Topics Engaged In
-
- Cummins Marine Forum Topics
-
-
Impeller remova QSB 5.9l
This topic has 7 replies, has 7 voices, and was last updated by
8 months ago November 5, 2018 at 7:20 am Hi Tony, A very simple question: how to remove the impeller from the water pump on my QSB 5.9 ? See attached picture. Thank you !!
Started by:
in: Cummins Marine Engines
7 RepliesSeptember 1, 2023 at 3:38 pm Hi, Sorry, I had not seen Tony tips which give advice on impeller. I’m going to buy the one that advises instead 😂Last Post by:
posted: 8 months ago
-
Cruise RPMs
This topic has 7 replies, has 5 voices, and was last updated by
1 year ago
June 5, 2019 at 3:54 pm I just had my 6BTA props repitched, and now I’m happy to say I’ve gone from 2800 WOT to 2950 WOT. So now what should I shoot for in terms of cruise RPM? I come up on a good plane around 2200 or so.
Started by:
in: Cummins Marine Engines
7 RepliesAugust 29, 2022 at 5:55 pm I have a 315 6bta with the denso pump. I am propped to make 2950 easy. Assuming I am also safe to cruise 2100-2400 (the range Tony cites above), aside from the added fuel burn modestly decreasing engine life, is there any other concern cruising at the higher end of this range (2350-2400)? I’ve historically stuck to 2100-2200ish. I have the 160 stat and SMX redundant temp alarmed for 190 and the water flow alarm at my mixer. I don’t have an EGT …Last Post by:
posted: 1 year ago
-
Aftercooler pressure tester
1
2
This topic has 24 replies, has 11 voices, and was last updated by
2 years ago November 9, 2019 at 12:39 pm So after cleaning the aftercooler core I wanted to pressure test it for leaks before assembling the aftercooler. I saw a picture of the way Seaboard tests them but I wanted something I could hook up quickly since I have 2 aftercoolers to test. I thought I would share my cheap and easy design . ABS 4″ pipe with a 5″x4″ reducer, end caps, with one end tapped with a female air fitting and valve so I can regulate the air pressure.…
Started by:
in: Cummins Marine Engines
February 21, 2022 at 12:16 pm I tested to 25 PSI with air, per a lot of recommendations on this site.
24 Replies
Last Post by:
posted: 2 years ago
-
SMX 1730 will it fit without engine lift?
This topic has 3 replies, has 4 voices, and was last updated by
4 years ago November 3, 2019 at 10:39 am I am about to do winter upgrades on both my engines (6BTA 370HP) — I read the post that removing the old Sherwoods will require a slight lift of the engine. Assuming I use the new SeaBoards as replacements will I in the future have to lift the engine or will the SMX1730 slide right in?
Started by:
in: Cummins Marine Engines
3 RepliesNovember 6, 2019 at 6:12 pm I was able to do a little grinding of the mount under the pump and the SMX pump goes off/on without any issue.Last Post by:
posted: 4 years ago
-
Slight overheating. Running hot. 195 degrees.
This topic has 12 replies, has 4 voices, and was last updated by
4 years ago
July 5, 2019 at 9:29 am Thank you all in advance. I have been reading endlessly. And havent found my answer yet. Ok guys I’m having an overheating problem with my 250hp cummins. Cpl # 1570. It has been running 191 degrees @2300 rpm and 195 degrees @ wot about 2850 rpm. Any low rpm below 1200 it hangs around 180 -185. I verified the gauges accuracy with a IR. Temp Gun. I found 190 and 194 degrees. Since I bought it a few months ago I have replaced the following it…
Started by:
in: Cummins Marine Engines
12 RepliesJuly 14, 2019 at 8:03 pm Just wanted to thank you guys. We finally got to put some hours on this boat and enjoy it Saturday. Ran about 130 miles round trip to West End same day. Everything seemed good. temps held @ 191 @ 2300 and coolant after cooled down seems to be @ the exact levels. I will get the Jwac serviced after summer break. And will order 160 Tstat with my next order as well. It can’t hurt in my eyes. I did how ever hit the prop on the trailer bunk pull…Last Post by:
-
Cummins Killer Dowel Pins
This topic has 2 replies, has 3 voices, and was last updated by
4 years ago
June 9, 2019 at 9:12 am Hello I have two 2004 6BTA 5.9-M3’s with Bosch PES6P120A injection pumps. They have about 650 hours on them. Do I need to worry about the “Killer Dowel Pin” issue? Does Seaboard Marine sell a kit for this issue? Thanks for your time. Chuck Meridian 490 C Worthy. Seattle, WA
Started by:
in: Cummins Marine Engines
2 RepliesJune 9, 2019 at 12:29 pm Chuck I posted with PICS on this site and Boat Diesel site about this problem. I would recommend you search and read those post. My twin Cummins 1998 6BTA’s had about 650 hrs when one engine dropped the pin and it ruined the timing gear case. The inspection due to an oil leak found case cracked 11 o’clock position with the metal pushed out from inside the case. It had to be replaced all in $1000-1200 repair if I remember. The other…Last Post by:
posted: 4 years ago
-
Drain antifreeze change to 160 Deg. thermostats
This topic has 1 reply, has 2 voices, and was last updated by
4 years ago June 5, 2019 at 6:24 pm How much antifreeze needs to be drained out on 6BTA’s 330’s to change the thermostat?
