10,000 Rev Limiter + T-Bolt Cam Install | Honda Grom

Really excited to put the new cam in my Grom. It will give me more top end performance and the tuned ECU I got from DH Motoring will give it a 10,000 rev limiter as well as being tuned for the current mods (including the cam)
If you guys are interested definitely get up with the guys at DH Motoring. This will be my second tuned ECU from them and I couldn't recommend them enough. They can also do OG and SF Grom ECUs now.
www.dhmotoring.com/
Follow up video/review:
• 50mph Loopie | T-Bolt ...

[@trevorclaar7122]

That was your automatic compression release so it turns over easier at low speed than flings back and you get full compression once it starts

[@cjenterprises8913]

I used this vid to get my cam installed yesterday. Made the process extremely easy.

[@GromGarage]

Glad it helped🤙

[@nicholasmezes5043]

What torque pounds is recommended

[@GromGarage]

Check the service manual.

[@well_as_an_expert_id_say]

@@GromGarage The service manual will have the torque specs for that invasive of a job?

[@GromGarage]

Yeah it will

[@siraff4461]

Mechaninc tip - if you're struggling to find TDC because of compression moving the motor just drop the spark plug out. Not really an issue on a grom but on some bikes it can be a pain.

[@GromGarage]

Thanks for the tip 🤙

[@thenipplerider4323]

Ingenious man

[@crazymanonweed117]

Great video dude just a little note oiling the new cam before install would be recommended so it is protected on the first start up. Keep up the vids : )

[@MrHanichak2]

She sounds great man I can't wait for the review!

[@GromGarage]

Gonna wait a week or two and then I’ll have a review video. So far I’m absolutely loving it. Only one downside to the cam but I’ll go over all that in the video👌🏻

[@TheJuiceMane]

Nice man! That was decompression mechanism on the stock cam it's for easier starting

[@auomauom]

I just did this install today. Same parts too lol

[@mistertravis4690]

Very informative! Excellent work and thanks for sharing.

[@GromGarage]

Thankyou very much! Glad I could help!

[@brianpumphrey8761]

I have the the tb cam, intake and exhuast tune from David, I love it!

[@delilahzx10r47]

Did you still have to so all this ?

[@FredChiTown]

Great new update !!

[@Rayxlaced]

Nice! Cams do make big changes.. Thanks for the updates! Your awsome!

[@richardgollwitzer2135]

for my old bike I did a cam and heads went from 60-70hp - 100hp so it can be massive of changes however cams can do more than just performance you can adjust your torque creating more low end power which is great for wheelies so the. because the grom makes so little amount of power less than 10 1hp equals more than 10% of power that's a huge gain in power for the motor. the cam changes lift and duration so how long the valve stays open and how far the lifter lifters move. adjusting these allows for changes in many directions.

[@ichihusni5014]

Grom use the same engine as supra x 125 helm in in indonesia. Maybe you can look up at bintang racing team for some racing part. They produce stroker crankshaft kit, big bore kit, big valve heads, camshaft, vavle and clutch springs etc. Im not working for them, just some info to look some parts from. Have a nice day.

[@uspnightfire115]

Anyone have any feedback on the reliability of a cammed grom? Is the stock cam balanced and the new cam is too I assume?

[@dragking9735]

i can see what the cams specs based on its on Design its a regrind camshaft with a 270° duration with a 107 overlap with in and Ex, in Philippines we just can it as stage 2 racing camshaft

[@davidnoob9421]

Whats torque rating for the bolts for valve, bracket, engine, chain tension etc

[@calebarnett]

Good quality bro

[@bnolsen]

The zip tie method rocks, seriously.

[@judge9637]

So what's the differences in the cam??

[@nikomarti]

Fayetteville grom squad. 🤘🏼

[@timmytexlonghorns2206]

it's always a good idea to put a new copper washer in those are made to squish down and seal to the block and once it been used once you can flip it and after that you should put a fresh one on for a good seal

[@GromGarage]

Thanks for the tip 🤙

[@zwzonline619]

A long nose plyer would be the best tool for removing and installing the cam sprocket

[@joegraham2223]

Just went to order this and it was out of stock. im bummed but can't wait to see the review video

[@GromGarage]

Damn. Sorry to hear that, hopefully he gets them back in stock pretty soon. Review video should be out on the 24th.

[@richland113]

Hey bro i commented on one of your last videos and it helped me out a whole lot. Question this time is did you have any issues with your tb cam? I blew my top end and head.

[@mrgap702]

What’s the max speed?

[@Filmpilot]

The lobe difference is lift and duration. How far open the valves are and the timing of stroke of the valves during the open and close cycle.

