PCM Excalibur 330 in a Barefoot nautique |
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21169 |
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The shaft angle will be a little different on the BFN, but the concept will be the same. Moving the powertrain forward 3" will also affect the way the boat handles. Steady Eddie has a few Python-powered BFN's with 1.23:1 transmissions, so I dont see why you wouldnt be able to fit a SBC+1.23 in yours without much issue. So long as you can get the packing nut off far enough to change the packing out, Id say you have enough room. See if you can use a 3" shorter shaft. |
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Ben#155
Senior Member Joined: June-24-2008 Status: Offline Points: 228 |
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I will try to drop it in first, and see how the shaft coupler height is compared to the engine height, and than i will measure the distance at the front.
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Ben#155
Senior Member Joined: June-24-2008 Status: Offline Points: 228 |
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Here some pictures! Yesterday i put the engine in the boat! And there is more space than a tought ( like you guys told me) This is mainly because the angle of the engine. i can use my original shaft seal. Only the rawwater pump pulley is very close! but not a problem. |
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BuffaloBFN
Grand Poobah Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
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So don't slam on the brakes. |
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Ben#155
Senior Member Joined: June-24-2008 Status: Offline Points: 228 |
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Little update. the boat is nearly ready for testing but i don't have much time to work on the boat. I found a used ACME 422 so i just have to finish the boat. I will give an update when i have it in the water!
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Ben#155
Senior Member Joined: June-24-2008 Status: Offline Points: 228 |
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I have some news
Today i tested the boat for the first time in the water! I have done a couple of hours and everything went okay The performance is very nice! The ACME 422 seems a nice prop for this combination very nice hole shot max rpm is 5000 TRB thanks for your advice! the only thing i don't like is the temperature of the left cylinderhead the temperature is about 95 degrees while the right cylinderhead is about 75 degrees i think the circulation of the coolant is oke. here is a litle clip from today. http://youtu.be/xUgdkLw_ELM |
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Bri892001
Grand Poobah Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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Wow! That sounds pretty nice.
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GlassSeeker
Grand Poobah Joined: November-26-2008 Location: Elk Grove, CA. Status: Offline Points: 2421 |
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sounds good pegged the speedos, have you gps'd it? what was your top speed? wonder when its loaded and towing a footer how fast it will go???
nice setup |
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This is the life
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Ben#155
Senior Member Joined: June-24-2008 Status: Offline Points: 228 |
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i don't have a gps, but i think it is fast enough to pull a footer
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Ben#155
Senior Member Joined: June-24-2008 Status: Offline Points: 228 |
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Yesterday i did another test. I have my doubs about the advantage of the
1.23 transmission. it has a good hole shot and acceleration is very smooth! The aceleration feels a bit like a stern-drive application. But the speed at 2000 Rpm is far lower than with the direct drive transmission. At 2000 rpm the higher pitch prop does not compensate the reduction of the transmission because the slip of the prop. I also think that the fuel economy of the direct drive transmission is better. reverse is also very different! |
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Ben#155
Senior Member Joined: June-24-2008 Status: Offline Points: 228 |
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bhectus
Platinum Member Joined: July-04-2010 Location: Gator Country! Status: Offline Points: 1809 |
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says it's private?
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'02 Ski Nautique 196 w/ 5.7 Apex bowtie - Sold
'87 Barefoot - sold '97 Super Sport Nautique - originally custom built for Walt Meloon '97 Ski Nautique '83 SN 2001 |
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Ben#155
Senior Member Joined: June-24-2008 Status: Offline Points: 228 |
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Oops, and now?
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fanofccfan
Platinum Member Joined: December-13-2009 Location: North Bend NE Status: Offline Points: 1772 |
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Nice work.
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phatsat67
Grand Poobah Joined: March-13-2006 Location: Indiana Status: Offline Points: 6150 |
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That thing looks like it screams. Maybe you've started a small block footer revolution !
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Ben#155
Senior Member Joined: June-24-2008 Status: Offline Points: 228 |
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Full throttle it sounds and feels really strong! And yes i,m not scared
for a BFN with a std 454. |
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21169 |
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That things a good bit healthier than a stock 454. Gps it yet? I'll wager a guess at 53.
