I've got my 1600 crossflow opened up right now to replace the piston rings, and now that I'm getting ready to put it all back together I've realized I have a potential problem - my intake manifold gasket has the water passage blocked off like this, whereas the gasket that was on there had holes for it like this. Neither Pegasus nor Dave Bean carry an intake manifold gasket with a cut out for the water passage.
I'm thinking about getting rid of my heater (already have the blanking plate), and was wondering if this issue is even a concern if I get rid of the heater. I'm assuming the coolant flow is as follows:
Starts at the water pump
Flows into the heater
Flows out from the heater and back into the fitting on the intake manifold, and from there back into the engine
If that's the case, am I ok to use the gasket that I have, and just plug up the fittings on my intake manifold and water pump that routed coolant to/from the heater?
Or, do I need to connect the intake manifold and water pump fittings via a hose if I remove the heater? If that's the case I'm assuming I'd need to try to cut out a hole in the gasket to match the water passage, or to buy an intake manifold gasket that has the water passage cut out (are there any other US sources people recommend beyond Dave Bean and Pegasus?)?
Thanks in advance!