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Correct cummins paint
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This topic has 26 replies, has 14 voices, and was last updated by
2 months ago January 1, 2017 at 9:05 pm for a cummins QSC8.3-540 with a CPL8017 is the correct cummins white paint part number 3885912?
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in: Cummins Marine Engines
March 9, 2024 at 9:51 am My long term Rattle Can Experience. 1–Heating the can in hot water to 100-140F makes for a superior spray experience– 2– you cannot over shake 3–keep some real lacquer thinner in a baby food jar–Soak your spray tips in it and then blow them backwards to clean them using an air nozzle Hope this helps the frustration level some
26 Replies
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posted: 2 months ago
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4bta raw water pump
This topic has 6 replies, has 4 voices, and was last updated by
5 months ago November 23, 2023 at 6:34 am <h1 class=”product_title entry-title”>Can the SMX 1730 use 45 deg elbows and straight elbows to replace the G1503? Is the gear side the same?</h1>
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in: Cummins Marine Engines
6 RepliesNovember 27, 2023 at 8:12 pm Hey Dan, can you shoot me a message and maybe we can chat off the forum. I sent mark a message before I seen this post but would like to pick your brain about doing this in the boat and about any plans you might have and such.Ā ĀLast Post by:
posted: 5 months ago
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Flush out system
This topic has 1 reply, has 1 voices, and was last updated by
6 months ago
October 15, 2023 at 7:44 pm I used this manifold and Seaboard flush out caps to make a system allowing me to flush out my marine engines (QSB 5.9/425) and generator with freshwater, or by using the valves I can suck in antifreeze to winterize them or I can use this to suck water out of the bilge. I pressure tested it with municipal water pressure and there are no leaky valves or fittings. Ā I did highlight the on-off raised letters in black for clarity in the engine room.
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in: General Discussion
1 ReplyOctober 27, 2023 at 12:05 pm The system made winterizing a breeze.Last Post by:
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4BTA-250 lagging behind
This topic has 4 replies, has 3 voices, and was last updated by
July 4, 2019 at 5:21 am I have twin 4BTAs in my boat and the port engine has always had a lagging behind issue, that I was able to correct somewhat by using the star wheel to reduce spring tension in the aneroid fuel control. But it also has been a weaker engine, seeming to drop more rpm when a single engine was put into gear. Idle speed is set evenly between both engines, I believe the problem may be in the pre-boost fuel control screw but I can not find any info on t…
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4 RepliesJuly 18, 2023 at 10:42 am Tom I did get to the bottom of it. I hooked up boost gauges for both engines and my port boost was way down. I put on a new turbo and all was great. I sold the boat last fall and am about to sail a 36 Tiara Open down from The Saint Lawrence River via the Erie Canal. Twin QSB 425s in her.ĀLast Post by:
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4bta low power and rpm
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This topic has 30 replies, has 10 voices, and was last updated by
10 months ago
August 27, 2021 at 3:45 am Hey everyone, Iām having an issue with one of my engines. The boat is an ā01 Carolina Classic with twin Cummins 4btaās, Cpl 2197. The boat starts and idles fine and will rev fine in the slip with no load. When I try to get on plane the port rpms hang up around 1700 while the stb continue to rise. The first time this happened I pulled back immediately because I wasnāt sure if this would damage something. I had a local diesel mechanic take a look …
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in: Cummins Marine Engines
July 5, 2023 at 11:14 am A local place in Severn, MD called Arundel Diesel and Performance.Ā 30 Replies
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proping a 4BTA 3.9 – M 1998 3000rpm 250hp
This topic has 5 replies, has 3 voices, and was last updated by
1 year ago
April 20, 2023 at 2:00 pm Hello , Ā I’m a novice here and trying to get a boat in the Amazon back into use. The picture is from when it was firsted launched 10 years ago. #1 I can’t find a torque and hp curve sheet to send to the prop fabricator here #2 I’m reading on this site that it should be propped at 75 to 100 rpm over rated speed.Ā #3 250 hp @ 3000 rpm. does that mean we need to spec the prop at 3100 RPM? #4 The boat is 3.5 tons, 6 foot beam and 3…
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in: Cummins Marine Engines
5 RepliesMay 10, 2023 at 7:50 am Thanks for responding really appreciate the help!Last Post by:
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Heat Exchanger Zinc Removal
This topic has 3 replies, has 3 voices, and was last updated by
1 year ago April 24, 2023 at 7:22 am Went to check the zinc on the heat exchanger this weekend and the zinc broke off.Ā Opened up the end cap and the zinc is still in place.Ā Most of it (90%) is still there.Ā What’s the best way to remove it to replace it?Ā Should I try and drill through the bottom of it or is there a better way? Thanks.
