my Low dollar 318 hop-up project
Here is a cost that I was hoping to avoid. I'm pretty sure I could have lapped the old ones to work, however, they were pretty pitted. The seats looked great, along with the intake valves. I decided to go new. Leaky valves destroy gas mileage and performance. Period. I bought these from Summit when I ordered the rest of the stuff. Free shipping that way.
Cost 55.92
Brand - Sealed Power
Both the originals and the new weighed 105 grams per valve
Yes, I lapped the new valve against the seat to help them "seat".