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- Cummins Marine Forum Topics
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onan parts on sbmar?
This topic has 2 replies, has 3 voices, and was last updated by
2 weeks ago March 24, 2025 at 3:42 pm hi there, can’t find any onan parts on sbmar, must be doing something wrong, looking to find parts for mdkbl spec b, thank you steve mart
2 RepliesMarch 30, 2025 at 5:07 am ONAN is best served by your local Cummins Distributor We do deal with Northern Lights and larger commercial generatots Seaboard Founder & PresidentLast Post by:
posted: 2 weeks ago
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Zerex (Valvoline) Coolant for TAMD
This topic has 1 reply, has 2 voices, and was last updated by
3 months ago
December 23, 2024 at 4:09 pm So Googling around it looks like some guys use the ZerexĀ ZXPCRU1 green 50/50 coolant. Any opinions out there on using this in my TAMD 72P-A Volvos? Specs seem to line up. Summit Racing show list price of $9.99 which seems sketchy. Cheaper than Walmart. JBB
1 ReplyDecember 24, 2024 at 7:18 am Summit Racing show list price of $9.99 which seems sketchy. Cheaper than Walmart. Walmart in part operates like Amazon. Many products listed by Walmart are actually sold and shipped by someone else. This is one of them.Last Post by:
posted: 3 months ago
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Yanmar Zincs
This topic has 1 reply, has 2 voices, and was last updated by
4 months ago December 3, 2024 at 7:40 am hi,Ā Need the location of the zincs on Yanmar 6LY3-ETP motors.Ā Any help would be greatly appreciated.
1 ReplyDecember 3, 2024 at 8:27 am Just this one at the belly of the heat exchanger. Rob "Luck is the residue of good design."Last Post by:
posted: 4 months ago
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Yanmar 3hmfl-k Fuel Problems
This topic has 2 replies, has 3 voices, and was last updated by
5 months ago
May 30, 2024 at 4:30 pm Hi. I have a genset powered by a 1990 Yanmar 3hmfl-k diesel engine. When I started it up after 4 months of storage, it ran for 3 or 4 minutes, then it died. I checked the Racor fuel filters and fuel supply, and both seemed fine. The diesel appears good and my mains are running fine off of the same fuel tank. I removed the fuel filter canister and found that it was empty, and that fuel filter appeared fine. So I tried to bleed the system and foun…
2 RepliesNovember 4, 2024 at 10:24 am Have you installed the outboard squeeze bulb?Ā Ā If so what was the result?Last Post by:
posted: 5 months ago
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Detroit 4-53 Max HP (Dyer 29)
This topic has 8 replies, has 3 voices, and was last updated by
7 months ago
September 13, 2021 at 10:23 am Hi Guys, I just recently purchased a Detroit Diesel 4-53 Natural for a Dyer 29. Does anyone know how much horsepower I can get out of it if I turbo it? Thanks, Pat
8 RepliesSeptember 13, 2024 at 12:53 pm 1150 to 1200 is a reference to EGT not HP. Based on other engine/injector/dyno graph I extrapolated the 266HP figure. The 400HP 6V53 means 66.6 HP per hole which in my case is 266 for same mm output injectors plus I’m running a bypass so who knows really.Ā I’m not expecting any magic out of my brick though. Maybe about .365 BSFC-LB/BHP-HR which is likely poor performance compared to modern engines.Last Post by:
posted: 7 months ago
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New Boat, and Propping
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This topic has 31 replies, has 6 voices, and was last updated by
1 year ago
October 19, 2023 at 9:18 am I recently purchased a new boat to me. Its a 31′ Bertram FBC. It has 2003 Yanmars 6LYA-STP 365 H.P. Each engine has right at 700 hrs on them. The gears are zf models 220A, ratio is 1.75:1 and she is propped at blade 22 x 24 x 1.75. I was told when lifted at the yard, that she weighs 18k pounds. It also refit by Cabrera Yachts in 2003. They tunneled the hull as well. This boat reminds me of Shooter that Seaboard refit. The old owne…
April 2, 2024 at 8:15 am Any thoughts or suggestions?
