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Type: Posts; User: Lepke

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  1. Replies
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    Re: 12V71 Twin-Disc Gear Water in the Gear

    Your friend should have the engines checked by a qualified mechanic with Detroit experience before buying the boat. Some Volvo or other brand mechanic isn't going to be useful. Rebuilding a 12v71 is...
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    Re: Can anyone date a Gary Marine 170-V8

    P = 1960
  3. Thread: my md5

    by Lepke
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    Re: my md5

    A diesel needs fuel and heat (or enough compression to raise the air temp to above 500F). In cold weather an older engine may not have enough compression to raise the temperature inside the cylinder...
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    Re: Ford Sabre 2704 ET Spare Parts need

    Try engine rebuilding companies. They have access to parts not always available to the public.
    Some parts on eBay.
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    Re: 471 hydraulic govner

    That governor was optimized for 1200 rpm. And there's no easy way to make it variable speed. It would be easier to put another governor on. eBay usually has someone parting out a Detroit. Also you...
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    Re: Volvo D12 675 overheating alarm at low speed

    It could be the sensor. Since you have twins, trade the sensors and see if the problem moves.
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    Re: How prevalent are rotted out transoms

    It's more common to have a rotted floor. It's usually under outdoor carpet. Out of sight, out of mind.
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    Re: Un-Related Submarine Diesel Engine Question

    Many diesels engines before WWII had exposed rockers. They were manually oiled once an hour. These engines were slow turning with a maximum rpm of about 300. Atlas, Washington Diesel and others made...
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    Re: Anodes in exhaust manifold Perkins 4.107

    To remove a rusty steel plug, nut, bolt, an impact wrench works much better than breaker bar, pipe wrench, etc. Often wrenching on a rusted bolt will twist the head off. Most rental stores have a...
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    Re: Dead battery? wonk wonk

    Gas or diesel engine? Bigger battery for diesel. Battery could have something on that discharged it completely. Probably no good, but you could try charging it. For starting a regular battery, for...
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    Re: Restore it or Junk it?

    Even if it's free, you'll spend more than buying a boat ready to sail. I think it's a little small for around the world. I use to have a yard and picked up a few boats like this to keep my people...
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    Re: Raw water pump frozen

    The impeller is rubber, so if it was bonded to the housing, the vanes would tear off and allow the pump to turn. Most likely cause is frozen bearings. The pump has to be disassembled. Not too hard to...
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    Re: Low oil pressure at idle on 6.2

    Could be the pressure relief valve, usually in the oil pump. Since these are remanufactured engines, could be an oil passage plug, removed for cleaning, wasn't reinstalled. 2 psi at idle on a...
  14. Re: Male Spade Connector on Boat Rocker Switchboard broke off, is there a fix?

    It might be possible to take the switch apart and soldier wire or an extension. Sometimes there's an fuse/breaker for each switch and you can attach there (if you know what you're doing). Or you can...
  15. Re: Would like to add a temperature alarm system to my 4107

    If you have wet exhaust, there are temp sensors that mount on the hose. Usually when I start an engine I feel the raw water hose/pipe where it exits the engine, before it enters the exhaust. You will...
  16. Re: Volvo D41 smoke from breather and air filter. Help

    A compression check is a good way to eliminate valves and rings from the problem. It could be a spun bearing in the turbo. It's common in older engines or engines with poor maintenance to have the...
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    Re: Volvo penta power issues

    I'd do a compression test. One or two cylinders might not be giving their share of power from a ring or valve problem. Could there be some intake air restriction the other engine doesn't have? I...
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    Re: 6-71 engines bubbling

    Cavitation is a problem in high hp diesel engines. Wet or dry. It is the forming of bubbles on the surface of the water jacket. When the bubbles pop it causes pits in the water jacket. More...
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    Re: High oil in 4.107

    British machining about the time of your engine required a lot of hand fitting and filing. Not like today where you can buy a part, replace it and go. You'll see if you read about replacing the...
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    Re: High oil in 4.107

    Most likely the seal on the front of the pump.
    The 4108 is used in farm equipment, probably the 4107, too. So a farm equipment dealer is one place to look. Best bet on timing is talk to a shop the...
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