SuperChiller for 29 Fountain w/575sc

[dviper94]

Hi All,

First post here on the Fountain board.

I am thinking about installing a superchiller on a 29' Fountain with a 575sc. Has anyone done this upgrade already? I know they have a nice 700hp package. It comes with the intercooler and fuel system upgrade.

I have a concern about engine hatch clearance. The kit raises the blower by 4 inches. Is there enough space for that? I like the rear deck padding and don't want to put a scoop on it.

Any experience or ideas would be appreciated.

Thanks.............

[tnothin]

Hey Ive got the same boat and have thought about doing what you are thinking of doing. But for now Ive decided to leave it stock because I dont want drive problems. But you can cut out an insert to get the clearance and not have to put on a scoop. I have talked to a guy that has done this and he sees about 88 on GPS.

[dviper94]

Hi tnothin,

Thanks for the feedback. What type of drive issues do you think you'll have? The XR is a fairly high rated outdrive. What are you seeing on the stock 575sc? I'm only getting about 75-76 mph. Thought it would have been more.

Good to know it can be done without a scoop though. I like the engine hatch cover logo.

Thanks,

Steve

[Need-the-Speed]

Originally Posted by dviper94

Hi tnothin,

I'm only getting about 75-76 mph. Thought it would have been more.

Steve

You must have something wrong with your Motor! I have a good friend that runs consistantly in the mid to upper 80's on GPS with a stock 575. If I'm not mistaken I believe his test sheet from Fountain say's 84. I think the 525's are good for 75-80. Where are you located? Maybe the elevation is a factor?

[tnothin]

Im seein about 81-82 on GPS. And then there must be something wrong with mine too, because Im not in the Mid 80s and no where near the upper 80s.

I just blew up a drive on the 4th of July, Snapped the vertical shaft in half and shered off some of the lower and upper gears, $6300 later and it was fixed. We were just cruzin along at about 60 and 4200 on the tach, and then boom.

[dviper94]

tnothin ........

are you running a bravo 4 blade 30p prop or some type of labbed prop? I have a 32p and only rev up to about 5000rpm. I think moving to a 30p would put me up a few more MPH and get me to the full 5300 rpm. Maybe that is my key to hitting 80.

[FeverMike]

Get in the bildge and have someone close the engine hatch and take a measurment to see if you have that 4" clearance you need.

[VP]

Originally Posted by tnothin

Im seein about 81-82 on GPS. And then there must be something wrong with mine too, because Im not in the Mid 80s and no where near the upper 80s.

I just blew up a drive on the 4th of July, Snapped the vertical shaft in half and shered off some of the lower and upper gears, $6300 later and it was fixed. We were just cruzin along at about 60 and 4200 on the tach, and then boom.

Ditto on the drive

I am the one NEED was talking about - I ran 89.7 on GPS while banging the rev limiter at 5450 rpm - the motor is stock except for .010 off the deck and heads when i freshened it plus I put a slightly smaller dia. pulley on the blower (about 3/8"smaller) along with water injection which I fit myself under the Throttle Bodies out of the airstream - I also replaced my 2001 XR with the newest XR last year which is faster (less drag) - I also added a 1/2" spacer to the drive - The X-dimension was too high from the factory and I was actually loosing speed when my fuel load went below 3/8 tank, when it should be going FASTER --- Anyhow, after all those little details, 90mph on Fresh Water at 425 ft altitude

[tnothin]

Dviper94- Im runnin a Labbed B1 LH 30 and at 5350 im at 82.
I tryed a labbed 32 and could only spin it at 4800 at 76, but it was 100 degrees out. I would like to try a 32 when it is only about 70 outside. Because once the temp dips below 80 I am all over the rev limiter with my 30. Ive calculated the slip and the efficency is better with a 32 If I could spin it at 5000 I think I would be at about 80, there for if I could only spin it about 5200 I know I would of course be faster with a 32 then a 30 and at about 200 less RPM.

[tnothin]

Originally Posted by chambersgc

Ditto on the drive

I am the one NEED was talking about - I ran 89.7 on GPS while banging the rev limiter at 5450 rpm - the motor is stock except for .010 off the deck and heads when i freshened it plus I put a slightly smaller dia. pulley on the blower (about 3/8"smaller) along with water injection which I fit myself under the Throttle Bodies out of the airstream - I also replaced my 2001 XR with the newest XR last year which is faster (less drag) - I also added a 1/2" spacer to the drive - The X-dimension was too high from the factory and I was actually loosing speed when my fuel load went below 3/8 tank, when it should be going FASTER --- Anyhow, after all those little details, 90mph on Fresh Water at 425 ft altitude

What was your stock X Dim. and now what is it, how much speed did you pick up.