[@sloauto1567]

Stage2 cam?

[@moscovich1822]

How far does my Honda Chrome need to be upgraded or motted before I start putting a new Cam ...?

[@ggxmango9230]

On the timing chain tensioner bolt the threads stripped out on my 2015

[@garrettharris9652]

Hey man just followed this to a t except did valves to .003 based off what dhm says now but after starting it up and resetting ecu, it does absolutely nothing but bog down. Can not go above 5k rpm any tips?

[@djlinux64]

You got the engine sprocket tooth wrong

[@Razuki]

What's the LED lightbar you've got there, are they 3 individual items you've fixed together, or do they come fixed as a set of 3?

[@GromGarage]

Check the channel for the video about it 🤙

[@muhammadsyafiqabdullah2473]

Its decompression cam, to make a lot easier to start.

[@tyslife1798]

Was it hard to line up the sprocket with the cam indent?

[@GromGarage]

Dude, I don’t even remember lol. It’s been a while and I’m not necessarily good at engine stuff like this

[@John5XR]

Great video! I am interested in replacing the cam in my Honda Monkey, but don't wanna lose low-end power. Curious to see your follow-up 👍

[@rmdhndwi]

Replace the piston with a higher compression ratio

[@ichihusni5014]

Or stroker crank

[@ichihusni5014]

Or use custom cam with high lift but smal lsa and high overlap

[@Ultermategamerz]

There's a few cam options also specific for low end or a small (but modest) increase over the full range

[@dfitzism]

Have you done the update video yet? Curious to see how you like it?

[@GromGarage]

Yes, it’s the 50mph loopie video where I talk about it. That should show you how it is compared to a stock-ish grom

[@FELiPES101]

I'm assuming there are more official tools you can buy to do the valve clearance?

[@GromGarage]

Correct

[@justincrossland4595]

Hey buddy where did you get your clear can cover at

[@GromGarage]

It’s made by otb, you can get it through a bunch of different retailers. MNNTHBX, Hard Racing... etc.

[@ryankemp3602]

Did you install an aftermarket cam chain tensioner?

[@GromGarage]

Nope, stock

[@FPV_amDerek]

The new cam will open and close the valves quicker. And will also allow the valves to open more allowing more air and fuel into the combustion chamber. More air and fuel = more boom :)

[@GromGarage]

Kinda knew it would move more air but just didn’t want to be the guy to try and describe something that I don’t know much about 🤷🏻‍♂️

[@rmdhndwi]

No, the new cam will open valves longer so it moves more air and fuel to the cylinder Because of longer opening, you lose some low end power

[@TryHardln]

More boom = More fun :)

[@cameronmcnair458]

In cams usually performance or aftermarket parts extend the duration of when the intake and exhaust valves open, maximizing the amount of fuel supplied to the combustion chamber therefore giving you more power

[@GromGarage]

*mind blown*

[@5463546]

Can you run the cams without the exit flash?

[@cameronmcnair458]

Mick anytime you change the cams you need some sort of tuning to make the engine gain hp

[@travisscates8494]

What exhaust is on ur grom in this video?

[@GromGarage]

Dinger Built 🤙

[@vizard325]

Can you do a review of you riding it and acceleration? Thanks!

[@GromGarage]

I said in the video that I’ll be posting a video in a couple weeks a review 🧐

[@tormor]

+spring vav up12,000 rpm

[@Justin-mz2jj]

Forgot to mention, there is a fill port for the cam chain tensioner spring/pin.... if you let your bike sit over night like you did it'll fill up but if you start right away you could jump time and damage your valves or piston, I did the above... so dont forget to prime the cam chain tensioner pin/spring....

[@tyslife1798]

How do you prime them?

[@jaysonr123]

Ya how do u prime it ?

[@Justin-mz2jj]

There is a bolt on the flywheel side of the engine just above where the cam chain tensioner plug/spring is. If you pull the bolt out fill it with engine oil. I use a small oil can and put the bike on its side then I pump the oil in till it overflows out the hole. Then plug it.

[@jasongomezmma]

Hey bro, recently did this and my cam sprocket tooth broke while trying to break it in. Do I have to take out the head to try and find this small piece that broke??

[@GromGarage]

I would highly recommend taking it as far apart as you have to to find the piece. Pull head, drain oil, set it all on fire, call an exorcist something to get that piece out before it grenades your engine.

[@jasongomezmma]

Grom Garage thanks for the reply, huge help. Time to get to work!

[@grren1782]

Why didn't you take the valve cover off? Whole lotta extra work for no good reason

[@primedirective00]

What does this do to your low end? I'm all about less mass and more RPMs but I'm not trying to tank my low end or have to rev the bike out to get anywhere.

