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850 & 1075 Maintenance

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Old 01-09-2008, 10:11 AM
  #41
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what kinda fuel will a 1075 suck down WOT?
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Old 01-09-2008, 10:12 AM
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Originally Posted by LapseofReason View Post
Buy a 39 Nortech with their 650's run about 100mph on 89 oct. gas, run 2 seasons before rebuilds. The boat feels bigger than the Cig and a little faster but you can't go wrong with either Just my 2cents.
how many hours is 2 seasons?...........2 mo cents...........
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Old 01-09-2008, 10:14 AM
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100hrs a season.
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Old 01-09-2008, 10:17 AM
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Originally Posted by LapseofReason View Post
Buy a 39 Nortech with their 650's run about 100mph on 89 oct. gas, run 2 seasons before rebuilds. The boat feels bigger than the Cig and a little faster but you can't go wrong with either Just my 2cents.
Take a ride on a 39Vin a 1-2 chop at 90 and you won't want to go any faster.......................I much prefer the 43V.
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Old 01-09-2008, 10:23 AM
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Sure the bigger you go the better the ride, but the 43 is going to be 5 or more mph slower on the power in 3 foot and less chop.

You could save 250k and buy my 50 and go 100 in any water.

Merc. power is nice but it just seems to me once you go over the 600 hp mark you can do better from the top builders for less cash and make the power on lower oct. gas.
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Old 01-09-2008, 10:24 AM
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Premier, you seem to be interested in the smaller costs like fuel burn but if you divide the maintenance costs and the higher insurance into the amount of hours that would shock you.

850/1075 rebuilds at 125 hours 52K is $416 an hour if they are standard rebuilds with nothing extra broken. If you pull them at 100 hours your hourly usage costs you $520 an hour. A Top Gun can be insured for 5-6K in S. FL w/ 525's but I would expect 10K+ for a 1075 boat due to 120 MPH capability and added value so that would add another $50 an hour (5K) to your annual boating budget.

If you cruise in the upper 70's mostly with 700's for $570 an hour more you can cruise in the 90's!

A 39 TG 700 boat would be the best bang for the buck in the size/ cost/ HP ratio.
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Old 01-09-2008, 10:36 AM
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I have talked to JC Perf about these engines. He said that after you take the electronics off the engine it is still a large V-8 chevy. He says with nothing broken and just a rebuild he can do a 1075 for $15,000 per engine
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Old 01-09-2008, 10:52 AM
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Originally Posted by marylandmark View Post
Suprised you didn't say trailer..
I had that in there and changed it for you!
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Old 01-09-2008, 11:05 AM
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There really is not that much difference in Maintaince of a Merc. vs any custom motor, if you compare apples to apples. The bottom end should be pretty much bullet proof for 200hrs. The valve train is still just a solid roller set up with the maintaince that goes along with that reguardless of the motor. Thebiggest difference is in the inductions system. The merc has a pretty nice efi system that helps protect itself pretty well. It is also very fuel effecient. The rebuilds could be done by any qualified shop and should cost the same as any comparable motor.
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Old 01-09-2008, 11:24 AM
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There really is not that much difference in Maintaince of a Merc. vs any custom motor, if you compare apples to apples. The bottom end should be pretty much bullet proof for 200hrs. The valve train is still just a solid roller set up with the maintaince that goes along with that reguardless of the motor. Thebiggest difference is in the inductions system. The merc has a pretty nice efi system that helps protect itself pretty well. It is also very fuel effecient. The rebuilds could be done by any qualified shop and should cost the same as any comparable motor.
That sums it up Really well!!!! Plus the word "Leakdown". 100hrs A 2006 39 Cigarette in connecticut had 70lbs 2 cylinders, the boat still ran 110 but 70psi is not good. Just a note the new Jesel lifters are expensive compared to standard lifters and require maching the block. Jesel will take your block and machine the block in house. If I had merc motors i would definately take this route. By the way Wayne Jesel's shop is not your corner machine shop.

Merc motors all run pretty fat. More fuel seems to thin the oil off the cylinder walls but cool the "charge". That will produce more ring wear.
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