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14 March 2012, 21:41
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#1
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Member
Country: UK - N Ireland
Length: 7m +
Join Date: Sep 2011
Posts: 77
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caterpillar marine diesel problems
I have heard the RNLI are pulling out all the caterpillar marine diesel engines in their fleet due to problems and are replacing them with myMtu engines ! Anyone know if this is true and if so what the problems are ? And yes one of our boats have a Cat C7 engine :/
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14 March 2012, 23:16
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#2
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Member
Country: UK - Wales
Town: Pwllheli
Boat name: GreenSeaPhotography
Make: Humber
Length: 6m +
Engine: Johnson 115hp
Join Date: Feb 2010
Posts: 43
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From what I know they have tried MTU's in Seven Class and they worked very well. The new Shannon class is having Scannia engines but the Tamar is still running Cat's. I know Cat have been way over priced on parts and the RNLI dont have the money as they used to so they have to cut back.
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14 March 2012, 23:28
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#3
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Member
Country: UK - England
Town: Mighty Penryn
Boat name: Little Joe.
Make: Avon Searider
Length: 4m +
Engine: Honda BF50
Join Date: Aug 2005
Posts: 8,875
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CATs are noisey, thirsty and bulletproof. Finning servicing is eyewatering, that also maybe a factor.
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14 March 2012, 23:45
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#4
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Member
Country: UK - Scotland
Town: Stornoway
Make: Scorpion 8.1 mk2
Length: 8m +
Engine: Yamaha F300
Join Date: Aug 2006
Posts: 204
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Yes, our local lifeboat is a severn & the Engineer was saying that the V12 Cats are to be replaced with V10 MTUs (German) He said the new engines are shorter, lighter & more powerfull 
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15 March 2012, 00:08
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#5
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Member
Country: UK - Scotland
Town: Isle of Skye
Boat name: Seafari - VHF CH 71
Make: Humbers+Catamaran
Length: 6m +
Engine: Volvo/Iveco/Suzuki
Join Date: Feb 2002
Posts: 199
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CATS
Are overpriced, overrated, thirsty and parts are even more kidney-taking than my Volvo's - parts of them are made from cheap chocolate, that melt under any kind of pressure - would only touch one with someone else's money.
The cheeky bastards will only stick to their pretend warranty if you send them a sample of the oil when you change it -- and they charge you £100 odd quid for the pleasure....
Hold on is that similar to Cummins ?? -- i think it is.........
May they both sink on the same boat...
Pete
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15 March 2012, 07:05
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#6
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Member
Country: UK - Wales
Town: Southampton
Boat name: DynaMoHumm/ SRV/deja
Make: Avon8.4, 5.4 & 4.777
Length: 8m +
Engine: Cat3126 Yam 90 &70
MMSI: 42
Join Date: Dec 2003
Posts: 6,562
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Quote:
Originally Posted by Robbie Diesel
Yes, our local lifeboat is a severn & the Engineer was saying that the V12 Cats are to be replaced with V10 MTUs (German) He said the new engines are shorter, lighter & more powerfull |
U've never really equated lightness and extra power with reliability and long life, hey but call me old fashioned.
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15 March 2012, 08:28
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#7
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Member
Country: USA
Town: California
Make: Avon 5.4m Searider
Length: 5m +
Engine: Yamaha 90
Join Date: Aug 2011
Posts: 1,260
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Quote:
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Originally Posted by Rogue Wave
U've never really equated lightness and extra power with reliability and long life, hey but call me old fashioned.
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+1
(as I fire up my Cummins 6BT)
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15 March 2012, 09:30
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#8
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Member
Country: UK - N Ireland
Length: 7m +
Join Date: Sep 2011
Posts: 77
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so are the Cats being replaced because of serious issues as ive heard or have they come to the end of their "shelf life" or contract and and now being replaced
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23 March 2012, 18:07
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#9
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Member
Country: UK - N Ireland
Length: 7m +
Join Date: Sep 2011
Posts: 77
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I can't find any info on problems with the RNLI Cat engines ! Anyone else know anything
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30 March 2012, 09:45
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#10
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Member
Country: Ireland
Town: Crosshaven
Boat name: Black Shield
Make: Ribcraft 585
Length: 5m +
Engine: Suzuki 140
Join Date: Jun 2004
Posts: 42
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Severn & Trent CAT engines were uprated to 115/120% nominal output, and were fairly well abused on service calls (i.e. 0-flat sticks with limited warmup).
New engines are bigger, more powerful, but downrated at 80% nominal - so should make a big difference to life.
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30 March 2012, 13:07
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#11
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Member
Country: UK - England
Town: yorkshire
Boat name: little vicky
Make: avon ex RNLI
Length: 3m +
Engine: tohatsu
Join Date: Mar 2008
Posts: 2,310
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As it happens mate of mine works for Finnings, we were discussing this a few months back last time i was in the pub, he said problem with cats as well as pricey there getting a bit long in the tooth now compared to MTU ,MAN with regards to weight ,power weight and fuel economy ,
one of the reasons that the RNLI,s Medina class jet powered RIB back in the early 1980,s was shelved as the cat engines were a bit too heavy and costly for the size of boat ,
from memory think our old cat powered Arun class boat did around 44 gallons per hour on full noise.
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