WR450 Engine Differences Throughout the Years
Posted June 25, 2009 - 12:33 PM
Posted June 25, 2009 - 12:41 PM
Posted June 25, 2009 - 04:17 PM
Posted June 25, 2009 - 06:55 PM
But the +06 is still a complete dry sump, unlike the CRFs that have separated oiling systems?
Yes but there will likely be an "interchangeability issue" if you try to put a 06' or prior motor into a 07' or newer chassis and vice versa to a certain degree...
There's differences in the left side case cover to on the 07' and newer... I think it's quite bit different than earlier models.????
What are you looking to do?
Posted June 26, 2009 - 07:08 AM
What I am trying to do now is gather some information on changablility issues purely related to engine internals and cases through out the years. We have been running a Yamaha R6 engine in the years past, but the series requires us to be restricted to a 20mm air inlet, so we are looking to change over to a smaller engine for the simplicity and lighter weight. We do all of our own custom fuel injection and exhaust, and in this case, oil resivoir. I am more familar with Wr's since I have a WR400, but we have to have electric start, so we are looking at WR450, CRF450X, and possible KTM450 or 525.
Posted June 26, 2009 - 08:14 AM
Posted July 16, 2009 - 03:06 AM
but the 2005 (and I think onwards) had it 12.3 / 1 to try to smooth out the power.
A friend of mine has a 2003 WR 450, I have 2005. We haven't tried each others bikes yet, but I can confirm that he complains a lot that his bike is lacking torque (compared to his Honda XR 600 1997 model), but I find mine just perfect.