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Type: Posts; User: Engine Nut

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  1. The three prong switch by the distributor is an...

    The three prong switch by the distributor is an oil pressure activated fuel pump safety switch. It should have three wires, a purple, a red and an orange. Someone has probably hot-wired the electric...
  2. A marine pump does not do that. It only comes on...

    A marine pump does not do that. It only comes on for a 2-3 second prime at key-up and then again when the engine is cranking or running. The system will have some pressure though so you need to be...
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    Boats that don't have a heater have a hose loop...

    Boats that don't have a heater have a hose loop that connects the heater supply and return so there is always circulation through the system.
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    1,146

    Don't do that. The engine cooling system requires...

    Don't do that. The engine cooling system requires circulation of coolant through the heater loop. Turning the pump off will stop the flow of coolant through the heater loop and will likely cause an...
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    No anodes in a raw water cooled engine ... only...

    No anodes in a raw water cooled engine ... only in closed cooled engines.
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    The timing tape must have come off the harmonic...

    The timing tape must have come off the harmonic balancer. The Indmar P/N is 985206. Your dealer can order one for you.
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    Only carbureted engines have oil pressure...

    Only carbureted engines have oil pressure activated switches for the fuel pump. The fuel pump in an EFI engine is controlled by the ECM. There is a small fuse holder with a cover that has three...
  8. A 2003 model does not use a crank sensor. There...

    A 2003 model does not use a crank sensor. There may have been one in the cover but it was not connected to anything. We did not start using the crank sensor till the 2006 model year.
  9. The part you are referring to is a drive plate...

    The part you are referring to is a drive plate and it is not rebuild able. If it is the original plate in a 2003 model, it should be replaced. The recommended plate is P/N 885203. That plate is...
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    Sounds like you might have vapor lock but that...

    Sounds like you might have vapor lock but that high fuel pressure is a concern. High fuel pressure is typically a fuel pressure regulator issue or a restricted fuel return to the tank. A 2004 model...
  11. We installed the thermostat housing dry ... no...

    We installed the thermostat housing dry ... no RTV on the gaskets. The two larger bolts are torqued to 31 foot pounds and the smaller one to 17 foot pounds.
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    If you have a Raptor engine that has metal...

    If you have a Raptor engine that has metal shields on the spark plug wires, the metal shields should be removed. In some cases the shields prevented the spark plug wires from seating properly on the...
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    That is a connector for an evaporative emission...

    That is a connector for an evaporative emission purge valve that comes on the engine but we do not use. Nothing should be plugged in there.
  14. You can get the filter at NAPA P/N 3481. The most...

    You can get the filter at NAPA P/N 3481. The most important thing to do is to relieve the fuel pressure in the system before removing the filter. Go to the fuse box on the engine and remove the cover...
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    The dealers are not able to install a 440...

    The dealers are not able to install a 440 calibration in a 400 ECM. If you want a boat with a 440, you have to buy it that way.
  16. Thread: Oil

    by Engine Nut
    Replies
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    915

    Yes, that oil is just fine for your Raptor engine.

    Yes, that oil is just fine for your Raptor engine.
  17. We recommend replacing the on-engine filter...

    We recommend replacing the on-engine filter annually or every 300 hours, whichever comes first. Check the Supra Operator's Manual for their recommendation for the in-tank filter.
  18. There are actually two fuel filters but neither...

    There are actually two fuel filters but neither are the spin-on type you are used to. The primary filter is in the fuel tank as part of the fuel pump assembly. There is also an in-line filter on the...
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    The shifting transmission has a drain plug. It...

    The shifting transmission has a drain plug. It will be on the side of the transmission near the bottom you can drain from there or suck it out. The v-drive oil will need to be pumped/sucked out.
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    The info is in the Operator's Manual. The...

    The info is in the Operator's Manual. The shifting portion of the transmission, with the red dipstick, uses Dexron 3 or Dexron 6 automatic transmission fluid. The v-drive portion with the yellow...
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    With permission of the manufacturer, we changed...

    With permission of the manufacturer, we changed the oil that we install in the Walter v-drive to 15W40, the same oil we recommend for the engine. There has been no detrimental effect noticed from...
  22. You should have a cartridge style filter on your...

    You should have a cartridge style filter on your 2017 model engine.
  23. The hose barbs need to be 1 1/4" as the hoses are...

    The hose barbs need to be 1 1/4" as the hoses are 1 1/4" ID
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    The first year's manual for the Raptor engine had...

    The first year's manual for the Raptor engine had the oil capacity incorrectly stated at 6 quarts. The capacity in subsequent manuals was corrected to 8 quarts. Don't just dump in 8 quarts though....
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    The 400 and 440 Raptors use semi-synthetic or...

    The 400 and 440 Raptors use semi-synthetic or fully synthetic 5W30 meeting the API rating of SN. The old no synthetics for 100 hours does not apply to these engines. They are going to hold close to 8...
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