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- Cummins Marine Forum Topics
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Barry Mounts
This topic has 15 replies, has 3 voices, and was last updated by
7 years ago November 27, 2016 at 6:32 am Hi guys, One of our engines 6Bta 370 has a vibration when underway, Ā I missed getting a pic of the mount that looks like it has failed but got some of the other mounts. My question is what is the minimum height for a loaded barry Mount? I measured from the top of the stringer to the bottom of the engine bracket. Ā This was 85mm. Ā can the Barry mount accommodate this? Pictures of existing mounts unfortunately didn’t get …
15 RepliesDecember 22, 2016 at 12:20 pm Andrew, Every engine room is going to be different as to how this is done due to access, clearances, etc.Ā Working one mount at a time and to just take the weight off the mount, like a 1/16″ lift, you may be able to work with wood blocking under the corner of the pan and a wedge and hammer to get that slight lift to get the weight off the mount.Ā Just remove the top nut from the mount first. If you need to do more than that then you should…Last Post by:
posted: 7 years ago
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175 RPMS OFF MY MAX OF 2800? HELP!
This topic has 15 replies, has 4 voices, and was last updated by
7 years ago
December 15, 2016 at 9:21 am Hello all I am looking for some guidance here, I have year 2000 Cummins 6BTA’s in my 28 Carolina classic with 1400 hours on them. 1000 service done. Ā At the end of this Season I was showing my port engine off the max by approx. 175 RPMS. At max throttle my Port was 2625 and my Starboard was 2760. Max for the motors is 2800. I thought I had a prop issue. Finding out from wild cat both the props were the same this tells me I have a port Engi…
15 RepliesDecember 21, 2016 at 9:34 am I WILL BE TO THE BOAT ON JAN 1ST I WILL GET THESE PICS FOR YOU. -AUSTINLast Post by:
posted: 7 years ago
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Aftercooler and heat exchanger maintenance
This topic has 15 replies, has 2 voices, and was last updated by
7 years ago December 9, 2016 at 3:28 pm pulled my heat exchangers and aftercooler today .bought the smx kit .is it essential to pull the cores out of aftercoolers.
15 RepliesDecember 20, 2016 at 6:20 pm I’ll put it on my Christmas listLast Post by:
posted: 7 years ago
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Diesel Slick in Exhaust 6CTA8.3 480 CE
This topic has 3 replies, has 2 voices, and was last updated by
7 years ago December 20, 2016 at 7:40 am Can anyone help me identify the cause of a small amount of diesel slick coming out of the SB engine.Ā I haveĀ a 2006 express Luhrs with twin 6CTA8.3 480 CE’s with only 710 hours.Ā I have had the fuel tanks polished and the fuel filters are all new.Ā The SB engine has recently started bouncing about 10 rpms up and down at idle when cold and level out after a few minutes.Ā It also hunts around 1200 RPM and levels out after that.Ā I have not h…
3 RepliesDecember 20, 2016 at 3:26 pm Coolant temperature and exhaust temperature are two different animals so the fact that the two engine’s coolant temps are the same does not speak to why the visible exhaust steam differs between the two engines. The max temp you should get measuring the wet (cooled) exhaust is 140degF, less is better.Ā Measure the port and starboard and measure around the circumference as perhaps one showerhead is doing a better job of spray and mixing the…Last Post by:
posted: 7 years ago
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330 6BTa – cooling problem
This topic has 8 replies, has 3 voices, and was last updated by
7 years ago
December 15, 2016 at 11:49 am 330 HP cooling problem I have a twin installation of 330Hp 6BtaĀ“s. After a long layup, as precautionary maintenance, the sea water pump was replaced and all the coolers cleaned and serviced so I know the sea water system is working 100% (seawater strainer also not restricted. Injectors were removed and professionally serviced and found to be good. Thereafter I got Cummins in to do a health check. Blow-by found to be within specification but the …
8 RepliesDecember 20, 2016 at 8:10 am Here is a scetch of my home made test gadgetLast Post by:
