What's Wrong With This CRF450 Motor?

[@jakerobbins5724]

Please don't stop making these awesome videos, I love watching them!!

[@CameronNiemela]

Couldn't do it without you guys watching and leaving awesome comments! Thanks dude!

[@EraZz187]

it's like porn :D

[@danshealthylifestyle8443]

can't believe I'm getting all this knowledge for free. this is incredible

[@rockbranchlaw7931]

So much knowledge and confidence to just take apart every component of the engine without hesitation.

[@CameronNiemela]

All comes with experience and just a love for wrenching.

[@denwiessimo6088]

A compliment for not selling any useless crap in this video.

[@1keykneedeep]

Thats alot going on. Starting to love the 2 stroke again.

[@nickj6275]

Not as bad as you think once you learn the 4 stroke it’s extremely easy to work on I can have my 250 down to nothing in 30 minutes

[@bikenband]

Rebuilt mine a couple years back and this video was a great refresher course. I went with stainless steel valves and never looked back.

[@jeffloucks2120]

Your videos are therapeutic.

[@CameronNiemela]

Thank You Jeff!

[@murftupperware1012]

This is seriously going to help me out a lot! I just got a 2003 Honda CRF450r with a lot of work that needs to be done and a big part of that is it getting a valve adjustment and it makes sense now because I checked the air box and it was absolutely filthy and seriously in need of a replacement or cleaning

[@MrCalifornia1234]

I could do that no problem. Putting it back together - that’s another story.

[@trufi18]

Man i appreciate so much your patience and effort to do this profissional grade kind of videos!

[@CameronNiemela]

Well I'm truly thankful for you guys watching the videos and giving your support!

[@rotax636nut5]

Nicely done Cam, smooth as an eel swimming in olive oil, loved the music score.

[@shootmalones]

These videos are great, and you actually learn from them👍🏼

[@CameronNiemela]

Dude thanks for watching!

[@tommoss7716]

I’ve watched a couple of your vids now, fair to say I’m really impressed with your knowledge and attention to detail. Great work mate love the vids! 👍

[@clutchitsystems100]

Wow, Cameron, you do a great job videoing AND diagnosing. Kudos!

[@marccaya8412]

Good methods of disassembly combined with good video: well done Cameron!

[@CameronNiemela]

Thanks for watching!

[@burnrubber3361]

Cameron you got mad skills!! Kids don't try this at home unless you have a very skilled mechanic supervising..I'm serious the difficulty factor on this COMPLETE tear down and REASSEMBLE is a solid 9 out of 10....

[@Steven-hg4cz]

Another great video with very nice editing and angles!

[@CameronNiemela]

Thank you for checking out the video!

[@moto739]

Your videos are so beautiful man haha.. You do an amazing job!!! Have you ever worked for a racing team?

[@minasretifica2566]

Congratulations, my friend, for the mechanics videos.

[@jessegrimm9274]

I cant believe your self taught! That video was very helpfull. Keep up your awesomeness!

[@CameronNiemela]

Glad you enjoyed the video Jesse! I've had my fair share of learning experiences along the way haha.

[@rajmundkozak761]

professional equipment and workmanship

[@viceanas9533]

Perfect rebuilt vlog

[@Mattvxr333]

Only ever done top end stuff on engines never bottom, after watchig this video i think id tackle a bottom end with confidence

[@CameronNiemela]

Bottom end build aren't too difficult honestly, just take your time and watch plenty of videos.

[@antonlords6]

Mad skills. Well done young man.

[@revhead9897]

Where did you learn all that you know today? Also, I'm in love with your videos, can't wait for those million subscribers you deserve!

[@CameronNiemela]

Thanks man! I learned mostly through experience and watching others working on bikes. Been taking notes since I was about 12

[@juanapalomino1669]

32229411gustavoadolfo motomoyadolfo edadeshoy

[@kmonaso]

Great vid cinematography quality. Thanks for time and effor.

[@TheTruckhuntervoges]

I need to learn valves and carb work

[@nickchilds3104]

What an amazing video. I can't imagine how long it took you to get all those camera angles, especially with grease all over your gloves.

[@CameronNiemela]

Hey someone understands how much time it takes to film these haha. Yeah, it adds some time to the tear down but it's all fun. Thanks for watching man!

