How to Build a Yamaha YFZ450R Engine | 2009 - 2024 Full Build Step by Step
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- Опубликовано: 24 июл 2024
- How to Build a Yamaha YFZ450R Engine | 2009 - 2024 Full Build Step by Step
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CHAPTERS
0:00 - INTRO
2:03 - INSTALLING THE CASE BEARINGS
5:52 - INSTALLING ALL THE BEARING RETAINER CLIPS
11:49 - INSTALLING THE PUSH LEVER BEARING AND SEAL AND CIRCLIP
12:59 - INSTALLING THE OIL PUMP STRAINER
15:36 - INSTALLING THE TRANSMISSION
19:08 - INSTALLING THE CRANKSHAFT
19:28 - APPLYING YAMABOND 4 TO THE CASE HALF
23:29 - ASSEMBLING THE CASE HALF'S
29:06 - INSTALLING THE PUSH LEVER ASSEMBLY
30:46 - INSTALLING THE COUNTER SHAFT AND SHIFT LEVER SEALS
32:02 - INSTALLING THE COUNTER BALANCER
32:35 - CLUTCH SIDE GEAR ASSEMBLIES INSTALLATION
33:13 - INSTALLING THE PRIMARY DRIVE GEARS
33:29 - INSTALLING THE COUNTER BALANCER GEAR
36:23 - INSTALLING THE SHIFT LEVER ASSEMBLY
39:34 - INSTALLING THE OIL PUMP
41:46 - INSTALLING THE CLUTCH ASSEMBLY
49:14 - INSTALLING THE TIMING CHAIN AND GUIDE
50:47 - INSTALLING THE FLYWHEEL
52:18 - INSTALLING THE IDLER GEAR AND DAMPENER
53:09 - INSTALLING THE FLYWHEEL SIDE CASE COVER
57:10 - INSTALLING THE CLUTCH SIDE CASE COVER
1:01:31 - INSTALLING THE STARTER
1:02:12 - INSTALLING THE CIRCLIP AND RINGS ON THE PISTON
1:05:22 - INSTALLING THE PISTON ON THE ROD
1:06:38 - INSTALLING THE CYLINDER
1:10:22 - INSTALLING THE CYLINDER HEAD
1:12:51 - TORQUING THE CYLINDER HEAD BOLTS
1:17:17 - INSTALLING THE CAMS AND TIMING THE ENGINE
1:18:47 - INSTALLING THE CAM CAPS
1:20:32 - INSTALLING THE CAM CHAIN TENSIONER
1:23:46 - INSTALLING THE VALVE COVER
1:24:58 - INSTALLING THE INTAKE BOOT
1:27:02 - THE FINAL TOUCHES
1:28:37 - OUTRO
what's up everyone
This will be the most powerful YFZ450R engine I have ever built. Follow along as I go in depth with the complete rebuild process I hope you guys enjoy this one.
THANKS FOR WATCHING!
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MY RIDES
2014 YAMAHA YFZ450R(PRACTICE QUAD)
2020 BLACKED OUT YAMAHA YFZ450R(SOLD)
2021 BLUED OUT YAMAHA YFZ450R (RAFFLED)
2018 CAN AM RENEGADE 1000XXC (RAFFLED)
2023 YFZ450R BLACKEDOUT LIVES AGAIN
2018 YFZ450R PRACTICE QUAD REBUILD
MY FILMING GEAR
2 HERO 10
1 HERO 11
DJI MINI 3 PRO
#yamaha #yfz450r #engine #rebuild #howto #tipsandtricks #4stroke #pistons #cases #gaskets #crankshaft #450 #cc 
Спорт
absolutely love your video i am rebuilding a wr450f 2003 love these bikes thanks Mel from UK
Thank you. Good luck with your build
Epic video! Thank you
Thanks for watching
🔥🔥🔥 video thank you for sharing your knowledge and trying to help the quad community
Anytime thanks for watching
Hell yeah! Super helpful. Looking at doing a similar build. Thank you!
Glad to hear it thank you
great vid!
Thank you
Awesome!!
Thank you
Awesome video and very helpful thank you
Thank you for watching
best one yet
Thank you
FIRST! 👍 congrats on the fresh build, looks great man
nice solid build!
Thanks man
Awesome vid makes me want to build a Yfz
Thank you
thank you so much you made this process easy. I am more confident when knowing everything I need to know is easily accessible in one video.