31 Replies
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posted: 1 year ago
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Metal in fuel
This topic has 3 replies, has 3 voices, and was last updated by
1 year ago
February 2, 2024 at 12:36 pm Iām looking for some advice with a problem Iām having with my yanmars. I have a 2001 32 albemarle with twin yanmar 6lya-ste with approximately 1350 hours. For filtration each engine has a racor 900 with 10 micron filters and then the on engine yanmar filter which Im unsure of the micron rating.Ā <br /><br />Over the summer I thought I may have gotten a tank of dirty fuel from one the marinas I travel to. The racors which normally last…
3 RepliesFebruary 4, 2024 at 3:13 pm Metal in the return lines are probably debris that were in the lines when the system was installed. Ā If the HP pump was spitting metal, there would be other obvious symptoms. Ā If the debris were coming from the tanks, your filtration system has failed miserably, but those debris couldnāt pass through the pump without causing damages anyway.Last Post by:
posted: 1 year ago
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yanmar exhaust design
This topic has 2 replies, has 2 voices, and was last updated by
January 5, 2024 at 3:57 pm I am redesigning the exhaust system on my boat (Bertram 31)Ā I was copying Shooters exhaust, but with a few changes.Ā I ran 4″nominal for the dry section, and used a 6″ OD for the mixer.Ā The gap between the dry exhaust, and the wet side on the mixer is 5/8″ On the mixer, I noticed Seaboard flares the inside (dry) portion of the exhaust.Ā Is this to hold water back a bit for better cooling?Ā Should I in some way close th…
2 RepliesJanuary 6, 2024 at 10:18 am I fallow you, thank you!Last Post by:
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Intermittent not reaching high cruise RPM
This topic has 2 replies, has 2 voices, and was last updated by
July 13, 2023 at 9:14 pm Something odd happens today. CAT 3126 MUI normal cruise about 2400 rpm max is 2850. Trolling speed for about 6 hours then time to run for home. STBD engine was at the throttle stop and only reached 2350. Ran fine at that RPM. So I throttled down ran it up and went right up to 2850 throttled back to cruise RPM 2400 and slowly had to keep pushing the STBD throttle forward until it was at the stop again holding only 2350. Port throttle was in its n…
2 RepliesDecember 31, 2023 at 2:16 pm No one yet? Did you get it sorted out?Last Post by:
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YANMAR 4JH4-HTE low Power
This topic has 3 replies, has 3 voices, and was last updated by
1 year ago
December 12, 2021 at 5:25 am This sailing catamaran has 2600 hours on 12 year old engines. No electronics. One engine runs up above 3200 rpm in neutral but only 2000 in gear. I new to the boat and not sure if it ever hit rpm. I am running out of a bucket, gravity feed with clear hose and new fuel Throttle linkage removed Just had the injector pump overhauled Just had the injectors tested Tested injector tubes for obstruction Checked valve lash Took turbo to the shop and was…
3 RepliesOctober 16, 2023 at 2:27 pm Dear Bart Harold,<br />I have the same problem with my yanmar 4jh4-hte, it’s driving me crazy.<br />Have you found the solution?<br />Like to hear from you<br />Kind regards, John LangendijkLast Post by:
posted: 1 year ago
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6lya-stp boost and winter heat
This topic has 6 replies, has 2 voices, and was last updated by
1 year ago September 29, 2023 at 7:47 am I have a 370 6lya-stp on a fresh rebuild. (40hrs ago). Previously I installed a pyrometer/boost gauge by smx but never got the boost part hooked up. I assume I need a threaded nut with hose barb to connect boost tubing to gauge. The guy who did the rebuild showed me where it should go on the motor, that little unit by the air cooler. If that is correct can you point me in the right direction for tubing and that ānutā. Also, i use my boat year r…
6 RepliesOctober 11, 2023 at 3:34 am Call the shop for the boost gauge kit.Ā Not sure what part of CT you are in but Defender Marine sells a few different heaters.Ā Rob "Luck is the residue of good design."Last Post by:
posted: 1 year ago
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yanmar 4lha-ste engine temp.