[@Booki89]

Sweet vid! Had no idea that valves can get like that.

[@CameronNiemela]

Thanks for watching!

[@englishmotovlogs6542]

awesome video! love watching them, and great camera patience thats amazing, very slick.

[@CameronNiemela]

Thanks buddy! I do appreciate that.

[@wrenchone5003]

I was gonna say the looks of the intake side of the Piston you could tell it was lack of a air filter. Plus those stock valves are made of butter they are the weakest link .

[@CameronNiemela]

You nailed it, valves were pretty shot

[@evandowning2321]

Pretty peaceful videos my dude. Keep'em coming!

[@2strokin_it]

The valves wear like that normally due to the seat being a harder material than the valve. My guess would be that the motor over heated. Maybe the cooling system, or a lean fuel to air ratio occurred...

[@RussellBooth1977]

It's very easy to pull them down but it's a lot harder to put them back together if you don't rebuild a lot of them. The bore looks scratched right down the bottom of the cylinder which is a pain in the ass because I'd say it's Nikasil coated,to do it properly, the cylinder would need to be rebored & re treated. It seems to be the technology that even Ford have developed which is the plasma arc weld spraying technology which patent Nissan has adopted,it's similar due to the fact they use no cast or pressed in bore liners as such. The valves on the motorbike can be possibly reground & retreated with a titanium coating if economical or just straight out replaced. Shimming is a pain due to the fact the shims are a select fit & it's a matter of getting the right ones. The first of the Nissan R32 Skyline GT-R's used them as well as some of the Toyota engines. I know Nissan used them due to the fact the RB26DETT engine was classed as high performance when made but Toyota used them in the Corollas & Camrys. Wouldn't it be easier for Toyota to use hydraulic lifters in them? Their engines aren't high performance !!!!

[@guitartap]

Its a pity there is no long stroke piston and con rod available for these engines.

[@charliekay6400]

Could we see more full bike breakdowns? Love those vids

[@CameronNiemela]

Absolutely! I'll have another one coming out next Tuesday:)

[@charliekay6400]

Thanks, keep up the good vids

[@john21031]

Awesome video. But why not wash/wipe the engine a bit before disassembly?

[@07STINKYBOY]

The needle bearing on the clutch had no washer on it unless it was stuck to the pressure plate

[@donovanhocking9350]

Holy cow I hope I don't have to do this to mine for a while that's way more complicated then the YZ I did

[@moacirmuniz1085]

Good afternoon from now I apologize if you write something wrong because I do not know English I'm brasilerio, I would like to know what oil, viscosity and ml you put in the inverted suspension of the CR 250? I bought this suspension soon I put it on xr 200 thanks.

[@rbljackson]

So if that will be a complete rebuild, hoping you will show us the process as you go. Or is that one staying apart as a parts source?

[@CameronNiemela]

This bike is for parts only. I will be doing a bike build soon however.

[@jessewerner4067]

Cool video. I would say the original owner wasn’t big on maintenance. Engine was filthy inside. With regular oil changes cleanup would be minimal. Explains that piston and cylinder issue too😣 This ain’t no XR

[@joanllabres5599]

Great video, as always!

[@CameronNiemela]

Thanks!

[@exoticg9]

So much parts on a 4 stroke ... 2 strokes are so much easier

[@CameronNiemela]

True story

[@austinturner5818]

GeekTek that's really not bad if you've ever worked on a car engine working on a four stroke motorcycle engine is a cakewalk

[@exoticg9]

Only worked on 2 strokes and currently working in one, Yamaha DT 50 LCD 1998. Its just at first glance 4 strokes are much more complex

[@behemothfan666ftp4]

Austin Turner "cakewalk" LMAO

[@austinturner5818]

behemothfan666 F T P compared to a car engine yes

[@MrToolean]

Why does the factory use Phillips head screws? Seems like a bad idea.

[@upward_onward]

Man that was solid stuff.

[@noah_rides8260]

Great video always learn stuff from them

[@CameronNiemela]

I appreciate you watching!

[@tomasnokechtesledger1786]

Nice disassembly!

[@kato695]

To all the boys and gilrs out there, before pulling down the engine, clean it very well before starting!