Anytime thank you
Thanks for the video bro really helpful. One thing i need help with, the shim sizes you use for hot cam stage 2 if you have. Or maybe the specs. Thanks in advance brother
So the best thing ti do is grab the hot cams shim kit then just check the valve clearances and adjust accordingly. A good micrometer is a must have and there are websites online that can do the math for you to find the correct shim size.
Can you show how to do a leak down test on this 450r
Ill try and make a video soon on that.
@@ononewheel7 nice
Awesome video, whats the benefit on doing the speed semsor delete
I run a race cut harness so i actually don’t have the connection for that along with some other stuff i eliminate. As far as the machine goes i don’t think you gain anything w the delete.
Also I trust you.
Thanks 😎
Great video! I picked up a 2010 Yfz450r and the engine was in boxes all apart. The buckets that hold the cam shims were all separated. Any idea what the stock shims would be for intake and exhaust?
Thanks man. You would really need to assemble it on a bench then bench shim it to see where it’s at then adjust as needed.
@@ononewheel7 that’s what I was thinking. Figured it was worth a try to ask. Thanks again for the awesome video, helped me out a lot!!👍👍
Would you be able to tell me how to verify oil pressure/feed going to the top end on these? I just did a full rebuild and want to make sure as the oil pump looks a bit worn (new one ordered) should I just run it for a minute and check if the cams are soaked popping the cover off?
Remove the valve cover and pull the spark plug wire and turn it over and check for oil coming out on the top end
@ononewheel7 should there be alot coming out or just a dribble from the top? I'm not sure if my starter is spinning it fast enough to pump all the way up to the head.
It should be a decent stream of oil
@ononewheel7 I guess there's a check bolt on the backside of on the cylinder #8 bolt near the intake boot. Once started it streams out of there pretty good. Thank you again for your videos and replies. Thanks to you I feel like I know these motors in and out now😀
where can i get your torque wrench?
btw epic video :)
So my 1/4” one is a huskey (home depot) then my 3/8” one is a Kobalt (Lowes) i actually just replaced them both today with a new 3/8” digital one from lowes a kobalt and it goes from 5 ft lbs - 100 ft lbs it was 176.00 which i don’t think is horrible considering it will replace my previous two. I am excited to start using it. Thank you man put a lot of work in this one glad you liked it.
Great video!! Could you rebuild my motor ?
I do build engines for people on the side email me if your serious.
🤩🤩🤩🤩👍👍👍👍👍👍👍👍👍👍
Thanks for watching
hello, I have a problem with yfz450r.
Currently I have sharp camshaft and an hc piston.
The engine has no strength to turn, there is too much compression.
Valve clearances are 0.20 exhaust and 0.10 intake
After blocking the decompressor, it turns the same, and he sees a defect in it.
Is it possible that the valve is not extending enough? how to adjust it and is it possible?
You need to double check your timing. You need to set top dead center on the compression stroke this is when the piston is traveling up when turning the engine over by hand counter clockwise. Your cams may be 180 degrees out of time. Check that and let me know.
@@ononewheel7 So here's how: I checked the timing three times and it's OK each time. Turning the engine with a socket wrench is no harder than in other engines. The problem occurs only when trying to start it with the starter - before the TDC it slows down a lot during the compression stroke and as soon as it passes it accelerates and then slows down again. One person suggested setting the valve clearances tighter (0.15 exhaust), (0.05 intake) and setting the decompression clearance, whatever that means.
@QuadGarageATV you can’t really know by turning it over by hand its normally hard as it builds compression. How old is the battery and starter? One or both could be weak. If you have a compression tester you could check compression. And the decompression spring is intact right. I run 14:1 compression and mine starts fine .
I don’t think changing valve clearances will change anything. If you go tighter it will make it harder to start. Looser won’t make too much of a difference except for some valve noise.
@@ononewheel7 Hi! I dealt with the problem of difficult starting and basically the inability to start. It turned out that the error was in the rollers made by the company. The decompressor pin did not extend as much as it should, I put a different exhaust shaft and everything returned to normal. The exhaust shaft went for repairs where they previously wanted money for supposedly adjusting the decompressor clearance lol! Thank you for your willingness to help, sorry for my English but I use a translator :)
How much hp???
Should be mid 50s hopefully i can get it dynoed in the summer
Yea it should be around there its a good setup