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  2. Valve seals shouldnt see any pressure because the valves are closed and should hold way more compression than that engine can build. Valve seals are on the stem above the seats.
  3. Bugs https://www.ebay.com/itm/Maxxis-Mudbug-Front-26-10-00-12-6-Ply-ATV-Tire-TM16675000/353096936879?epid=171253144&hash=item523637adaf:g:7zQAAOSw6mZe2Q47
  4. The auto decompression actually works on engine rpm. So how it works is the mechanism spins and catches on the plunger that the spring keeps tension on. Holding on a tab on one of the rocker arms and pushing a valve slightly open. Once the engine warms up the rpm raises and the oil pressure build and it causes the outer part to slide down off the plunger and lets the valves function like normal from then on.
  5. Dang! What do they run on ebay up there? https://www.ebay.com/itm/Four-4-Kenda-Executioner-ATV-Tires-Set-2-Front-26x10-12-2-Rear-26x10-12-K538/141722865639?hash=item20ff574fe7:g:sO0AAOSwQYZWymQF
  6. @SlammedRanger it turns over like the spark plugs is out. Free spins.
  7. @ChadD buddy call me.. 780-265-5862
  8. @SlammedRanger you 100% correct but I promise you I can see the camshaft sprocket and the timing chain spinning. And yes the bolts are in the cam and going through the sprocket but the cam itself is not spinning. I just assumed that the decompression mechanism worked that way until it built enough oil pressure to engage.
  9. The auto decompression has no control over the cam spinning. If the cam didnt spin it would have more compression. Honestly im shocked it turns over. If all the valves stay closed all the time it would just be a pressure chamber. I guess it must be leaking back through the rings. Which is a whole new concern in itself.
  10. Welcome to the site! @_Wilson_™ is correct. Lots of 450 owners joining up! Glad u found us. Any questions, just have a look thru the threads & post away! Always someone here to help out!
  11. Ok. So the cam sprocket and crank sprocket are attatched togeather by a chain. For the bottom end to crank over and cam to not turn your chain either isnt on the crank sprocket properly. It can go right next to the splines on the main crank drive sprocket. Or the cam splines would have to be stripped off and the sprocket and hub are spinning on the cam.
  12. @SlammedRanger @Wheeler it's not letting me upload a mp4 video.
  13. & YES eBay cams are garbage. Webcamshafts are top notch!
  14. NO! Don’t check any passages my friend! IF ur cam isn’t turning but cam chain is, u have to pull the cover back off & figure that shiiaat out!
  15. @SlammedRanger when I say the cam doesn't turn I am saying that the cam sits and all the valves are closed but the timing chain and sprocket are spinning but the cam itself is not. Beginning to think that this ebay cam was a bad purchase. I will check the passages going up to the top of the motor.
  16. welcome to ATVH ... seems to be a lot of ES guys joining ...congrats on the (new to you) purchase, be sure to post us pics.
  17. Has to be. But it would never run that way. Im confused!
  18. Ur cam gear isn’t tight on the cam!! That’s why cam not turning!!
  19. My man.... IF UR CAM IS NOT TURNING U HAVE SERIOUS ISSUES
  20. What im telling you bud is thats not possible! If that cam doesnt turn in time with the crank this is an interference engine. Your valves are going to bend when they contact the piston. Period. No way around it.
  21. Hey guys. Picked up a used Foreman 450 ES recently and looking forward to learning more about it and ATVs in general.
  22. @SlammedRanger when I say the cam doesn't turn I am saying that the cam sits and all the valves are closed but the timing chain and sprocket are spinning but the cam itself is not. Beginning to think that this ebay cam was a bad purchase. I will check the passages going up to the top of the motor.
  23. @jeepwm69 that’s cheapest place. One place was $220 a tire plus install. Other place $719 installed.
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