| The term 'big block' is related with automobile | | | | Step 3: |
| engines. It is actually a series of engines that | | | | The possible leaks should be sealed now. It is |
| were of large displacement and were developed | | | | essential to understand that a lot of bolts |
| several years ago. A proper manifold should be | | | | ultimately end up close to the head area. There |
| installed on a vehicle to make sure that the engine | | | | will be a lot of oil present. To prevent leaks, it is |
| runs efficiently. It is not too hard to install a | | | | ideal to use non-hardening sealant on the bolts. |
| manifold on a big block. Here is a simple guide. | | | | Step 4: |
| Tools Needed | | | | Once the bolts on the manifold and block have |
| - Basic tools like ratchet, wrench and torque. | | | | been tightened, it is essential to understand the |
| - Protective gear like safety clothing | | | | tightening and loosening sequences which are |
| Materials Needed | | | | needed. Some can vary but the loosening and |
| - Silicone sealant | | | | tightening sequence of many blocks and manifolds |
| - Non-hardening sealant | | | | start from the middle and go outwards. |
| - Oil | | | | Step 5: |
| - Rags | | | | It is important to ensure that each bolt is |
| Guidelines | | | | tightened to the same rating with torque wrench. |
| Step 1: | | | | However every bolt may not be accessed with a |
| Every gasket has to be inspected and it must be | | | | torque wrench. In case this happens, then use a |
| made sure that they are sealed in a proper way. | | | | box wrench. |
| If bolts require sealing, then it is better to seal | | | | Step 6: |
| them quickly. The gasket and the water ports | | | | This task requires working with larger vehicle and |
| have to be given particular attention. If the decks | | | | steel parts, it generally means that it is important |
| of blocks or heads were machined, then they | | | | to follow safety precautions. Anyone who is |
| may appear to be lower. If cork or rubber | | | | helping in this task must also be aware of the |
| gaskets are present in the intake, then the block | | | | safety measures while installing the manifold. |
| would not get firmly fixed to the manifold. To | | | | Tips & Precautions |
| make an air tight connection, it is suitable to use | | | | - Safety should be your topmost priority at all |
| silicone. | | | | times. When lowering the manifold to its position, |
| Step 2: | | | | specific precautions must be followed. Caution |
| Now, the manifold has to be installed. Ensure that | | | | must also be exercised when silicone is being used |
| everything is right with the oil splash guard. When | | | | as a sealant. |
| satisfied, lower the manifold into place. Ensure that | | | | - This is the process to do the task in a DIY |
| adequate help is available to line up the manifold | | | | style, it is helpful to save a pretty fine amount of |
| bolt holes. Some adjustments have to be done | | | | money. |
| for lining up the holes. | | | | |