Here’s a super-upgraded solution for hardware issues. The thermal cycling of getting hot and cold can loosen the head cylinder nuts. A spring washer can help maintain proper torque. The coupler nuts offer a better grip on the engine mounts, intake, exhaust and cylinder head.
5 Bellville Washers, 10 – 8mmx24mm Coupler Nuts, 10- 6mmx18mm coupler nuts, 2ea- Cylinder Base Gasket and Cylinder Head Gasket $27.50 plus s&h (ORDER BELOW)