High Volume Oil Pump
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Melling High Volume Oil Pump

Part No. M-84DHV Warranty Details  
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Melling oil pumps provide dependable performance every time in every application. Every pump is engineered, manufactured and assembled to the highest material and production standards. Manufacturing processes include state of the art CNC machines and the latest phosphate coating processes. Melling oil pumps are manufactured from high quality materials in either cast iron or cast aluminum as specified by the OEM engine manufacturer. Internal pump parts are produced from sintered metal or steel. Gears are machined to close tolerances to ensure proper engine pressure and correct, efficient pump operation. End plates are precision ground for maximum ware resistance. Depending on application and design, Melling pumps may use gear, impeller or the latest gerotor technology. When completed every Melling oil pump is individually tested for pressure and flow under conditions designed to duplicate actual engine operating conditions. In addition to OEM pump applications, Melling Select pumps are offered for increased oil flow, increased oil pressure, anti-cavitation capability, lighter pump weight and performance when needed. Depending on your oil pump requirements Melling Select pumps are offered in cast iron, cast aluminum or aluminum billet materials. Each Melling Select pump performance level offers a step up in material selection, engineering advantages and increased durability. All Melling Select pumps designed to provide the highest level of quality and performance with a reasonable level of investment.

Product Features:
  • Engineered to provide consistent, durable performance
  • Precision manufactured from high quality materials
  • Performance meets or exceeds OE specifications
  • Provides higher oil volume output over stock replacement oil pumps when required
  • 1 year limited warranty
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Belt Driven:No
Gasket Or Seal Included:Yes
High Pressure:No
High Volume:Yes
Material:Cast Iron Body
Oil Pump Type:Stock Replacement
Pickup Screen Included:No
Pressure:Standard Pressure
Volume:25% Gallons Per Minute Higher

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1 Question | 1 Answer
Displaying question 1
  • Q:

    I have an early to mid- seventies 460 BB in an '85 F250. Recently the timing gear pin sheared off, causing an oil pan drop to re-insert the oil pump shaft. Upon doing so, I discovered the shaft had been torqued a good quarter turn. The pump (w/ shaft on drill, or by hand) continues to push what appears to be a good volume, and pick-up seems to be clear as well. Recently, prior to timing gear, it had suffered an extreme drop in oil pressure. 1.) Would the shaft being torqued cause this? 2.) I've been told that dropping a high volume pump in will cause problems. Is there proof of this occuring? 3.) Would a pump change be warranted, or would a replacement shaft suffice?
    Asked on 10/9/2011 by brad from PGPA

    1 answer



      If your engine also makes any noise when the oil pressure gauge drops, your best diagnostic procedure is to check with a mechanical pressure gauge to see what the actual pressure is. You may have a failing oil pressure sending unit that sends the signal to the gauge what the pressure is. If the sender is bad, replacement of the sender will rectify your problem.

      Answered on 10/9/2011 by Auto Part-er Andy
Displaying question 1

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