A Simple Guide To Installing A Cork Oil Pan Gasket

Installing a cork oil pan gasket can be a challenging task, especially when done in-chassis. It is important to ensure that the gasket is properly aligned with the oil pan, and one may encounter clearance issues when installing or removing the oil pan due to limited workspace. When it comes to gasket preparation, some recommend soaking the cork in water or oil, while others suggest using sealants or adhesives like RTV, Permatex, or shellac. However, it is crucial not to use silicone sealants as they can cause the gasket to slip or split. To prevent leaks, it is vital to clean the surfaces, ensure the oil pan is flat, and be cautious not to over-tighten the bolts.

Prepping a cork gasket: soak in water or oil, or use a sealant

When prepping a cork gasket, there are several options to consider: soaking it in water or oil, or using a sealant. Each method has its own advantages and limitations, so it's important to understand the characteristics of each approach to make an informed decision.

Soaking the cork gasket in water is a traditional technique, particularly for older, pure cork gaskets. This method helps the gasket regain its size if it has shrunk during storage. However, it's important to note that this approach may not significantly impact the sealing capabilities of the gasket. The oil inside the engine will eventually seep through the cork gasket and finalise the seal.

Another option is to soak the cork gasket in oil. This method is based on the idea that oil helps create a seal by causing the cork to stretch and conform to the surfaces being sealed. However, some mechanics caution against this practice as it can lead to leaks over time as the cork dries out.

Using a sealant is a popular alternative to soaking. Sealants like RTV (room temperature vulcanizing) silicone, Gaska-Cinch, or Indian Head gasket sealer can be applied to one or both sides of the cork gasket. This approach helps improve the seal and prevent leaks. However, it's crucial not to over-tighten the bolts when using a sealant, as it can cause the gasket to creep or crush, resulting in leaks. Additionally, some sealants may not be suitable for certain gasket materials, so it's important to check compatibility.

Ultimately, the decision of whether to soak the cork gasket in water or oil, or use a sealant, depends on personal preference, the specific application, and the type of cork gasket being used. Each method has its own advantages and considerations, so it's essential to follow manufacturer recommendations and exercise caution during installation to ensure a proper seal.

Using adhesives: RTV, Permatex, shellac, grease, or sealer

When installing a cork oil pan gasket, there are several types of adhesives you can use: RTV, Permatex, shellac, grease, or sealer. Here is some detailed information on each:

RTV (Room Temperature Vulcanizing) silicone sealers are useful in situations where temperatures can reach up to 750 degrees Fahrenheit. They come in multiple colors, with gray, black, and blue being suitable for temperatures up to 500 degrees, red and orange for up to 650 degrees, and copper for up to 750 degrees. It is recommended to use the Ultra version for electronically-controlled vehicles as they are safe for sensors.

Permatex offers a range of products that can be used as adhesives for cork oil pan gaskets. Permatex #2 is a specific product recommended for use with cork gaskets. Permatex Copper Spray and Permatex Ultra Black are other options that can be used on both sides of the cork gasket. "The Right Stuff" by Permatex is a gasket maker that can be used immediately without requiring any cure time.

Shellac is a natural resin that can be used as an adhesive for cork oil pan gaskets. It has good heat resistance and can handle temperatures up to 500 degrees Fahrenheit.

Grease can also be used as an adhesive for cork oil pan gaskets. However, it is important to use it sparingly and only where needed to avoid leakage.

Sealants are another option for adhering cork oil pan gaskets. Indian Head, Gasgacinch, and belt dressing are commonly used sealants that offer strong adhesion and resistance to motor fluids.

When using adhesives for cork oil pan gaskets, it is important to follow the manufacturer's instructions and allow adequate cure time to ensure a proper seal.

Installation: dry or with a thin layer of sealer

When installing a cork oil pan gasket, there are a few different approaches you can take regarding whether to install it dry or with a thin layer of sealer. Here are some detailed instructions and considerations for each approach:

Dry Installation:

• Ensure that the cork gasket is new and has not shrunk due to drying out. If it appears shrunken, consider soaking it in water or oil to restore its size and flexibility.
• Clean and prepare the surfaces that will contact the gasket. This includes the oil pan, block, and bolt holes. Make sure they are free of any old sealant, debris, or residue.
• Check that the oil pan surface is flat and smooth. If necessary, use a ball peen hammer to gently flatten any uneven areas, especially around the bolt holes.
• Some people choose to apply a very thin coat of wheel bearing grease or white lithium grease to both sides of the gasket. This can help with sealing and also make it easier to remove the gasket in the future.
• Position the gasket on the oil pan, ensuring that it is properly aligned. You can use punches in the corner holes to help line it up.
• Carefully lift the oil pan into place and insert the bolts. Start by tightening them by hand or with a ratchet, being careful not to over-tighten. Overtightening can distort the oil pan and cause the gasket to squeeze out or split.
• Let the gasket sit for a while, then re-tighten the bolts gradually, following a random or cross pattern. This helps prevent warping.
• Check for leaks after re-tightening. If there are no leaks, fill the oil pan and start the engine.