[@GromGarage]

It definitely takes a hit to the low end, for normal riding i recommend it because it only kills the low end power around 4k rpm or below... but for wheelies like circles or just slow wheelies it’s more difficult... again, for normal riding you are in the power band all the time except for leaving the light in first. I went back to the stock cam and I definitely miss the cam

[@primedirective00]

@@GromGarage circle wheelies are very important in intersections at redlights. Did you try increasing idle speed a little? I'm looking for all around improvements first I guess before I start doing race mods. I want to try this maybe if there are some mods I can do to offset loss of low end without changing gearing. I swapped ignition coils with nology and it definitely hits a lot harder off the line... improved fuel economy a bit too... but I wonder what else there is 🤔

[@gojaimo]

I just installed my last week. Got the tune and the cam also. So far I’m loving the top end but the sometimes it bogs on me at lower RPMs, especially taking off... sometimes it just bugs on WOT while bike is in neutral...you notice anything strange or bogging?

[@gojaimo]

Bogs not bugs lol

[@GromGarage]

I would try resetting the ecu

[@gojaimo]

Grom Garage I wanted to. That should hurt the reflash right?

[@GromGarage]

I believe the reflash done by dh does a whole new tune while the “resetting” of the ecu does a fine tune adjustment for temperature, altitude, etc. You can always message him and ask but I’m pretty sure that it’s ok to reset it

[@DHMotoring]

Jaime you can definitely do an ecu reset without it wiping the tune.

[@andremillette7142]

What intake is that on your bike?

[@GromGarage]

Only intake that should be on a Grom - Dinger Built!

[@liamh9100]

I’ve just bought a grom, from a dealership with 400 miles on it. It does 76 mph on a long straight and revs to 10k... reckon it’s already been modified?

[@dubscrubz3888]

Liam H yes stock won’t rev to 10k or get near 76mph

[@jal187]

Just brought a zero mile 2020 two days ago and I haven’t gone full throttle yet but yeah no way stock is reving that high and hitting that speed. Can’t wait to start modding mine. I’m years behind all my buddies lol.

[@samtarariverasanchez59]

How to eliminate airbox that’s what I’m trying to find out I have a Motrac 125cc efi

[@djlinux64]

@@samtarariverasanchez59 do not just do the snorkel mod inside

[@ainamal]

​@@dubscrubz3888my stock 22 Grom hit 75 mph once. Casually cruise on highway at 68 mph.

[@Yooper]

Not going to lie I did every part step by step and ended up rolling it over and broke a valve I must of had timing wrong ?

[@GromGarage]

Damn. That freakin sucks

[@AmirPomen]

Ditch that plugin fixed tune ecu... Get this full standalone ecu... U can do the engine mapping using tab/phone via bluetooth as well as the luxury of having quickshifter

[@GromGarage]

I didn’t need all that. The tuned ecu I got it more than enough and I’m outrunning everyone I ride with

[@Brenby]

What foot pegs are those? They look super tough.

[@GromGarage]

They are zz customs pegs

[@andreasmikoleiczik6120]

Can the tune the new ECUs that have ABS?

[@GromGarage]

Yes I believe they can! Definitely check out their website. They should have the full details there

[@nickmendoza1140]

out of curiousity what did you set your valve clarance to?

[@GromGarage]

I can’t remember nothing, that was a year ago, it’s back to stock clearance now with a stock cam

[@ericworthington7299]

@@GromGarage why did u go back to stock?

[@theboogieman401]

Next time just zip tied together so you don’t lose it with your chain and then you can put it back to that’s exact point you’re welcome

[@jbean530]

Good idea.

[@theboogieman401]

@@jbean530 np man

[@goose31171]

where did you buy those feels gauges?

[@GromGarage]

The feeler gauges... Amazon I think 🤷🏻‍♂️

[@GromGarage]

I bent then myself to go clarify

[@j.m.5995]

Are valve adjustments done on cold engine or on an engine at operating temp?

[@GromGarage]

I did it on a cold engine... I have honestly never even thought about doing it when it was warm

[@j.m.5995]

@@GromGarage You did it right from what I gather. The whole idea is for it to be consistent and repeatable

[@GromGarage]

Maybe just double check it after a few hundred miles or so 🤷🏻‍♂️

[@j.m.5995]

@@GromGarage Not a bad idea at all in fact I believe it's what most manufacturers recommend.

[@chercheng2158]

Did you have to reset the ecu after you installed the dhm ecu? Thanks!