Started by:
1 ReplyJune 5, 2019 at 7:15 pm Maybe 3 gallons (about 50%) ? TonyLast Post by:
posted: 4 years ago
-
Cummins 6CTA8.3 Battery Replacement
This topic has 4 replies, has 4 voices, and was last updated by
June 3, 2019 at 4:21 pm Looking to replace the 5 batteries in our 2003 420 Sundance’s. In my research the 6CTA8.3’s mention 1250 CCA. Anyone here have inputs on AGM Group 31’s or other batteries recommendations? Thanks very much.
Started by:
in: Cummins Marine Engines
4 RepliesJune 5, 2019 at 5:39 pm Yes more are less every 3-4 years. House Deep Cycle is normally 3 yrs as they are working off the inverter. Service twice a year clean and use distilled water only. My inverter is a multi-stage charger so it keeps them charged with out over charge. My older onboard charger stays off unless I have gone through a real deep discharge. Then its on only until batteries are at full charge then off. As Rob said better deal unless hard to get to.Last Post by:
-
SMX Pump Install
This topic has 5 replies, has 4 voices, and was last updated by
5 years ago April 3, 2019 at 11:24 am Hi, I am thinking of installing a couple SMX pumps on a pair of 6bta 370’s. Nothing ‘wrong’ with the sherwoods, just figured they were tired and rather than just rebuild them, I’d upgrade them. Have read tony’s tips on the subject. Still have a couple questions before I move forward. Who has slick ideas on how to jack up the front port corner of the engine? I was thinking of rather than trying to jack it up I mi…
Started by:
in: Cummins Marine Engines
5 RepliesApril 15, 2019 at 9:14 am If the lower nut doesn’t move that tells you that the height of the engine hasn’t changed as a result of your work. As far as the engine moving laterally only if all of the studs on the isolators were installed vertical with the engine and not angled in or out or whichever way, only then will the motor probably stay put. If the isolators are angled, then as they were tightened up initially there could be some “Spring” i…Last Post by:
posted: 5 years ago
-
Marine AC
This topic has 10 replies, has 4 voices, and was last updated by
5 years ago
February 14, 2019 at 8:21 am My AC pump and strainer are mounted in a near impossible location to access/reach in the boat, I am contemplating moving the strainer to an area that is essentially at the same height as the AC unit itself,the pump will remain at the same level below the waterline. Weed can and does often fill the strainer in a matter of hours,and getting to it requires a midget on board and ends up being a messy affair, I have a great location I can move it to…
Started by:
in: General Discussion
10 RepliesFebruary 17, 2019 at 7:22 am Rodger, Thanks for the input,I have a freshwater flush tee on the intake side of the pump now I have used it to prime the pump on occasion,the preferred time for the strainer to block and the AC to shutdown seems to be around 2AM and the bride goes on the warpath… To clean the strainer I have to raise the entire helm section and crawl across one of the motors reach down and do it entirely by feel.The other option is to open the small access hatc…Last Post by:
-
SMX water pump impeller change
This topic has 14 replies, has 6 voices, and was last updated by
5 years ago
December 13, 2018 at 11:23 am I am attempting to replace the impeller from my SMX pump. I installed it 3 years ago and in order to remove the old Sherwood pump I had to remove the motor mount. As you can see the impeller can only come out 3/4 of the way due to the fuel hose that comes off of the fuel filter and goes to the injection pump? (Bosch). I need to remove this hose to finish and it appears it would be easiest to remove the banjo fitting at the pump. (second picture …
Started by:
in: Cummins Marine Engines
14 RepliesDecember 21, 2018 at 10:49 am Kevin, I see you had the issue with the impeller blades expanding inside the case as you push the impeller in. I’ve found that the easiest way to deal with that is to remove the top hose flange (hose to the fuel cooler). That exposes the interior of the case, and you can bend the blades as needed when you push in the impeller.Last Post by:
