Drilling the frame?

2 replies to this topic
  • XriderR00

Posted October 30, 2005 - 01:45 PM


I'm custom making my 400 to have a 450 tank fit it and i'm wondering if its safe to drill a quarter inch hole through the frame. It's just above the cylinder head where i'd be drilling, and then i'd just through bolt it. It'd be about 3 inches to drill through, but is this OK to do? Is there oil running through the frame?


Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • DaveJ

Posted October 30, 2005 - 02:11 PM


There is oil in the frame, so it's best to make a solid rod in which both ends are tapped. This way you can maintain the oil tank and use the original bolts with the 450 tank. I have photos to show how this is done if you want the details.

  • XriderR00

Posted October 30, 2005 - 03:20 PM


Drilled it anyway and didn't have any problems. Guess I got lucky, now all I need are the plastics and graphics and I can pass my bike off as a 450!

Related Content


05 yz450f not fast enough by RedeyeYZ

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  38 replies

Chubby dad, looking at bikes , First trip to the orange/black forum ! by Slow_ride

Dirt Bike   Make / Model Specific   KTM   250-530 EXC/MXC/SXC/XC-W/XCR-W (4-Strokes)
  • Hot  28 replies

James Stewart back on a YZ450F by YamaLink

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies

Wilson the Blue Privateer by jetfuel

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  50 replies
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info

  • 0 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.