[@joztunes69]

Just by looking at the engine while you take it apart, I'd just do a complete overhaul rebuild, top and bottom

[@CameronNiemela]

Yeah it's being sold in parts regardless.

[@JerryJrsGarage]

Awesome video! I like all the info at the ending too!

[@holeshotv311]

With all that damage to the Cyl. Wall, I would say someone was doing a poor job of servicing their filter.

[@tonygee3284]

Had a 2008 CRF 450 22hrs later 5th gear started slipping out stripped to find 5th gear drive dogs rounded off got a file n it was soft on other side too piece of junk rebuilt it and went back to a yz250 2009 brand new still got her and loving it

[@ajman1999]

Great Job.greetings from Poland

[@CameronNiemela]

Thank You! I appreciate you checking out the video.

[@ajman1999]

Cameron Niemela I thank you for making such great movies

[@adamalic6319]

Hey Cameron can you send a link to where you got your case splitter from thanks 👍🏽

[@MrVinylJunkie]

Awesome Video, And Thank God For "Two Strokes" !!! :-)

[@CameronNiemela]

Yess! I love two strokes.

[@lamo75425]

So basically keeping air filter clean will prevent valves from being to shim

[@Jacare1973]

Nice vid. At the end of the day how much did it cost to fix it back to running?

[@arturoalvarado6969]

Muy buen video..i love the crf 450 Saludos d honduras...

[@CarsnStuff]

soo awesome. I seriously get so intimidated with stuff like this. Like with car engines im fine. But when it comes to the transmission being inside with the engine its a whole different game.

[@CameronNiemela]

Dude thanks for watching! There's a ton of moving pieces but once you tear into them a few times it's not too difficult.

[@MotoMarv-Micahboy]

Mr Cameron the dirtbike surgeon

[@CameronNiemela]

I try to be:)

[@wadebenn4529]

Sick mate another build can’t wait 🤘👌

[@loganflorida462]

Counter balancer weight was barley on there lol. List of issues

[@p4pper256]

Cameron are there anymore videos of this bike? I seem to can only see 2 🤔

[@kweaver65]

Any tips for clean bolts? So many get stained

[@TPA_JW]

Try soaking them in some old gas for a bit, then use a brass brush on them. You can then always top it off with spraying them with some alum cleaner.

[@joztunes69]

WD40 can fix your stained bolts, and they will stay fresh and not get rusty

[@CameronNiemela]

I soak all my hardware in degreaser or solvent. That'll strip away all the dirt and grime.

[@tacticalmosquitoeater]

Naanak65 wire brush or wheel, wd40 and some CLR

[@endurotruckererniedesjardins]

Brake and parts cleaner them. If you want bling... pop into a truck stop and buy a polish wheel and jewelers rouge. Polish up the boltheads to a chrome finish

[@danieleross8776]

Great video man

[@CameronNiemela]

Thanks for checking it out!

[@sgreen7401]

Holy bolts n gears

[@CameronNiemela]

Yes indeed!

[@aleksanderkurilenko4588]

Nice job man How long this engine last? Is that worth to turn this bike in to dual sport or high maintenance will be a problem in the field away from the shop? Thnx

[@CameronNiemela]

There was no hour meter on this bike. These motors can last for dual sport though.

[@GoldensniperGaming]

Awesome video I love all the technical shots and explanations. You make it look so easy to work on a 4 stroke. I have a 17 ktm250sxf and will need to check valves soon.

[@CameronNiemela]

Thank you for checking out the video man! Best of luck.

[@kimbletrainer6058]

so if i grab the flywheel to see if there is any crank play up and down and side to side. will this give me an accurate read of the crank is okay? and can be used for the time being? obviously not new..

[@Dvniemela]

She'll buff

[@CameronNiemela]

Dvniemela 😬

[@deadlyvenom9069]

is this ze brothers???

[@Mr.EeToMyself]

Sorry to bother ya, But I have a crf450r that seizes up a few moments after start. The kicker locks up and I can rock it back and forth to free it up... only for it to start and seize again?

[@JoranPrins]

I see you have green gaskets, but are they put on by honda itself or are they aftermarket? like put on not by honda. Cuz i have a honda quad, and the guy i bought it from didn't know if it ever had a rebuilt, so if the green gaskets are aftermarket, it probably would have had an inspection inside the engine.

