
@UnknownOverLand4 жыл бұрын
There's definitely more torque as the piston is doing more work. There should be a bit more speed increase, but I'm still trying to figure that out.
@RiggerbeeOffRoad4 жыл бұрын
Did you get a spark plug and spacer with the kit ?
@UnknownOverLand4 жыл бұрын
Yes, I did. I should have shown it in the video, but the kit did come with both.
@RiggerbeeOffRoad4 жыл бұрын
Yeh I can't find info anywhere on how the spacer fits, I'm looking to do the same install next week
@UnknownOverLand4 жыл бұрын
Ah, the spacer will go on the end of the spark plug where the threads are. It’ll keep the plug just slightly further since the new piston is going to be a bit closer than stock.
@ashleymarmolejo92264 жыл бұрын
Is this the DHM Honda Grom Stage 3 Package what does it come with
@UnknownOverLand4 жыл бұрын
For the Honda Monkey I used this one: www.dhmotoring.com/products/dhmstage3monkey. If you have a grom, the one you mentioned should work for you. Depending on what you need, he has different options, but my kit came with the piston, rings, and spark plug (with the needed spacer).
@Shmack_ Жыл бұрын
Oil cooler needed?
@UnknownOverLand Жыл бұрын
I think that depends on how hard you push it and how hot it is where you live. I had an oil cooler on mine and temperatures seemed to stay reasonable, while I believe many others don’t run an oil cooler on it.
@nq28472 жыл бұрын
How's the durability of the kit so far?
@UnknownOverLand2 жыл бұрын
While I had it, I had no problems with the piston. Things just seemed to work which was great.
@nq28472 жыл бұрын
@@UnknownOverLand Awesome thanks! Just purchased.
@salsalvador24 жыл бұрын
Great video brotha .. I just installed my dhm piston .. my question is .. what's the process after install with Aracer and brake in ?
@UnknownOverLand4 жыл бұрын
Thanks! The first thing after this install is to watch what octane gas you’re using; at least 91 but 93 is available is preferable (I only have 91 basically available). On the aracer, if you have the AF1, make sure that you have Auto Tuning enabled to allow it to get used to the changes. Also, you may want to keep an eye on the “spark angle” (which is used to modify the timing on the engine). If you’re hearing a knock you may need to dial that down a bit, keep an eye on your spark plug coloring. For break in, I basically used the ideas here: blog.wiseco.com/proper-engine-break-in-after-a-rebuild (about half way down the page). It’s a series of warming cycles for the engine but once that was done I just started riding like usual.
@salsalvador24 жыл бұрын
What did you set your spark angle to ? I have mine set at -2 across the board
@UnknownOverLand4 жыл бұрын
You’ll likely need to just watch how your bike is handling and sounding. -2 should help cool down the engine a bit by making sure ignition is closer to compression but make sure and pull your spark plug to see if it looks like it’s coloring is good.
@tonza30864 жыл бұрын
Do you think 98 octane would be enough for this setup without touchig the igninition and without octane booster
@UnknownOverLand4 жыл бұрын
I believe that 93 or higher and you’re likely safe. One thing to watch out is who pumped gas before you and what they used. The monkey tank is so small that the fuel in the hose itself could possibly fill up a good portion of the tank, and if they went cheap then you’ll be stuck with that.
@DHMotoring4 жыл бұрын
Awesome video! Do you mind if I embed it on the product page?
@UnknownOverLand4 жыл бұрын
Thanks so much! Nope, I don't mind at all.
@DHMotoring4 жыл бұрын
@@UnknownOverLand I believe you can only get 91 octane up there? You might want to dial back the timing some if you're using the base timing map from the RC2. I believe it sees about 30 degrees at WOT at high rpm. You want to be around 28ish to be safe on 91 in the heat, and you can pull some out of the part throttle areas as well if you hear any knocking. 14/36 gearing works well, and let it breathe to around 10,500rpm!
@UnknownOverLand4 жыл бұрын
@@DHMotoring You're right, 91 is about all I can find around here, so I'll make sure and take a look at the timing like you recommend (especially since we're finally getting warmer around here). I just put a 36T on the back with a 14T on the front, excited to see what this little bike can do with these changes. I didn't quite understand what you mean about what to do with the throttle if there's knocking. Thanks a ton for all of the info!
@DHMotoring4 жыл бұрын
@@UnknownOverLand Sorry, I meant if you're hearing knock/detonation at part throttle situations, you can pull some timing out of the part throttle maps on the RC2. So the timing map that is TPS x RPM, at the TPS percentages that are not 100% you can pull some ignition to keep it from detonating. The default timing maps in the aRacer are aggressive compared to the stock ECU (because they're designed for performance) but are usually fine when running fresh 93. But if you're noticing any knocking or hesitation at part throttle situations, try dialing the timing back some.
@UnknownOverLand4 жыл бұрын
Awesome, thanks a ton for the explanation; totally makes sense now.
@ratscoot4 жыл бұрын
Hope you did an ECU reflash or installed a fuel tuner.
@UnknownOverLand4 жыл бұрын
I didn't mention in this video, but I have an aRacer installed that's all prepped for these changes. But very good point, especially with the rest of the changes I have.
