Finally I have the big bore CRF70 motor assembly done! I’ll show you step by step how we took this HORRIBLE CRF70 motor and rebuilt it as a beautiful 108cc big bore motor. If you have never built a motor before, this video will show you every step. I even cover some things you won’t find in the Honda Service Manual. Hope you enjoy it and feel free to like the video and, if you want to follow the rest of the build, become a channel follower! Thanks for watching!

★SPONSORS and FRIENDS
Special Thanks to: www.TBoltUSA.com
Houston Vapor Blasting: www.houstonvaporblasting.com

★TIMESTAMPS
0:00 Intro
3:08 Install Guide Sprocket
3:35 Install Crankshaft
3:46 Install Transmission
4:10 Install Kickstart Spindle
4:23 Check Transmission Function
4:34 Mating Crankcase Halves
6:06 Install Shift Drum Bolt
6:24 Install Cam Chain
6:32 Install Cam Chain Tensioner Arm
6:44 Install Cam Chain Tensioner Assembly
7:42 If You Remove the Tensioner Seal Instead of the Oil Drain…
8:12 Install Stator
9:55 Stator Assembly Replacement
10:31 Install Flywheel
11:16 Install Kickstart Return
12:01 3 Step to Ensure Good Gearshifting Action
14:22 Install Oil Pump
14:53 Install Clutch Assembly
16:24 Install Oil Strainer
16:30 Install Right Crankcase Cover
17:05 Install Piston
17:37 Install Cylinder
18:19 Install Cylinder Head
21:07 How to Set Timing
22:09 Install Left Crankcase Cover
22:20 THANKS FOR WATCHING!

★AFFILIATE LINKS (I MAY MAKE A COMMISSION FROM SALES GENERATED VIA THESE LINKS)
Products Used
Assembly Grease: https://amzn.to/3wzQUi7
Assembly Lube: https://amzn.to/39O4gxo
Anti Seize: https://amzn.to/39O4JQa
Flywheel Holder: https://amzn.to/39LxxbU
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Hook and Pick Set (Best $10 I Ever Spent): https://amzn.to/3rJ50Lj
Socket Phillip: https://amzn.to/3ceGomV
Clutch Lock Nut Tool: https://amzn.to/3oDVt9t

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Camera – GoPro Hero 9: https://amzn.to/2O96Lmq
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★NON-AFFILIATE LINKS (I DO NOT MAKE A COMMISSION FROM SALES GENERATED VIA THESE LINKS)
Products Used
Stator Replacement: https://tboltusa.com/store/ignition-s...
Big Bore (108cc) Engine Kit: https://tboltusa.com/store/tbparts-ro...
High Volume Oil Pump: https://tboltusa.com/store/tbparts-hi...
Impact Driver: https://tboltusa.com/store/38-impact-...