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Cummins:B Series -
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Fuel Shutoff Valve |
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Fri Nov 20 09 6:42 PM |
Yesterday
06:42 PM |
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Norm
I had to replace fuel shut off Solenoid p/n 3919422 on my 370b that went south. The replacement part (crossed several times) is 4089574 which includes a new mounting bracket. The new mounting bracke..... |
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NO Responses....
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Cummins:B Series -
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Oil Analysis Opionions |
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9
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Fri Nov 20 09 5:12 PM |
Nov 18 2009
04:34 PM |
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Gary_2
Hi,
I had a survey done last week along with an oil analysis. The boat is a 32 ft ~13,000 lbs, modified v (~18 degrees dead rise). 12ft beam with a small bridge. The engines are 1985 Cummins 6-BT 2..... |
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9 Responses....
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Nov 18 2009
08:41 PM |
#1 |
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Maka Koa
There is lots to read about oil samples (do a search).
I went through the same thing and had an oil sample done when I bought my boat & then again at 50 hours after an oil change.
Your oil sampl..... |
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Nov 18 2009
08:47 PM |
#2 |
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Maka Koa
Sorry to get so wordy...one more thing...
In my opinion (sorry to offend anyone). Screw the surveyor, it was a waste of money. If I had it to do all over again, I would take a well qualified Cummi..... |
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Nov 19 2009
01:08 PM |
#3 |
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Gary_2
Thanks for the feed back Maka.
I did do a search prior to posting. But, didn´t find much specifically on actual readings. I did get the message that most feel a single test isn´t worth much. But, I..... |
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Nov 19 2009
07:34 PM |
#4 |
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Paul Foulston
This is EXACTLY what pisses me me off about worthless one off oil sampling, more questions asked than answers given.
Paul |
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Nov 19 2009
09:41 PM |
#5 |
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Maka Koa
One sample won´t tell you enough.
Low RPM?
1. Is the boat Propped Right?
2. Clean Bottom & Running Gear?
3. Clean Aftercoolers, Heat Exchangers?
4. Clean Fuels Filters, Good fuel?
That..... |
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Nov 19 2009
10:07 PM |
#6 |
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Lijoe
What a single oil sample is really good for is showing if the is fuel, coolant or seawater in the oil, all of which are problems in need of attention - what it won´t do is tell you much about the inte..... |
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Nov 19 2009
10:32 PM |
#7 |
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Bill D l
yup wasted $$dough$$ on an oil sample.
Of course, being new to used diesel ownership...I had an oil sample done before I bought my Blackfin with used (550 hr.) 6BTA 370s.
Oil analysis came back OK...... |
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Yesterday
03:42 PM |
#8 |
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Gary_2
Hi Bill,
By "marine age" on the hang ons do you mean the age of the accessories(water pump, turbo, fuel system)?
Thanks,
gary |
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Yesterday
05:12 PM |
#9 |
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Bill D l
Yes, a "Tony Athens" term!
I roasted a 6B 370 Aug 08 do to marine age. 2 bolts snapped off the belt idler pulley, lost the engine coolant..Poof!
I think you realize that the 6B base engine..... |
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Cummins:B Series -
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CPL 2208´s: New turbocators installed |
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5
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Fri Nov 20 09 2:54 PM |
Nov 9 2009
07:07 PM |
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Timothy H Fanney
CPL 2208/370B´s. 9 years old, 1875 hours. Just installed turbocators. Hull cleaned. Water temp 57 deg. Normal fuel load. Minimal smoke and strong pull thru rpm range getting on plan. No load rpm-3300...... |
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Nov 16 2009
10:51 PM |
#3 |
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Timothy H Fanney
Clark, thanks for the reply. Very familiar with the aftercooler maintenance from Tony. Mine are due for it this spring. I use Tony´s envirovent system so they should be very clean on the air side, but..... |
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Nov 16 2009
11:46 PM |
#4 |
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Bill D l
Tim, I installed like new 370s in my Blackfin this past spring. From hour one of intall, and the engines are basically new REMANS, the turbocators and EGT were as follows.
875 EGT from 2200 to WOT 30..... |
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Yesterday
02:54 PM |
#5 |
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Timothy H Fanney
Appreciate the replies. I´ll be doing my aftercoolers this coming March. I´ll re-check boost/EGT then and probably rebuild the turbos if I don´t get to 30 boost and lower my EGT
tim |
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Cummins:B Series -
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330 BTA Hard Starting |
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15
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Fri Nov 20 09 1:23 PM |
Nov 18 2009
12:53 PM |
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Rwil
Engines have 1600hrs and when cold below 60 deg port starts hard with lots of smoke runs ok once warmed up normal smoke and power. When warm starts ok. This has gotten worse from 500 hrs. Could an in..... |
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15 Responses....
