34' Great Boat - No Bullsh*t
06-09-2009 | 09:55 PM
#11
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From: Zion, IL
06-10-2009 | 07:03 AM
#13
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06-10-2009 | 08:04 AM
#14
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From: Bradenton Florida
What speed did u see sofar ?? Has to be over 90 ?!
06-10-2009 | 08:36 AM
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QUOTE=daredevil;2884986]No,,the only OPA event i will do is St. Clair.
What speed did u see sofar ?? Has to be over 90 ?![/QUOTE]
I had filled the 140 gallon to where it overflowed, me, Will Smith, and my Uncle (Barry Hills) went out on Friday in Sarasota Bay; probably burned off twenty gallons or so at most before it ran 91 mph. It was running 91/90 mph @ 5000 rpm, with stock 34" Bravos. I am having the props blue-printed (matched), with just a twinge of performance work; the props cavitate when planing so that is the first area of propeller re-work. I would hope/expect a 2 mph gain when the boat is light on fuel, when the air is cooler than 90F with when there is a following sea not quatering seas, and two people (not three people), in the boat - and with the prop work (I am hoping for 3/4 mph) in combination with all the above 93+ mph would be fantastic, but I would take 2 mph in a heartbeat.
This speed is from a Livorsi pressure speedometer (waterpickup), and confirmed with Will Smith's hand-held GPS.
Motors: 540 cu.in. Darts with the MerCruiser 502/415 top-end EFI. 9.5 pistons, Iron ProTopline cylinder heads (I think they are 290's, not 320's). The Dyno at Innovation using my Gil Headers, not tube headers:
Dyno Numbers from Innovation:
Horsepower:
Port Motor: 517.7 hp @ 5000 rpm
Starboard Motor: 519.4 hp @ 5000 rpm
These motors peak at 5000 rpm on horsepower
Peak torque:
Port Motor: 646.2 lb./ft. @ 3700 rpm
Starboard: 641.0 lb./ft. @ 3700 rpm
To keep this in perspective I cruise at 3100 rpm, and there is 616 lb./ft. of torque there. These motors will idle at 650 rpm, but we bumped the idle to 750 rpm to be conservative.
That sums up a long answer to a simple question, but that is what lawyers do.
Stephen
PS - Dyno - AirIntake temperature: 81F
WaterIntake temperature: 77F
Just like summer conditions, not doctored in a 65F airconditioned room.
Last edited by Smarty; 06-27-2009 at 02:09 PM. Reason: Pictures from Sarasota added to post
06-10-2009 | 09:06 AM
#16
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From: Bradenton Florida
Nice # but even if they peak @5000 u can turn them higher.
I would say they are safe @5400,,up there u don't need HP to spin the prop ,just RPM and u would gain speed easy.
U should call Innovation and ask if 5400 is safe on these motors.
A stock 502 is 5400 as well as a 454 is 5200 RPM and i had my 454's @5400 all the time and never had any problems.
Just a thought.
@5400 should be @ 102 MPH with 34 pitch.
RPM X PITCH X 0.01 / 12 / 1.50 ratio = MPH
Other then that ,,,,WOW !!
NICE.
I would say they are safe @5400,,up there u don't need HP to spin the prop ,just RPM and u would gain speed easy.
U should call Innovation and ask if 5400 is safe on these motors.
A stock 502 is 5400 as well as a 454 is 5200 RPM and i had my 454's @5400 all the time and never had any problems.
Just a thought.
@5400 should be @ 102 MPH with 34 pitch.
RPM X PITCH X 0.01 / 12 / 1.50 ratio = MPH
Other then that ,,,,WOW !!
NICE.
Last edited by DareDevil; 06-10-2009 at 09:09 AM.
06-10-2009 | 06:17 PM
#17
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Nice # but even if they peak @5000 u can turn them higher.
I would say they are safe @5400,,up there u don't need HP to spin the prop ,just RPM and u would gain speed easy.
U should call Innovation and ask if 5400 is safe on these motors.
A stock 502 is 5400 as well as a 454 is 5200 RPM and i had my 454's @5400 all the time and never had any problems.
Just a thought.
@5400 should be @ 102 MPH with 34 pitch.
RPM X PITCH X 0.01 / 12 / 1.50 ratio = MPH
Other then that ,,,,WOW !!
We set the rev limiters at 5100 rpm, looking for durability, and reliability, and conservatively set-up for worry free operation. These are solid motors, with all the best, they just were too dam $$,$$$ when it was all said and done. But you get what you pay for, and Innovation is a rock solid outfit with smart, stand-up men. I would do business with them anyday of the week.
NICE.
I would say they are safe @5400,,up there u don't need HP to spin the prop ,just RPM and u would gain speed easy.
U should call Innovation and ask if 5400 is safe on these motors.
A stock 502 is 5400 as well as a 454 is 5200 RPM and i had my 454's @5400 all the time and never had any problems.
Just a thought.
@5400 should be @ 102 MPH with 34 pitch.
RPM X PITCH X 0.01 / 12 / 1.50 ratio = MPH
Other then that ,,,,WOW !!
We set the rev limiters at 5100 rpm, looking for durability, and reliability, and conservatively set-up for worry free operation. These are solid motors, with all the best, they just were too dam $$,$$$ when it was all said and done. But you get what you pay for, and Innovation is a rock solid outfit with smart, stand-up men. I would do business with them anyday of the week.
NICE.
PS Rev limiters are set at 5400 rpm, not 5100...
Last edited by Smarty; 09-08-2009 at 08:41 AM. Reason: Rev limiter correction
06-10-2009 | 09:04 PM
#20
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From: Bradenton Florida
We set the rev limiters at 5100 rpm, looking for durability, and reliability, and conservatively set-up for worry free operation. These are solid motors, with all the best, they just were too dam $$,$$$ when it was all said and done. But you get what you pay for, and Innovation is a rock solid outfit with smart, stand-up men. I would do business with them anyday of the week.
