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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 484 |
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Posted: May-16-2023 at 9:11pm |
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A while back in a thread (probably a year ago & believe it was a new member stringer job) another member posted a few pictures of 1 of the boats he owns.
This particular boat has a molded insert glued onto the hull. said insert is the stringers, bulkeads etc and what was very interesting was the fact that there is a water box above the strut, so the packing gland is in the box instead of the hull bottom. The owner also posted some brochure pics as well. I googled and searched for three days with no luck, I'm wanting a bowrider and there some older 80's ish ski boats like supra, brendella etc that are in the condition and price range needing a full rebuild. Broad stroke of my plan for world domination is (from the transom forward) building a 2 into 1 all bi axial glass stringer set up. So from the transom forward, minimum width for shaft & steering, 45 out to engine cradle width then just forward the front engine mounts, 45 inwards into 1 stringer running to the bow eye, the single stringer would likely punch thru so the pylon could get mounted to it (like a 4 way stop but 2 come in on a 45) Not a whole mold or liner type insert like the other members boat i'm asking about, just 1 stringer mold, (approx 3 inches wide) pop out a part scribe to fit just like wooden stringers,bonded together into desired shape- ie 2 into1 and glassed in place. No bulkheads in between, maybe 2 or 3 per side outboard the 2 into1 stringer for floor stiffness, have to get that far first. Seat boxes and 45's front and back the engine should help with strenght/stiffness Floor pan with glass seat boxes driver, observer & split rear bench if walk thru transom, gas tank not sure yet, depends on hull brand and if possible or not. It's a work in progress idea subject to mods as needed. Got a couple pages of notes, measurements etc off the 79 nautique and the same similar hull would make a great candidate because, again, the hull is layed up really nice and strong, but another brand is the answer on this. Thanks guys for any help finding that thread and pics to help the brainstorming. Late edit in after all the spelling corrections, the outward 45's behind the engine could i guess come together into a V between the stringers and notched/ holesawed for whatever it interfered with since that V would likely add torsional strength. |
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67 ski nat
Platinum Member Joined: July-19-2018 Location: Santa rosa Status: Offline Points: 1194 |
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#perfectscreename
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11125 |
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Maybe A Look In the Below thread would be Useful
And it's got a link to his Ball of Spray thread with a bunch of pictures missing. Malibu calls the stringer system FIBecs and the box around the shaft HDS (hydrophonic dampening system)
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GottaSki
Grand Poobah Joined: April-21-2005 Location: NE CT Status: Offline Points: 3363 |
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Yeah, BOS moved, and every picture on the site evaporated 😕
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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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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 484 |
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Thank you, you guus know yoir stuff for sure.
Malibu ! I've been thru dozens of manufactures pages, forums, rebuild threads, pictures, you tube resto's etc etc, there wasn't 1 word about it. First google search today, hydrophonic, google fills in the rest i click and takes me to a malibu forum about the waterbox, been typing waterbox and every other combo coming up with nothing. Really appreciate the help and knowledge base on ccfan. Thank you. I'm also having zero luck posting pics, read the post but don't speak computer. Site even let me copy and paste it from another site like it used too. |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11125 |
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Did you watch the video about posting pictures (last post on 2/7/23) along with the word description ? Here it is again
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Riley
Grand Poobah Joined: January-19-2004 Location: Portland, ME Status: Offline Points: 7954 |
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 484 |
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Thanks guys, and i'll give those instructions a try.
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 484 |
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Somebody on here ski'd behind one of these things. Neighbors on the huron river where i grew up had one back in the early 70's. It sounded funny (whined in reverse i think). Seen a few on youtube converted to v8 merc outdrive and another to berkley jet pump. I'd gut one of these johnson hulls and on the very cheap install a ski boat driveline in one just to see what it did while the ski boat hull was going thru new stringers etc. I'd have the material on hand and it does have a flat bottom w/ the tracking strakes running right down the hull |
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Faceplant
Senior Member Joined: July-27-2013 Location: Otter Lake , Mi Status: Offline Points: 418 |
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My parents had one of these wile growing up. Skied behind it but was still a newbie. Remember that we used to get quite a few looksie loos from people. Was a very cool boat though .
