On a small block Chevy there are four bolts positioned so that if a bolt is too long it will contact the pushrod and either bend the pushrod or damage it and put metal shavings into the engine.Īssuming the bolts are the proper length, make sure the threads are clean and place some thread sealer on the inner eight bolts. A too-short bolt may pull threads out of the head but bolts that are too long can also be bad. Now with the clearances checked, inspect the intake manifold bolts for length. If the clearance is too wide (3/8 inch or more), then the end seal will not contact the manifold which will cause a massive oil leak. If the clearance is tight or non-existent then the end rails will need to be milled. If this clearance is roughly 1/4 inch or so, this is sufficient. This company focuses on building and selling Chrysler engines and components but this wax kit will perform well on any V8 engine.Īssuming the intake bolt holes all line up and all the bolts test fit okay, also check the clearance between the bottom of the intake end rails and the china wall on the block both front and rear. This website also has instructions on how to use the product. If you think the ports may not line up, there are wax string kits available from Hughes Engines that allow you to check the alignment of the intake. In rare cases, the bottom of the intake port may not be fully sealed and will pull oil up into the intake ports. This will generally require the intake surfaces to be milled an equal amount to allow the bolts to line up. This occurs because the block, heads, or both may have been milled which changes the relationship of the intake manifold to the intake ports on the heads. If they do not, the intake may need to be machined to properly fit the engine. With the gaskets in place, drop the intake manifold into place to ensure the bolt holes line up with the holes in the heads. You might want to use a looped piece of masking take to hold the intake gaskets in place. Next, place the two intake gaskets in place for a test fit. If you are installing a used manifold, make sure the replacement manifold sealing surfaces are also clean and free from grease and oil. The china walls we referred to are the curved end portions of the block that look like the Great Wall of China. Start the cleaning process by using paper towels, newsprint, or small towels to seal the intake valley and intake ports so dirt and grime do not fall into the engine. The next step is to emphasize that the cylinder head and china wall sealing surfaces must be very clean and dry with no residual gasket material, oil, or grease. ![]() This will wedge the manifold up and break the seal to allow you to remove the intake. Try using very short screwdriver with a wide blade into the area at the front of the intake manifold and drive it in with a small hammer. If the intake was sealed well, it may stick to the engine very tightly. Bump the engine over until the distributor points to Number One spark plug and then remove the distributor. We’ll assume you have not started yet, so the first item is to drain the coolant out of the radiator to avoid spilling coolant into the lifter valley. How to Install an Intake Manifold on a Small Block Chevy Summit Racing also makes a very good intake gasket that’s very affordable. The performance gasket I often use for a stock or mild performance cylinder head intake port is this one, part number FEL-1205. ![]() There are several different kinds of intake gaskets from Fel-Pro both in stock replacement and performance gaskets. To answer the gasket question, I’ve been using Fel-Pro gaskets for decades but there are plenty of quality gaskets from Victor-Reinz, Cometic, Edelbrock, Mr. There are several important points to consider when installing a new intake gasket on a small block Chevy and the following suggestions also relate to installing an intake on any engine where the lifter valley is sealed by the bottom of the intake manifold such as a small block Ford or Mopar. Is there a particular gasket that works well? Thanks F.S. I’ve done some research as far as swapping the distributor so I think I have that covered, but I’m curious about any tips or tricks you can suggest for sealing the intake manifold to the heads. We plan to add an aluminum intake manifold to the 350 small block Chevy in my 1972 Chevy C-10 pickup. Loading Radios, Transponders & Scanners.I’m a beginner when it comes to working on engines.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |