X-Dimension on 29 fountain
 

I have a 98 29 fever and was looking buying a Imco -2 shorty. My understanding the new models they raised there X dimension to increase speed. Is it worth the price of a shorty. I beleave my X-Dim is 18.5. Can any with a newer single 29 with a Hp 500 or larger post there specs and is it harder to plane out of the hole? I have a 540 bulldog with 634Hp running a 28LH bravo 1 . Best speed it 76MPH GPS with a full tank and gear.

I had a 2002 29 Fever with 575SCi. X dim was 19.5". You could get on plane with B1 props, but not with Hydro Q-IV's. As soon as the bow would start to come over, it would blow out with the Hydro props. Sometimes the B1's would blow out in corners. The slip was pretty bad with that boat, too. I had a couple of "good" performance shops and most prop shops tell me that I needed a 1" spacer on that boat to get the drive back in the water. Eariler I had a 2000 29 Fever with 500 EFI, (18" or 18.5" X dim - can't remember anymore) and it did ok with Hydro Q-IV props getting on plane, but it would routinely blow out in corners. I now have a 2006 29 Fever with 525 EFI and the X-dim is 19.0" and it doesn't do anything wierd with B1 props. Have not tried a Hydro Q-IV on this boat. When they switched from Hydro props to B1 props, around 2001/2002, they raised the X dimension too - the B1's were more tolerant of higher X than the Hydros. Between 2002 and 2005, the X-dim varied from 19.0" - 19.5" on the 29's depending on the year. By 2006, they were back at 19.0"

I have a 1998 Fever with a 540 700 hp motor and Imco xtreme advantage out drive and 2' shortie. The x is already high but the shortie really complaments it, I do need to use the tabs to get on plane But only about 1/4 way. Then shes like a rocket.I belive the shortie is well worth it. You should be runnin around 85 with your set up.

Can you measure your X-dim on your 98 and what prop are you using?

X is 18 Im currently running a Hydromotive 30

Can everyone post there speed, HP with there X- Dim? If raise My drive by 1 to 2 inches What speed should if any I should expect.

I would get rid of the bravo prop, I ran a 30 bravo on my fountain and it didn't like it. I think the Hydromotive is better suited for our boats design.

I picked up 5 to 6 mph on top end by going with a 2" shortie. But you will need to use your tabs a little to get her up, and then she will fall over and stay hooked-up with the hydro on.

2000 29 Fever 500EFI 25P LH Hydro Q-IV 73 mph (GPS) on lake ... performance report said 74.5 mph with 25P LH Hydro

2002 29 Fever 575SCi 30P RH B1 78 mph (GPS) on same lake ... performance report said 83 mph with 30P RH B1

2006 29 Fever 525EFI, 26P LH B1 76-77 mph (GPS) on same lake ... performance report said 80 mph with 28P LH B1

If your X is 18.5" and you raise it 2", I think you are going to have a lot of prop blow out problems. I doubt you could get a Hydro Q-IV to work with that high of X. We tried about every which-way possible with tabs and drive trim, boat weighting, etc, to get a Hydro Q-IV to hook up on the 29 with 575 and could never get it to get on plane. If it would have gotten on plane, I'm sure the top end numbers would have been impressive. I'm sure Fountain went back from 19.5 to 19 for a reason, later in production. I have the Fountain test reports for several of the 29's with a variety of engines and X's. For example, a 2005 29 with 525EFI, X=19.5", 26P B1, 76 mph on the test sheet. Another one, 2003 29 with 500EFI, X=19.5", 26P B1, 75 mph on test sheet,

2002 29 Fever 19.5 x dim. 30LH Bravo1 703HP 87mph GPS. Thnking about adding a nose cone and see if it helps top end. Test sheet with stock 575SCi motor 83mph.

1.5 drive?

Yep, 1.5 drive. Tyler Crockett motor with Dart heads, Wipple intercooler, ECU... Was cold out going into a slight left hand turn when I hit 87.

Thanks for all of the information, We have all the same hulls right? Maybe I should start with more HP, I do have a M3 procharger but since I have rasied my compression I can only run 3 more pounds. Just to let everyone know when I bought the boat a couple a ago it had a 2 inch spacer but the best speed was 67 mph. I just don't understand why my boat is only run 76 with 600+ Hp unless the dyno was not correct.

I also have a 1998 Baja Boss 27 with 509 m3 Procharged 750 hp. Alot lighter than my Fountain and faster to. Go under "drives and lower units" here on the forums and look for "torn between Fountain and Baja"

What torque numbers did you have on the dyno? The m3 would give you more torque and push that heavy of a boat better.
On the dyno mine was 738 lb/ft of torque. Over 700 all the way thru the rpm range. A N/A motor will not have that flat of a torque curve.

I never saw the dyno sheet but talked to Riggs marine who built the motor, Boat came with HP500 but the guy before me wanted to go faster so they took a 500 bulldog and made some upgrades to the motor. I bought it with 30Hrs on the new motor. Spec sheet from fountain back in 98 said it went 71mph with a 24Hydro. Talked to Nickerson Performance and I am going with a new Carb for the M3. The real question now is, If I run a thru hull water pickup with it increase my HP.. My other boat has a built 461 with a M1 procharger but never saw a speed incease later in the build when I went threw with a fresh water pickup. Is it worth drill a hole in the boat?