Oct
02
Flexible impeller pumps provide an efficient solution to most marine pumping needs. JMP has high-quality pumps designed especially for engine cooling applications and are compatible with Detroit Diesel engines. Click here for a hi-res photo: http://www.martinflory.com/releases/jmp20255h.jpg Flexible impeller pumps provide an efficient solution to most marine pumping needs. JMP has high-quality pumps designed especially for engine …
Oct
02
The Cutless bearing (trademarked version of a water lubricated rubber bearing) supports the propeller end of the shaft. It is a long cylinder of stainless steel, naval brass, or fiberglass, with or without a flange, that fits snugly inside the stern tube or shaft strut. The bearing surface consists of longitudinally ribbed nitrile rubber, the …
Oct
02
The seawater pump is powered by a belt driven by a pulley on the end of the crankshaft. It is of the rubber impeller type, which is not easily damaged or fouled by sea life sucked into the system. As the impeller turns, the cavities between the impeller blades at the bottom are squeezed by …
Sep
23
A Water Jet Is Forced Water thru an Impeller Tuesday, August 3rd, 2010 An impeller is a rotor inside of a tube or conduit used to boost the pressure and flow of a fluid. Impellers in pumps An impeller is a rotating part of a centrifugal pump, usually made from iron, steel, bronze, brass, aluminum, …
Sep
23
Thursday, August 19th, 2010 HIGH-PERFORMANCE PUMPS SPECIALIZED FOR APPLICATIONS When boat owners are in need of flexible impeller pumps, there’s one name they can always trust, JMP. The company’s electro-magnetic clutch, general multi-purpose and engine cooling pumps can be designed to meet specific application requirements. For over 30 years, JMP has manufactured pumps and currently …
Sep
22
Thursday, August 19th, 2010 Historical dates on Detroit Diesel Engines (DDC) 1938 General Motors forms a new division – Detroit Diesel Engine Division, they mostly build the popular inline 71 Series, a high speed two stroke engine, from a one to six cylinder configuration. 1957 GM Diesel Engine Division introduces the 53 Series of two …
Sep
22
Wednesday, September 15th, 2010 By Louis J. Lemos The volume, variety and continuity of commentary pro and con the Jones Act appears to have reached the point beyond which further repetition becomes futile. It is hereby suggested that the time has come for all interested parties, Ship-owners, crew-members, freight shippers, stevedores, Trade Unions, and interested …
Sep
22
Tuesday, July 20th, 2010 Gaining wide acceptance in the global market, JMP has been selected by Hyundai SeasAll to manufacture engine cooling pumps for its marine diesel engine line-up. Hyundai SeasAll is a division of Hyundai Motors. JMP developed pumps and impellers specifically for Hyundai SeasAll’s applications. “We’re glad to align ourselves with such an …
Sep
22
Thursday, August 5th, 2010 By Kyle McBride, eHow Contributor Marine fuel hoses carry fuel from the tanks, through the fuel filter and water separator, to the fuel pump and then to the carburetors or fuel gallery (diesel). The fuel hoses must be able to withstand contact with gasoline, two-stroke oil, diesel fuel, engine oil and …
Sep
22
Tuesday, August 10th, 2010 By Kyle McBride, eHow Contributor Inboard motor drive shafts must be checked for a number of potential problems. Poor engine alignment and loose motor mounts can bend the shaft, as can hitting something solid with the propeller. The excess vibration from a bent shaft can beat up the cutless bearing and …