If there is something that you will work more to keep in line, it's the compression. There is just so much that comes into play. You have so many joints on the engine that must be adequately sealed, or the overall pressure could slip. If that happens, things like the fuel pump and carburetor will not work. Making certain parts like the Yamaha Head Gasket is in good condition can make or break a rebuilding process. When you tear an engine down to repair it, we highly recommend replacing any gasket or seal you have to take off. The risk you run in damaging it is too high to try and re-use. Even a small knick you may have missed can drop the compression enough to prevent the car from running.A golf cart head gasket is an obvious one. But several other gaskets and seals need to be replaced, even if you are just doing a top-end rebuild. Call Buggies Unlimited today and ask about our entire kits that will come with everything you need.