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Feels like I am hanging 10 but in reality - probably hanging 6.
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 484 |
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For sure a cool boat, it's 180 all the cookie cutters out there how could ya not want one. problem is all the 60's 70's hulls that would make great direct drive conversions are far and few between.
The 79 i had was 700 bucks on the trailer. I know theres another one out there (ski boat) and some member drives by it everyday. Sooner or later word will make it to them i'm looking. |
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 484 |
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i'd appreciate some input on these boats and if there is another year/brand/model i'd like to hear about those as well i'm over fit and finish, won't spend that money. more interested in; quality of running gear ? how does it ski ? how big of a hit does the slalom wake take between the boomerang and mobius as an example since they are currently listed for sale? feel free to explain that difference on any brand you know about. bowrider? i want it for loading/launching as much as the 2 extra seats [company] but are there drawbacks ? [adding a rear pylon/ski eye for fun skiing/tubing is in the plan so rear seating isn't lost when friends/family are on board] main pylon stays in place. what else ? right now these are listed around lake norman 94 prostar 190 8,900 94 moomba boomerang 9,500 94 brendella pro comp 4,500 99 moomba mobius open bow 12,000 95 brendella sport comp open bow 8,5 there is a mid 90 malibu near my home in the 10 range but i'm looking out of town were ski boats are more prevelant, [or where would you look]. there are a handfull of supra ts6m but they have kevlar in the laminate and if it needed stringers, repairing kevlar is above my ability. i don't mind a long weekend drive,seatrial for the right boat. what say you? |
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 484 |
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So heres a 93 nautique up in nc for 6k, it needs engine work to begin with.
The thermostat housing that bypasses water to the manifolds looks similar to the one on the 79. These castings and their availability is my only concern with the 351. In fact, the whole front of the engine/accy's on the 93 look just like the 79. I'm in salt and i've seen these castings become corroded and fail in lake eerie where i grew up at. With the 350 anything and everything is available in just about any material and finish you'd care to have. So are my concerns about these castings for the 351 founded or not ? What does a rebuild cost ? Say gaskets seals, valve job, hone & rings on a rh 351 ? https://www.facebook.com/marketplace/item/1110484729908590/?ref=search&referral_code=null&referral_story_type=post&tracking=browse_serp%3Ac5f3ae57-d970-496c-8123-f7ca480c26bc |
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MrMcD
Grand Poobah Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3750 |
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I believe Supra started using the same fiberglass mix that Correct craft was using in the 90’s. Supra is a very well built boat. They are heavy and have less top speed than the other options including Nautique but they drive and ride well. Ski wake is pretty good.
I prefer Chevy engines since I am so familiar with them but the 351W is one fantastic ski boat engine. Parts might cost 20% more than the same parts for a Chevy but most are easy to get when needed. A GT 40 engine is actually hard to beat for boat use. Hard for a Chevy guy to admit but it is true in all respects. The early Malibu, prior to 1990 had fantastic ski wakes but the boats do not handle like a Nautique, they do not steer as well. Going straight, great wake, fast and light boats. Turn them and they act up. They do not turn the same with 5 people on board. 3 people on board they handle a lot differently. Nice boats but test drive them and add people before buying. I had my 1987 Malibu for 20 years. It never handled as well as the 1978 Nautique I had for 10 years before it. The wake was much better though. My current 1995 Nautique wake is far better than the 1978 Nautique and nearly as good as the 1987 Malibu but the 95 Nautique handles like a sports car, 1, 2, 3 or 6 people on board it drives the same, very predictable unlike the Malibu. I really like the 95, I need to avoid driving the 1997 and up because I hear the wake is better and they drive better. Hard to believe because the 95 is really nice. Being much older now I no longer ski at 36 mph, more like 32 is my new norm.
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11125 |
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I'd say they pretty well founded since they're NLA from PCM for a lot of years now and you have to scrounge for used stuff. The front of the engine is basically just like your 79 was. You're asking about rebuilding a RH engine, are you sure that's what's in the boat? Most 93's had a LH engine with the PCM 40A 1.23 to 1 transmission that reversed prop rotation and there were a small number with a RH engine and a PCM 40I 1 to 1 transmission. By the way, parts for either of those PCM transmissions are pretty much NLA and then you're stuck buying a new PCM 80A or 80I for a pretty good chunk of change.
