The trap of the industrial / motorhome 318-3

Seems like folks are always asking about these. Here's a customer from another forum who fell into the trap. Swapped intake, then it leaks.....................

These engines use a lot of "weird" hardware on the front of the engine, with a "high mount" water pump. Notice the cartridge oil filter. Notice the timing mark is special. But the big trap is............

the cylinder heads. Not only do some of these use the big Ford style 18mm tapered seat plugs, but the HEAT CROSSOVER is COOLANT and not exhaust.

This means that if you install a light truck/ car intake, with EGR you are going to have coolant injected into the intake/ cylinders, and depending on what intake and how well it's sealed, you still might have a leak to the exterior of the engine.

The clue is the heat crossover port in the heads. Instead of having the telltale crescent around the top of the port, these just have the port.........coolant

The bottom photo is the coolant supplied crossover, the photo above is the conventional car/ light truck heads

http://www.mymopar.com/forums/index.php?showtopic=17858&st=0&gopid=50725&#entry50725

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