Enjoyed your video and I'm sure it will help people. It shows them to have confidence to dive in and do it! Couple things: First, any time you bore or even just hone a cylinder, wipe it out with auto transmission fluid prior to assembly. You will be amazed what comes off when you thought the surface was clean. Then, you didn't show checking the ring gaps. Put the rings into the cylinder, push in with the piston to their various working heights and measure the gap per specifications. Air cooled like an XR can run hot sometimes, and you don't want this gap to go to zero. Don't assume the gap is right, please check it. PS: I find it a lot easier to just remove the engine from the frame first. Working on the bench is much easier, and allows you to clean all around, replace seals, etc. Then you can assemble the top end without worrying about some dirt from the frame tube falling in. One piece of dirt can ruin everything!
Some big mistakes where made by the machine shop! Part3 is comming soon i went to a other machine shop so i will be uploading it soon. Thanks for your message!
Enjoyed your video and I'm sure it will help people. It shows them to have confidence to dive in and do it! Couple things: First, any time you bore or even just hone a cylinder, wipe it out with auto transmission fluid prior to assembly. You will be amazed what comes off when you thought the surface was clean. Then, you didn't show checking the ring gaps. Put the rings into the cylinder, push in with the piston to their various working heights and measure the gap per specifications. Air cooled like an XR can run hot sometimes, and you don't want this gap to go to zero. Don't assume the gap is right, please check it. PS: I find it a lot easier to just remove the engine from the frame first. Working on the bench is much easier, and allows you to clean all around, replace seals, etc. Then you can assemble the top end without worrying about some dirt from the frame tube falling in. One piece of dirt can ruin everything!
I agree with that man thanks for your comment, i did some of those things of camera because when i show every thing than the video seems boring to me.
Nice build man
Thank you 🙌
Good one bro.
Thanks man!
Yes g
🙌
Good caption bro, watcha Englisch ;)
Here
I have a question could i put the 140cc head on a 125cc pit bike engine?
I think its not possible because the gaskets wont line up. Maybe if you buy a 140 cylinder and piston
@@Builditathome-Restoration so i can big bore a 125cc to a 140cc but the 140cc has a oil cooler and the 125cc dont so will i need to put in a oil pump
@@maxhicks6743 a oil cooler fits on 125cc and on 140cc
@@Builditathome-Restoration so i could just put the oil cooler straight on and have no issues
@@maxhicks6743 it kind of depends on the model and brand man hard to say
What year is the bike?
Year 2000
Where’s part 3?!
Some big mistakes where made by the machine shop! Part3 is comming soon i went to a other machine shop so i will be uploading it soon. Thanks for your message!
Part 3 is online now👍