What Causes Pitting On Exhaust Valves at Benjamin Macbain blog

What Causes Pitting On Exhaust Valves. To inspect the exhaust valve: If the contact patch is too big, it can cause the seat to get hot. I've asked a few engine builders over the past couple days and one seemed confident that the pitting is caused by the stem seals. The exhaust valve runs very hot, and the hot valve hits the seat and transfers heat when in contact with it. Local shop doing work calls and tells me. Figure i'll just have the intakes replaced and recut. The exhaust valves perfectly in spec. Getting the face recut will in and of itself cure the issue with the pitting. The back of the valves have like a dark brown almost black. The exhaust valves have some pitting. All they do to accomplish it is to put the valve in a mounted motorized stand which rotates the valve at a specific angle. Visual inspection of the exhaust valve and valve seat can reveal signs of wear, pitting, or burning, which can indicate potential issues.

Fixing a Sticking Valve
from www.kitplanes.com

Visual inspection of the exhaust valve and valve seat can reveal signs of wear, pitting, or burning, which can indicate potential issues. The exhaust valves perfectly in spec. Figure i'll just have the intakes replaced and recut. All they do to accomplish it is to put the valve in a mounted motorized stand which rotates the valve at a specific angle. The exhaust valve runs very hot, and the hot valve hits the seat and transfers heat when in contact with it. Getting the face recut will in and of itself cure the issue with the pitting. Local shop doing work calls and tells me. The back of the valves have like a dark brown almost black. The exhaust valves have some pitting. To inspect the exhaust valve:

Fixing a Sticking Valve

What Causes Pitting On Exhaust Valves The back of the valves have like a dark brown almost black. Local shop doing work calls and tells me. Visual inspection of the exhaust valve and valve seat can reveal signs of wear, pitting, or burning, which can indicate potential issues. The exhaust valves perfectly in spec. I've asked a few engine builders over the past couple days and one seemed confident that the pitting is caused by the stem seals. Getting the face recut will in and of itself cure the issue with the pitting. If the contact patch is too big, it can cause the seat to get hot. The exhaust valves have some pitting. All they do to accomplish it is to put the valve in a mounted motorized stand which rotates the valve at a specific angle. The exhaust valve runs very hot, and the hot valve hits the seat and transfers heat when in contact with it. The back of the valves have like a dark brown almost black. Figure i'll just have the intakes replaced and recut. To inspect the exhaust valve:

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