Two Stroke Top End | Simple Doesn’t Mean Easy
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Күн бұрынMy 2018 Sherco 300 two stroke had close to 200 hours on it, and it was time for a top end rebuild. I grabbed a rebuild kit from Sherco a year or two ago in hopes of doing this earlier, but that just didn’t happen. Once we got the top end of the engine apart, we started to find some wear and tear from usage and neglect. What should have been a simple piston, rings, bearings, and gaskets swap out turned into a full blown power valve rebuild. After the power valve function was figured out, and the new parts came in, I was able to get the #twostroke back together.
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Huge thanks to Sherco of North Texas and @highlandcycles for their help during this rebuild. I started to get overwhelmed when I realized the power valve actuator was as broken as it was. Having an entire week off of work was also a huge help, as I didn’t feel pressure to have the Sherco back together as soon as possible.
If you have any lessons learned during your dirt bike maintenance, leave them in the comments so we can all get a little bit better.
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@dragoslavpetrovic3616 Жыл бұрын
It is a great feeling when you fix your bike.
@SeatTime Жыл бұрын
My heart rate was through the roof when I was trying to start it. Now that I’ve rode it a few times, it feels AWESOME!!!
@highlandcycles Жыл бұрын
Love it man. Thanks for having me on.
@SeatTime Жыл бұрын
Haha, you’re advice was too good. It had to go front and center!!!
@rafy600 Жыл бұрын
(Ricky) from Sherco North Texas is the best. I get my bikes and parts from those guys. They love the sport as much as whe do. 🤙
@SeatTime Жыл бұрын
Agreed. Ricky was a huge help during this rebuild, but also long before.
@madbazRC 23 күн бұрын
I think i have a power valve issue on my sons sx65 so looking forward/nervous about getting sorted. Great video
@SeatTime 23 күн бұрын
Thanks! Those 65’s are simple, but finicky. We did a full top end on Liam’s 65. He actually did most of the work.
@michaelvandesluis7581 Жыл бұрын
Sweet experience! I'm about to do my first top end!
@SeatTime Жыл бұрын
Good luck, ask questions, and move slow.
@sunbud63 Жыл бұрын
Great video. Loved the way you presented it...speed through the mundane sections and explain the pertinent sections. The video kept me entertained and watching til the end
@SeatTime Жыл бұрын
Hell Yeah, thanks 🤘🏻🤙🏻. I wanted to try a few different editing techniques since I had so much different aspect media.
@csisk Жыл бұрын
Solid work.
@SeatTime Жыл бұрын
Thanks!
@200xcBruce Жыл бұрын
As a regular wrencher I cannot stand to see a top end service before all the motor is clean and shiny, so no dirt gets into anything. Try a cleaner burning oil Brian. No carbon creating oil.
@SeatTime Жыл бұрын
Great points Bruce! I thought about that many times while working in and around the engine. When it comes to a “cleaner burning oil”, how do we know it’s cleaner burning?!?! I use Maxima, which has a history of great performance, but do we know if it’s a “not good” burning oil? Keep the feedback coming!!!
@200xcBruce Жыл бұрын
@@SeatTime okay low flash point oils and synthetics. Myself I use Amsoil Interceptor and have zero carbon build up on the PV for instance. Morgan did a video on oils to.
@SeatTime Жыл бұрын
@@200xcBruce I just watched his video last night and the mental connection has been made now that you said "low flash point"! I'll have to look up the flashpoint of the Maxima K2.
@SeatTime Жыл бұрын
@@200xcBruce Maxima K2 Flash Point 252°F / 122°C (COC) , it's also a synthetic
@SeatTime Жыл бұрын
@@200xcBruce Amsoil Interceptor Flash Point 183°F / 84°C (ASTM D-92), WOW, A LOT lower!!!!!
@TeamStepBrothers Жыл бұрын
A buddy of mine dropped a circuit in the bottom of mine when he was helping me once. He swore it fell in the floor even though we couldn’t find it. Well, when the bike was back together and we started it for the first time, we unfortunately found it 😢
@SeatTime Жыл бұрын
OHHHHH NOOOOOO! How much of that bottom end rebuild did he help pay for?
@TeamStepBrothers Жыл бұрын
That 3 dollar circlip cost him 500 bucks. Luckily he didn’t put up much of a fight about it, cause I was ready to 😂
@TeamStepBrothers Жыл бұрын
@@SeatTime and I don’t think it dropped in the cylinder, I think it somehow got in one of the coolant water jacks because it got wedged between the rings and cylinder, bottom end was still good. But cylinder needed to be sent off to millennium lol
@SeatTime Жыл бұрын
@@TeamStepBrothers 😮BOOOOOO.....
@ShawnBlais Жыл бұрын
Wow, seems a lot more hassle than a KTM top
@SeatTime Жыл бұрын
I think it seems like that because of the way the Power Valve and Actuator work. In 2019, they went to a fully electric power valve, and it seems a bit simpler.
@ShawnBlais Жыл бұрын
@@SeatTime Way to go figuring it all out! Still working up the guts to do my 300
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