At about 3PM this afternoon we lit a fire in my old engine, here's some more pictures of the assembly and tractor.
WARNING, these immages may be to graphic for some viewers. Viewer discretion is advised.
Dowl pinned head, O ringed and a .060 gasket
Inside of plenum, nice radius shaped inlets to the runners. I press the tubeing over an jig to swedge the ends. Airflow does not like blunt ends.
View of SBC fluid dampner, pointer indicated to dampner for timeing purposes. Water pump from a SBC, just tapped pipe thead in the ends and pump water in the front and back of the cyl head. OUt the top through 4 ports, one by each exhaust port.
View of manifold, plenum sized to engine...... or at least what we think it should be.
Rocker arm assembly, I built it from scratch. Girdled studs, and the ends of the rocker shaft are held down by L shaped brackets under the end head bolts. I broke to many shafts in the past, this fixed the problem.
A couple pictures of the tractor,
We tested the tractor around the yard today and had to make several jet changes to the carb. We put a chain under the loader so we have good down draft on the drawbar and make a pass in the yard, stopping the tractor with the loader each time to try and put some load on the engine. After a few passes and some tuneing I decided to let it lite hard. It really seams to run well at 2500 RPM and above, but 4000 it really lites hard. I took it for a few passes in 3rd gear and let the engine wind up, I backed out when I thought it was up around 6500, pushed the recall on the tach to show 7050 RPM. Here's a view from the seat.
WARNING, these immages may be to graphic for some viewers. Viewer discretion is advised.
Dowl pinned head, O ringed and a .060 gasket
Inside of plenum, nice radius shaped inlets to the runners. I press the tubeing over an jig to swedge the ends. Airflow does not like blunt ends.
View of SBC fluid dampner, pointer indicated to dampner for timeing purposes. Water pump from a SBC, just tapped pipe thead in the ends and pump water in the front and back of the cyl head. OUt the top through 4 ports, one by each exhaust port.
View of manifold, plenum sized to engine...... or at least what we think it should be.
Rocker arm assembly, I built it from scratch. Girdled studs, and the ends of the rocker shaft are held down by L shaped brackets under the end head bolts. I broke to many shafts in the past, this fixed the problem.
A couple pictures of the tractor,
We tested the tractor around the yard today and had to make several jet changes to the carb. We put a chain under the loader so we have good down draft on the drawbar and make a pass in the yard, stopping the tractor with the loader each time to try and put some load on the engine. After a few passes and some tuneing I decided to let it lite hard. It really seams to run well at 2500 RPM and above, but 4000 it really lites hard. I took it for a few passes in 3rd gear and let the engine wind up, I backed out when I thought it was up around 6500, pushed the recall on the tach to show 7050 RPM. Here's a view from the seat.