posted: 5 years ago
-
SMX1730 impeller replacement
This topic has 5 replies, has 5 voices, and was last updated by
5 years ago December 8, 2018 at 12:48 pm I have a pair of SMX1730 pumps I’m replacing the impellers in. The old impeller came out pretty easy, but I’m having trouble getting the new impeller in. Is there a secret to compressing the tabs enough to get them in the housing? Thanks, Scott
Started by:
in: Cummins Marine Engines
5 RepliesDecember 10, 2018 at 7:24 am MATTHEW SCOTT WARD wrote: Thanks for the advice. Due to limited space, I’ll give the zip tie method a try. Thanks! Scott Try to take some pics while you’re at it and post them here. Always helpful to others..Last Post by:
posted: 5 years ago
-
QSB6.7 trolling
This topic has 10 replies, has 4 voices, and was last updated by
5 years ago November 19, 2018 at 8:12 am I have 2013 QSB 6.7’s. I’d like to know if slow trolling in and out of gear is OK. Also, what is involved with installing trolling valves. Thanks.
Started by:
in: General Discussion
10 RepliesNovember 26, 2018 at 1:50 pm Sorry for the delay, I was out of town and off the grid for the holiday. The kit doesn’t specifically come with instructions but we can do our best to walk you through it remotely. I would say you need to be reasonably mechanical, not that its exceedingly hard to install a trolling valve, but if you cross thread the sending unit, or strip a bolt that holds the assembly to the gear, or anything like that it could be a costly or at least a t…Last Post by:
posted: 5 years ago
-
Battery Opinion
This topic has 9 replies, has 7 voices, and was last updated by
5 years ago November 1, 2018 at 11:52 am Looking for opinions on use of one 8D battery verses two 31 series batteries for one bank. Room and accessibility not an issue. Mainly interested in the house side. Thanks, Jim
Started by:
in: General Discussion
9 RepliesNovember 9, 2018 at 10:12 am This not a new build. 30 single engine downeast boat, 330B power. DC requirement on the house side is: Furuno TZT2 15L MFD. Fish finder function runs all day. Radar runs when engine runs, Additional Fishfinder FCV 295, runs all day. Furuno GP33 VHF radio Lighting runs when the engine runs for the most part. Three durabrite mini’s, couple of small rigid floods, couple of cabin lights, and running lights. All lighting LED’s. Bilge pum…Last Post by:
posted: 5 years ago
-
Throttle creeping back
This topic has 5 replies, has 3 voices, and was last updated by
5 years ago October 30, 2018 at 6:15 pm I have Cummins 6bta 315hp. The starboard throttle creeps back when underway, and has a little spring back just above idle speed. Is there an adjustment that I can do to stiffen up the throttle? Thank you
Started by:
in: Cummins Marine Engines
5 RepliesNovember 3, 2018 at 6:46 pm A better pic attached of what you have…………………….Basically Cummins came up with an extended arm and “balance spring” to operate the throttle on the ND injection pumps.. It “kinda works” but in many cases you have to play the the tension of the balance spring or add a small 2nd spring to take out some of the “balance…..This is something you just need to learn and mo…Last Post by:
posted: 5 years ago
-
Clean and paint engine 20yr old 6 BTA´s and engine Room Fiberglass
This topic has 1 reply, has 2 voices, and was last updated by
5 years ago October 30, 2018 at 6:08 pm Your tips and tricks? Seems like an easy question but after paying for an engine detail in order to paint realized it will take a lot more cleaning prep to do the job right. Detailer was afraid to use anything stronger than Dawn and Simple green mixed with light water wash down. Upon inspection no way you could paint, paint would not stick well as still too much oil film and residue in around the nook and crannies. I have used Gunk or Purple pow…
Started by:
