79 nautique rebuild |
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 391 |
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Don't see any wear on the cam, nothing bad in the pan, i think o.k. for 42 years old and sitting for 7 years now. 5-6 teeth in a row on the flywheel ring are worn, hopefully one of the shops around here can install a new one and for good measure while it's apart, i'll order a new dampener as well. |
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 391 |
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Long story short about the rear mounts, bushing locates center, spacer locates elevation (shim under spacer sqaures it up). They operate smoothly now with no up/down movement of adjustable bolt. 10 laced layers on pylon 1200 sqaure inches of material.
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 391 |
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The other reasons for having separate pylon and engine mounts was simple, there was 2 inches of shaft sticking out the strut when i started.
lots of math and drawings @ 12 degrees showed moving the engine 1 1/2 inches forward gives just a touch more clearance under the engine and thus more room to adjust the alignment. (Engine should actually go up to meet shaft c/w moving forward) Everything rotated smooth, no binding and nothing sprung or felt different after the couplers were unbolted. The stern tube is out and needs to be bedded once alignment is achieved, the old cutlas will keep it centered on the shaft. The engine was slid over to port but the shaft was centered in the tube, could still be bad part somewhere The engine will get centered in the boat and the strut will be adjusted to meet up with that center instead of the other way round, at that point final alignment will come from the mounts, i'm not going to just slam on the strut and hope the engine fits under the dog box, lines up the pylon and leaves the prop wih correct spacing from strut. I can check the prop, the strut doesn't show signs of damage or repair, like mentioned everything felt smooth, but my gut is telling me be ready for a new shaft. |
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 391 |
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Pylon mount installed and all bolts tightened up to 15 pounds pylon ended up in a pretty good spot so the foot is located and ready to get bedded down and glassed in place.
The blue tape marks max length the engine angles can be and still allow the pylon mount to be removed, as seen by the stringer countours, theres more than enough room. The holes in the stringers will get resin swabbed when the foot is getting it's glass, and 4000 for final install of the mount. pics are just to confirm # of layers the stringers got during install. |
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 391 |
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I measured wanting to go underslung and luckily have a "looking down the keel" picture before the engine was removed, underslinging the axel would help considerably but there is a crossmember brace the axel would be too close to.
The tongue is extended 3 1/2 feet, that should help load and launch, it backs up real good now.
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 10718 |
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Here's a 79 on it's trailer from a CCF post sometime in the past
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 10718 |
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That's how plenty of 70's Correct craft #3 trailers were built.
Springs over the axle and sitting pretty high. The bunk height from the ground sounds about right too. Once the fenders are on, it will look right One of them low boy trailers it's not
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Dan, I noticed it looks like new springs on the trailer? I'm not so sure but wondering if the springs were originally undermounted on the axle? With them being top mounted, that sure would add to the trailer height. Tim, What's your take on the spring set up?
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67 ski nat
Platinum Member Joined: July-19-2018 Location: Santa rosa Status: Offline Points: 1184 |
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Awesome ‘looking’ tow vehicle
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 391 |
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Yeah that window
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 391 |
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The trailer bunks are 30 inches high and had to go up to 32 inches to get her back on it and forgot how high the trailer was. I think whoever approved the design was high, i get it ya know, it was the the 70's maybe they were roller boogying under the trailer on the shop floor during lunch getting all cocained up and ready for the disco later on. How did you not get water up to the roof window on the olds vista cruiser launching these things way back when ? Back on the engine tomorrow, all gaskets are here.
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 391 |
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Way back i bought this engine/pylon mount and pylon because it solved the unknowns i had. worked out perfectly to space and cut s tringers, locate the engine, floor and dog box.
At this point there is 3 issues, 1. it's out of sqaure from the heat when it got welded i think. 2. Since its out of sqaure i think it will hinder installation. 3. if it breaks @ the pylon the engine would have to come to repair it. When i located the stringers ther was wood wedged in at the back to hold spacing eqaul to the front. When i located the engine mount it had to be clamped in place, to be safe 1 hole was drilled in the stringer for location later on. Today i put the mount and pylon in to locate the foot and see how it lined up with the floor and dog box. It all looked good but still don't like putting all that force on the mount, so i cut it. Now the angle still gets bolted to the stringers and the engine still bolts to the angle but now the pylon mount is seperate. The foot can get bedded and glassed, the pylon mount can get installed without the engine being in the way. Pylon mount gets turned 180 and is notched to fit, angle gets cut 8 1/4 inches shorter allowing pylon mount to slide back and come out if need be. If the rain holds off tomorrow i can verify angle length and get a pic with the parts installed.
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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If you haven't already it would be a good idea to remove that oil pan and clean it up. They like to rust through and are almost impossible to find now. Boats looking great.
