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Caterpillar:C7 -
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C7 Reliability |
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Sat Oct 17 09 12:21 AM |
Oct 16 2009
03:36 AM |
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Davisjrjr
OK - after looking into the QSC & C9, I have some attractive boats available with c7´s - after hearing all the war stories of 3116 & 3126´s - it gives me reservations, BUT talking with several CAT fac..... |
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Caterpillar:C7 -
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Leaking Aftercooler has damaged head |
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Fri Jun 19 09 6:05 PM |
Jun 19 2009
06:05 PM |
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Onarampage
I found that my overheating problem was bring caused by a bad valve seat that was damaged by a leaking aftercooler. It seems that the salt water damaged the valve seats allowing the gasses to escape ..... |
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Caterpillar:C7 -
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Intake manifold overheat |
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2
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Wed Jun 17 09 12:57 AM |
Jun 16 2009
08:59 PM |
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Onarampage
I have a pair of C7s and the port engine shows high intake manifold temp. I have replaced the aftercooler, changed the raw water impeller, (I am going to look at it again to make sure the darn thing i..... |
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Caterpillar:C7 -
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CAT C7 head gaskets |
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Thu Feb 12 09 7:53 PM |
Feb 12 2009
07:53 PM |
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Kevin
I have 2007 CAT C7 engines in my boat and just had a head gasket fail. Has anyone else had head gasket problems with the C7. The engine never ran over 205 degrees, so it´s not an overheating problem. |
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Caterpillar:C7 -
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C7´s Hard to Start and Lots of Smoke |
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5
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Fri Oct 31 08 11:13 PM |
Oct 31 2008
11:47 AM |
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Jim
I had new C7´s (455hp) installed two years ago in a Tiara 40. They have been chronically difficult to start. The engines always start, but they often stutter and then die and then the next tim..... |
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Caterpillar:C7 -
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Uneven Fuel Consumption Rate |
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7
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Fri Oct 31 08 4:44 PM |
Sep 13 2008
06:20 AM |
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Galileo
I have twin c7 engines on my boat but shows diffeent consumption rate. The starboard engine shows at least 2 gallons per hour more at any speed than the port engine. The props were already checked by ..... |
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Caterpillar:C7 -
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New C7 bad right off the shelf... |
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1
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Sun May 25 08 11:18 PM |
May 25 2008
10:58 PM |
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Captn Dan
FYI: Gents, I just repowered my charter fishing boat with a pair of brand new C7s. Got ready for the sea trial started the starboard and she purred like a Cat. Ha Ha... The port engine started up an..... |
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Caterpillar:C7 -
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Sudden RPM drop at steady state cruise |
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2
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Fri Sep 14 07 3:42 PM |
Sep 11 2007
08:56 PM |
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Srodd
Hi All, advice please. I have a 43´ Eastbay powered by C7s. The other day I was runing at 2300 and the RPM´s on both engines dropped suddenly to about 1800 and then picked up again in a ma..... |
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Caterpillar:C7 -
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caterpilar C18 |
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0
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Fri Sep 7 07 11:17 PM |
Sep 7 2007
11:17 PM |
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Douglas Stinchcomb
Bad aftercoolers 1000 hours ruined engines anybody else had problems |
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Caterpillar:C7 -
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Operating Temperature |
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6
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Thu Jul 12 07 9:09 PM |
Apr 30 2007
03:32 PM |
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Srodd
Hi all. I have a 2006 grand banks eastbay 43 with c7s. I bought the boat used with about 150 hours on the engines, now they have about 155. The boat is all stock, 5 bladed props (don´t know the ..... |
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Caterpillar:C7 -
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Fuel Filtration |
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1
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Wed Mar 7 07 2:07 AM |
Mar 6 2007
10:30 PM |
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Srodd
After reading various posts about fuel quality and the importance of filtration and as someone used to gasoline powered boats, i could use some advice. Whats the consensus on the proper spec on the ra..... |
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Caterpillar:C7 -
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Did you know? |
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10
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Tue Mar 6 07 5:34 AM |
Mar 4 2007
08:18 PM |
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Tomas Kempe
I can not help but liking the CAT-C7. Did you know that the C7 Acert (110x127 mm, bore and stroke) is pretty much the same as C9 Acert (112x149mm, bore and stroke) judging from the photos here on the ..... |
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Caterpillar:C7 -
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What does the Prop Demand Data graph represent? |
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4
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Sat Feb 10 07 6:42 PM |
Feb 10 2007
04:34 AM |
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Lostanotherone
I am buying a boat with 460 mhp C7 engines. I have gone to the Cat web site and and found a chart styled Prop Demand Data. It doesn´t make sense to me and I wonder if anyone can steer me to a we..... |
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Caterpillar:C7 -
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caterpillar C7 reliability issues |
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2
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Tue Aug 22 06 3:19 PM |
Aug 21 2006
04:21 PM |
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C.w.
I am looking for any comments regarding this engine, especially from anyone that is aware of this design´s track record after, let´s say, more than 1000hrs. or so. I realize that this data..... |
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Caterpillar:C7 -
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C7 Vs Qsb |
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4
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Sat Jun 3 06 11:47 AM |
May 31 2006
02:39 AM |
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Alberto J Lugo
I was surprised by the recommendation to consider a qsb instead of the C 7while asking for a quote on a derated C7 for a 31 bertram project boat at a cat dealer. The explanation done was the lack of r..... |
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