posted: 7 years ago
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Fuel bleed after filter change QSC
This topic has 1 reply, has 2 voices, and was last updated by
7 years ago December 19, 2016 at 11:37 pm On a QSC after an on engine filter change I have heard two ways to bleed fuel and prime engine. 1. Open bleed screw on top,of filter housing and cycle key until fuel comes out. ReferenceĀ http://www.sbmar.com/articles/how-to-bleed-fuel-on-a-cummins-qsl-9-qsc-8-3/ 2. Simply cycle key on and off a few time to allow the pump to push fuel through. So what’s the properĀ way? Phil
1 ReplyDecember 20, 2016 at 7:12 am It’s not what is proper or not proper. It’s as matter of getting it to bleed easily.. 1) Changing just the on-engine filter–Loosen just the outlet screw to allow air to escape thru the threads. 2) If changing Ā filters OFF the engine, then remove the IN-Screw on that filter head. By far the easiest way for both is to install a “squeeze bulb” priming system.. Ā 1-3 minutes for all vs. 15-30 minutes…Last Post by:
posted: 7 years ago
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480 CE Zincs
This topic has 4 replies, has 3 voices, and was last updated by
7 years ago December 18, 2016 at 4:22 pm As I’ve done the maintenance since purchase the only zincs to deteriorate are the bottom aftercooler zincs.Ā The top aftercooler and heat exchanger zincs never show any sign of sacrifice.Ā Only calcium like buildup.Ā Do I need to continue with these or just plug? Mike
4 RepliesDecember 19, 2016 at 6:17 pm All looks pretty normal to me for engine sitting with saltwater in all the components.. TonyLast Post by:
posted: 7 years ago
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6BTA Coolant
This topic has 1 reply, has 2 voices, and was last updated by
7 years ago December 19, 2016 at 12:04 pm 6BTA 370. Currently the coolant is ES Compleat EG. It was changed 5 years ago, approx. 800 hrs of running in those 5 years. I understand that the B series engines are not coolant sensitive, parent bore engine and I could have used regular green anti-freeze but that is not my question. My question is how long will the coolant last OR should I change now?Ā If you look at the specs for the ES Compleat they state something like 1,000,000 miles or 40…
1 ReplyDecember 19, 2016 at 6:12 pm IMO, Your coolant is good for another 5 years.. TonyLast Post by:
posted: 7 years ago
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5.9b 330hp bus heater install
This topic has 6 replies, has 3 voices, and was last updated by
7 years ago December 18, 2016 at 1:22 pm going to do install this week and am going to order fittings.. I looked at the pics of the taps on this site. Looks like the supply in the turbo blank on manifold Ā is 3/4″ pipe thread and the return by water pump suction is 1/2″ pipe . Ā Could someone confirm these pipe sizes? I don’t work with pipe a lot. Also the vent from the turbo blank to the exp. tank. Ā What pipe size is that?
6 RepliesDecember 19, 2016 at 2:43 pm Further to Tony’s post above….Here is the chart I use: And the caliper ($40 on Amazon Prime):Last Post by:
posted: 7 years ago
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QSB6.7 HE and AC Maintenance
This topic has 7 replies, has 4 voices, and was last updated by
7 years ago
December 12, 2016 at 9:38 am QSB6.7 480HP-TurnedĀ 3 years/600 hours on my engine just before hauling for winter and thought might as well hit the cooling system for a checkup. The aftercooler weeped a few drips per hour from factory so it was pulled apart and greased up early on, nothing done to the HE. Notes below on findings: -AC came right apart, could push the core out with a couple thumbs, couple feathers, small eel grass, and a few evergreen needles piled up, not bad. …
7 RepliesDecember 15, 2016 at 9:36 am 10-4, have a Buck Alonquin screen unit coming for the hull side. I’ll keep the inside of the boat just as is, I like the Vetus for ease of dockwater engine flushing. Hopefully get the HE and AC greased and back together this weekend.Last Post by:
posted: 7 years ago
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Blow by test for 370b
This topic has 6 replies, has 3 voices, and was last updated by
7 years ago
