Increasing Engine Oil Capacity - grayracer513?
Posted October 17, 2008 - 07:19 PM
I have a DS'd '05 WR450 and plan to do some long trips with it in the future (1000+ miles). Trips that long kind of pose a problem, because it seems the consensus is that oil should be changed every 500-700 miles at the latest with this type of riding. In the interest of stretching those intervals a bit, I'd like to increase the oil capacity of the bike.
I read a post by Grayracer a while back mentioning that you could safely run 1.5 liters of oil (1.2L is specified) in a steel framed WR with no problems and I intend to test that theory. However, I'd like to see if i can increase it a bit more than that if possible via adding an auxilliary oil tank. I'd be extremely happy if I was able to get 2.0L of oil capacity in the bike.
Have any of you experimented with adding an auxilliary oil tank to your WR? I've seen some posts where Indy added an oil cooler to his bike, but it doesn't really add that much oil (6 oz if I remember right).
Am I right in assuming that if I can increase the oil capacity, then I can increase my oil-change intervals as well? Can anyone see problems with increasing the oil capacity that much?
Thanks in advance
EDIT: I'm talking about adding an auxilliary oil tank to the system, not just dumping 2 liters of oil in at the next oil change. I didn't make myself very clear in my description, evidently.
Posted October 17, 2008 - 08:00 PM
Posted October 18, 2008 - 05:05 AM
Am I right in thinking that there is a direct relationship between oil capacity and time between oil changes?
Posted October 18, 2008 - 05:56 AM
It's a totally differant story on your bike . all you have to do is keep your tank very low like make it out of a skid plate the make a tank so that the pressure line hooks to the bottom or lower on the tank and hook the return line right on the top that way it will not siphon back into the motor .
I did make my tank But I have to mod my case to feed it oil . I may do that on this winter's taer down .
here's mine in the early stages of welding it.
Posted October 18, 2008 - 06:16 AM
I'm considering making a 500cc tank to put right in front of the base of the cylinder or possibly just behind the right radiator. One behind the radiator might be too high, however. Maybe some of the experts here could tell me if that's true or not. I'll keep looking into this. Thanks for your input.
Posted October 18, 2008 - 08:20 AM
Posted October 18, 2008 - 08:21 AM
Adding more oil will extend your OCI time, but not on a strictly linear basis, necessarily (doubling the oil won't double the OCI).
Posted October 20, 2008 - 07:41 AM
If there is too much oil, it will just flow out the cam-cover breather hose.
If you want to add any more capacity, then you'll have go with the external tank/oil cooler route or a giant clutch cover.
Posted October 20, 2008 - 07:55 AM
See my post just above yours.
If you want to add any more capacity, then you'll have go with ... a giant clutch cover.
Posted October 20, 2008 - 10:03 AM
What would be a good volume to shoot for? Should I be satisfied with the 1.5L I can get without building anything? I plan to do long trips on this bike.
I did some investigation this weekend and found that I can fit an additional .5L behind the left radiator with my 6.6 gal tank on (that really limits where I can put stuff). It's going to take a ton of work, however, so I'm wondering if 1.5L should be fine.
Posted October 20, 2008 - 11:55 PM
Posted October 21, 2008 - 06:08 AM
That is really not as impractical as some might immediately think, but you do want to be sure the engine can be removed when you're done. Adding to the bottom of the down tube, expanding into the area between the cradle tubes would be the best approach.
Why dont you just cut the frame and make the "tank" area bigger?
Posted October 21, 2008 - 06:15 AM
FYI you can do long rides on this bike...you will just need to change the oil about every 300 miles. also make sure you gear the bike for the long straight aways. i had over 11k miles on my wr before i sold it and it was rock solid never had an issue.