@ratscoot4 жыл бұрын
@@UnknownOverLand Ok thanks, i think you would melt the piston in the long run without a fuel management system.😁
@UnknownOverLand4 жыл бұрын
True enough, though I guess that could be an interesting video! :)
@bfarm444 жыл бұрын
Results?
@ratscoot4 жыл бұрын
@@UnknownOverLand lol. Just don't change ignition timing with the Arcer on a high compression piston or you will get detonation destroying the piston.
@tonza30864 жыл бұрын
what may be the problem, when i opened my engine to check how big my cam and piston are and when i put the engine back together the top speed was like 13kmh less and the acceleration was worse and overall it lost power
@UnknownOverLand4 жыл бұрын
You only opened things up to check and not replace anything? It depends on how much of the engine you took apart and what might going wrong. If you pulled the cam out, you may want to check you put it back in right and then also check the valve clearances to make sure everything is looking good. You may also need to double check that you got all of the timing back in line (make sure the bike is top dead center and that the cam gear is lined up with the mark). If it's not these, you may need to go and start looking for any leaks maybe with gaskets that got folded over or something.
@tonza30864 жыл бұрын
Unknown Overland how do i know if i put the cam back right
@UnknownOverLand4 жыл бұрын
I have a video (kzbin.info/www/bejne/o3Ldl5J3mMyngJI) that shows how I removed and upgraded my cam. There should be a fair amount of steps show in there on how to get to TDC and how to align the chain and the cam properly.
@tonza30864 жыл бұрын
@@UnknownOverLand do the lobes on the cam have to face a specific way at tdc
@UnknownOverLand4 жыл бұрын
When you install it, the groove of the camshaft should be facing upward, once inside it should somewhat easily turn a bit more forward (toward the notch in the frame) without much resistance.
@daisbestDA93 жыл бұрын
Didn't mention anything about the o2 sensor
@UnknownOverLand3 жыл бұрын
You’re right, in a previous video I had replaced the stock o2 sensor with a wideband for the bazzaz (and later the aRacer) so I didn’t have the stock o2 sensor on the bike.
@bentareholmsen21636 ай бұрын
The ring is bigger when it's hott.
@nekatrall4 жыл бұрын
Don't forget to tune it. Cjr advances the timing quite a bit
@UnknownOverLand4 жыл бұрын
Definitely, I have the aracer in there, I just need to get the timing sorted out on it. Thanks for the reminder!
@nekatrall4 жыл бұрын
@@UnknownOverLand good to know.
@Filmpilot Жыл бұрын
Link doesn’t work for ring gap from wiseco- just saying-
@UnknownOverLand Жыл бұрын
I'll have to see if I can find a better one.
@Filmpilot Жыл бұрын
@@UnknownOverLand I thought I posted one. Maybe it got torched.
@jered21774 жыл бұрын
That will help pull in 4th gear
@UnknownOverLand4 жыл бұрын
That's what I'm hoping for. Just need to let it break in bit and we'll see what it does.
@ratscoot4 жыл бұрын
@@UnknownOverLand maybe add a cam too.
@UnknownOverLand4 жыл бұрын
@@ratscoot I have the TB Cam installed in the bike as well. Running out of stock things on the bike! :)
@Commsfarage3 жыл бұрын
Nice video still don't understand Americans not using mm instead
@UnknownOverLand3 жыл бұрын
Thanks, and you're right; I'll never understand why we stick to the imperial system.
@Commsfarage3 жыл бұрын
@@UnknownOverLand we kinda do but when it comes to small accurate measurements mm is always best. work in a sawmill we use metric for a general size but a 8x8 could be a 203x203 for 4x4 otherwise you'd get odd sizes
@jeffward6166 Жыл бұрын
Set ring gap from the bottom of the cylinder.
@nicksoup4 жыл бұрын
I really appreciate this video, it's very helpful but you are setting people up to fail by not mentioning the special 17mm slit socket you need to remove the o2 sensor, that stopped me in my tracks.
@UnknownOverLand4 жыл бұрын
Thanks for the feedback, it's really appreciated. In a previous video I had already removed that O2 sensor, so didn't really think about it when doing this video. In that video (yoshi install, this is about the right timestamp, ignore the music: kzbin.info/www/bejne/b2TJf2Oop8yciJY) I actually used a closed ended wrench and slipped it over the "plug" end of the O2 sensor and all the way down to pull the O2 sensor. It took a bit, but worked.
@nicksoup4 жыл бұрын
@@UnknownOverLand oh wow, I gave up and bought a 17mm socket and cut out a slit, which was annoying but it'll work. Otherwise I really do mean it when I say it's a great video, it answers so many questions I didn't know I'd need to ask. I felt ready to tackle this and then the o2 sensor stopped me.
@UnknownOverLand4 жыл бұрын
I'm glad it could help, and I really am appreciative of you pointing that out since it definitely escaped my mind (I added some info in the description box which is about the best I can do via youtube limitations). When I went to do the Yoshi install I hit that same problem and got really close to buying the split socket so I know that frustration.