Yamaha YFZ450R Top End Rebuild Part 2: Rebuild | Partzilla.com
ฝัง
- เผยแพร่เมื่อ 9 ก.ย. 2024
- Your 2009 Yamaha YFZ450R top end rebuild parts are here: bit.ly/yamaha-Y...
The top end rebuild on our 2009 Yamaha YFZ450R continues here in part two of our three part series. In this video, we start with the top end torn down and now we’re building it back up. John will show you how to position the piston rings correctly and then connecting the piston.
Once the piston is in place, we’ll install a new cylinder. Our original part was worn, so a new cylinder seemed like the best option. Then, we’ll work up the motor and install the head. That will include setting the cam timing on our YFX450R and getting the chain tensioner in place. Finally, we’ll bolt on the valve cover and replace the spark plug.
Missed part one? • Yamaha YFZ450R Top End...
Ready for part three? • Yamaha YFZ450R Top End...
Check out the playlist: • Yamaha YFZ450R Top End...
VIDEO HIGHLIGHTS:
Positioning piston rings - 3:00
Connecting the piston - 4:20
Installing rings - 5:00
Installing new cylinder - 8:00
Replacing chain guide - 9:40
Installing the head - 10:00
Setting cam timing - 12:00
Installing cams - 12:45
Installing the chain tensioner - 15:00
Installing new valve cover - 16:45
Replacing the spark plug - 18:00
Find thousands of Yamaha ATV parts here: www.partzilla....
Talk to us:
Twitter: / partzilla
Facebook: / partzilla
Instagram: / partzilla
In the video we’re working with a 2009 Yamaha YFZ450R, but you may have similar steps for your Yamaha ATV. If you’re not sure whether these steps apply to your machine, leave a comment and we’ll get back to you.
RELATED CONTENT:
YFZ450R Top End Rebuild PT1: Engine Teardown:
• Yamaha YFZ450R Top End...
YFZ450R clutch rebuild:
• YFZ450R Clutch Rebuild...
Yamaha YFZ450R Charging Problems:
• Yamaha ATV Electrical ...
Yamaha YFZ450R oil change:
• YFZ450R Oil Change | P...
Was wondering when you guys are gonna have a bottom end rebuild video? I have already rebuilt my top end from watching you guys video's! I learned alot from you guys and I plan on rebuilding my old engine completely. No transmission work if it's not needed
YOU ARE MY DREAM MECHANIC.HANDS DOWN...🔧
Keep them great videos coming👍🏽
You make it look so easy, I’m gonna give my engine overall
Thank you sir! I bought a brand new OEM cylinder, piston, and rings for my YFZ450 and they don't even tell you which ring is the top or the 2nd! Both are marked exactly the same! Thanks again for clearing that up for me ... much appreciated!
Thanks for the video!!
Very good 👌thanks I love you brother,💕💪
The best video in the world! Thank you!
Anti seize on a spark plug? That goes against every spark plug manufacturer's recommendations and is also not recommended in the Yamaha service manual.
Very informative video! Keep up the good work!!
Did I miss the part where valve lash is checked?? Or is that another charge so it wasn't done for a "top end" service??
What about a Yfz450 bottom end rebuild
Your videos make me wanna buy parts from y'all.
How come you didn’t check the ring gap? Also, why does Yamaha ask for the harder chrome ring as the second ring whereas my raptor manual said for it to the top ring?
Most top end kits come with the rings already gapped and for 2 most of the manuals give out faulty instructions everyone has come to find that out over the years
Why no mention of checking of ring gap?
Well. I installed my piston rings all wrong. It is still running fine though.
Is it supposed to be 14 pins in between the two top dots??
If you use a wiseco piston the two top rings swap im guessing because i couldn't fit the dark gray one in the top slot. Anyone else have that issue also???
So how long did it actually take to get the cylinder on the piston? I see looks edited and it is never that easy. It would be nice to see it all but for time wise I understand
It varies a bit by how easy everything goes together, it really doesn't take that long though. I don't think we timed it. Maybe 30 - 45 minutes?
Hello can u help me with rings position of Honda crf250r 2006 thanks
What size is the honing tool.
Hi good video:-) I have the same ATV some day the wheels blocked but it seems like nothing broke in the motor but I could not crank it there was to much compression. When I look at my Exhaust cam it seems like the tootwheel is turned on the axle when I time the motor the last lobe is more up then before have you seen that before?
best regards Michael
Never seen it before, but it sounds like a new cam is in order.
How do you tell the difference between compression stroke and the decompression stroke?
Your cam lobe position.
Alguien sabe para que sirven los dos orificios que están abajo de donde va el tensor encargué la misma pieza solo que está trae dos orificios abajo del tensor????
shavings in my oil filter so I disassembled the top end and saw that my crank is stiff so I will replace that and I was wondering if I should replace my oil pump too it’s a 2007 yfz450 and it has that oil squirt thing
Yess or just flush it out really good
Do I use the yamabond 4 on top end build
2005 450 not an r edition similar ?
Yess
What torque wrench do you have?
Subtítulos a español por favor
Estamos trabajando en subtítulos en español. Próximamente.
@@PartzillaParts ojalá sea pronto grasias
Anything on the oil update/squirted and oil pump for 04-06 models?
this machine is post-oil mod. I would recommend it
Subtítulos spanish
Yamahayfz450wontstartafternewheadgasket
Half ass job did not check ring end gap !