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Post by bradswesterbeke on Nov 25, 2020 21:07:33 GMT -5
Hi all!
So glad I found this forum!! Have a marinized version of the S2 engine in my boat that is assembed by Westerbeke and have a couple questions about the fuel screw...
Seems Westerbeke marketed and sold a 63 horsepower version of this engine (mine is set to 52) and I would love to know a little more about the injection pump timing and fuel screw. From the best of my ability to become an online expert on these engines, it seems there is no difference whatsoever in the internals of either engine and mine is merely detuned. How do I turn the power back up? Would love to cruise at a lower RPM and have a little more power in reserve for emergencies. I know there is a fuel screw on the back of the Kiki VE pump, is it as simple as rotating this screw or is there more to it?
Thanks in advance!
Brad
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Post by rustytruck on Nov 27, 2020 20:47:57 GMT -5
I think the only "fuel screw" we have is the adjustment of the rack limiter. I have an s2 from a b2200 in my rx7 and have that maxed. in a steady rpm application like a boat I don't think you can increase the fuel at lower rack settings.
if I am wrong hopefully someone else will chime in.
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Post by tempforce on Dec 14, 2020 23:35:28 GMT -5
two things, your marine engine has piston cooling, which the automotive non turbo engine does not.
the marine engine was available with or without the turbo. both have piston cooling, due to full load use.
the engines will only put out as much power as the amount of fuel you can supply. the way the injection pump is set up. there is no need to add fuel.
they run out of air first, if not turbo'ed. if you want a bit more fuel without the extra wear on the injection pump. buy a set of Mercedes 240D injectors.
they fit and have larger nozzles. you will make more smoke/coal by adding fuel.. just don't over speed the engine..
these engines will last for over a million miles when used in a automotive vehicle. I don't have any idea how many hours of run time that would be.
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Post by rustytruck on Jan 7, 2021 8:24:10 GMT -5
buy a set of Mercedes 240D injectors. they fit and have larger nozzles. you will make more smoke/coal by adding fuel.. just don't over speed the engine.. these engines will last for over a million miles when used in a automotive vehicle. I don't have any idea how many hours of run time that would be. Have you confirmed this fit? just curious as I have several sets of injectors around from the 300 and 240 that are in better shape than the ones on my s2 |
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Post by tempforce on Jan 9, 2021 10:51:27 GMT -5
Most using veg oil are using the 240d injectors as the oil is thicker and has fewer btu's, thus won't generate as much power at a given speed. Using the 240d injectors they can get more fuel due to larger orifaces in the injectors. So using diesel you would in effect get more fuel at the same engine speed and throttle position. Also if you have issues of not providing enough air you will get more smoke. Smoke is not power...
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Post by tempforce on Jun 13, 2021 11:35:30 GMT -5
I would like to add, I've been considering the retirement of my 83 ranger and adapting the engine to a 2 to 1 transmission for use in a 28-32' boat.
knowing I don't have piston cooling, I'll have to reduce the prop angle or size to reduce the load on the engine.
the reason most marine engines are under rated. as they are under constant load conditions, the majority of the time.
I won't be using fresh water cooling. as that causes more corrosion issues within the engine. I'll use a fresh water to engine coolant heat exchanger.
adding a belt driven fresh water pump, for the cooler.
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Post by gradyc on Jun 14, 2021 22:55:17 GMT -5
Hi Tempforce What you are referring to is actually called raw water cooling, pumping water straight to the engine. I agree with you that heat exchanger cooling is by far better for the engine. What you will be adding is not a fresh water pump, it is called a raw water pump. I have lots of years working on boats and I like your idea. You will probably have to have an adapter plate made to attach a marine transmission though.
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Post by tempforce on Jun 15, 2021 10:14:14 GMT -5
found a Westerbeke 135 Perkins with a 2-1 reduction gear. built in thrust bearing. I'm hoping the engine adapter comes with the transmission.
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Post by DieselDangerRanger on Sept 11, 2021 9:16:57 GMT -5
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