29 fever, 575?
 

just curious guys, has anyone ever repowered 29 fever with a merc 575 sci? Also, what kind of numbers would you achieve? such as top speed, cruise speed.

Also, how scary would this boat be to drive? I would think 29 ft boat running in the 80's could be a handful.

27 with 575ish hp will see 80-82mph. I wouldn't call it scary but the 27 can be a driver's boat.

Let the bashing begin

I am all for it....because I love 575s! I would put chillers, cams, tune, pulleys, and then drive it...:evilb:

And I know some of the newer 29s had the 525 option which isnt too far off from the 575. But you don't get the whine, and you don't have the powerplant for more power if you ever want more in the future!

There was one for sale on the finger lakes 3 years ago. Nice boat!

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Found these it was for sale in NY

Wow impressive! So what kind of maintenance do they require? I've read a little on them and it sounds like the blower needs the most, and it sounds like this is the weakest link. I know this is a loaded question, but how is reliability as far as amount of hours of use? What extra attention does the super charger require? I love my boat like everyone else, I'm always thinking about the next move. Either repower mine when my 500efi needs to be freshened, or sell and go with a twin factory 500 or 525 set up.

-Send the blower off to DMPE. Nobody else.

-Get rid of the head gaskets - ASAP! I don't care how many hours are on them.

I swapped to a hydraulic roller cam and lifters. They came with a flat tappet cam from the factory, and there isn't as much zinc in the oils now, as when these were designed, so I have heard of the cams grinding lobes off. I know some also run special oil with high zinc levels and all is good.

-Blowers are almost no maintenance after you have them checked/rebuilt. Change the fluid in them about every 20 or so hours and you are good.

So what would make more sense, freshen my 500efi when it comes time and put a whipped on it, since it already has the roller cam? Or, is it worth the time and money spent to go to a 575?

seems like bolting a whipple on that 500efi is a no brainer to me!

Whipple your 500EFI. no question.

So which setup would be more dependable, the whippled 500, or the blown 575? The most dependable motor your going to have is always factory so I guess I'm just like everyone, looking to gain hp/speed and keep it dependable for the best bang for your buck.

im pretty sure whippled factory motors are quite dependable.

most dependable would be to freshen your 500EFI, put it all back together and not mess with it. It will also save you some $$$ LOL.

That would be no fun. :evilb::evilb:

220 trouble free hours. Keep on the maintenance. Why would you go blue without a blower? I would have a 496 HO before a 525.

http://www.offshoreonly.com/forums/s...low-hours.html

:evilb::evilb::evilb:

500 efi/whipple was my first choice,but couldnt find one...ended up buying a 496 with eagle rods and wiseco blower piston,with a 2.3L whipple....not many hours yet,but love it....:evilb:

Fountain sold several 29's with 575's. They also sold a couple with the closed cooling 600, too. Our 29 with 575 SCi, was one of the new deck style (anchor locker and integral swim platform ladder). It ran right at 82 mph. Fountain also made some of the older deck style 29 singles with 575's in them. They ran 83-85 mph, but they were ~500 lbs lighter. The 575 blowers are a Weiand 256 and they are not known to be all that great. Older ones with front and rear oil baths seemed to be better. Newer ones had rear bearing issues when they went to sealed rear bearings. If I remember right, those rotors do not leave the factory with teflon stipping, too. Head gaskets on the older 575's were not that strong and would blow, trashing the engine, but those had the better blowers. Newer 575's had Cometic head gaskets, but not-so-good blowers. They like lots of premium fuel, too.
Boat is not scary in low 80's at all if you know what you are doing. Later 600SCi boats only ran 83-86 mph, too. Hope that helps.

29
 

Have a 29 with 500hp with boostpower bpx-2 supercharger , ran , 89.6 with a 29 and was on rev limiter, needs bigger prop

nice
 

nice! post some pics

Hey guys, my two cents here. I have a 35 Lightning with 575SCI's that have Superchillers, cam changes, Dart pro one alum. marine heads. With smallest pulleys from Teague they made 859hp and 805ft. lbs. of torque! Great engines! watch your fuel though! good premium 93 octane only! blowers are the weak link and parts are hard to find. DMPE may be making gears... now for them though? different animal here but have been 104mph with some left. Biggest thing to pay attention too is amount of power verses drive or drives! XR's dont live!!!!!! a 575sci with superchiller and tune is a great combo.

540 C.I. with B&M 250 Blue Love It ! Dyno 634 HP


I'll hit 75MPH at 5000rpm and she will start to do this :evilb:

Do what makes you happy and what you can pay for if and when it breaks.

I pound the hours on mine and am very happy

EDIT: Boat Sold

Don't let that test sheet bother you if you can't re-create the speed. My test sheet shows 98.1 MPH on a 90 degree day. Best I have seen is 92.7 on a 60 degree day. Most days 89-90

I am near sea level.

My test sheet said 93. The person I bought it from had only ever gotten it to 92 until I showed up for the test drive and it did 93. When I got it home it would always do 93. Then I started tweaking!!!

Kevin,

I'm wondering if that is my old one. Where did you pick it up out of?