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in: Cummins Marine Engines
3 RepliesApril 25, 2023 at 11:02 am Since you have the end cap off it is a good time to check the zinc length as to hitting the center casting.Ā In this thread I covered the heat-ex zinc length issue with some pics. Pencil Zinc InstallLast Post by:
posted: 1 year ago
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Front mounted pump 6BTA?
This topic has 11 replies, has 5 voices, and was last updated by
1 year ago
April 2, 2023 at 5:20 am Hi Guys Has anyone produced a timing gear cover with PTO mount that can be used for mounting the pump on? My boat on the port engine is a pig.. very serious pig to change. To do easily the aftercooler and HX have to come off (HX so i can stand and bend over the engine) everything is done pretty much one handed and can take anything from 4-6 hours. SB engine is 15 minutes.. kinda says it all really! If the pump was front mounted it would still be…
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in: Cummins Marine Engines
11 RepliesApril 25, 2023 at 4:20 am <b><i>i guess this can be flipped from side to side,</i></b> They can, I set mine up on the outside of each engine. <b><i>I wonder if the gear could be pulled of the standardĀ pump and replaced with a toothed pulley</i></b> It would be difficult to mount and set up the sliding belt adjuster,Marks drawing is simple to follow and already proven,Ā the Jabsco pump used is bulletproof and way cheaper …Last Post by:
posted: 1 year ago
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6B alternator portside relocation
This topic has 3 replies, has 3 voices, and was last updated by
March 26, 2023 at 9:44 am Hi to all and thank you for being here on the forum! I am new and looking for information for kids and tips to relocate my 24 volt starboard mount alternator to the port side of my 6BNA 5.9 12 valve Cummins? Any suggestions and help appreciate it,Ā Again, thank you
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in: Cummins Marine Engines
3 RepliesMarch 26, 2023 at 6:00 pm A few years ago I pulled my 4BTAs from the boat for some rehab and decided to fabricate a new raw water pump system to get away from the sherwood pumps. I took some time but I designed a bracket that was sandwiched between the block and the front motor mount. It is driven by a crankshaft mounted mandrel driving a 40 tooth timing sprocket and a toothed belt with a 52 tooth sprocket on the water pump. No reason you could not adapt that for your ne…Last Post by:
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Port Engine trouble cold starting
This topic has 12 replies, has 6 voices, and was last updated by
January 26, 2020 at 5:47 am I have a 1996 31′ Custom Carolina Express with twin Cummins 4BT 3.9 – 140 HP (both 1996 with 500 hours). I have had the boat a little under a year. A couple months ago, the port engine began having trouble cold starting (starboard engine starts on first turn of key). I would have to turn the key, 5-10 seconds each time, multiple times while having to rev the throttle to get her going, but it always starts (eventually) and once it is…
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in: Cummins Marine Engines
12 RepliesMarch 26, 2023 at 5:48 pm No, I measured voltage to the solenoid which it had, but none leaving to the heater. Bad solenoid.Last Post by:
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Turbo Paint?
This topic has 5 replies, has 4 voices, and was last updated by
December 7, 2022 at 11:50 am Turbo going on a 450C is unpainted at this point.Ā I’m thinking the exhaust side I will paint (so it doesn’t rust), but the air side housing is aluminum (and gets real hot)–which means it won’t rust and also means will be difficult to get paint to stick to. Anyone have an opinion on this?Ā Any reason to paint the aluminum intake side?
