{"product_id":"acl-race-main-bearings-toyota-4age-4agze-ae86-aw11","title":"ACL Race Series Standard-Size Main Bearing Set | Toyota 4A-GE \/ 4A-GZE Applications","description":"\u003ch2\u003eACL Race Series Standard-Size Main Bearing Set\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFor Toyota 4A-GE \u0026amp; 4A-GZE 1.6L engine applications in Corolla AE86, MR2 AW11 \u0026amp; Corolla AE92\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe ACL Race Series Standard-Size Main Bearing Set is a performance engine-bearing set for Toyota 1.6L 4A-GE and 4A-GZE builds using standard-diameter crankshaft journals. The set supports the crankshaft across all five main-journal positions and is intended for performance rebuilds where consistent clearances, bearing retention, and durability at elevated engine speeds are priorities.\u003c\/p\u003e\n\u003cp\u003eRace Series construction combines a high-tensile steel backing with a copper-lead-tin lining, nickel barrier, and lead-tin-copper overlay. ACL's extended main-bearing groove design supports oil delivery while preserving bearing surface area, and increased eccentricity helps the bearing adapt to housing distortion during high-speed operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThis bearing set is for standard-size crankshaft journals only.\u003c\/strong\u003e Crankshaft journal diameter and assembled oil clearance must be measured during engine assembly.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eACL Race Series performance main bearing set\u003c\/li\u003e\n\u003cli\u003eDesigned for Toyota 1.6L 4A-GE and 4A-GZE engine applications\u003c\/li\u003e\n\u003cli\u003eComplete set for all five crankshaft main-journal positions\u003c\/li\u003e\n\u003cli\u003eStandard-size configuration for standard-diameter crankshaft journals\u003c\/li\u003e\n\u003cli\u003eTri-metal copper-lead bearing construction with nickel barrier layer\u003c\/li\u003e\n\u003cli\u003eHigh-tensile steel backing for bearing support and retention\u003c\/li\u003e\n\u003cli\u003ePrecision-machined wall thickness for consistent assembled clearances\u003c\/li\u003e\n\u003cli\u003eExtended main-bearing grooves support oil delivery to the connecting-rod bearings\u003c\/li\u003e\n\u003cli\u003eIncreased eccentricity helps accommodate housing distortion at elevated engine speeds\u003c\/li\u003e\n\u003cli\u003eEnlarged internal-diameter chamfers accommodate performance crankshaft fillet radii\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eRace Series Bearing Construction\u003c\/h2\u003e\n\u003cp\u003eACL Race Series bearings use a multi-layer construction built for high-load engine applications. The bearing structure uses SAE1010 high-tensile steel backing, a copper-lead-tin lining, a nickel separation layer, and a lead-tin-copper overlay.\u003c\/p\u003e\n\u003cp\u003eThe Race Series design does not use a cosmetic silver tin flash. New bearings can show a dark tarnished appearance that may vary between black, brown, and blue tones; this is normal for the Race Series overlay and does not indicate a used or damaged bearing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eToyota Corolla AE86\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1983–1987 | AE86\u003c\/strong\u003e — 4A-GE 1.6L 16V engine applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eToyota MR2 AW11\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1984–1989 | MK1 \/ AW11\u003c\/strong\u003e — 4A-GE or 4A-GZE 1.6L 16V engine applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eToyota Corolla AE92\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1987–1991 | AE92\u003c\/strong\u003e — 4A-GE or 4A-GZE 1.6L engine applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFitment Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eStandard-size crankshaft journal application only\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eVerify the installed engine code is 4A-GE or 4A-GZE before ordering\u003c\/li\u003e\n\u003cli\u003eA crankshaft that has been ground undersize requires the corresponding undersize bearing set\u003c\/li\u003e\n\u003cli\u003eThis is a main bearing set; connecting-rod bearings are sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e ACL\u003cbr\u003e\u003cstrong\u003eSeries:\u003c\/strong\u003e Race Series\u003cbr\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Engine Main Bearing Set\u003cbr\u003e\u003cstrong\u003eBearing Size:\u003c\/strong\u003e Standard (STD)\u003cbr\u003e\u003cstrong\u003eEngine Family:\u003c\/strong\u003e Toyota 4A-GE \/ 4A-GZE\u003cbr\u003e\u003cstrong\u003eEngine Displacement:\u003c\/strong\u003e 1.6L \/ 1587cc\u003cbr\u003e\u003cstrong\u003eBearing Construction:\u003c\/strong\u003e Tri-Metal\u003cbr\u003e\u003cstrong\u003eLining:\u003c\/strong\u003e Copper-Lead-Tin\u003cbr\u003e\u003cstrong\u003eBarrier Layer:\u003c\/strong\u003e Nickel\u003cbr\u003e\u003cstrong\u003eOverlay:\u003c\/strong\u003e Lead-Tin-Copper\u003cbr\u003e\u003cstrong\u003eSteel Backing:\u003c\/strong\u003e SAE1010 High-Tensile Steel\u003cbr\u003e\u003cstrong\u003eMain Journal Positions:\u003c\/strong\u003e 1–5\u003cbr\u003e\u003cstrong\u003eTunnel Diameter:\u003c\/strong\u003e 52.020–52.050 mm\u003cbr\u003e\u003cstrong\u003eStandard Shaft Diameter:\u003c\/strong\u003e 47.985–48.000 mm\u003cbr\u003e\u003cstrong\u003eMaximum Wall Thickness:\u003c\/strong\u003e 2.001 mm\u003cbr\u003e\u003cstrong\u003eMaximum Bearing Length:\u003c\/strong\u003e 19.90 mm\u003cbr\u003e\u003cstrong\u003eGrade:\u003c\/strong\u003e Performance\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eInstallation Requirements\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMeasure crankshaft journal diameter before final assembly\u003c\/li\u003e\n\u003cli\u003eMeasure assembled bearing bore and calculate actual oil clearance before installation\u003c\/li\u003e\n\u003cli\u003eUse proper engine-building measurement tools and procedures; professional machine-shop verification is recommended when crankshaft condition or journal size is uncertain\u003c\/li\u003e\n\u003cli\u003eDo not use abrasive pads or paper to alter the bearing surface in an attempt to change oil clearance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Complete ACL Race Series standard-size main bearing set for all five crankshaft main journals\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACL","offers":[{"title":"Default Title","offer_id":53537993949493,"sku":"966","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/6005\/8421\/files\/acl-race-series-standard-size-main-bearing-set-4age-4agze-01.png?v=1789941138","url":"https:\/\/preserverad.com\/products\/acl-race-main-bearings-toyota-4age-4agze-ae86-aw11","provider":"Preserve Rad","version":"1.0","type":"link"}