December 9, 2016 at 4:41 pm Had a couple question on the blow by test for a 370b. I read Tony’s article on the test but have heard from other people that I should use a larger orifice when testing a 370B. I think it was .301 vs .221 orifice. Does it really matter? And if i use a larger orifice will that change the number im looking for, such as In water at the manometer. Also i believe the tests needs to be done while the engine is under load? So it needs to be runni…
6 RepliesDecember 15, 2016 at 8:15 am Like Tony said. Manage it through SeaBoard’s EnviroVent and go fishing.Last Post by:
posted: 7 years ago
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450 Diamond series help
This topic has 2 replies, has 2 voices, and was last updated by
7 years ago
December 7, 2016 at 10:51 pm Let me begin by saying I am an aging sailboat guy preparing to “transition” to power who acknowledges being at the bottom of the heap with regard to knowing much about powerboats or bigger diesel engines. Thus I’ve emailed Tony, joined both this forum and boatdiesel.com to begin filling the knowledge deficit. With that introduction, here is why I’m posting on this forum. Presently I am considering buying a 1999 boat with …
2 RepliesDecember 13, 2016 at 3:21 pm Thank you Tony. It’ll be awhile before we do this deal (selling another boat first). If we reach agreement on price, I’ll video the start up and send to you. Probably call you at that time as well.Last Post by:
posted: 7 years ago
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taking off exhaust riser question
This topic has 7 replies, has 4 voices, and was last updated by
7 years ago December 10, 2016 at 2:34 pm I have to remove my turbo and exhaust riser (6bta) and have a riser made. Local company wants $3200 or more…its always more. So I’m doing it myself! I always get a price first to decide if its worth my time and this is worth my time. Anyway, see the attached picture. I’m told this hose is really tough to get off. I plan on taking the turbo and riser off as one unit and then bringing it home to separate. Getting a quote from DeA…
7 RepliesDecember 12, 2016 at 1:16 pm Nerf football…good idea. The port side exhaust hose has aĀ strap around it and screwed into the floor above for support. I wasn’t sure why one side had this and one didn’t but that riser was replaced last year so I’m guessing they supported it above the waterline with the strap and just left it there. I’ll do the same. A local mechanic wanted to charge me $2200 for the riser when I just ordered one for $1290. Not sur…Last Post by:
posted: 7 years ago
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QSC 490 to ZF286A
This topic has 8 replies, has 2 voices, and was last updated by
7 years ago
December 3, 2016 at 6:32 pm Need information on connecting QSC 490 to ZF286A.Ā The gears have Flywheel coupling & SAE3 housing adapter.Ā What else is used in this connection and is the SAE 3 the correct one for these engines?
8 RepliesDecember 7, 2016 at 8:22 pm Please just remove my post.Ā I must of have misunderstood the purpose of this forum.Ā When I called to inquire about ordering some parts the person on the phone instructed me to post any questions I might have to promote the forum.Ā It seems to have bothered you which wasn’t my intention.Last Post by:
posted: 7 years ago
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Valve adjustment – QSL9
This topic has 1 reply, has 2 voices, and was last updated by
7 years ago December 6, 2016 at 1:11 pm How often should valves be adjusted on the QSL9 Engine?
1 ReplyDecember 7, 2016 at 6:38 am Per the Book———————5000 hours (also applies to the QSB’s and QSC’s).. TonyLast Post by:
posted: 7 years ago
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Cummins ETS on '07 QSB 5.9
This topic has 3 replies, has 2 voices, and was last updated by
7 years ago December 6, 2016 at 12:32 pm Can a Cummins ETS binnacle setup be swapped out/added to a boat that currently has separate electronic shifters/mechanical throttle controls?Ā The separate shift/throttle is on the 07 Meridian 391, but in 08 they switched to the ETS binnacle on the same motors. Id consider doing this to add the sync feature on the ETS, and removing the shifters currently there would free up some space at the helm for some electronics. Thank you!
