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600sci experience?

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Old 02-12-2007 | 10:38 AM
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Originally Posted by Joe
Broke Beak ---- I was thinking the same thing...... I change drive fluid w/ each oil change ---- No problems on my 525 boat. My 600 boat only has 6 hrs. run-time. But, I'm expecting the same thing.

PM ---- Does Mr. OL maintain/replace his internal drive gears etc... at the suggested intervals (every 75 hrs., depending on props and how hard you run the boat)?

Joe
I am talking new motors and drives with the 525 Whipple package, not the factory 600 package. The boat did not even make 5 hours of use before self-distructing multiple drives. And yes, that was with an experienced driver.

Last edited by pm203; 02-12-2007 at 10:42 AM.
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Old 02-12-2007 | 10:49 AM
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Ahhhhh..... Sorry, PM - I was a bit confewsd (esp. coming from you --- who is usually spot-on w/ your comments)! Much better now!
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Old 02-12-2007 | 11:12 AM
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No problem and thanks for the compliment.. I was answering Tomcat,s question (post 29) on supercharging 525.s.
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Old 02-12-2007 | 03:29 PM
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I'm not too worried about the drive- it's a single engine lake boat. I should be fine. You guys with your huge boats would laugh at me -this is just a little 4800lb v-bottom with a single. This is my first "bigger" boat - moving up from a 21' jet w/modified 454 runs just under 70. -I was weined on overpowered outboard hydrostreams and river rockets. Always love a small boat with the big engine.
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Old 05-17-2011 | 10:32 AM
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Originally Posted by Beak Boater
Have 2 in a Fountain, 62 hrs no problems. Idle great run strong all day. In fact the 525's sound a lot more radical than my 600's. Easy on gas, not sure if its the boat set up or the motors but they real user friendly. If you order, get the Smart Craft display. It can tell you more information then you have time to look at. All the engines vitals, speed, ect. My shows about 1.4 miles per gallon. Down side, us run at least 91 octane.
The Merc racing site says they only require 87 octane?

http://www.mercuryracing.com/sterndr...0sci/specs.php

Confused as to fuel requirements are????
Thanks,
Dean
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Old 05-17-2011 | 11:59 AM
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Originally Posted by Dean Ferry
The Merc racing site says they only require 87 octane?

http://www.mercuryracing.com/sterndr...0sci/specs.php

Confused as to fuel requirements are????
Thanks,
Dean
At some point in the past it changed. Not sure when Merc changed the fuel requirement, but in 2006 the spec on mine was 91 Octane.
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Old 05-17-2011 | 12:02 PM
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Originally Posted by Mentalpause
At some point in the past it changed. Not sure when Merc changed the fuel requirement, but in 2006 the spec on mine was 91 Octane.
John,
That's what I was wondering....... and the boat I'm looking at is an 2006.....
Dean
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Old 05-17-2011 | 12:44 PM
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Originally Posted by Mentalpause
At some point in the past it changed. Not sure when Merc changed the fuel requirement, but in 2006 the spec on mine was 91 Octane.
It was around mid 2009, Merc richened them up and took 2deg of timing from them.
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Old 05-17-2011 | 01:28 PM
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I have the 600 sci and am very happy with it. Initially I had some setup issues mainly due to not enough water pressure and intake temps that were too high. Whipple fixed me up with a stage 2 set up and it woke this motor right up.

Stock 600 sci 88- 90 mph

Stage two whipple upgrade 97 mph

The motor with the stage two whipple upgrade will hit the limiter with my current prop. If I spent some more time and money I am sure that I could gain 2-3 more mph from this motor. The difference with the whipple upgrade is remarkable. Logically, this will put more strain on the drives but it is alot more fun. I have 175 hrs on the motor.

Boat is a 28' Howard sportdeck. 4800 lbs dry

I would like to stay informed on the 600 sci packages that are out there. So far so good for me.
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Old 05-17-2011 | 03:13 PM
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Originally Posted by relaxalot
I have the 600 sci and am very happy with it. Initially I had some setup issues mainly due to not enough water pressure and intake temps that were too high. Whipple fixed me up with a stage 2 set up and it woke this motor right up.

Stock 600 sci 88- 90 mph

Stage two whipple upgrade 97 mph

The motor with the stage two whipple upgrade will hit the limiter with my current prop. If I spent some more time and money I am sure that I could gain 2-3 more mph from this motor. The difference with the whipple upgrade is remarkable. Logically, this will put more strain on the drives but it is alot more fun. I have 175 hrs on the motor.

Boat is a 28' Howard sportdeck. 4800 lbs dry

I would like to stay informed on the 600 sci packages that are out there. So far so good for me.
Sounds like a very sweet ride, we need some pics!
on your original water pressure problems, was the motor new? If yes, did merc do anything for you, or did you go straight to Dustin for your upgrade and fix? I believe that Dustin's upgrade kits ALL help with rerouting water to the intercooler, correct?
Thanks,
Deab
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