I have a Titan IOX-340 with about 50 total hours, for which I am in the middle of a condition inspection. Compressions were all good (all 77/80 or better). However, boroscope of exhaust valves was not so good -- #4 exhaust valve shows some uneven heating. I took off the rocker cover, and it appears that the valve spring retainer (is that the rotator?) is wearing against the stamped rocker cover.
This wear is enough that it has a groove that can be felt by fingernail, worn maybe 1/3 through cover. Although clearly the valve operates, I am thinking that if the cover pushes the valve to the side, it might not rotate or settle properly.
I am hoping to be able to lap the valve in place. Sealing area "looks" ok. Has anybody else had this issue, or advice?
Thanks
Ted
This wear is enough that it has a groove that can be felt by fingernail, worn maybe 1/3 through cover. Although clearly the valve operates, I am thinking that if the cover pushes the valve to the side, it might not rotate or settle properly.
I am hoping to be able to lap the valve in place. Sealing area "looks" ok. Has anybody else had this issue, or advice?
Thanks
Ted
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