3 RepliesDecember 6, 2016 at 4:30 pm No sweat… the conversions are straight forward in most cases but you will have to sort out the details when the time comes… thanksLast Post by:
posted: 7 years ago
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Oil capacity
This topic has 1 reply, has 1 voices, and was last updated by
7 years ago
December 6, 2016 at 1:29 pm Hi – We just pumped the oil out of our 6cta 8.3’s cpl 1282. Ā The spec sheet says 18 quarts pan capacity, 23.2 quarts total system capacity. Ā We got ~ 4 gallons per engine, which seems low. Ā The dip stick was complete clear after we pumped the oil out, and the we have an oil changer system which pulls from the drain plug on the pan. Any ideas why my volume appears lower than the spec sheet? Ā Level was just below the top of the dipstic…
1 ReplyDecember 6, 2016 at 3:37 pm Tony has a very nice writeup on oil pan capacities that I hadn’t spotted before. Ā That cleared it all up for me. Ā Best Ā JimLast Post by:
posted: 7 years ago
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Convert Fresh water cooling to keel cooling Cummins 6BTA
This topic has 2 replies, has 2 voices, and was last updated by
7 years ago
December 5, 2016 at 12:51 pm I run my boat in very silty and shallow sandy conditions and I cannot keep my raw water pump working so I would like to change to keel cooling. My current setup runs raw water through my aftercooler, gear oil cooler, heat exchanger and out the exhaust elbow. I am wondering if I can just use my raw water pump to circulate coolant through my aftercooler, gear oil cooler, engine and then through an over sized fernstrum keel cooler? I understand it …
2 RepliesDecember 5, 2016 at 7:09 pm Thank you David for the reply. Ā So it sounds like the coolant circulation pump should have enough power to push coolant through the engine, transmission oil cooler and keel cooler? And if that works than the aftercooler could be connected to a separate keel cooler and circulated with the raw water pump. I wish this site had a picture of the coolant routing with arrows drawn in showing the flow. I saw a picture like this but it was for fuel flow.…Last Post by:
posted: 7 years ago
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Cummins 4BT
This topic has 16 replies, has 3 voices, and was last updated by
7 years ago
November 11, 2016 at 8:19 am I haveĀ pair of 4BTA cummins in a pursuit,apart from the walker airsep’s leaking oil and the cold start pre-heater’s Ive had 1000 hours of virtually trouble free motoring. I’m aware of the 1000 hour service required,but in doing some research on it I see there was a lot of injector issues with these engines when first installed. One of my injectors has started to weep (externally) and I’m looking at the options to service…
16 RepliesDecember 5, 2016 at 6:28 pm Tony I pulled one of the aftercoolers on the weekend,and was pleasantly surprised,no corrosion at all! Guess that freshwater flushing system I installed paid off! On the air side it was better than I was expecting,will get it all cleaned up and refit. I also installed the seaboard marine envirovent kits,your article on crankcase ventilation perfectly described what I was seeing with my “B” engines fitted with airseps,I’m glad t…Last Post by:
posted: 7 years ago
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"What are the real differences between the 6BTA 315/330 & the 6BTA 5.9 355/370 D
This topic has 3 replies, has 3 voices, and was last updated by
7 years ago November 30, 2016 at 3:14 pm I runĀ a 27 foot H&H Osmond Down East boat as a 6 man charter boat. The boat is powered with a 2001 330hp Cummins 6bta Diamond Series engine. CPL1975 The engine has just about 5400 hours on it. Overall it runs well. Max rpm are 2800 at start of season but seems to drop off to around 2700 mid season which I attribute to some growth and slime. The boat is kept in New Jersey. The propeller is a diameter of 23″ and a pitch of 21″. Ful…
3 RepliesDecember 5, 2016 at 7:45 am Frank, You will need to have your pump re-calibrated to a either a CPL 2208 or CPL8457 Spec and get new injectors for which ever CPL the shop can calibrate it to. This is GOSPEL–Once you do this you will need to remove at least 2″Ā if not 3″ of pitch as now the engine will need to spin up to Ā (accurate) OVER 3100 RPM and do it easy.. The extra HP ( from 315 to 355) is there, Ā BUT ONLY above 2800 RPM. Ā If you do not…Last Post by:
posted: 7 years ago
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Barry Mounts
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