Name: CRF300L Big Bore Installed with Ported Head
Uploaded: 2023-03-31T13:30:05+00:00
Duration: 18 min 7 s
Description: Installing the Big Bore Kit on the CRF300L or XR301 if you will. This take the engine size from 300cc to 301cc!!! JK, kinda. The stock real size is 286cc and this 2mm bore brings it up to 301cc. May n

1 year ago

144

Installing the Big Bore Kit on the CRF300L or XR301 if you will. This take the engine size from 300cc to 301cc!!! JK, kinda. The stock real size is 286cc and this 2mm bore brings it up to 301cc. May not be a huge bore and kit's do exist that go bigger. But Ari Henning worked with JE pistons on this kit and this is the size you want to go if you want to maintain reliability. Larger kits will end up with lots of slap in very little time. This kit also takes the compresion from 10.7:1 to 11.5:1 which is also a balance of power and reliability. Could go higher but Ari says this is the sweet spot. But wait there's more! Because I also have a Race Tech CNC ported head with Takegawa cams too. ALL THE POWER HAHA or at least a bit more than before.

OEM Parts https://imp.i104546.net/Y9gKxm
Big Bore Kit, email Ari Henning ari.r.henning@gmail.com or Instagram @arihenning211
Ported Head https://racetech.com/page/id/155
Cams https://japan.webike.net/products/24845492.html
Assembly Lube https://imp.i104546.net/rQnW3Q

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0:00 Intro
0:56 Piston Install
4:07 Piston Rings
7:38 Cylinder Install
9:04 Head Install
12:21 Cam Install
16:15 Finishing up
17:17 It's Done

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