{"product_id":"forward-and-reverse-abuse-bore-plug","title":"Forward \u0026 Reverse Abuse Bore Plug","description":"\n\u003ch2 class=\"light\"\u003e\u003cstrong\u003eFits either of two locations\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cp\u003eThe bore plug in GM 4L60-E, 4L65-E and 4L70-E units is held loosely in place with a coiled spring pin, allowing the opposing spring and oil pressure forces to stroke it within the bore.\u003c\/p\u003e\n\n\u003cp\u003eThis constant oscillation causes the plug to wear and allows PR oil at the low overrun valve and 3-4 clutch oil at the 3-2 downshift valve to exhaust at the abuse valves. This excessive oil loss can result in delayed apply of the Low\/Reverse clutch and a tie-up of the 3-4 clutch and 2-4 band. Sonnax Forward and Reverse abuse bore plug 77754-21 resolves these problems.\u003c\/p\u003e\n\n\u003cp\u003eThis plug is used in two locations in the valve body: to separate the forward abuse and low overrun valves, and to separate the reverse abuse and 3-2 downshift valves.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eThe Sonnax plug has an increased diameter to restore proper valve body clearance in the circuits\u003c\/li\u003e\n\u003cli\u003eThe plug has a smaller retaining pin hole to reduce plug movement that results in wear\u003c\/li\u003e\n\u003cli\u003eNo tooling is required for this bore plug\u003c\/li\u003e\n\u003cli\u003eDrop-in Zip Valve™ parts install quickly and easily\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"col-4\"\u003e\n\u003cp\u003e\u003cstrong\u003eSymptoms:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDelayed Reverse\u003c\/li\u003e\n\u003cli\u003e3-4 Clutch burned\u003c\/li\u003e\n\u003cli\u003eBurnt Low\/Reverse clutch\u003c\/li\u003e\n\u003cli\u003e2-4 Band burned\u003c\/li\u003e\n\u003cli\u003e3-2 Bind-up\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003cdiv class=\"col-4\"\u003e\n\u003cp\u003e\u003cstrong\u003eCause:\u003c\/strong\u003e\u003c\/p\u003e\nWear of the bore plug in the forward and reverse abuse valve bores can allow valuable oil pressure to exhaust.\u003c\/div\u003e\n\u003cdiv class=\"col-4\"\u003e \u003c\/div\u003e\n\u003cdiv class=\"col-4 last\"\u003e\n\u003cp\u003e\u003cstrong\u003eCorrection:\u003c\/strong\u003e\u003c\/p\u003e\nThis increased diameter drop-in plug restores proper clearance in the valve body and requires no tools for installation.\u003c\/div\u003e \u003c!-- suncoast-documents:start --\u003e\u003cdiv class=\"suncoast-product-documents\"\u003e\n\u003ch3 class=\"h6\"\u003eDocuments\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0832\/4173\/0267\/files\/184206.pdf?v=1793635234\" target=\"_blank\" rel=\"noopener\"\u003eInstructions\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e\u003c!-- suncoast-documents:end --\u003e","brand":"Sonnax","offers":[{"title":"Default Title","offer_id":49129566830811,"sku":"77754-21","price":18.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0832\/4173\/0267\/files\/F198655894.jpg?v=1786547062","url":"https:\/\/suncoastperformance.com\/products\/forward-and-reverse-abuse-bore-plug","provider":"SunCoast Diesel","version":"1.0","type":"link"}