13B 4 port? What do you make of this engine?
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the egr cover plate on the center iron makes it an s4 NA center. look like s5 rotor housings? is that something screwed in above the spark plugs?
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turbo type rotor housings that is the bung for the knock sensor that you are seeing above the spark plug...... This looks like it could have been one of the Marine Motors that got imported a bunch of years back. Essentially there was a company that imported a container load of NEW engines for use in Marine applications. the base engine was a 4 port turbo block with a GSL-SE (actually turbo 12a) type front cover. they had NA rotors and all came with a NEW distributor, alternator and water pump.
without more information that is the best I can do.
without more information that is the best I can do.
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