Taking Apart TBI Top End - Things to Pay Attention to скачать в хорошем качестве

Taking Apart TBI Top End - Things to Pay Attention to

When going to rebuild the top end of your KTM / Husky TBI 2-stroke, there are 4 important things to look for, and I will go over each one here: Piston and Cylinder Head Condition - Scratches on the piston is one thing to make note of. We also look for scratches in the cylinder head. The cylinder head scratches can be cleaned up with a ball hone hand drill attachment if you have one handy. You can replace the piston if the scratches are bad. In our instance, they don't look bad, so will leave as is. Condition of Piston Ring - I also look at the piston ring as well, making sure the face of the ring has been cut in properly. It should look shiny and flat all thew ay down the face. This means it's broken in properly and seating fully. Sometimes synthetic oil can prevent the ring from wearing in properly, requiring a shift to petroleum based oil until it does. I use legend oil which is half petroleum and half synthetic. You can also use tech break in oil. Then you can switch back to fancy synthetic oil after. As your rings wear in, your compression should go up. Cylinder Base Gasket - Cylinder base gasket is worth taking a good look at as well. The TBI bikes don't come with sealant on the gaskets. I use clear RTV silicon on a fresh gasket during the rebuild for a better seal. O-rings - Replacing the O-Rings with the proper size O-Ring is important. Many aftermarket rings are off by a bit, and can cause you to run low compression. American sizes are slightly smaller. It's best to get the OEM stock or appropriate metric size O-Rings for proper rebuild results.