heat shield for my slant six!! HELP
Considering the carb sits on TOP of the exhaust manifold (with an iron intake between them) it would be a great start to look for the cause of the heat. My guess is a stuck heat riser that is directing heat up to the intake stove. 3 options:
one is to fix (or investigate) the heat riser issue, make sure its free in its bore and the spring is functional. Imagine the slot in the heat riser as the position of the valve in the riser: The slot in the heat riser shaft points to about 11:00 when open (hot and redirecting exhaust down the exhaust) and will be about 2:00 when cold (directing heat up to the intake stove) I fits stuck in the COLD position after you warm up, its not working. a heated spring will pull it open
2. Install a blocking plate between the intake and exhaust. replace the metal gasket with a thin piece of sheet metal. Dont go crazy on the thickness as it will alter the intake/exhaust port relation.
3. Phenolic spacer under the carb itself. 1/4 minimum plastic, bakelite, wood, anything but metal including aluminum, they make cookware out of aluminum. Transfers heat well.
You already routed the fuel line away from the hot surfaces.
Considering the carb sits on TOP of the exhaust manifold (with an iron intake between them) it would be a great start to look for the cause of the heat. My guess is a stuck heat riser that is directing heat up to the intake stove. 3 options:
one is to fix (or investigate) the heat riser issue, make sure its free in its bore and the spring is functional. Imagine the slot in the heat riser as the position of the valve in the riser: The slot in the heat riser shaft points to about 11:00 when open (hot and redirecting exhaust down the exhaust) and will be about 2:00 when cold (directing heat up to the intake stove) I fits stuck in the COLD position after you warm up, its not working. a heated spring will pull it open
2. Install a blocking plate between the intake and exhaust. replace the metal gasket with a thin piece of sheet metal. Dont go crazy on the thickness as it will alter the intake/exhaust port relation.
3. Phenolic spacer under the carb itself. 1/4 minimum plastic, bakelite, wood, anything but metal including aluminum, they make cookware out of aluminum. Transfers heat well.
You already routed the fuel line away from the hot surfaces.