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Mercury 600sci Whipple Upgrade

rchelm19

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Wondering if a whipple upgrade to my 600sci would lower reliability, anyone have a 600 with a whipple on it?
 

JD Dearden

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I know a lot of people have done this. I did it on my last boat and loved it. Not sure I have ever read someone regretting it...You should be just fine.
 

Devious_Chris

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I hear great things about the upgrade......
 

rchelm19

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I know a lot of people have done this. I did it on my last boat and loved it. Not sure I have ever read someone regretting it...You should be just fine.
How much more horsepower did you get out of it?
 

JD Dearden

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How much more horsepower did you get out of it?
I don't know exactly but I think the numbers that are posted on the Whipple site are pretty accurate. The boat had a very noticeable difference.
 

relaxalot

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IMG_3820_zpsvw5hiyur.jpg Use the search on RDP and you can find a lot of info. I had a stage 2 for over 300 of the 405 hours I have on my boat with no problems. Loved it... Now I have the stage 4.. I don't know how much hp it actually is but I know it is a bunch... I had Aaron at Absolute Speed and Marine do mine. He can tell you all about it!
 

Gelcoater

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View attachment 480481 Use the search on RDP and you can find a lot of info. I had a stage 2 for over 300 of the 405 hours I have on my boat with no problems. Loved it... Now I have the stage 4.. I don't know how much hp it actually is but I know it is a bunch... I had Aaron at Absolute Speed and Marine do mine. He can tell you all about it!
With the cam upgrade does it sound more "lumpy" at idle?
 

relaxalot

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With the cam upgrade does it sound more "lumpy" at idle?
I think it sounds the same. I can tell it is slightly richer and it has a different "feel" while it warms up. After about 5 mins it settles down and acts like it always has. Sounds the same. Very good dock manners. No problems.
 

Stayin'ontop

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I think it sounds the same. I can tell it is slightly richer and it has a different "feel" while it warms up. After about 5 mins it settles down and acts like it always has. Sounds the same. Very good dock manners. No problems.
relaxalot
What prop are you running to get that 100 mph? I have an '08 sportdeck with a Merc 600 and a stage II whipple upgrade. I can get about 91 with a 5 blade 28". I think for the time being I am going to invest in a 4 blade 32" and maybe when its time for a motor refresh, upgrade to the stage IV.

I have spoken with Aaron at Absolute and he is familiar with the boat and its previous owner. I am second owner and still learning the ins and outs of the boat.

Thanks!!
-Curt
 

Stayin'ontop

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I think it sounds the same. I can tell it is slightly richer and it has a different "feel" while it warms up. After about 5 mins it settles down and acts like it always has. Sounds the same. Very good dock manners. No problems.
Also, what drive are you running? I've got a stock XR for the 750HP we have now, but that stage IV upgrade puts the motor up in the 850-900HP range. I would imagine the drive needed some love to????

thanks for the info!!
 

relaxalot

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Also, what drive are you running? I've got a stock XR for the 750HP we have now, but that stage IV upgrade puts the motor up in the 850-900HP range. I would imagine the drive needed some love to????

thanks for the info!!
I run a max machine XR drive. Hydromotive P5X 30 pitch prop. Or you can run a Maximus 30 pitch. Both props or five blades. I believe you are talking about a Howard sportdeck?
 

Stayin'ontop

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I run a max machine XR drive. Hydromotive P5X 30 pitch prop. Or you can run a Maximus 30 pitch. Both props or five blades. I believe you are talking about a Howard sportdeck?
Yes its an '08 Howard Sport Deck. We have the stage 2 upgrade on the 600. Love it but am interested in the stage 4 upgrade when i get a motor refresh at 300 hours or so. At 190 hours now. Just not sure how beefy i need to make the drive to handle that. Running an XR now
 
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