{"product_id":"180cc-big-bore-head-cylinder-kit-gy6","title":"180cc Big Bore Head \u0026 Cylinder Kit, GY6","description":"\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eIncludes:\u003c\/span\u003e\u003cdiv\u003e\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eCylinder, 61 mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003ePiston\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eClips\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003ePiston pin\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eHead gasket and base gasket\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eHead \u003c\/span\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eBig valve non emissions head\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eA9 Camshaft\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eHead comes with performance springs, retainers and keepers intake valve is 27 mm, exhaust is 23 mm. Performance A9 cam included. Your current cylinder must be style A for this kit to work. If the fins on your cylinder look different than the one in the picture then the kit may not work. May require the case to be milled. The OD of the bottom of the cylinder is 65 mm.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: verdana, arial, helvetica, sans-serif; font-size: 10pt; color: rgb(51, 51, 51);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003ePlease NOTE: If you open the gaskets, if you install the rings, if the kit is installed in anyway you CANNOT return it.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003ePlease be sure of what you're buying. Any returned kits will be subject to a 20% restocking charge.\u003c\/span\u003e\u003cspan style=\"font-family: verdana, arial, helvetica, sans-serif; font-size: 10pt; color: rgb(51, 51, 51);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003eCamshaft Timing \u0026amp; Valve Adjustment\u003c\/div\u003e\n\u003cdiv\u003e\u003col\u003e\n\u003cli\u003eSet the engine to TDC (piston is all the way at the top of the cylinder).\u003c\/li\u003e\n\u003col\u003e\n\u003cli\u003eRemove the spark plug and the small rubber plug on top of the flywheel cover, so that you can look down the hole at the fly wheel.\u003c\/li\u003e\n\u003cli\u003eUsing a 14mm socket, turn the fly wheel until you see the letter T on the fly wheel line up with a line that has been cast in the case.\u003c\/li\u003e\n\u003cli\u003eThe piston should now be at TDC.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cli\u003eThe camshaft will have one large hole at 12 o' clock and a small hole or line at 3 o' clock and 9 o' clock.\u003c\/li\u003e\n\u003cli\u003eSet the cam in the cradle with the large hole facing outward, and line the two small holes or line with the top of the cylinder head. (see fig 1.)\u003cimg src=\"https:\/\/www.monstergy6.com\/tech_cam_timing.JPG\" style=\"text-align: center;\"\u003e\n\u003c\/li\u003e\n\u003cli\u003eTilt the camshaft and slide the cam chain over the gear. \u003c\/li\u003e\n\u003cli\u003eUnlock the lock nut on the tappet. Using a feeler gauge adjust the valves to .004 mm clearance. Lock the lock nut into place.\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e ","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53092154048623,"sku":"PSTN-0120-U1","price":87.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/pstn-0120a.jpg?v=1778739363","url":"https:\/\/uedist.com\/products\/180cc-big-bore-head-cylinder-kit-gy6","provider":"United Express Distribution","version":"1.0","type":"link"}