Just want to add to those out there wanting to do this type of work, correctly. Go to Tokyo Offroad videos to get the right information. In this video, there was no deglazing of the cylinder, when tightening the cylinder, at least tighten in a cross pattern, not one side and then the other. Also, do not put silicone on the power valve rubber seal and use a torque wrench on all bolts you can access. Last, the information of the day provided by the chubby Einstein guy, "if there seems to be something catastrophically wrong with the bike, just stop riding it" duh...
@dirtbiketv12 жыл бұрын
I couldn't agree more --
@barkeep252 жыл бұрын
You must be really popular at parties.....
@bloomerb41622 жыл бұрын
Why is it a bad idea to put sealant on the PV rubber seal? I put yamabond on mine.
@spencerclark22692 жыл бұрын
Fun video. Realistic job
@Fmontes2 жыл бұрын
Can't believe how young Jay looks in this video.
@westcoastfrisco2 жыл бұрын
💀
@cooliomilkman Жыл бұрын
My thoughts exactly
@TheCarlejoseph2 жыл бұрын
Great video. Thanks for the tips.
@Bubbleuprubberdown2 жыл бұрын
You can anneal copper washers and get two or three uses out of them.
@jjjjjjjjrifufjssjosskenf2 жыл бұрын
Or just buy new ones, they are cheap
@rene58532 жыл бұрын
Putting a new piston makes you look younger like brand new
@bloomerb41622 жыл бұрын
Why would you put a c size piston in it, if it had 180 psi of compression with the 100 hrs piston?
@dirtbiketv12 жыл бұрын
Email Jay directly with any questions. Contact info in About tab.
@estebans64722 жыл бұрын
2 strokiiessss
@thewangster1232 жыл бұрын
Hey guys, what premix ratio is Cole running in the 300? Cheers
@colechristensen252 жыл бұрын
Amsoil Saber 80:1
@chrislalonde81802 жыл бұрын
You guys didn't deglaze the cylinder??
@moorefab8192 Жыл бұрын
Anyone know if you can use a 2004 and newer piston for a 300exc in a 1999? And if not, why not, what’s different? The newer piston kits are half the price than I’m seeing for the 99-03
@elkku2934 Жыл бұрын
Do you know if Pro X pistons are any good?
@wilderenduro70962 жыл бұрын
Wouldnt it be better to go by compression instead of every 100 hours?
@colechristensen252 жыл бұрын
Compression test was 180psi before. 185psi after. Very little change. We don’t wait till there’s a drop in compression. Just hourly intervals.
@bloomerb41622 жыл бұрын
Wow that's incredible with 100 hrs.
@HuntertheHoleshotKing2 жыл бұрын
What 2 stroke oil did he run for those 100 hours and what ratio?
@colechristensen252 жыл бұрын
Amsoil Saber 80:1
@robertococcia98152 жыл бұрын
With your old piston another 50 hours of use
@rdgsupafli2 жыл бұрын
Is it normal to have that wear inside the cylinder bore?
@dirtbiketv12 жыл бұрын
You can email Jay directly with any questions - contact info in About tab.
@jakewood43292 жыл бұрын
Can't believe u guys are doing a video on how to do new top end piston change an don't have torch wrench !???....🤬🙃😴
@colechristensen252 жыл бұрын
Forgive us
@chadrides9142 жыл бұрын
Torch wrench? What did you expect them to have to heat up the bolts or cut metal?
@jakewood43292 жыл бұрын
Haha all good I was just surprised u guys did without one
@davidalexandru9176 Жыл бұрын
How do i choose the piston corect size?
@dirtbiketv1 Жыл бұрын
People can set sag how they want but anyone worried about a 2/3mm hole in the fender has their priorities mixed up.
@ducaduke Жыл бұрын
Those 300s go for 300+ hrs hard riding on the stock Piston
@shannonscott57882 жыл бұрын
Only if it could really be done in 23 minutes….every year, every year until you either get tired of doing it or can’t afford a top end plus labor…..🤔😬
@SpeedDemonExpress5 ай бұрын
Not smart putting in a C piston without measuring the piston to bore clearance.
@fishtailfuture Жыл бұрын
Every video I see like this with guys going 80 hours. 100 hours I just like to point out that as this gentleman said. Next piston he's gonna have to re-plate. And I know guys that will put 100 or 120 hours on a piston and replaced their cylinder every two or three pistons. And if you're like me and ride 4050 or even 60 hours in one season. Change of piston. Even if we only did 40 hours. Because 80 is too much and if you go longer the next year and you don't replace it, you're hitting that 100 mark. You will be replacing your cylinder as well. What you can get out of a motor is not what you should do even if you're a woods rider. You start to see blowby and the scuffing in this video at around 60 hours. Almost every single piston. If you are a slow trailes rider, I would replace it before then. A piston that is changed often the cylinder can last seven or even eight pistons. Which is about 340 hours versus 240 hours if you run it 120 hours each time.
@jesserichter75602 жыл бұрын
I won't buy another vertex piston one I bought wrist pin wouldn't fit thru bad machine work