[@CameronNiemela]

OEM Honda gaskets are usually green.

[@michellatour150]

The clutch basket and inner hub are worn / notched.

[@CameronNiemela]

Well aware of that...

[@sergiocarlos1722]

the wear in the intake valve dont have any to see with the air filter . ... this wear is because the valve drive a high pressure at high rpm. think replace the intake for a valve high resistance valve like a titanium valve . remember this engines come with a two high pressure spring in a intake valves.... thanks bless

[@quurt-f6g]

Good work 👏

[@KHeidendal]

How much time did it take to rebuild that engine?

[@reidjordan8771]

could you tear apart a kx 65

[@juanapalomino1669]

3218624101gustavoadolfo moto.motoadolfomoyadolfoedsadedshoy

[@H8er-Maker]

Nice camera work

[@ДмитрийВоробьев-т3к]

a lot of small details are very easy to get confused

[@montymanmontyman9832]

Never seen a crf450 wt such a nice clutch basket

[@stevennancythompson3674]

This is an excellent video. I really like your style. I do have a couple of questions that I don't know who to ask for answers so I hope you can help. I have a 2019 CRF450L and would like to detune it a bit for adventure riding. I already have a Vortec ignition, a heavier flywheel and a Recluse clutch should arrive tomorrow. Does anyone make a milder cam and is there a gearset available with a higher fifth and sixth gear. I've ridden motorcycles for many years but am completely new to off road riding and I'm 75 years old. Thanks!

[@1keykneedeep]

Holy hell Cam. I mean FML on any engine issue. Wow is all I can say.

[@DzlJunkie]

What resources would I need to teach myself how to do this? I want to know how to rebuild my motor on my bike as well. She doesn't need a rebuild yet, but I want to be ready when she is. I'd love to chat sometime and pick your brain. Love the videos keep em coming!

[@CameronNiemela]

Thanks so much for checking out the video! I'd recommend getting a service manual and checking out as many videos as you have time for. And once you tear into your motor take lots of pictures or even film the teardown so you have something to refer to.

[@DzlJunkie]

Awesome! thanks for the info! I will do that.

[@lewisgilbert4769]

hi how did u know about fixing dirtbikes or get in to it did some one teach u or ... great vid as all ways

[@CameronNiemela]

I started working on bikes when I was 12 so most of it has come through experience. My family is pretty good with cars and that helps too. Thanks man!

[@user-sp8eb6iz7f]

How you feeling Cameron ??

[@emktm3482]

Hi, I'm looking for CRF 450 2010 on injection ? It is good bike ?

[@dustin9035]

Did the bike ever get an oil change

[@alexguerrero3675]

I got a ? I'm finishing up my 07 450r build I had head port and polished 1mm bigger exhaust valves stage 2 cam 13:5:1 wisco new crank what is the best way to break it in

[@mijosipek5052]

could you say whitch part is what(just for the main things) on some video for us new guys pls?

[@gzamzoum1539]

Cameron you're great, please translate to spanish!! Regards from Tucuman - Argentina 🇦🇷

[@jessarellanes6648]

good job

[@CameronNiemela]

Thank You!

[@paulmullins102]

thanks dude

[@cr250FoLife]

I keep having water accumulate in my crankcase breather hose on my 2014 crf450r. Any ideas? Thanks!

[@bronzenwoolsey7280]

Head gasket probably leaking

[@scotthoover6689]

Is there a rebuild video?

[@chainhaded]

hi ,,air filter and oil filter its the same as honda 450?

[@charlesbarbie17]

Im having trouble kick starting my crf 250r 2009. Takes around 20-30 kickstart. Any helpfull tips what will i do? Thanks mate.

[@CameronNiemela]

Valves are out of adjustment

[@dustin9035]

Did that ever get a transmission side oil change, damn, some of those parts looked grungy

[@sendmemes5474]

On Tyler Monagans washing a dirtbike video at 4:33 is your 250 if u haven't found it yet

[@CameronNiemela]

Oh nice I saw that haha

[@emillyandrade5048]

You até Very good in mad skils motocross.