426 oil pressure psi??

1 reply to this topic
  • skydawn19

Posted April 17, 2006 - 07:23 PM


I have a 2001 426 that is over-bored to a 450.

I just replaced my oil pump, and am completely confused about what psi the oil pressure should be at.

It shows:
15 with the choke (cold)
5-8 at idle (warm)
15-20 when it's revved

I know that 450's are in the 50-60 psi range, but I think the 426 should be lower. Is that right? Does the over-bore make any difference?

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

Posted April 17, 2006 - 11:10 PM


being bored over should not make much of a diff. your oil pressure is built from the pump and how strong your main bearings are. I dont know why the 426 and the 450 would be so different in pressure but it sounds worth looking into.

Related Content


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.