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Merc 700's & NXT drives!!!

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Old 05-17-2010, 11:46 PM
  #21
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There is also a X3 Cig RR in the Michigan City Ind. area also....
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Old 05-18-2010, 06:29 AM
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There is also a X3 Cig RR in the Michigan City Ind. area also....
Yep really nice boat, with a classic Cig paint job!
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Old 05-18-2010, 08:04 AM
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I have to say that I do not have any experience with 700NXT's, but I am very impressed with everything Ilmor sent me for my 725/Indy installation. I would at least give them a call and talk to some of their customers.
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Old 05-18-2010, 11:12 AM
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Originally Posted by C_Spray View Post
I have to say that I do not have any experience with 700NXT's, but I am very impressed with everything Ilmor sent me for my 725/Indy installation. I would at least give them a call and talk to some of their customers.
The Ilmor boyz R up evey year 2 Boyne Thunder, PR I help out w/!!!!
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Old 05-19-2010, 12:07 AM
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Originally Posted by Joe Sunsation View Post
We built several F-4ís with the 700ís and NXT drives, very nice packages and had no problems with any of them, and they all ran at least 100mph. The black and green factory boat has 230 hours with only a couple small issues, but never stopped us from running, pretty good looking motors too.
Are there motors in those pics?
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Old 05-19-2010, 12:15 AM
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Great engine and drive combo. Really stout and robust.

However all the stock units dyno'd on third party dynos have made markedly less than 700 HP.
(dont take it up with me, but take it up with Dustin Whipple who DOES know more about the merc 700 than almost anyone)

Mechanically, stock, they are good for many hours of life - but they seem to blow engine electronic components pretty quickly. Most notably the following components PCM /IAC driver, fuel pump never on, or always on, coil driver failure, boost control valve failure......

They can be made to run much more HP with aftermarket kits they can really sing- but out of the box it is what it is.

The problem are known and adressed, but inconvenient for sure, overall its A superb package.


Uncle Dave

Last edited by Uncle Dave; 05-20-2010 at 12:57 AM. Reason: detail addition
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Old 05-20-2010, 07:34 PM
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Great engine and drive combo. Really stout and robust.

However all the stock units dyno'd on third party dynos have made markedly less than 700 HP.
(dont take it up with me, but take it up with Dustin Whipple who DOES know more about the merc 700 than almost anyone)

Mechanically, stock, they are good for many hours of life - but they seem to blow engine electronic components pretty quickly. Most notably the following components PCM /IAC driver, fuel pump never on, or always on, coil driver failure, boost control valve failure......

They can be made to run much more HP with aftermarket kits they can really sing- but out of the box it is what it is.

The problem are known and adressed, but inconvenient for sure, overall its A superb package.


Uncle Dave
Thanx Dave!!!
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Old 05-20-2010, 09:48 PM
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Originally Posted by Uncle Dave View Post
Great engine and drive combo. Really stout and robust.

However all the stock units dyno'd on third party dynos have made markedly less than 700 HP.
(dont take it up with me, but take it up with Dustin Whipple who DOES know more about the merc 700 than almost anyone)

Mechanically, stock, they are good for many hours of life - but they seem to blow engine electronic components pretty quickly. Most notably the following components PCM /IAC driver, fuel pump never on, or always on, coil driver failure, boost control valve failure......

They can be made to run much more HP with aftermarket kits they can really sing- but out of the box it is what it is.

The problem are known and adressed, but inconvenient for sure, overall its A superb package.


Uncle Dave
Pretty much sums it up.
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Old 05-21-2010, 02:15 AM
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Originally Posted by SLOWRIDE-388 View Post
Fountain has a trip 47 with 700s. I heard it runs pretty good.
My neighbor just bought a triple 700sci 47 Fountain late last fall. I don't think he has run it much yet and I have not talked to him about it yet. He has place at LOTO and is keeping it there.
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Old 05-21-2010, 02:38 AM
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I have 700's in a 382. It would seem to me that you would be back to the same issue with the center drive. I don't see how it would surface. Mine runs really good when the props vent over 80. The center drive will always be buried. I would think as with bravos that it would actually slow the boat with the drag. ??
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