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The 1976 Glastron boat is a 16-foot fiberglass tri-hull bowrider with a 65hp mercury engine. The hull is made of solid fiberglass, although some paint is flaking off the side of the bow. The benches and floor are in good condition, and the motor turns over. The engine has a variety of replacement parts available, including spark plugs, spark plug wires, and a rebuilt carburetor.
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What You'll Learn
Solid fiberglass hulls
Another benefit of solid fiberglass hulls is their ease of repair. When damage occurs, solid fiberglass is generally simpler to fix than cored structures. Repairs can be localized without affecting the integrity of the surrounding area. In contrast, cored hulls may require more extensive work to address delamination or separation of the core from the fiberglass.
However, one of the main drawbacks of solid fiberglass hulls is their weight. Solid fiberglass is significantly heavier than cored structures, which can impact the overall performance and speed of the boat. This extra weight may be a consideration for racing or high-performance boats, where speed and agility are critical. Additionally, solid fiberglass hulls may offer less insulation compared to cored alternatives, which can be a factor in certain boating applications.
Despite the weight trade-off, solid fiberglass hulls are still preferred by some boat manufacturers and owners, especially for boats with speeds exceeding 40 mph. The absence of coring material simplifies construction and eliminates concerns about water intrusion. For boats with speeds below 40 mph, cored hulls with foam or balsa cores were often used to reduce weight and improve efficiency.
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1976 Glastron with Chevy V8 engine
The 1976 Glastron is a popular model of boat, with many still in use today. This particular model has a fibreglass hull, which was common for boats of this era. Fibreglass is a strong and lightweight material, making it ideal for boat construction. Over time, fibreglass can become damaged or degraded, and it is important to repair or replace it to maintain the integrity of the hull.
One owner of a 1976 Glastron with a Chevy V8 engine reports that their boat is in good shape, with the original interior still in excellent condition. However, they have experienced some issues with the engine stalling at full throttle, which is a common problem with this model. This issue can often be resolved by cleaning the fuel tank, as the introduction of ethanol to boat fuel can dissolve old residue, causing problems with the engine.
Another owner of the same model reports a slight vibration, which led them to discover that several parts between the engine and the drive needed replacing. This can be a challenge, as parts for 8-cylinder engines are harder to find than those for 4 or 6-cylinder engines.
The 1976 Glastron with the Chevy V8 engine is a powerful and well-regarded boat, but like all vessels, it requires regular maintenance and repairs to keep it in good working order. Owners should pay particular attention to the engine, fuel system, and drive, as these areas are prone to issues over time.
Overall, the 1976 Glastron with the Chevy V8 engine is a classic and sought-after model, with a strong following among boating enthusiasts. With proper care and maintenance, these boats can provide many years of enjoyable use.
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1976 MFG 15 Fiberglass tri-hull
Tri-hull boats were very popular in the 1970s, and the 1976 MFG 15 Fiberglass tri-hull is an example of this. This particular model is 16 feet long and is made of solid fiberglass. It has a Bowrider trailer and a 65hp Mercury engine. While the benches and floor are in good condition, the motor needs to be cleaned, and there is some flaking paint on the side of the bow.
The MFG 15 Fiberglass tri-hull was likely popular due to its stability at rest and its roomy open bow. Tri-hull boats have three wedges that correspond to a more squared-off bow portion of the cockpit, creating more space and a wider "stance" up front. This design also provides higher initial roll stability.
However, tri-hull boats, like the one in question, may have limitations when it comes to rough waters. They can be pounded by waves and take on a lot of water, which can be uncomfortable for passengers.
Despite these limitations, tri-hull boats are still sought after by some enthusiasts, who appreciate their unique characteristics and consider them a fun restoration project.
If you are considering purchasing or restoring a 1976 MFG 15 Fiberglass tri-hull, it is important to carefully inspect the boat for any needed repairs or improvements, such as those mentioned in the listing for this particular boat.
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1976 Glastron T187 with engine issues
The 1976 Glastron T187 is a boat with a Mercruiser 165 hp inline 6 engine. Owners of this model have reported issues with engine stalling and overheating.
One owner reported that the engine stalls when they go to full throttle, and that the engine has lost quite a bit of speed. They have already replaced the spark plugs and wires, exhaust manifold, carburetor, fuel filter, fuel pump, and rubber fuel lines, but the problem persists. A certified technician suggested that the issue might be caused by an uncleaned fuel tank. The introduction of ethanol to boat fuel may have dissolved old residue in the tank, causing engine problems.
Another common issue with this model is overheating. One owner reported that the engine temperature reached 240 degrees, and they heard a ticking noise, which could indicate a bent valve. The problem was solved by replacing the impeller, but the owner was advised to also install a thermostat as boat cooling systems require one to function properly.
Other maintenance and repairs carried out by owners of this model include replacing the carburetor, fuel pump, and spark plugs due to weak fuel pump and spark. Additionally, one owner reported having to replace the upper half of the outdrive.
It is important to note that while DIY repairs can be done on boats, it is always best to consult a certified technician or mechanic for major issues to ensure proper diagnosis and repair.
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Repairing a cracked manifold
The 1976 Glastron boat has a hull made of fiberglass. If your fiberglass boat has a crack, you can fix it yourself. Firstly, assess the damage caused by external factors like accidents or collisions. Check for cracks, holes, or depressions in the surface, as well as any discoloration or changes in texture. If the damage is located under the waterline, check for any water-filled areas as this can cause further damage if left untreated.
Once you've assessed the damage, gather the necessary tools and materials. You will need a fiberglass mat or knit fabric, resin, hardener, a squeegee, rollers, sandpaper, a power drill, and a buffer. You will also need protective gear, such as gloves, goggles, and a respirator, as the chemicals used in the repair process can be harmful.
Now, you can begin the repair process. Clean the damaged area with a mild detergent and water, then sand it with 220-grit sandpaper. Clean the area with acetone. Apply fiberglass with an epoxy or vinyl ester resin over the damaged area. If the repair is not below the waterline, you can also use polyester resin. Follow the instructions on the resin for specific resin-to-hardener mix ratios. Use a roller and/or squeegee to work the resin into the fiberglass. If you are using a chopped strand mat, avoid using epoxy resin.
Finally, apply a gel coat to match the color of the rest of the boat. If you are using an epoxy resin, you will need to use a different type of paint. The gel coat is polyester-based and will not adhere to epoxy resin but will adhere well to polyester or vinyl ester resin. If there are large cracks and holes, you may need to hire a professional to help with the repairs.
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Frequently asked questions
You should use solid fiberglass for the hull of your 1976 Glastron boat.
The hull is the main body of the boat, which excludes the deck and the superstructure.
Fiberglass hulls are lightweight, easy to repair, and resistant to corrosion.
Fiberglass hulls are more prone to punctures and can be more expensive to produce and repair than other types of hulls.
