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Search: Posts Made By: Lepke
Forum: Power Systems 09-15-2021, 11:19 PM
Replies: 20
Views: 525
Posted By Lepke
I've run lots of engines with pyrometers. Almost...

I've run lots of engines with pyrometers. Almost all were turbo. Naturals under usual setups don't create high enough EGTs to harm the engine. If you have pyrometers, they're handy for comparing...
Forum: Power Systems 09-14-2021, 02:08 PM
Replies: 20
Views: 525
Posted By Lepke
You don't need pyrometers on a natural, but since...

You don't need pyrometers on a natural, but since you have them, they can give indications of cylinder health. In theory all cylinders should run close to the same temps. High or low numbers can...
Forum: General Discussion 09-13-2021, 08:20 PM
Replies: 22
Views: 986
Posted By Lepke
Most diesels run more efficiently at higher temp...

Most diesels run more efficiently at higher temp up to about 210F. It atomizes the fuel better and makes a better burn. I changed my diesel PU to run at 205 and gained 2mpg when running light....
Forum: General Discussion 09-13-2021, 08:13 PM
Replies: 1
Views: 170
Posted By Lepke
The engine coolant pump maintains a suction to...

The engine coolant pump maintains a suction to the coolant tank. So if the thermostats are closed there's still a flow thru the engine if the normal bypass is used. The engine coolant pump should...
Forum: Californian 09-12-2021, 11:45 AM
Replies: 27
Views: 1,330
Posted By Lepke
Whenever I assemble threaded components as part...

Whenever I assemble threaded components as part of an exhaust system or anywhere there is a possibility of corrosion, I use an anti-seize compound. It makes future disassembly simple and easy.
$800...
Forum: Fuel Check 09-11-2021, 03:33 PM
Replies: 24
Views: 1,361
Posted By Lepke
40% more fuel is a lot. Since the engine was out,...

40% more fuel is a lot. Since the engine was out, I'd check the alignment. A bad alignment will increase fuel consumption. The average marina mechanic doesn't take the time to do a good alignment....
Forum: General Discussion 09-11-2021, 10:26 AM
Replies: 7
Views: 278
Posted By Lepke
Generators have safety circuits that shut down...

Generators have safety circuits that shut down the engine for low oil pressure, and high coolant temperature. Some have a safety that measures exhaust temperature. My guess is you have a condition...
Forum: Power Systems 09-10-2021, 09:25 PM
Replies: 8
Views: 348
Posted By Lepke
Most marine mechanics "think" they can work on...

Most marine mechanics "think" they can work on Detroits. Most don't understand the injector system or the governor. But they should be able to change oil.
Forum: Power Systems 09-10-2021, 09:21 PM
Replies: 6
Views: 295
Posted By Lepke
There are many on ebay. From $1800 up.

There are many on ebay. From $1800 up.
Forum: Power Systems 09-08-2021, 07:23 PM
Replies: 35
Views: 1,871
Posted By Lepke
If the goal is using less fuel, go slower with...

If the goal is using less fuel, go slower with the current engines. They'll last longer and it's much cheaper than changing engines. Old engines run at lower rpm can last decades. A grossly under...
Forum: Power Systems 09-06-2021, 06:13 PM
Replies: 12
Views: 351
Posted By Lepke
Yes the seals and bearings can be changed. It's...

Yes the seals and bearings can be changed. It's not difficult, probably video on Youtube.
Forum: General Maintenance 09-02-2021, 12:12 PM
Replies: 26
Views: 1,879
Posted By Lepke
Starters for Mazda ZB engine are about $400 on...

Starters for Mazda ZB engine are about $400 on ebay....
Forum: Marlow - Mainship 09-01-2021, 11:17 PM
Replies: 12
Views: 586
Posted By Lepke
Engines experience the most wear at startup....

Engines experience the most wear at startup. That's why industrial diesel users (including Cat users) have oil accumulators that release pressurized oil at start up. Running an engine without oil...
Forum: Anchors and Anchoring 09-01-2021, 11:01 PM
Replies: 56
Views: 2,434
Posted By Lepke
All that matters to most yachties.

All that matters to most yachties.
Forum: Marlow - Mainship 09-01-2021, 07:48 PM
Replies: 12
Views: 586
Posted By Lepke
All the engines in my boats have been had their...

All the engines in my boats have been had their pan drain plumbed to a pump and then to a tank that can be pumped out at a fuel dock or sent to a centrifuge. If necessary I relocate the filter so it...
Forum: Power Systems 09-01-2021, 07:41 PM
Replies: 12
Views: 289
Posted By Lepke
It smells bad to me. What happens when your...

It smells bad to me.
What happens when your batteries are dead, on a lee shore, overcast and no wind?
Your engines are as much emergency equipment as propulsion. It's cheaper and easier to rebuild...
Forum: Anchors and Anchoring 09-01-2021, 07:31 PM
Replies: 56
Views: 2,434
Posted By Lepke
Me, too! My boat is about 80 tons, I use 5/8"...

Me, too!
My boat is about 80 tons, I use 5/8" all chain and a 200# anchor. My storm anchor is 300#. Ships and boats, I've been anchoring for about 60 years. Traditional anchors with proper scope...
Forum: General Discussion 08-28-2021, 08:40 PM
Replies: 18
Views: 787
Posted By Lepke
I have Starlink on my boat. I was in the first...

I have Starlink on my boat. I was in the first group. Unless something's changed you're limited to a specific area. Supposed to be unlimited area in the future. Not sure where the limit is. It runs...
Forum: Power Systems 08-28-2021, 08:24 PM
Replies: 7
Views: 363
Posted By Lepke
I don't know your engine well. When you bypass...

I don't know your engine well. When you bypass the control panel there's probably a fuel stop solenoid that isn't being activated. Probably a wire going to the injector pump. If you crank a diesel...
Forum: General Discussion 08-28-2021, 11:50 AM
Replies: 5
Views: 224
Posted By Lepke
If you don't find a real Detroit Mechanic, it's...

If you don't find a real Detroit Mechanic, it's worthwhile to learn the routine maintenance and adjustments. I learned from a service manual.
Forum: General Maintenance 08-27-2021, 12:45 PM
Replies: 26
Views: 1,879
Posted By Lepke
I can weld it, but it takes cast iron welding...

I can weld it, but it takes cast iron welding experience. It has to be heated to about 1000 before welding, and slowly cooled after. A jig has to be made to hold the ear in position and the the...
Forum: General Maintenance 08-25-2021, 04:08 PM
Replies: 31
Views: 1,609
Posted By Lepke
I've used 100s of gallons of West Systems. Built...

I've used 100s of gallons of West Systems. Built several boats and repaired many. Never had an issue, no blisters, delamination, etc.

But any major epoxy should work fine. And any epoxy is better...
Forum: Liveaboards 08-25-2021, 04:03 PM
Replies: 47
Views: 2,726
Posted By Lepke
Ask your marina.

Ask your marina.
Forum: General Discussion 08-22-2021, 03:44 PM
Replies: 19
Views: 1,004
Posted By Lepke
Smaller injectors eliminate the ability to use...

Smaller injectors eliminate the ability to use the upper rpm range if the load is the same.
Instead of spending on new injectors ($1000+), why not just pull the throttle levers back and slow down?...
Forum: Electrical and Electronics & Navigation 08-21-2021, 04:06 PM
Replies: 6
Views: 266
Posted By Lepke
Most of my life I used 32v and wish the current...

Most of my life I used 32v and wish the current boat had it. You don't burn out winch motors as quickly, have smaller wire, and don't get as large of a voltage drop in long runs.
You can run 12v...
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