{"product_id":"wiseco-mazda-turbo-13cc-1-258-x-78-5-piston-shelf-stock-kit","title":"Wiseco Forged Dished Piston Kit (78.5mm, 8.6:1 CR) - NA6 Miata (90-93)","description":"\u003cp\u003eWiseco Professional Series forged piston kit for the Mazda B6 1.6L 16-valve engine, the engine used in the 1990-1993 Mazda Miata (NA6). Wiseco catalogs it under \"Mazda Miata 1.6L 16V Turbo (B6)\". The set of four pistons has a -13 cc dish crown and is sized for a 78.50 mm bore, which Wiseco lists as a 0.020 in oversize, so the block must be bored and honed to suit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eWiseco-listed 8.6:1 compression ratio with a -13 cc dish; Wiseco calculates this at 83.5 mm stroke, 36 cc head chamber, 1.1 mm head gasket, +0.15 mm deck clearance and 206.5 mm block height, so the final ratio depends on your head, gasket and deck.\u003c\/li\u003e\n\u003cli\u003e78.50 mm bore (0.020 in oversize), 31.95 mm compression height, full round forging in 2618 aluminum.\u003c\/li\u003e\n\u003cli\u003eRing set included: Wiseco 7850XX, 1.0 mm \/ 1.2 mm \/ 2.8 mm ring package.\u003c\/li\u003e\n\u003cli\u003eWrist pins included: Wiseco S623, 20 mm (0.787 in) x 2.500 in, 5115 steel; Wiseco pins are offset, the same as OEM, for quiet operation.\u003c\/li\u003e\n\u003cli\u003eEngineered, forged and machined in the USA; fully machined crown, precision ring grooves with anti-detonation groove, forced pin oiling.\u003c\/li\u003e\n\u003cli\u003eArmorGlide skirt coating for seizure resistance, lower friction and quieter operation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e Mazda B6 1.6L 16-valve engine. Wiseco lists this kit by engine and does not publish model years; 1990-1993 Mazda Miata (NA, 1.6L) is shown because that car uses the B6 engine. Requires boring to 78.50 mm. Have a machine shop measure the bore and set piston-to-wall clearance before assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart number:\u003c\/strong\u003e Wiseco K554M785\u003c\/p\u003e\u003cp\u003eThis Part Fits:\u003c\/p\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003cth align=\"left\" width=\"100\"\u003eYear\u003c\/th\u003e\n\u003cth align=\"left\" width=\"125\"\u003eMake\u003c\/th\u003e\n\u003cth align=\"left\" width=\"150\"\u003eModel\u003c\/th\u003e\n\u003cth align=\"left\" width=\"80\"\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1990-1993\u003c\/td\u003e\n\u003ctd\u003eMazda\u003c\/td\u003e\n\u003ctd\u003eMiata\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Wiseco","offers":[{"title":"Default Title","offer_id":45995713036513,"sku":"WISK554M785","price":752.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0620\/6849\/0465\/files\/0f26e4ff74ce7d6635778cf3f41431ac.jpg?v=1734280283","url":"https:\/\/www.garage-56.com\/products\/wiseco-mazda-turbo-13cc-1-258-x-78-5-piston-shelf-stock-kit","provider":"Garage 56 Engineering ","version":"1.0","type":"link"}