[@GromGarage]

I don’t think I did, but you could ask dhm what he recommends

[@chercheng2158]

@@GromGarage thanks brother

[@djlinux64]

Just do it all you need is one paperclip

[@ballstud2007]

Why would these not have hondas famous, screw and jam nut. For the valve adjustment?

[@IrnMaiden304]

That's what it is, they've been using the same little engine since the original Z50 CT70 ATC70 .... The head is different and so is the cam as I see they have roller bearing on the one side and not the old machined slick surface.

[@InMn]

What exhaust setup did you have with this

[@GromGarage]

The only exhaust that should be on a Grom - Dinger_Built

[@InMn]

Sweet! Thanks for the reply! I just msged him. Hope he's still making exhausts.

[@GromGarage]

I don’t think he is, but you can always ask

[@tuuhaastaa]

can a engine with cam and aftermarket echaust handle 12k rpms?

[@GromGarage]

I am no tuner. I have no idea... I’m sure you could get to 12k atleast one time. But just to be honest I think 10k puts enough stress on the motor

[@tuuhaastaa]

@@GromGarage okay, im just looking to buy a kitaco imap and it makes it 12k rpm

[@vtecequipped]

Where you get that converse on your kickstand? 💥

[@GromGarage]

It’s a converse keychain... it fell off 😓

[@cameronsmith3441]

Some people also use a chew toy for birds. Sounds retarded but google it lol

[@GromGarage]

Cameron Smith hmmm. Ok thanks lol

[@rchotboy154]

Nice bro were u get the clear case

[@GromGarage]

OTB clear cam cover. Most online Grom shops have them

[@rchotboy154]

Thanks bro🤝

[@tyslife1798]

This is the only isntall video where the rocker arms are not removed is there two ways to install a grom cam?

[@GromGarage]

I couldn’t tell ya... my setup works totally fine Not a professional but I did my best and I have had 0 issues

[@tyslife1798]

@@GromGarage well wish me luck i just ordered the same cam and ecu

[@GromGarage]

Nice man! And good luck 👀

[@tyslife1798]

@@GromGarage check out my custom honda grom intake video on my channel! Why pay 100$+

[@Memito-]

Love your bike! Where can I find that headlights?🙏

[@GromGarage]

amzn.to/3iTvuYi

[@Memito-]

@@GromGarage thank you!

[@budgreener3284]

You have a video of riding?

[@GromGarage]

I have a bunch of videos. One in particular that came out shortly after this where I talking about it

[@well_as_an_expert_id_say]

He didn't link it but he posted it the next week or so kzbin.info/www/bejne/a4TPpmR4pKyhiq8

[@levigrafton6854]

The left over parts 😂😂😂

[@GromGarage]

“Weight reduction”

[@wavergarage9098]

hello friend,please use degree wheel& dial gauge for tune your camshaft, with cam sprocket adjustable

[@GromGarage]

Cam sprocket is not adjustable. It only goes on one way

[@wavergarage9098]

@@GromGarage How much you have in PSI?

[@GromGarage]

I don't understand what you mean?

[@wavergarage9098]

@@GromGarage your engine compression in psi bro

[@lahtine876]

Doch head for grom would be awesome

[@mikopekkola5494]

Driftnoob You mean 4 valve head?

[@lahtine876]

@@mikopekkola5494 emmää sellaasia meinaa mutta oisha tuplanokka helevetin maukas tuli vaan mieleen

[@rashidnaga]

Engine same honda wave 125.

[@jettv260]

That's compression release sir..the old cams..it's easy to kick start if your cams have a comp release.. but the new one no comp release but very power compression

[@GromGarage]

Well there’s no kickstart, but I have seen that my grom sometimes takes a little longer to start when it’s cold due to the powerful cam

[@jettv260]

@@GromGarage hahah I know sir.. because that's engine Honda groom is very common engine in the Philippines sir.. my friend mekanik if trying to upgrade well remove the compressor release then replace a new cam.. higher camps the kick start or the starter can't easily start the engine.. I from the Philippines sir.. 😁

[@nomandatoryvaxing7433]

I love the part in the install where he doesn’t show you how to properly remove the cam haha. Just kidding it’s probably not that hard right?

[@GromGarage]

It just pulls out with some turning of the cam to clear the lobes. service manual can be some help too

[@AmirPomen]

And to fully utilize the bigger profile cam... U can get this higher compression piston as well as thinner ring and nrrow skirt design for reduced friction from this company: www.hispeedpiston.com/ThaiProduct/RacingPiston/ProX/

[@danandyong6653]

So,... you just slammed it in without oiling it!?