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67 ski nat
Platinum Member Joined: July-19-2018 Location: Santa rosa Status: Offline Points: 1184 |
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Hey WOT. Thanks for pics
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Dan, Unlike land based engines that rely on radiators to transfer excess heat to the air, our marine engines have unlimited supply of water to get rid of the heat. If the RWP (raw water pump) is doing it's job, there's not a problem with cooling. One area of concern is bilge venting to exhaust any potential fuel vapor. The typical method is to have forward facing vents on the foward deck or sometimes forward facing vents on the gunnels. Then aft facing vents on the aft deck. The combination has worked for many years.
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 391 |
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Hot air out i hope, should circulate better ? Smithfamily, thank you for the nice words. The plugs are in order as viewed from the flywheel. The valve cover bolts were just passed finger tight and that was where the worst of the oil seepage was Before the plugs went back in i put 1/2 teaspoon of 10w40 down the holes and rotated the engine past the timing mark 8 times by hand. Heres the plugs and top end, cylinders all looked shiny, engine has been sitting seven years. What do you guys think ? Looks ok right ?
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Smithfamily
Platinum Member Joined: December-26-2007 Location: Orlando, Fl Status: Offline Points: 1602 |
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Its really looking good!!
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Js
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Nice work on the helm adapter.
What's the air conditioning vent on the dog house for?
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 391 |
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 391 |
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Helm conversion adapter plate.
The original helm was updated at some point with the adapter for the new cable. It feels good left and right, but the bushings are worn and the shaft/wheel have a lot of play. Parts for the original helm for repair are no longer available, they still make it new tho, 400 bucks. Other option was 89 bucks but the cutout ended up being smaller and the bolt pattern is different. Ski boat parts online mentioned a plate, i just attempted to fancy it up. Next boat, no hole shall be left unpatched. Trailer ready for bunks and there is a tongue extension ready to get welded. Not looking forward to bunks, didn't understand the old ones, ripped on a 45 the whole length, bolts staples carpet could have been from factory, Oh ! now i understand !
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Dan,
The trailer's looking great. I too have used the ZRC many times and have found it great for rust prevntion. OK, what's the round plate for? Spare tire mount?
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 391 |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 10718 |
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I wouldn't be holding your breath waiting for Pertronix to make a version of that with the RR gear on it. It's been in production a long time and it hasn't happened so they probably have very little reason to do it now. Maybe Ron at skiboatpartsonline knows something like where to get a .500 inch RR gear for it......or maybe not |
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ultrarunner
Platinum Member Joined: October-02-2005 Location: Ridgefield, Ct. Status: Offline Points: 1809 |
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Carolina Blue, as it should be! GO HEELS! Classy
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 391 |
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The prop is an oj nibral 4 blade, on the hub behind the prop nut it reads oj 13, on the side of the hub it reads oj 1011. It could be a 13x10 reworked to 11, but the 10 & 11 stampings on the hub side don't look different like if it came out of a prop shop.
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 391 |
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Keno, thank you for the tune up info, yes it's the petronix that isn't rh rotation yet.
I wouldn't even attempt a gear swap, i figured it was pressed on and off, i don't have those kinds of tools, Leave it alone and cross my fingers. Which is what i should've done w/ the carb, its apart and in the chem dip. |
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Duane in Indy
Platinum Member Joined: October-26-2015 Location: Indiana Status: Offline Points: 1578 |
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In theory Pete is correct. BUT I have installed numerous gears and the cross drilled hole for the pin never seems to be in the correct location. Plus the diameter of the shaft has to be correct to that gear. There is a dimension from the mounting face of the dizzy to the bottom of the gear that also has to be correctly located. Seems as though they just install the gear to proper height and then pin it in a drill press, never is on center line. To add to the problem is the fact that some gears are not pre drilled for the pin anyway. Just my experience. Good luck, Duane |
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Keep it as original as YOU want it
1978 Mustang (modified) |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 10718 |
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Autolite 24 or a cross reference to your favorite brand of plug. With the Prestolite module, you'll see PCM literature with .035 and .045 Go figure Either will work The screwdown cap distributor says 10 degees BTDC for initial timing at idle speed. WOT rpm 4000 to 4400. If you have the original 13X13 prop, you should have no problem getting to 4400 if the engine is healthy. What brand of distributor are you talking about at at Skiboatpartsonline? a Pertronix I'd figure since it's what they sell there. If it's a Pertronix, you can't swap your old gear on to the Pertronix shaft like Pete seems to think you can, ....well you could but it would be a really, really sloppy fit It would be nice to know the brand and shaft size before making a statement like that
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Dan, It's the gear on the distributor shaft that makes it a RH/reverse rotation. So, You can purchase a new distributor and install your old gear on the new.
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wayoutthere
Senior Member Joined: February-28-2020 Location: Florida Status: Offline Points: 391 |
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Just placed an order with skiboatpartsonline, starter, harnesses, coil, packing, impeller kit, bearings, etc and he gave me some good reccomendations on misc stuff.
I forgot to ask about a good spark plug and gap. A ways off yet but idle rpm timing and wot rpm info is greatly appreciated. Also the rh rotation distributor isn't available yet so we'll hope the existing one still works. Oops had to edit where the order was made
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