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in: Cummins Marine Engines
5 RepliesDecember 11, 2022 at 5:59 pm I painted both of my turbos with Rustoleum 2X, primer and then gloss white. Looks new a couple of years on.Last Post by:
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QSB 425–Fresh water Boat
This topic has 8 replies, has 3 voices, and was last updated by
1 year ago
November 18, 2022 at 6:03 pm I am looking at a 2007 Ā 36′ with Cummins QSBs in her, less than 400 hours. This is an original owner boat only fresh water. No records at all concerning the engine. Oil and filters done 8 years ago. Looks like it has been used about 20 hours per year. After coolers never looked at. Magnesium anode on the top of the after cooler looked 99% there, and it also looked like it was never out of the engine. Not a sign of corrosion anywhere. If it…
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8 RepliesNovember 20, 2022 at 11:17 am Had it trucked down when fuel was a lot cheaperLast Post by:
posted: 1 year ago
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Turbo to Exhaust Elbow bolts QSB 5.9 380hp
This topic has 16 replies, has 8 voices, and was last updated by
1 year ago
October 12, 2022 at 12:36 pm We’ve had boat for 4 years. Getting around to short list on maintenance. Last item- replacing bolts on turbo outlet to exhaust elbow.Ā I’ve soaked the bolts for 4 days now with PB Blaster. Bought a Proto 6 point 10mm “long” combination wrench. Tried with modest force double wrenching the easiest bolt (11 o’clock position) with no movement.Ā I’m a little disappointed in the wrench “fit” on the hex h…
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in: Cummins Marine Engines
16 RepliesNovember 9, 2022 at 1:42 pm I had trouble getting the same bolts out a few years ago.Ā My bolts were a little rounded.Ā I ended up ordering these: Ā Ā https://www.zoro.com/ken-tool-low-profile-twist-socket-set-10-pcs-30271/i/G2926443/?utm_source=google&utm_medium=surfaces&utm_campaign=shopping%20feed&utm_content=free%20google%20shopping%20clicks&gclid=CjwKCAiAvK2bBhB8EiwAZUbP1KpaCXfrc2p_PbC6durD9VsV85upeoxmZjOFqq45nunjChOsSU02rBoCsqQQAvD_BwE I was…Last Post by:
posted: 1 year ago
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P7100 throttle lever
This topic has 3 replies, has 3 voices, and was last updated by
September 6, 2022 at 5:15 pm The other day I was out cruising and an engine started slowing down. At one point I could only get 2300 out of the starboard 4BTA-250. Ā I started with the simple stuff while drifting and right away found the throttle lever was loose on the splined shaft, so I took it off to see what happened. Seems like it was mounted to far in on the shaft and stripped out the splines on the shaft itself. I was able to move it out on the shaft and picked up goo…
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3 RepliesSeptember 20, 2022 at 3:50 pm āmysterious washerāLast Post by:
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Still chasing fuel issue…4bta
This topic has 11 replies, has 5 voices, and was last updated by
1 year ago
September 12, 2022 at 4:13 pm Evening, I have been having a lag in the port engine spooling. Ive done all the low power checks that i am able to. Replaced the lift pump and the return check valve as the pressures were on the lower side. Still having a 40 sec lag of it spooling. Boost pressures are same as the starboard and egt are about the same. Port runs about 916 wot and starboard is 890. The port losses prime when sitting for 48+hrs but cant find it. Attached are the num…
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in: Cummins Marine Engines
11 RepliesSeptember 15, 2022 at 11:37 pm Or you could blow in the return line, if it bubbles, itās submerged.Last Post by:
posted: 1 year ago
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What to use for long dipstick on 6bt 5.9 cummins
This topic has 1 reply, has 2 voices, and was last updated by
July 30, 2022 at 11:34 am Hello, I recently repowered my commercial salmon troller with a working take out low hours cummins 6bt 5.9 210hp. I had a 80hp 4 cylinder John Deere previously. I have 2 questions.Ā What do people use for the long dipstick for a oil change pump (type that attatches to a bucket top/12v). My john Deere’s dipstick was very short so easy to get to the bottom of the oil pan. The dipstick on the cummins is much longer and extends from the front…