[@GromGarage]

Worked fine 🤷🏻‍♂️

[@stevewall6811]

womens nailpolish also works good for marking timing

[@IrnMaiden304]

Work's good as a replacement for Loctite also ....

[@henray76]

will men nail polish work too?

[@stevewall6811]

@@henray76 you tell me, you’re the one who uses men’s nail polish.

[@jeremyclark1237]

I’d lube the cam/lobes before install

[@GromGarage]

It came pre-lubed

[@seanwatts392]

Dale Walker yes it is. It wouldn’t come with it if it wasn’t enough

[@mechtechau]

The lube most engine components come covered with is for storage, not assembly. Different lubes do different things. Prelube all the things, preferably in the oil you will be running the motor at the time with. There is never an assembly situation where there is too much lube.

[@4door_papi]

Grom Garage more lube the better still need to change ur oil either way 🤷‍♂️

[@devinporter4028]

You can use a zip tie on the timing chain and just slide it back in the motor🤙🏻

[@johannesmuller1288]

In Germany we call it scharfe nogge

[@IrnMaiden304]

So no auto decompression unit, hotter cam, and an ECU with a 10k rev limiter. So no upgraded valve spring's / valve's / retainer's .... Floating valve's much ?

[@GromGarage]

Nope, don't need to do any of those. No issue with valve float

[@IrnMaiden304]

@@GromGarage Interesting ....

[@EstebanAGaido]

You forgot to pre-oil the cam. Lube it all the way on the bearings and all surfaces. If not, when first start it will be dry as a dog´s ass causing undesirable frictions ;)

[@SKC56]

At least it's roller, not flatty stuff

[@domnickachhap5968]

Thats a high lift air and oil intank cam lob it open in some rpm which its ment for its just like vtec.

[@simoncorriere8209]

domnic kachhap not just like vtec but ok

[@simoncorriere8209]

domnic kachhap it’s the decompression, bud

[@thungarisnaughty]

Good info bad tools

[@22Webstar]

Yeah with out decompression, you will need a lithium battery to start it after a few times

[@GromGarage]

Definitely don't... I'm still running stock battery

[@22Webstar]

@@GromGarage Wow, that's awesome, please let me know how long your battery last, or if you have any issues

[@cdottley]

Also break in new hard parts with non synthetic oil.. synthetic in a grom is a waste regardless and not worth the clutch issues

[@trucker2b]

the ending was funny af... man it didnt feel diffrent ... dont look at me.... palm...

[@surfjat15]

Can anyone confirm that’s what the normal idle sounds like after having that cam and ecu installed ? Sounds BADASS I’d even turn the idle screw down more 😂

[@user-nsixfour]

Its normal. The lobes on the cam are optimized for high rev ranges which means it has a harder time idling.

[@surfjat15]

Matt well that is badass

[@Lazer-rj6vu]

Just exhaust is loose.

[@GromGarage]

Actually noticed later on, got it fixed lol

[@Lazer-rj6vu]

Grom Garage sweet!

[@jaisongrabello4844]

your exhaust pipe sounds funny..

[@GromGarage]

It sounds really good in person! Really deep and mean. Only thing I would warn people is it’s louder than stock but that goes with any aftermarket exhaust. This exhaust is really built for power

[@jaisongrabello4844]

@@GromGarage oh i see maybe the mic on the cam cant pick it all up.. but its all good bro.. nice build!!

[@GromGarage]

Thanks man!

[@masprassaja3818]

Man, it just 125cc, i feel bad for that tiny engine, poor groom. :(

[@armdrop101]

.003i and .004 e

[@Grainsauce]

10k rev limit is a little much for this engine, especially since the power drops off at around 8,000 rpm...

[@GromGarage]

Definitely not too much for the engine. I has been tested during a 24hr race where it stayed between 8-10k RPMs for 24 hours with only a few breaks to refuel and change riders

[@topkek7003]

thats what the cam is for

[@choppaj247]

You walked away unimpressed

[@GromGarage]

It’s actually a pretty big difference to be honest

[@choppaj247]

@@GromGarage oh ok! I just installed intake/exhaust DH ECU and I can feel a huge difference. So if this is ANOTHER huge diff mod seems like this is next. How many miles you have on this set-up so far? Wondering long term reliability

[@GromGarage]

Probably 2,000 miles so far, loving it for speed up high most definitely. I personally will be going back to the stock cam but that’s just because those really slow wheelies like circles need more low down power. But for just normal riding it is amazing!

[@dundycbr23]

u spinning engine wrong way

[@GromGarage]

I was, but in the end there were 0 issues. Didn’t know at the time but people have definitely corrected me lol