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850 & 1075 Maintenance

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Old 01-08-2008, 10:57 AM
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Default 850 & 1075 Maintenance

We are concidering upgrading to a boat with 850's or 1075's. What is an average amount of hours on each before a rebuilt. We do run full out sometimes but spend most of the time in the 70-75mph range which I assume would be 0 boost on these engines? Also How much are the rebuilds?
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Old 01-08-2008, 11:12 AM
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Originally Posted by PremierPOWER View Post
We are concidering upgrading to a boat with 850's or 1075's. What is an average amount of hours on each before a rebuilt. We do run full out sometimes but spend most of the time in the 70-75mph range which I assume would be 0 boost on these engines? Also How much are the rebuilds?
From what I have heard and read here on OSO, those motors are EXPENSIVE to rebuild.
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Old 01-08-2008, 11:16 AM
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$25k or so per 1075 if nothing's broken. 100+ hours or so before it's needed according to Mercury.

http://www.mercuryracing.com/_media/...1075_Maint.pdf

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Old 01-08-2008, 11:18 AM
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I read somewhere that the 1075 should be torn down, inspected, new seals, bearings, etc, every 25 hours. I think the cost was something like 23k.
 
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Old 01-08-2008, 11:33 AM
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I read somewhere that the 1075 should be torn down, inspected, new seals, bearings, etc, every 25 hours. I think the cost was something like 23k.
If your loaded then the cost to purchase and rebuild these High HP engines makes no difference to you. But on the other hand if your the average boater with an average income you want reliability and low maintenance cost, stick to the lower HP motors and enjoy the boating season. I think the cost are getting rediciolus.
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Old 01-08-2008, 12:11 PM
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I read somewhere that the 1075 should be torn down, inspected, new seals, bearings, etc, every 25 hours. I think the cost was something like 23k.

dont think so
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Old 01-08-2008, 12:16 PM
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I think it may have been a racing team or something that was doing it every 25 hours.
 
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Old 01-08-2008, 12:22 PM
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Most of the failures that I have heard of were at about 125hrs, with lifter failure. Also a couple of timing belts.
I think if you do the topend by 100 hrs, 200 before a total rebuild it reasonable.
Yes the Merc rebuilds are $$, approx $23K each for the total rebuild. But if you are the original buyer you get 25% off.
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Old 01-08-2008, 12:44 PM
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Quote:
Originally Posted by Scarab22-1998 View Post
I read somewhere that the 1075 should be torn down, inspected, new seals, bearings, etc, every 25 hours. I think the cost was something like 23k.
Not exactly.
They recommend that the valve lash should be checked and adjusted if needed every 25 hours.
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Old 01-08-2008, 01:09 PM
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Do they have the larger Dia lifters ?
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