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in: Cummins Marine Engines
1 ReplyJuly 31, 2022 at 6:20 pm I have Cummins 4BTAs. There is a hose connected to the rear of the oil pan at one of the drain plug fittings that is capped off. I attach the suction hose from the oil drain pump to that hose to remove the oil.Last Post by:
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Optimal RPM for 4BTA
This topic has 5 replies, has 3 voices, and was last updated by
July 24, 2022 at 9:48 pm I have a Meridian 341 with 2x 4BTAs. I am trying to find the cruising optimum for my boat. People with this engine (but different boats) seem to cruise at around 2500 rpm.Ā In terms of fuel economy my boat seems to have a plateau between 2500 and 3000 rpm (see the attached chart), where the boat is burning about the same amount of fuel per 100km but obviously getting there faster at higher rpm.Ā My question is if running the engines at about 280…
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in: Cummins Marine Engines
5 RepliesJuly 30, 2022 at 6:46 pm I cruise my 4BTAs at 2400 with a short burst of WOT once in awhile. These are maxed out engines at 250HP and I don’t like running them close to the top.ĀLast Post by:
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One Engine Slow Spooling
This topic has 5 replies, has 3 voices, and was last updated by
1 year ago July 3, 2022 at 6:00 am Twin 450hp 6CTA 8.3 Cummins mechanical engines with under 1,000 hours. When applying throttle to get on plane (with engine sync off) one engine is noticeably slower spooling up than the other one. No smoke that I can see and both will run WOT @ 2600 rpms The bottom is clean and all temps and pressures are normal. The injectors are less than 1 year old. Aftercoolers serviced off boat per Tony’s way 18 months ago. This is most noticeable af…
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in: Cummins Marine Engines
5 RepliesJuly 8, 2022 at 6:23 am I have the same issue, both engines hit the same WOT throttle after spooling. The article doesn’t talk about the issue specifically but it address low power. We have low power on 1 engine.Ā Your RPMS at WOT is that with a phototach on the balancer or off your tachometers? Are you sure your tachs are calibrated? Mine were off by almost 300rpms at WOT. I spoke to several mechanics and they all agree the one engine is not getting the fuel it …Last Post by:
posted: 1 year ago
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In gear idle
This topic has 6 replies, has 4 voices, and was last updated by
1 year ago May 31, 2022 at 5:51 am Is there any adjust to the in gear idle speed? Mmy idle in both port and starboard in neutral is about 625rpm. When the starboard eengine is placed in gear it drops to about 545rpns and the port drops to about 580. The port engine runs ok at this rpm but the starboard has a bit too much vibration load and i need to bump it up to match the 580rpm.. these are 1999 cummins 4bta 250hp diamond series. Outfitted on a 99 pursuit express 3000. Thanks fo…
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in: Cummins Marine Engines
6 RepliesJune 29, 2022 at 6:44 pm 4BT “series” engines are known to shake at idle or just dont like certain low RPMs.Ā Your 4BTA does have the Bosch P-pump which is an excellent improvement over the CAV pumps on the 150hp version. I dont know exactly how the 4BTA handles the RPMs but I would think you need to be a bit higher to get rid of the roughness. I know with CAV pumps they need to be higher RPM than what you are at.Ā I would try 600 possibly to see if that hel…Last Post by:
posted: 1 year ago
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Replace metal fuel lines 4Bta
This topic has 6 replies, has 5 voices, and was last updated by
2 years ago February 17, 2022 at 8:34 pm Hello looking to replace metal low pressure lines on 2001 bayliner 3488 with 4bta. Cummins says return lines no longer available. I see kits here for 6bta but no 4bta line kits. Any suggestions for new lines and connections?thank you
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in: Cummins Marine Engines
6 RepliesMarch 20, 2022 at 7:08 pm I had same issue. I ended up cutting and hose clamp fuel hose.Last Post by:
posted: 2 years ago
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Correct cummins paint
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