Hi guys,
So, background:
2015 rc390, new to me at 12k kms (Canadian) last winter.
Then proceeded to build it into a race/track bike with the following:
- PCV (chad map)
- akra flash
- shift kit
- custom exhaust
- all the other usual stuff not relevant for this discussion (see pic)
Last weekend I had it out for its inaugural run on the track, a 3 day weekend of testing and tuning.
Few key notes:
- Running 15w50 Motul 300v (for those who don't know, 300v is green)
- Distilled water with MoCool (red), no overflow
After two days and a low-side I and the RC dodged unscathed (thanks T-rex and Tyga sliders), I had a serious engine problem on day 3. I was coming out of a hairpin and on the throttle when I had a massive power loss and a low oil pressure light. I immediately hit the kill switch and rolled off track. Back in the paddock I checked the oil and I was severely low and the first runnings looked like the picture below. So I packed the bike up and went home to investigate more.
When back to the garage I drained the oil more to see if anymore flecks would come out and much more did, all largely of the same size in the initial runnings in the picture. Then I thought maybe I somehow screwed up my detent arm install and something was rubbing on the case causing all the aluminum shavings, which all seem to be the same-ish size. Opening the right engine cover, I found all the "oil". The 300v had turned to jello and was stuck in the bottom end.
As a sidenote, I did a compression test, before remembering there was an auto-decomp on these bikes.
Plan on doing a leakdown test tomorrow. Oil...is now jello
Any ideas??
- Angus
So, background:
2015 rc390, new to me at 12k kms (Canadian) last winter.
Then proceeded to build it into a race/track bike with the following:
- PCV (chad map)
- akra flash
- shift kit
- custom exhaust
- all the other usual stuff not relevant for this discussion (see pic)
Last weekend I had it out for its inaugural run on the track, a 3 day weekend of testing and tuning.
Few key notes:
- Running 15w50 Motul 300v (for those who don't know, 300v is green)
- Distilled water with MoCool (red), no overflow
After two days and a low-side I and the RC dodged unscathed (thanks T-rex and Tyga sliders), I had a serious engine problem on day 3. I was coming out of a hairpin and on the throttle when I had a massive power loss and a low oil pressure light. I immediately hit the kill switch and rolled off track. Back in the paddock I checked the oil and I was severely low and the first runnings looked like the picture below. So I packed the bike up and went home to investigate more.
When back to the garage I drained the oil more to see if anymore flecks would come out and much more did, all largely of the same size in the initial runnings in the picture. Then I thought maybe I somehow screwed up my detent arm install and something was rubbing on the case causing all the aluminum shavings, which all seem to be the same-ish size. Opening the right engine cover, I found all the "oil". The 300v had turned to jello and was stuck in the bottom end.
As a sidenote, I did a compression test, before remembering there was an auto-decomp on these bikes.
Plan on doing a leakdown test tomorrow. Oil...is now jello
Any ideas??
- Angus