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Nov 18 2009
01:29 PM |
#1 |
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Tony Athens
The #1 reason a diesel starts easily is the heat that is generated during the compression of air in the cylinder and then the "quality of fuel" that is sent into that heated air. Lower that..... |
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Nov 18 2009
01:39 PM |
#2 |
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Maka Koa
"The simple solution to mitigate the issue is to add heat to your engine BEFORE your start--Consider adding 250W´s to the oil pan 24-7-365 when at the dock.. That will give your engine an instant..... |
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Nov 18 2009
02:01 PM |
#3 |
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Jim D
Tony is referring to a Wolverine 250W Model 16 oil pan heater - they glue to the bottom of your oil pan and keep the engine toasty warm and make for easy starting all the time - We even eliminated our..... |
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Nov 18 2009
05:27 PM |
#4 |
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Rwil
Tony thanks for your reply. I have mitigated the problem with heat as you describe. Since the Port engine runs good full power no oil usage or other fluid issues and the Starboard engine seems to be ..... |
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Nov 18 2009
05:58 PM |
#5 |
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Jay Leonard
Don´t overlook a battery just starting to get weak. I have been there many times with 6BTs in trucks. The battery can test "good" by a conventional mechanics load tester, but be weak enough ..... |
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Nov 18 2009
06:10 PM |
#6 |
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Rwil
Yes the engine battery starts both engines is fairly new and in listing seems to turn both engines the same. The starboard engine starts easy even when faily cold. |
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Nov 19 2009
02:04 AM |
#7 |
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Tony Athens
If you want to eliminate cranking speed as the culprit, there is really only one way.. Pull the fuel solenoid circuit, be ready to strobe the engine, and crank it-----------150 or more RPM is the numb..... |
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Nov 19 2009
03:40 AM |
#8 |
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Bill D l
Rwil, it´s ALL about heat in the engine before starting..+ a combination of other minor "old age/hours" issues as Tony stated.
Tony provided me with a pr. of 250 watt block heaters for my 3..... |
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Nov 19 2009
07:30 AM |
#9 |
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Paul Foulston
We need to get some facts straight.
B is an easy starting direct injection engine, I do not have spec to hand as you have not posted your CPL but so I cannot quote your spec for unaided cold start ..... |
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Nov 19 2009
07:43 AM |
#10 |
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Viku
I had the same problem with my CPL970 - difficult starting when cold, full power and no smoking when warm. The reason appeared to be worn exhaust valve seats. After cylinder head repair it now starts ..... |
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Nov 19 2009
01:15 PM |
#11 |
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Rwil
Paul thanks for your reply. I have had this boat since 500hrs. My temps here in Ky go from teens in winter to 80-90´s summer. I keep heat on engines below 50 deg. Engines are run year round except i..... |
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Yesterday
04:30 AM |
#12 |
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Frank Gee
Hi Rwil:
I don´t know if this applies to your situation, but if the engine oil hasn´t been changed in a while, and has accumulated significant hours past the maintenance spec interval, that can be ..... |
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Yesterday
08:08 AM |
#13 |
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Paul Foulston
Frank,
Simple answer is no, lube does not break down.
"B is real sensitive to drawing air back up the return line if fuel system not 100% and will certainly cause symptoms you speak of&quo..... |
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Yesterday
01:15 PM |
#14 |
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Rwil
I sure appreciate all the feedback on this issue that is what makes this site so great. As for engine service the engine oil has been changed every 100-150hrs.
Paul not sure I understand your comme..... |
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Yesterday
01:23 PM |
#15 |
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Rwil
Sorry I re-read Paul´s oil comment and understand what he is saying. Can anyone also comment on the question of "could an injector leak off after shut down causing to much fuel in a cylinder&quo..... |
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Cummins:B Series -
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All Show and no GO |
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4
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Thu Nov 19 09 12:45 PM |
Nov 17 2009
10:32 AM |
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Smokey
370B, cpl 2208. In attempting to try out my new repairs on my starboard engine, I was up to cruise for only a few seconds and my port engine just instantly dropped to idle. I cannot get to the throttl..... |
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4 Responses....
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Nov 17 2009
06:09 PM |
#1 |
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Ski in NC
Most likely thing is that the cable end or cable bracket fasteners backed out. Get a shaving mirror, duct tape and a wire coat hanger. Auto parts shops, hardware stores will often have mirrors on st..... |
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Nov 19 2009
01:08 AM |
#2 |
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Blackfinmike
You could also check it with using a digital camera. |
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Nov 19 2009
12:40 PM |
#3 |
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Smokey
I think there is only one thing more dumb than designing a boat that you have to remove a couch, storage area, and a A/C unit to check and engine zinc, etc. Buying one. Never again. |
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Nov 19 2009
12:45 PM |
#4 |
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Jay Leonard
My previous boat had a large plastic mirror in the head.I removed it and cut it up to use in the engine room. I even mounted a piece in the bilge with double sticky tape so I could see the outside of ..... |
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Cummins:B Series -
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Max RPM Cummins 6BTA 5.9 |
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3
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Tue Nov 17 09 11:16 PM |
Nov 16 2009
03:23 AM |
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Maka Koa
What is the maximum (WOT) RPM for a Cummins 330 HP 6BTA 5.9? |
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3 Responses....