Installation with a Thin Layer of Sealer:

• Clean and prepare the surfaces that will come into contact with the gasket, including the oil pan, block, and bolt holes. Ensure they are free of oil, residue, or old sealant.
• Check the oil pan for flatness and use a ball peen hammer to gently flatten any uneven areas, especially around the bolt holes.
• Choose an appropriate sealant. Some recommended sealants include Permatex #2, Permatex Aviation Form-A-Gasket, RTV silicone, or gasket shellac.
• Apply a thin layer of the chosen sealant to one or both sides of the gasket. Make sure not to use too much, as excess sealant can get into the crankcase and cause engine damage.
• Position the gasket on the oil pan, ensuring proper alignment. You can use punches in the corner holes to help with placement.
• Carefully lift the oil pan into place and insert the bolts. Tighten the bolts by hand or with a ratchet, being careful not to over-tighten.
• Let the sealant cure overnight or for the recommended amount of time.
• Re-tighten the bolts after the sealant has cured, following a cross pattern and being careful not to over-tighten.
• Check for leaks, and if none are found, fill the oil pan and start the engine.

It's important to note that some sources strongly advise against using silicone sealant with cork gaskets, as it can cause the gasket to slip or split during torque-up. Additionally, always refer to the manufacturer's instructions and recommendations for the specific gasket and sealant you are using.

Torque: tighten bolts with a ratchet and extension, or by hand

When it comes to tightening the bolts of your cork oil pan gasket, you have a few options. You can use a ratchet and extension, or you can tighten them by hand. Here's a step-by-step guide for each method:

Using a Ratchet and Extension:

• Ensure you have the right size ratchet and extension for your bolts. You may need a 1/4 or 3/8 ratchet and extension, depending on the size of your bolts.
• Before tightening the bolts, clean the thread holes in the block to remove any debris or old sealant. Use compressed air to blow out the holes, but be sure to wear eye protection.
• Apply a small amount of sealant to the gasket. You can use a product like Permatex #2, gasket shellac, or ultra black RTV. Some people also recommend coating the gasket with wheel bearing grease or petroleum jelly.
• Place the gasket into the oil pan, making sure it is properly aligned.
• Start threading the bolts into the block by hand. Get them snug, but don't tighten them fully yet.
• Once all the bolts are in place, use your ratchet and extension to tighten them further. Hold the ratchet handle in your hand and the extension between your second and third fingers to reduce the torque.
• Tighten the bolts in a random or cross-cross pattern, working from the centre outwards. This will help ensure even pressure and prevent warping.
• Be careful not to over-tighten the bolts, as this can cause the gasket to squeeze out or split. Watch the edge of the gasket as you tighten, and stop if you see it start to squeeze.

Tightening by Hand:

• Clean the thread holes in the block to remove any debris or old sealant.
• Apply a small amount of sealant to the gasket, such as Permatex #2, gasket shellac, or ultra black RTV. Alternatively, you can use wheel bearing grease or petroleum jelly.
• Place the gasket into the oil pan, ensuring proper alignment.
• Start threading the bolts into the block by hand. Tighten them in a diagonal or cross pattern, working from the centre outwards.
• Again, be careful not to over-tighten the bolts. Just get them snug and then stop. You can use a small ratchet or a palm ratchet (without the handle) to help you control the torque and prevent over-tightening.
• Let the sealant cure overnight before adding oil and running the engine.

Remember, the key to a successful cork oil pan gasket installation is to avoid over-tightening the bolts. This can cause the gasket to squeeze out or split, leading to leaks. Take your time, use the right tools, and don't be afraid to use a light touch when tightening those bolts.

Post-installation: check for leaks, and re-tighten if necessary

After installing a cork oil pan gasket, it is important to check for leaks and re-tighten the bolts if necessary. Here are some detailed steps to ensure a successful installation:

• Once the new cork gasket has been installed and the oil pan secured, fill the engine with oil and start it, letting it run for about 10-20 minutes.
• Check for any signs of leaks around the gasket. If there are no leaks, the installation is successful.
• If leaks are detected, tighten the bolts in a cross pattern, ensuring not to overtighten as this can cause damage to the gasket and oil pan.
• Re-check for leaks after tightening. If leaks persist, further steps may be necessary.
• It is recommended to consult a certified technician or mechanic if leaks continue, as they can provide professional advice and ensure the issue is properly addressed.

Frequently asked questions