« Reply #25 on: December 07, 2013, 01:16:25 PM »
For the Iron Dukes the biggest difference between marine duty and automotive duty is the distributor. It has a limited range of operation because the propellor dictates a very narrow range of RPM and a steady operating power. The Mercruiser carbs also would not work well in a car because they're not designed for driving in traffic, just steady on. In this case the marine dizzy gets chucked in the trash and an automotive one put back in its place. They are externally identical.
Usually the main reason "marine duty" is so expensive is not for rust control or fire prevention, it is because of the duty cycle. A Marine engine is put under full load and left there the entire time you're using it. In this case with the Merc Iron dukes it only cost a couple dollars more for the corrosive moisture and salt resistant plugs on the side of the motor but it cost over a thousand dollars more from the factory for the "Super Duty" cranks they had.
« Last Edit: December 07, 2013, 01:18:15 PM by captspillane »
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Currently Inspected and Insured as of Jan 2013:
-1985 Eagle Station Wagon 258 T5 Stickshift
-1980 Eagle Station Wagon 258 Auto Fuel-injected with GM TBI
Minor Repairs Underway:
-1982 Eagle SX4 258 T5
-1981 Kammback 2.5L Iron Duke T5
Restoration Efforts Near Completion:
-1982 SX4- 401 NV3550
-1983 SX4- 4.5 MPI NSG370 (6 Speed)
Restoration Efforts Underway:
-1985 SW- 4.0 MPI AX15
-1982 SX4- 4.0 AW4
-1981 SX4- SD33T NV4500 (Turbodiesel 5 speed)
Future Rescue Efforts- '85 Maroon SW, '87 Limited SW, '84 Limited SW, '87 4 door Sedan, '81 2 door Sedan, '88 White SW, '77 4 door Hornet, '74 2 door Hornet, '79 Spirit AMX, '81 Kammback.
RIP- Red '81 SX4, '84 4dr Sedan, '84 SW, '81 SW, '80 Spirit, '83 SW, '83 4dr Sedan