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Ben#155
Senior Member Joined: June-24-2008 Status: Offline Points: 228 |
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I have no Gps, i will try an smartphone with 'Gps' i don't know if that will work. i dont think it will reach the 50. Last year i measured the speed of my ski nautique with an ipad and it was just 40 i guess this will do 45
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21169 |
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Based on the revs youre pulling that 422, and what the wake looks like at wot, you're going a good bit faster than 45! I don't put a lot of stock in the gps smart phone apps... You may want to consider investing in a half way decent hand held gps. I use it to set my speedos in addition to measuring max speed- very handy.
This is what the wake on our '79 looks like at 42-43mph. The spraying of the prop wash in front of the rooster tail doesn't happen until you're at or above 50. And you have plenty of it- that boat appears to run very strong. |
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Bri892001
Grand Poobah Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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I like how at about 1:54 in the video, you think it's already maxed out and then it speeds up a whole other level.
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M3Fan
Grand Poobah Joined: October-22-2005 Location: United States Status: Offline Points: 3185 |
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Glad to be the model on that one, Tim.
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2000 SN GT40 w/99 Graphics/Gel
2016 SN 200 OB 5.3L DI https://forum.fifteenoff.com |
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TX Foilhead
Grand Poobah Joined: February-01-2009 Location: Kingsland TX Status: Offline Points: 2076 |
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The phone gps depends on the phone and the software, the problem is they don't update rapidly so you may miss a few 10ths or may even a whole mph. It will get you in the ballpark though, even my Stargazer will move around about a half mph at the very limit on fast (slightly rough) water. I think it just the boat breaking free and then falling back in. Hard to get them to stay out for very long with the hook, but as rough as you can stand @ WOT seems to be the fatest. The water in that video looked like it should have been that way and a run in each direction will take the wind out of it.
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Ben#155
Senior Member Joined: June-24-2008 Status: Offline Points: 228 |
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Ok,i'm curious about the GPS speed. |
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21169 |
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A later direct drive BFN with the 454 is usually good for ~47mph. An earlier version (pre-87) will be a little faster (49-50). Yours looks and sounds a good bit faster than both.
The Garmin eTrex works well and can be found for <$100 here in the US (brand new). |
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phatsat67
Grand Poobah Joined: March-13-2006 Location: Indiana Status: Offline Points: 6150 |
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GPS that bad dad. That wake gets awfully far back there when you crack the throttle wide open. I like how you can see how much it torques over when you give it that mid range punch in the video.
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GlassSeeker
Grand Poobah Joined: November-26-2008 Location: Elk Grove, CA. Status: Offline Points: 2421 |
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Garmin GPS V has setting for big numbers and is easy to read and can be had for about $50 on ebay.
Put your interior back in...you need at least some weight in the boat or the wake won't appear the same. The real test is how fast it will pull a barefooter while at least 2 or 3 or 4 or 5 people are in the boat. |
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This is the life
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Ben#155
Senior Member Joined: June-24-2008 Status: Offline Points: 228 |
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Here we go!
today i tested the speed with an Iphone app and it is 47 mph @5100 rpm i did a short run so maybe i can reach 48. this is the first prop i tried so i think with a bigger pitch prop you can reach the 50! |
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GottaSki
Grand Poobah Joined: April-21-2005 Location: NE CT Status: Online Points: 3357 |
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Fisheye lens on the gopro makes the wake look narrow and out there, me thinks!
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"There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing."
River Rat to Mole |
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21169 |
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5100 is right in the wheelhouse of that Excalibur, so no- I very much doubt it would speed up with a bigger prop. The speed vs rpm numbers are pretty much spot on with a tsc2 196 (45mph @ 5000rpm), which is weird- I would expect a bfn hull to have more than a 2mph advantage, and be closer to 1:1 (speed vs rpm). It should have a significantly faster hull and a few hundred lb weight advantage.
I'd get a more accurate speed measuring device if you really want to know what it's capable of. |
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Ben#155
Senior Member Joined: June-24-2008 Status: Offline Points: 228 |
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For me it is ok so,i know that the floor is not to good so it can be that i have some wet foam. but would that make a difference? i will replace the floor next winter. I first will put the the ford 351 in my 72 skier.
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