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This topic has 23 replies, has 4 voices, and was last updated by
1 year ago August 3, 2020 at 10:08 am Starboard is burning more fuel, higher temp, slightly higher oil pressure and minor darker exhaust vs the portside. (only happens when 2500+ rpms / cruising out) Any ideas? heat exchanger? too much fuel/burning rich? Thanks! Engines: twin turbo diesel yanmar 4lha-ste
September 20, 2023 at 11:49 am If it were me, I would go with the following https://www.sbmar.com/product/bronze-tee-adapter-for-freshwater-flush-system/ The valve is only for safety.Ā It will always be open as well the sea cock. And then this https://www.sbmar.com/product/stainless-freshwater-flush-thru-hull/ and a Ā¾ inch hose barb to fit the thru-hull fitting and one to fit the top of the valve. And Ā¾ inch reinforced tubing All bronze, no plastic. Or if you have Groc… 23 Replies
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posted: 1 year ago
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Black Racor Primary filter element
This topic has 9 replies, has 6 voices, and was last updated by
2 years ago November 18, 2022 at 9:21 am I posted this same question on Boat diesel and received a few good comments. I thought I would try for a few more opinions. History: I purchased the boat a year ago 34 Mainship Pilot twin 4LHA-STP Yanmars. The previous owner had fuel tank issues when he purchased the boat in 2012 and had the tank (240 gallon aluminum tank) Cleaned ( Polished ) I have the report. He had the filters changed a couple of times a year and maintained the boat but only…
9 RepliesApril 8, 2023 at 3:47 am You said you don’t like electrical fuel gauges – and I agree that typical senders with swing arm setups are crap.Ā But consider three other options.Ā My boat uses all three. Regular electrical gauges attached to Centroid senders.Ā These have no moving parts and are ordered to fit your tank depth so come pre calibrated.Ā They can work with Analog needle or digital gauges. NMEA digital tank senders which also have no moving parts.Ā Mar…Last Post by:
posted: 2 years ago
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Neither turbo spooling up Man D28 v12 mechanical
This topic has 5 replies, has 3 voices, and was last updated by
2 years ago April 4, 2023 at 5:41 pm Looking for troubleshooting suggestions. Hereās where we are: I recently completed cooling system service and replaced fuel cooler after it failed, leaking sea water into tank.Ā Got water out of tank, changed primary and on engine filters, all had some water in them. Boat ran fine after repairs – temps looked good, etc. After about an hour of running, tried a WOT test. Both engines made rated RPM+ (~2350) throttled back. My mechanic though…
5 RepliesApril 6, 2023 at 5:44 am I thought the same thing I just donāt see what it could be. The airseps are also only 2 years old and I donāt see any sign of deterioration or anything. Only thing I could think of would beā¦and this would be awfulā¦maybe the techs when disassembling the engine for cooling system flush used the filter as a bucket to put nuts and bolts inā¦then maybe they forgot a washer or something in there when it went back on. I guess if so weāll find it when we…Last Post by:
posted: 2 years ago
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Fuel in Oil – Onan Generator
This topic has 3 replies, has 4 voices, and was last updated by
2 years ago March 14, 2023 at 9:47 am I just got my oil sample back on my 9KW Onan generator and it unexpectedly had a huge jump in the % of oil in it (4%). The generator had sat for 5-6 months without being ran, could this have caused the increase of fuel in the oil?Ā There was a lot of oil on the water when I fired it up, which dissipated completely after running it for 10 min.Ā Other ideas? I’m seeing other possible causes as: Lift pump Injectors Piston seals Thanks for t…
3 RepliesMarch 23, 2023 at 12:16 pm Here’s the report re-uploaded as a jpeg image. Does this genset run with a good amount of load on it? Rob "Luck is the residue of good design."Last Post by:
posted: 2 years ago
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Onan Generator runs without fuel pump?!?
