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Thread: Motaa
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08-16-2015, 09:59 AM #1
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Motaa
I found a stv euro with a 2005 Merc 2.5L 280hp mota!
I have no experience with the 2.5l and wondering how many hours before a rebuild is needed?
thnx guys!
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08-16-2015, 10:55 AM #2
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100 to 150 max in most cases but all depends on how hard its been run. Is it a consumer or ROS computer. The consumer computer if its not had the rev limit raised revs to 7700 and the ROS revs to 8200 rpm. The motors are the same just different ECU's. Ive seen a couple that had over 200 hours on them and when taken down for new rings the cylinders looked like new and the rings hardly had any wear at all. Check the ECU with a DDT and see how much time the motor has had over 6000 - 7000 rpm. A lot of times if they've not been run long and hard the rpm have not been over 7000 very long and would give you more time between re-ring. Hope this helps.
Rob Lankford
1988 20' Action Marine 2.4 200
Previous owned boats worth mentioning
1976 17' Action Marine 2.4 200
1984 20' Action Marine 2.5 200
1983 17' Hydrostream V-King 2.4 Bridgeport
2003 LPB STV RR COPY 2.5 280 /300 Drag
2005 LPB STV RR COPY 2.5 280
2005 Baja 23 Outlaw 6.2 Mercruiser
2006 FTP Quarter Shot T3 Race 2.5 200 CARB/2.5 225 PROMAX
2009 FTP Quarter Shot T3 Race 2.5 280
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08-16-2015, 10:58 AM #3
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100-120hrs need to do leakdown tests when you get to 9 percent time to rering.
Dave1980 Cougar 19 tunnel,90 2.4L Bridgeport EFI in middle of restoration.
1988 BAJA Sunsport 186, 96 225 Pro Max
79 12' Auminum, 95 Merc 9.9
RIP Stu
"So many idiots, so few bullets"
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08-16-2015, 11:23 AM #4
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Thanks soo much Rob and Dave!
Motor has 100 hrs as per Advertisement....but not sure which ECU.
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08-16-2015, 07:09 PM #5
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The ecu will, have a white sticker that says either ROS (RACE OFF SHORE) or CON (CONSUMER).
Originally Posted by mariomal99
Rob Lankford
1988 20' Action Marine 2.4 200
Previous owned boats worth mentioning
1976 17' Action Marine 2.4 200
1984 20' Action Marine 2.5 200
1983 17' Hydrostream V-King 2.4 Bridgeport
2003 LPB STV RR COPY 2.5 280 /300 Drag
2005 LPB STV RR COPY 2.5 280
2005 Baja 23 Outlaw 6.2 Mercruiser
2006 FTP Quarter Shot T3 Race 2.5 200 CARB/2.5 225 PROMAX
2009 FTP Quarter Shot T3 Race 2.5 280
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