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 484 |
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Thank you both for the insight and technical explanations, it's exactly what i'm looking for.
MrMcD, How it drives and turns is as big a part as the ski wake. The 79 turned really hard (edit in, by hard i mean good and tight) and adding power thru the turn made it better-- it did have the rudder w/ the tuning fin and left or right it felt the same. My only concern with supra is (as i understand has kevlar in the layup) i have zero experience with kevlar but understand it is difficult to repair. But the supra is a nice looking boat, now if kevlar is only in tue tsm6 and not another model that would be good to know about. Keno i didn't inquire about the engine, just went with rh in asking the rebuild cost. Didn't know it has the pcm 40 transmission but have seen the threads about them and converting to the 80. Personal preference would be the velvet drive. To continue ; How do these drive turn and ski ? yes i know it's the devils boat but theres more around in my price range, even tho i also know by the time i'm done the budget will be blown no matter which hull and price i start from. https://www.facebook.com/marketplace/107381892625031/?hoisted_items=187027737703948 Drive turn and ski on the brendella ? https://www.facebook.com/marketplace/item/789221232893350/?ref=search&referral_code=null&referral_story_type=post&tracking=browse_serp%3Aafc0e726-78fd-4af6-b371-d32c948ae63c Thank you, |
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 484 |
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This is 100 miles around orlando.
https://www.facebook.com/marketplace/orlando/search/?query=ski%20boat&ref=global_search_module_see_more&exact=false |
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 484 |
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How about transmission length between the pcm and velvet drive ?
Shaft length ? I would install a new dual taper regardless. Do Pcm and velvet drive share the same bellhousing, dampener plate and starter ? Obviously looking at donor boat for chevy velvet drive conversion into a good hull, hopefully with good cosmetics, no problem with glass work. Inquired about a boat and got an immediate reply, asked for pictures of the engine and transmission, Haven't heard back ! |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11125 |
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Click on the link and you'll find some info. There are also links in those links
link
Same bellhousing, same starter, but different damper plates. (different spline count) so PCM could make you pay the money for their plate. This is for a PCM 40i (1 to 1 ratio) and BW 10-17, if you're wondering about a 40A down angle 1.23 to 1 ratio),length differences engine mounting angle differences too.
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 484 |
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Thank you Keno ! I'll be reading up.
Speaking of down angle transmissions there is a ski boat with a down angle pcm, i'll try to find the link. Mercruiser has an installation pdf that i'll attach, it shows some 5.7 ski, ski scorpion etc with the 10-17 and some with a hurth down angle but doubt ever coming across one, The velvet drive is the way to go in my opinion, but what the heck do i know. Thanks again. Heres that merc installation filter https://www.mercurymarine.com/en/us/documents/installation-drawings/ i used it to determine engine install on the other boat without test fitting, well i had to throw a block with crank, bearings, flywheel and hub in to complete alignment but the diagrams provided all the math for the 496 mag ho on an improvised driveline. That boat and how i set it up is back on the race course, it now has a 700 hp race motor in it and was converted to sit down. That boat was laid up in the mold as a race boat with full crash bulkheads no cabin etc etc. It's very fast and turns very good, lots of bite with no slip n side. New owner sent me some pics, an acceleration video and i've seen it race on the livestream. Might go to englewood this year and see it race in person. |
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 484 |
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Well, thought i found a boat. Watched it for a week or so then yesterday with a short list of questions, logged into facebook to try and strike a deal., didn't have to ask, The price was lowered and add changed, no title parts boat, very wary of the no title issue. Anyone know the seller or is he a member? Heard getting a title is a big deal. Keep looking.
https://www.facebook.com/marketplace/item/1360311191589008/?ref=search&referral_code=null&referral_story_type=post&tracking=browse_serp%3A6d546907-9fa9-48bb-bbd7-0bf25a93ab6c |
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