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Nov 16 2009
04:17 AM |
#1 |
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Tony Athens
Rated RPM-- 2800 (minimum)
Prop to 2900-2950 loaded as you use the vessel
No Load-- 3200-3250 |
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Nov 17 2009
10:36 PM |
#2 |
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Maka Koa
In trying to determine why my engine ultimately failed I have come up with 2 distinct possibilities and or contributors.
1. Over-propping: Lightly loaded (my initial sea-trial) the engines turned 2..... |
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Nov 17 2009
11:16 PM |
#3 |
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Bill D l
Maka Koa,
there are many many many members that have "steep $$$$ learning curves" on buying, running and maintaing diesel engines.
I was one of the "steep $$$$$$ learning curve"..... |
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Cummins:B Series -
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Boatdiesel Rebuild |
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33
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Mon Nov 16 09 2:51 AM |
Sep 25 2009
07:55 PM |
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Blackfinmike
Ok, its been a while to get this going, Bill D´s old motors. Hopefully Bill will tell the story, as I believe with alot of overheat and blow-by posts it will be beneficial for the forum. Any suggestio..... |
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Nov 15 2009
10:42 PM |
#32 |
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Blackfinmike
Just another update, I was able to do all the other work because I wasn´t working that much, scared me, changed jobs and now working to much. Typical story. Went out today removed camshaft, fuel pump,..... |
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Nov 16 2009
02:51 AM |
#33 |
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Bill D l
Mike, I went thru this before selling the engines to you.
From my perspective...you have 2 choices with the machine shop and boring.
#1. have the machine bore to their pistons specs...chances are (a..... |
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Cummins:B Series -
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Crankcase pressure. |
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2
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Fri Nov 13 09 10:40 AM |
Nov 13 2009
12:30 AM |
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Ed Mack
Looking to do a blowby test on cpl 0742 6BT5.9M I have learned from the manual that I need a .221 orifice in the "tool" and a 50 inch of H2O manometer or gauge. The shop manual gives spe..... |
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Cummins:B Series -
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4bt3.9 Engine /with 40 Kw Gen |
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0
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Thu Nov 12 09 4:01 PM |
Nov 12 2009
04:01 PM |
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Spot
I´m having a load problem on my engine.
when gen puts a load on the engine it digs down hard then comes back up to normal when the load comes off,such as the air compressors or heat/ac. The cycles a..... |
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NO Responses....
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Cummins:B Series -
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6bta5.9 Does Not Achieve Recommended Wot Under Load And Smokes |
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29
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Thu Nov 12 09 12:41 AM |
Sep 2 2009
02:29 AM |
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Carverfan
91 300hp 6bta on starboard side smokes under wot and only achieves 2600. Port engine does around 3000 without smoking. Engine had been rebuilt after overheat. Clean fuel filters, airseps, new injector..... |
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Cummins:B Series -
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Alternator Over Charging |
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13
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Tue Nov 10 09 7:23 PM |
Nov 1 2009
04:16 PM |
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Jimbob
i tried a search, but couldn´t find a topic covering Cummins alternators.
when i started up this AM, i found that the alternator was pushing 15.5 volts. i tried charging individual batteries, or on..... |
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Cummins:B Series -
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Testing for blow-by |
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2
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Mon Nov 9 09 4:24 PM |
Oct 13 2009
01:28 AM |
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Brian
I have twin 370 HP Cummins 6BTA5.9 M-3´s with Walker Air-Seps. One engine appears to have much more crankcase blowby than the other. How do I determine the amount of blowby and what is the acceptanc..... |
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Cummins:B Series -
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Engine RPM |
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17
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Sun Nov 8 09 2:31 PM |
Nov 5 2009
11:15 PM |
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Smokey
370 HP, cpl 2208´s. Rated at 3000 rpm. Now lets say they are propped at 3150. Assuming the raw water side is up to snuff. How dangerous or detrimental would it be to run at either of these RPM´s under..... |
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Cummins:B Series -
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4 BTA - vibration |
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1
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Sat Nov 7 09 2:40 AM |
Nov 6 2009
07:38 PM |
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Brian Heuer
Tony,
Ever put loctite or something similar on such things as oil pan bolts that have vibrated loose - or simply tighten them? |
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Cummins:B Series -
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How to Measure Wet-Exhaust Back Pressure? |
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4
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Sat Nov 7 09 2:30 AM |
Nov 6 2009
05:29 AM |
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Frank Gee
Hello all,
I´d like to measure the exhaust back pressure, but had no idea how to do it. The engine is cpl 0742 6bt-5.9m, 210 hp. It has a turbo, then a mixing elbow which goes up then down, then ..... |
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