Intake identification. (1 Viewer)

[deliverance]

Okay, back on this. Pulled the 32/36 Weber to put a factory carb back on. Took some pics of the intake. The channels appear to be port dividers, which I confirmed with a scope. I ended up rebuilding a 75’ carb I had and the block checks out to be an early 2f.

 

[JackA]

Definitely not oem. Super cool though.

 

[notmurph7]

This intake was produced by Maxxum Marine in Oregon for a wide range of Inline 6 Engines (Mainly boat engines) in the early 2000's and designed by Lloyd Slonecker. I have a similar casting that must be one of the prototypes due to it being stamped with "Maxxum Marine Patent Pending" on it. Definitely a unique piece to be running on a Toyota Engine.

 

[deliverance]

This intake was produced by Maxxum Marine in Oregon for a wide range of Inline 6 Engines (Mainly boat engines) in the early 2000's and designed by Lloyd Slonecker. I have a similar casting that must be one of the prototypes due to it being stamped with "Maxxum Marine Patent Pending" on it. Definitely a unique piece to be running on a Toyota Engine.

Interesting! I live in Oregon, and bought it here, so that makes sense. Thanks!

 

[Grayscale]

Okay, back on this. Pulled the 32/36 Weber to put a factory carb back on. Took some pics of the intake. The channels appear to be port dividers, which I confirmed with a scope. I ended up rebuilding a 75’ carb I had and the block checks out to be an early 2f. View attachment 3232209View attachment 3232208View attachment 3232207View attachment 3232206View attachment 3232210

Looks superior to the factory intake. The factory set-up is too involved with the heat-exchange between it and the exhaust manifold. The divided ports, and the roundness of the intake flow on the aftermarket unit would contribute to better delivery of the fuel charge. Bernoulli's principle needs to be respected if you are running a carburetor. The vacuum created by the intake stroke on the aftermarket intake seems to have a straight path to the area under the throttle blades. The Toyota intake manifold has a merger of intake ports just after the head on cylinders 1&2, and 5&6, interrupting the fuel-charge flow long before reaching the area under the throttle blades.

 

[notmurph7]

This is a diagram picture from the patent file on how each of the runners are laid out inside the manifold.

 

[Grayscale]

These guys built a tunnel-ram intake manifold with radiator hoses. It bought them torque. Something to think about behind that OEM-intake manifold and 'smogerator' when you are cruising on the highway.

Forget radiator hoses for intake or aluminum sand castings, has anyone built an intake manifold with bent and welded DOM 'header' steel tubing? Custom cross-ram with an 2-barrel Aisan carb on the other side of the valve cover? Or, with the carb in the stock location, a smoother set of 'tuned' runners for each intake port using DOM tube and welding skills?

 

[charliemeyer007]

3d print in PLA. Then bake the sand mold to evaporite out the pla. Or 3d metal print. Seems like a lot of work for a tractor.

 

[Grayscale]

Seems like a lot of work for a tractor.

Yes, but with exhaust headers, the factory intake no longer is heated by the exhaust manifold, and now only cold air reaches the inlet of the air cleaner assembly. Throttle response is fine when the engine is warm, but, this tractor's intake and carburetor doesn't like the cold. I'm thinking that it would be just fine if I didn't swap-in headers.

 

[Pighead]

Yes, but with exhaust headers, the factory intake no longer is heated by the exhaust manifold, and now only cold air reaches the inlet of the air cleaner assembly. Throttle response is fine when the engine is warm, but, this tractor's intake and carburetor doesn't like the cold. I'm thinking that it would be just fine if I didn't swap-in headers.

Yes, living with headers in the cold can be a challenge. We adapt and overcome...