![]() ![]() ![]() Check your engine manual for proper placement of the piston gaps. After placing the gaskets, be sure while assembling the piston in the cylinder that the ring gaps are in proper placement. This reduced clearance may result the piston to come in contact of the head causing permanent damage. Worse yet, a gasket thinner than the original will result in less deck height (piston to head clearance). If a gasket is thicker than the original, it could result in a loss of power. The gaskets and quality play an important part of engine rebuilding.Piston ring markings vary, but the marking should always face up when installed on the piston. Don’t just take someone’s word that clearance is correct, always double check it! Back in the Brew Bikes shop, it was double-checked, and clearance was. He slipped the piston through the cylinder a few times and said, "It's okay." He was asked to check again, which he refused, and said that it was correct, and that he was too busy. When complete, it looked like it was tighter. This machine shop has been in the area for over 30 years. Recently, a cylinder was bored with requested. ![]() Be sure that you have proper piston to cylinder clearance.If you find any concerning discrepancies, it's worth it to pull back apart and double check. Be sure these critical steps and precautions have been taken. We'll start with a quick review on the motorcycle top end rebuild. So, we've put together a review checklist for your rebuild, followed by a general engine break-in procedure, because your motorcycle should bring joy and fun to your life, not take tufts of hair out of your head. We want to help as many people as we can avoid that feeling. The feeling of an engine failure right after a rebuild is a sinking one, and will most likely stir up a mixture of frustration and disappointment. Putting in the time and money to rebuild your motorcycle engine is both a critical job and a prideful accomplishment. Here, we'll go over a checklist to make your build will last, as well as a step-by-step break-in process. Proper engine break-in is equally as important as a proper rebuild. ![]()
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