1 ReplyNovember 1, 2018 at 3:39 am Rodger, There is no one method to accomplish what you want to do, as you have already figured out. Strong solvent in some areas, “purple cleaners” in others, steam cleaning, a “wire brush”, an “air compressor” blow gun, , etc etc.. It all comes down to one thing “ELBOW GREASE” as the common denominator, mixed in with common sense.. Post some pics, “before & after” when you are do…Last Post by:
posted: 5 years ago
-
How to test Barry Cummins Motor Mounts
This topic has 13 replies, has 4 voices, and was last updated by
5 years ago July 16, 2018 at 6:52 pm Two 20 yr. old 6BTA’s 2000hrs with Barry Mounts. others have suggested mounts at 20yrs have to be bad. Is there any way to test the mounts other than look for engine vibration and engine movement when running ? They look good the center pin is mostly centered when not running. Have a problem with PYI Dripless packing alignment to shaft is not as centered as it could be even though engine alignment has not changed. PYI says stern tube is not…
Started by:
13 RepliesJuly 25, 2018 at 6:43 am I don’t think a few thousandths of an inch on something that is compressed ~1″ is an issue. How about some real pictures (not thumbnails like your priors) where we can actually see the entire setup, from the tranny coupler back to shaft log. Would be good to see what the spacing is and how much shaft you have exposed there. Maybe your shaft log misalignment is just too much for this complicated setup to work for you and to pass th…Last Post by:
posted: 5 years ago
-
Engine starve 2100rpm high low fuel pressure
This topic has 13 replies, has 5 voices, and was last updated by
5 years ago May 31, 2018 at 11:22 am Long story on my issues but want to have all the facts out there. I have a 2011 Back Cove powered with Cummins QSC 8.3 600HP turbo. Early last summer got caught in 8-10 foot seas- dislodged a lot of crud, engine started starving at +1800 RPM. My turbo also separated at the exhaust elbow due to the rough ride (slight) so soot and black smoke. Added a support bracket for the elbow (from Seaboard) and new metal ring gasket turbo to exhaust. (origin…
Started by:
in: Cummins Marine Engines
13 RepliesJune 8, 2018 at 12:08 pm Yes, should be doable as long as it’s not time sensitive (they have many many projects in the works right now). Email Tony direct: tony@sbmar.com. https://www.sbmar.com/services/custom-marine-exhaust-design/Last Post by:
posted: 5 years ago
-
Pair of 6BTA's 1998 2000hrs
This topic has 4 replies, has 2 voices, and was last updated by
May 30, 2018 at 6:45 pm Engines always in fresh water run good in a 1998 42’ Bayliner Avanti. Some white smoke on startup normal until hot. All fluid levels and temps and pressures normal. No oil usage. Started picking up a pungent burnt or burning smell when at slow cruise which in the 1500 hrs. of useage I had never smelled before. Previously might get a station wagon diesel smell but not burnt smell. Have done all recommended services on all coolers, fluids, …
Started by:
4 RepliesMay 31, 2018 at 11:36 am Yes slow cruising allows for engine temps to reach 175-180D. River temp around 75-80D currently. At 2000-2400 RPM cruise engine temps around 190-195D depending on River temps which can get into low 90’s by end of summer. Just serviced all coolers. Have not been able to run any distance at higher RPM’s this year. All temps seem normal and consistent with the 15 yrs. I have run boat.Last Post by:
-
Battery Question
This topic has 6 replies, has 6 voices, and was last updated by
6 years ago
April 16, 2018 at 11:04 am Hi Guy’s I am looking at changing my 8D batteries. They are in a bad spot and to heavy for me to be dragging around. I was thinking about 4D’s or wiring two group 31’s together? The motors are QSC 8.3. Does anyone have any suggestions on what is the better way to go. The generator and battery charger are on the whole time the boat is away from the dock. Thanks George
Started by:
in: Cummins Marine Engines
6 RepliesApril 17, 2018 at 7:34 am Thanks guys for all the input. I think I will be going with the group 31 setup. I think I can manage those the best.Last Post by:
-
Impeller remova QSB 5.9l
