Here we go again! Aluminum is still up, haven't done any work on the clutch with respect to seeing if it is the clutch basket that is causing it. No oil use, no issues otherwise so I will stick with it being a clutch basket.
Iron has typically been up, a tad higher this time. My instinct says it's the cams. I've transplanted ZZR1200 cams into this bike, and they have a known issue with respect to pitting on the intake side (even in the donor ZZR1200 bike itself). I had the valve cover off for a check/adjustment last summer and the intake lobes are ever slowly showing more pitting. Exhaust cam is fine. Rockers are smooth as a babies butt, as are the lobes other than the pitting indentations.
The ZRX sprays cam lobes from the rocker itself (no oiling holes in the lobes). Intake side sprays oil on the lobe as it begins rotation after contact with the rockers. Exhaust side sprays oil at the end of rotation right before contact with the rocker. This has been part of the speculation for the intake cam wear combined with metallurgy.
Copper is fairly consistent in my opinion as well, this engine has always had it. Any thoughts?
Viscosity is lower, even with a high flashpoint. A query/thought to the collective... last summer a wire in the harness to the stick coils shorted. I was 20 miles from home running on only two cylinders, and felt if I stopped it might not start back up. I was pretty sure what happened based on the feel of the bike, and it was confirmed when I found the wire rubbed. For 20 miles I ran in a lower gear at a higher RPM to get home and wonder if the fuel the bike ingested for those 20 miles in the inactive cylinders would affect viscosity long-term, even though fuel content was low and flashpoint was high at time of the analysis. Because viscosity has not been this low on the last three changes with 10W40 4T (and lower flashpoints) makes me think shearing wouldn't be the issue. The past two analysis have been 10w40 4T, previous to those two it was one run of 20w50 VTwin, before that (4603 mile OCI) was the first analysis of 10w40 4T.
Enjoy!
Iron has typically been up, a tad higher this time. My instinct says it's the cams. I've transplanted ZZR1200 cams into this bike, and they have a known issue with respect to pitting on the intake side (even in the donor ZZR1200 bike itself). I had the valve cover off for a check/adjustment last summer and the intake lobes are ever slowly showing more pitting. Exhaust cam is fine. Rockers are smooth as a babies butt, as are the lobes other than the pitting indentations.
The ZRX sprays cam lobes from the rocker itself (no oiling holes in the lobes). Intake side sprays oil on the lobe as it begins rotation after contact with the rockers. Exhaust side sprays oil at the end of rotation right before contact with the rocker. This has been part of the speculation for the intake cam wear combined with metallurgy.
Copper is fairly consistent in my opinion as well, this engine has always had it. Any thoughts?
Viscosity is lower, even with a high flashpoint. A query/thought to the collective... last summer a wire in the harness to the stick coils shorted. I was 20 miles from home running on only two cylinders, and felt if I stopped it might not start back up. I was pretty sure what happened based on the feel of the bike, and it was confirmed when I found the wire rubbed. For 20 miles I ran in a lower gear at a higher RPM to get home and wonder if the fuel the bike ingested for those 20 miles in the inactive cylinders would affect viscosity long-term, even though fuel content was low and flashpoint was high at time of the analysis. Because viscosity has not been this low on the last three changes with 10W40 4T (and lower flashpoints) makes me think shearing wouldn't be the issue. The past two analysis have been 10w40 4T, previous to those two it was one run of 20w50 VTwin, before that (4603 mile OCI) was the first analysis of 10w40 4T.
Enjoy!