This topic has 4 replies, has 3 voices, and was last updated by
2 years ago
February 11, 2023 at 7:34 am I’ve had intermittent issues with our Onan 10KW generator model MDKWB (diesel) tripping the DC control circuit breaker (the 10amp red breaker) shortly after startup.Ā Finally dug into it last night and this is what I discovered.Ā I traced it to a high current draw on startup and by process of elimination narrowed it down to the fuel pump.Ā And during that process, after disconnecting the electrical leads to the fuel pump, I started the gen…
4 RepliesFebruary 23, 2023 at 1:19 pm I have a 9kw Onan MDKAL. I believe our fuel pumps are only used during preheat when the control switch is held in the stop position. In the stop position the fuel pump is purging any air from the low pressure side of the fuel injection system. If you ever start your generator without first using preheat, then you would also not be priming the low pressure side which is no problem if you don’t have any air in the fuel system.Last Post by:
posted: 2 years ago
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Turbo Wash
This topic has 1 reply, has 2 voices, and was last updated by
2 years ago January 11, 2023 at 11:38 am I repowered with 370 Yanmars back in 2006.Ā I think this is just before all the electronic stuff was added to these engines.Ā Yanmar back then had a product and procedure called “turbo-wash” that was a soapy/water mixture that got sprayed directly into the air intake while the engines were rev’ed up and under load.Ā This was intended to remove any carbon build up and clean the system.Ā Ā My engines have about 1700 hours now and …
1 ReplyJanuary 11, 2023 at 6:00 pm Yes, Yanmar’s best vintage IMO, great engine, treat it to the highest of standards. I’d remove the air cleaner first and get a good visual of the compressor fins so you know how things looked before the “wash” and then give it a go with a squirt of Dawn in a spray bottle … a few minutes of spraying out at sea at cruise.Ā Then compare what you see afterwards as to where you started… Rob "Luck is the residue of …Last Post by:
posted: 2 years ago
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Yanmar 4JH3-HTE
This topic has 1 reply, has 2 voices, and was last updated by
2 years ago December 12, 2022 at 1:23 pm Hi, looking at a sailboat that has a Yanmar 4JH3-HTE (100 hp) in it. The antifreeze overflow tank is not attached to the nipple underneath the fill cap but somewhere near the front left of the engine (maybe near the thermostat??). When you open up the fill cap to check the level it is not up to the top as it would be on my Westerbeke 40, it is about 2″ down. The engine was installed 20 years ago and seems to work fine and seems well mainta…
1 ReplyDecember 12, 2022 at 6:29 pm Your system was designed to operate with a non-pressurized Plastic overflow bottle kinda like 99.999% of the cars out there.. That way you have visual of the coolant level.Ā Cold,Ā all is 100% full in the engine -Plastic bottle maybe 50% full.. Hot the bottle rises a tad, & w/ the engine cools,Ā the bottle goes back down……..Too simple when all is right and the engine is empty of air and has a proper coolant cap. Sounds like you d…Last Post by:
posted: 2 years ago
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Engine removal and Maintenance
This topic has 2 replies, has 2 voices, and was last updated by
2 years ago
December 2, 2022 at 2:16 pm Hi, We have a pair of Yanmars’ 4LHA STP on a Bertram 28 1980 installed circa 2006 with 2,100 current hours. We will be replacing the mounts and doing an overall servicing, painting etc. at the shop. Is there anything that you would recomend doing to the engines while they are out (i.e. replacing certain hard to get hoses, oil lines etc.? Maybe replacing oil pan gasket? Things that may be easier to do while the engines are in the shop. We w…
2 RepliesDecember 5, 2022 at 2:49 pm Thanks for the reply Tony, Attached some pics. CBZLast Post by:
posted: 2 years ago
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Yanmar 4LV (230) – Exhaust doubts
This topic has 4 replies, has 2 voices, and was last updated by
November 18, 2022 at 9:09 am Dear All,<br /><br />Thanks for allowing me in the forum.<br /><br />I’m the captain of an 80 ft sailing boat launched in 2020, she mounts a Yanmar 4LV 230 hp engine.<br />The engine instrallation was carried out by the boatyard with stock Yanmar riser and mixing helbow.<br />The dry section of the riser reaches 8 inches over the waterline (despite there being at least another 16 inches of available heig…
4 RepliesDecember 2, 2022 at 10:08 am –Elbow/showerĀ Ā Ā Usually changed at the 5 yr mark for safety.Ā They have been known to go longer but mostĀ people would change at 5 yr.Ā Ā Ā SO the suggestion of every 2 yrs/500hr sounds good.Ā Ā THey usually give NO warning of internal leaks so a frequent change is a good precaution. –I question the washing.Ā Ā If the turbo ONLY sees the engine combustion soot, NO WATER AT ALL,Ā then I question the washing unless explained bet…Last Post by:
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onan parts on sbmar?
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