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MerCruiser 900 SC, how are they really??

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Old 09-09-2008, 06:31 PM
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Default MerCruiser 900 SC, how are they really??

Hi guys,

I am looking at a boat with triple 2001 MY Merc 900 SCs.... How are they in performance, reliability, idling, etc etc. (What to look for?). Anyone with experience with those engines?

Thank you for all input!
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Old 09-09-2008, 08:53 PM
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The merc 900's and 1000's were great reliable motors.The lee intercoolers were the weak link. Assuming they were replaced with either aluminum or cupra nickel your good to go.Mine idle great and shift well.
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Old 09-09-2008, 08:59 PM
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I had a pair of 900's. liked them however they liked head gaskets.
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Old 09-09-2008, 09:12 PM
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keep the intercoolers flushed and also keep the valves adjusted every 10 hours or so. nice motors, top of the line parts
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Old 09-09-2008, 11:27 PM
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Hope there good...just bought a pair today
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Old 09-10-2008, 12:11 AM
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They were rated at 50 hour motors by Mercury[top end]Cometic head gaskets and .904 roller lifters would help longevity.
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Old 09-10-2008, 06:13 AM
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Thanks, what about consumption when compared with the new 850/1075s?? Can they run for let's say an houre on idel without fouling the spark plugs?

OSO is so great
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