Top 7 Best Epoxy for Cracked Engine Block (DON’T Skip This) in 2023

If you don’t want to do torch welding or brazing, then J-B Weld 8265S Original Cold-Weld Steel Reinforced Epoxy is the best alternative you can find.

You can use J-B Weld to repair multiple surfaces such as metal, wood, plastic, PVC, tiles and ceramics, fiberglass, and concrete.

It cures to create a bond that is stronger than steel and it can withstand tensile stress of up to 5020 PSI and temperature of up to 550˚ Fahrenheit (287˚ Celsius).

The fully cured J-B Original Cold Weld is waterproof and resistant to chemicals, petroleum, and acids.

And you don’t need an expert, whether you are fixing a cracked engine block, leaking pipes, broken ceramics, joining wood to metal, and so on. Whatever the size of the repair, you can do it yourself with this two-part cracked engine block repair epoxy.

You just need to mix the epoxy resin and hardener at a ratio of 1:1, apply on the target surface, and let it set in 4 to 6 hours. It will then cure in 15 to 24 hours, upon which you can tap, file, sand, drill, or even mold the weld.

JB-Weld is great for all your repair needs: household electronics, plumbing, automotive parts, toys and bikes, crafts, outdoor gear, agricultural tools and equipment, boats and swimming equipment, and whatever else.

J-B Weld 8276 KwikWeld is a fast-setting version of the J-B Weld 8265S Original Cold-Weld Steel Reinforced Epoxy. And it’s just as strong, long-lasting, and can be used to repair multiple surfaces.

You just need to mix the two tubes at a ratio of 1:1, apply on your target surfaces, and hold them in place for 6 minutes to let the adhesive dry.

Unlike the Original Cold-Weld, J-B Weld KwikWeld cures in just 4 to 6 hours. Once cured, you can tap, file, sand, drill, or even mold the weld.

The steel-reinforced KwikWeld has a tensile strength of 3127 PSI and temperature tolerance of up to 230˚ Fahrenheit (110˚ Celsius).

Like J-B Original Cold Weld, the fully cured KwikWeld is waterproof and resistant to chemicals, petroleum, and acids.

It also works perfectly for multiple surfaces, such as metal, wood, plastic, PVC, tiles and ceramics, fiberglass, and concrete.

And whatever repair project you are handling, this is a fully do-it-yourself adhesive that will deliver superior performance and quality, the first time you use it.

If there is one magic adhesive that you need for high-temperature applications where the temperature can exceed 1000°C (1832°F), then it has to be Blue Magic 18003.

Blue Magic can withstand up to 1300°C (2400°F), and so you can use it to fix cracks and holes in ovens, barbeque grills, boilers, furnaces, exhaust manifolds, car mufflers, heat exchange systems, and many more high heat systems.

QuikSteel high temperature repair kit can withstand direct flame and its strength increases with heat.

The incredible adhesive hardens like steel and the fully cured weld can be filed, sanded, machined, drilled, tapped, or even painted.

It perfectly bonds to all metals, glass and fiberglass, plastics, wood, bricks, and ceramics. The only material that you cannot use it on is rubber.

PC-Products has been in the market for over 60 years, providing quality and reliable repair products.

The Two-Part Heavy Duty Multipurpose Epoxy Adhesive Paste is a repair solution for just about anything that needs fixing, or whatever that can crack or break.

Permanent repair is super easy with this PC-7 heavy-duty multi-purpose epoxy paste. It works as a sealant, bonding agent, and filler for countless indoor and outdoor equipment and surfaces.

The adhesive paste is developed to provide maximum bonding power on many materials including many metals, concrete, wood, glass, fiberglass, bricks, ceramics, and even rubber.

You can use it to seal gas, oil and water tank leakages, plumbing and masonry faults, cracked engine blocks of whatever automobile or machine.

Its application temperature ranges between 35 and 115°F while service temperature ranges between -20 and +200°F.

The PC-7 Paste Epoxy has a high wet grab, which makes it suitable for wet and/or porous materials, overhead and sidewall applications.

The epoxy paste also provides excellent chemical resistance to acids, corrosives, fuel oils, gasoline, detergents, fresh and salty water.

Devcon is the ultimate solution for anything worth fixing. It’s a waterproof formula that you can use to repair broken, rusted, or corroded metal.

The Metal Patch and Fill rebuilds worn and damaged surfaces and fixes metallic tanks, boats, pipes, gutters, and fencing. Some customers have used it to attach heat tabs to their car engine’s cylinder head and the tabs never fall off even when the engine overheats.

The paste is resistant to oils, gasoline, and most chemicals, but it’s not suitable for long-term exposure to chemicals.

It dries to a charcoal gray color which will match an engine block color.

Devcon can be used to patch, fill, bond, and seal all metals, glasses, and ceramics. It has a tensile strength of 125 PSI and a temperature tolerance of between 40°F and 400°F.

Once it’s fully cured, you can sand, drill, or paint the weld. You can even apply a second coat of the paste after the first coat has completely dried.

Handling time: 20 minutes; Set time: 1 hour; Cure time: 6 hours

For the toughest bonding strength on metal, plastics, ceramics, concrete, glass, fiberglass, and PVC, you can trust GorillaWeld to do the job.

The waterproof formula sets in 10 minutes, enough time for you to reposition your target until you get a perfect fit. It fully cures in 24 hours.

The steel bond epoxy formula has a bond strength of 4,250 PSI and the fully cured surface can be sanded, filed, drilled, or painted. The fully cured weld has temperature tolerance of between -40°F and 300°F.

The glue dries to a dark gray color and it’ll blend well with any engine.

Yanyi Epoxy is your go-to glue for sealing broken pipes, fixing leakages in tanks and drains, repairing furniture, appliances, toys, tools, any automotive parts, and even concrete.

And it perfectly bonds metal, glass, fiberglass, wood, stone, concrete, marble, ceramics, and many rigid plastics.

It’s a breeze to use: all you need to do is kneed a small amount with your hands until the color becomes uniform, seal the area to be fixed and let it dry.

Just like Gorilla Epoxy, it settles in 10 minutes and cures to a permanent weld in 24 hours. It’s effective temperature range is -50°C to 120°C

It also has good plasticity, and so you can shape it the way you want.