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Type: Posts; User: Lepke

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  1. Re: How to ensure raw water system (pump & impeller) is wet or flooded before attempting to start?

    When I inspect or change impellers, I lube the inside housing, plates, shaft and key with a finger full of water proof grease. It's in the old Detroit manuals. The lube creates a tighter seal and...
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    Re: VÍtus 20-hp 3-pot diesel, late 70s I guess

    Check the valves for movement and make sure there isn't liquid in the cylinder. A valve could have stuck open. Cranking many times is adding fuel to the cylinder. A hydraulic lock can feel like a...
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    Re: Navy barge engines 8V-71TI engines 1994

    450 is about right. At max hp about 3000 hours with good care and a good operator. Running below 80% of hp, as much as 7000 hours. I've seen 8v71s with twin turbos, don't know the hp, but could be...
  4. Thread: Russian V12

    by Lepke
    Replies
    2
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    727

    Re: Russian V12

    They look like tank engines. M50 is an old engine. Zvezda started making marine diesel near the end of WWII. Parts may be hard to come by with the economic restrictions currently on Russia. ...
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    Re: perkin starter help

    ebay is a good choice for most engines
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    Re: About to reinstall cylinder head. Any tips?

    Ask Pro-Flex. I done racing engines, diesels and radial engines. I always use a sealer. Thin one on gaskets that compress and a thicker one on thin metal gaskets. I'm 70 and only had one head gasket...
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    Re: john deere 6076 engine heating probs

    Don't know your engine, but sounds like a heat exchanger in a tank. Places that service heat exchangers/radiators can probably fix or build a new core. If there is an equivalent tractor version, try...
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    Re: Have I ruined my genset?

    Common in small generator engines is the glazing of the cylinder walls when run at light loads at high speed for many hours. Diesel fuel helps lube the rings. At high speed/no load very little diesel...
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    Re: Perkins Prima m50 - Taco & Temp

    Try Ebay
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    3,502

    Re: 8.0 KW Westerbeke Fuel pump wont activate

    You need to check every connection between the fuel pump and the battery including grounds. Problem is probably corrosion in a connector, fuse holder, etc. Make sure you get 12 volts to the relays...
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    Re: AQD40 / TMD40 fuel consumption

    Fuel use goes up rapidly as you get near top end. On much bigger boats it's common to use twice the fuel used at hull speed for about 7-8 knots more. You're probably not fully planing. You're pushing...
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    Re: wards minn kota model 50612

    Start here or look up a dealer. https://www.minnkotamotors.com/
  13. Thread: Dock Whip

    by Lepke
    Replies
    7
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    3,096

    Re: Dock Whip

    Anything commercial was once homemade. Most involve long fiberglass rods. You need the dock owners permission in most cases and your design needs to maintain the connection to the dock in all...
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    Re: 6-71 engines bubbling

    The nice thing about 71s is no injector pump. No bleeding problems and one less accessory to rebuild. I was a commercial fisherman and in my time the 671 was the most common engine. The reliability...
  15. Thread: 6-71 full fuel

    by Lepke
    Replies
    5
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    1,374

    Re: 6-71 full fuel

    If you don't have a service manual, get one. They're often on Ebay. The WWII manual works for most Grays. Or join http://boatdiesel.com They have PDFs of early training and service manuals for 671s. ...
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    Re: Stuck piston in Palmer PW27.

    A mild acid used to prepare galvanized gutters for soldering. Available at better hardware stores. It will eat the rust, but leave good metal. Afterwards use a baking soda solution to neutralize.
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    Re: 4107 Engine wont go into reverse

    It could be. Not all sellers are truthful. I have opened engines/transmissions and found parts missing, broken, etc.. If the owner thinks it's a cheap/easy fix, make it a condition that he has it...
  18. Re: Possible modified the construction engine into marine engine

    The big difference between marine engines and industrial engines is that the same engine block in marine service gets a higher hp rating because water cools the coolant better than air does. Usually...
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    Re: 74' Atomic 4 fresh fuel question.

    It would be better to have the temp fuel can on the deck outside. Your engine installation should have a blower. Make sure you have good spark. If you have a clean squirt bottle, you can put some...
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    Re: Converting Gas to Diesel

    There's a lot of small diesels, new and used that could replace the gas engine. Most diesels turn slower than gas engines but turn a bigger prop or one with more blades. The transmission is part of...
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