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your opinion on mercruiser 600 sci

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Old 06-03-2015 | 09:19 AM
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what do you mean by in a pinch? once in a while? mixed with 91?
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Old 06-03-2015 | 10:16 AM
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My 2006 388 has them, I have 130 hours on my 600/XR's, no problems so far, my 600 SCi's require 91 octane, ( I run 91 non-ethanol in them) Great engines, start every time, idle great, provide great power.
Hope that helps...
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Old 06-03-2015 | 10:18 AM
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is'nt 91 hard to find on the water?
according to my memory, not that many selling premium
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Old 06-03-2015 | 11:42 AM
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Originally Posted by Dean Ferry
My 2006 388 has them, I have 130 hours on my 600/XR's, no problems so far, my 600 SCi's require 91 octane, ( I run 91 non-ethanol in them) Great engines, start every time, idle great, provide great power.
Hope that helps...
I would agree that if you could find the 90 or 91 non-corn infused gas, that'd be the best route.
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Old 06-03-2015 | 01:35 PM
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Originally Posted by jeff32
what do you mean by in a pinch? once in a while? mixed with 91?
If that's all you could find.... As long as you keep the RPM and boost down it would be fine
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Old 06-03-2015 | 07:22 PM
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Originally Posted by cigtopgun
If you know how to drive the bravo will hold up just fine.
By know how to drive do you mean only use it on a lake?
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Old 06-04-2015 | 01:40 AM
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Merc revised the 91 octane requirement and now says they are safe on 87 octane.
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Old 06-04-2015 | 07:46 AM
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Great motor you can run 87 if its stock, not a problem with mine in 5 years, upped it to the whipple stage 2 kit now need 91 , did blow the xr when i did the upgrade , well worth it .
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Old 06-04-2015 | 08:08 AM
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No I have a cigarette Tiger with 260 hours on it and have broken 1 from hitting something in the water!
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Old 06-04-2015 | 09:54 AM
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U
Originally Posted by Knot 4 Me
87 oct.

http://www.mercuryracing.com/sterndr...gines/600-sci/

Bravo XR Sport shorties lasted 100 hours behind 600's in a Sunny F-4 (11,000 lb) before owner traded it.

Great motors. Love the whine! Can turn up to 700's.

Edit: I would double check the manual for whatever year motors they are. Merc may have changed fuel requirements over the years. I can't remember what we used to put in the F-4. Let me double check with the owner. For some reason I thought we ran more than 87 octane.
But they shucked a drive soon after the trade! Timing is everything...
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