{"product_id":"acl-race-rod-bearings-42mm-4age-4agze-aw11-ae92","title":"ACL Race Series Rod Bearing Set | 42 mm 4A-GE \/ 4A-GZE (1986-89 MR2 \/ 1987-91 Corolla)","description":"\u003ch2\u003eACL Race Series Rod Bearing Set\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFor 1986–1989 Toyota MR2 AW11 and 1987–1991 Toyota Corolla AE92 coupe equipped with 4A-GE \/ 4A-GZE engines using the 42 mm crankpin \/ 45 mm rod-housing interface.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eACL Race Series rod bearings are a performance-oriented option for a carefully measured 4A-GE or 4A-GZE rebuild. Their tri-metal construction combines hardened steel backing, a copper-based lining and a lead-tin-copper overlay. Standard, extra-clearance, reduced-clearance and crank-undersize choices let the engine builder match the bearings to the actual crankshaft and connecting rods, rather than choosing by model year alone.\u003c\/p\u003e\n\u003cp\u003eJapan-market coverage includes 1986–1989 Supercharged MR2 and 1987–1989 naturally aspirated MR2 with the later 42\/45 mm assembly; U.S.-Market MR2 coverage is 1988–1989. Japan-market coverage also includes 1987–1991 Corolla AE92 coupes with 4A-GE and 4A-GZE engines; U.S.-Market Corolla GT-S coupe coverage is 1988–1991. The engine family and measured bearing interface remain essential restrictions.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace Series construction:\u003c\/strong\u003e Hardened steel backs, a copper-lead-tin lining, nickel barrier and lead-tin-copper overlay.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurpose-built bearing geometry:\u003c\/strong\u003e Increased crush and eccentricity, with tightly controlled wall thickness, for performance engine applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured-clearance choices:\u003c\/strong\u003e Three nominal-standard crank options and two crank-undersize options, without confusing extra clearance with a reground crankshaft.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eChoosing the Correct Bearing Size\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eStandard clearance\u003c\/strong\u003e is the reference choice. \u003cstrong\u003e0.001 in extra clearance\u003c\/strong\u003e provides approximately 0.001 in (0.025 mm) more diametral clearance than the standard version on the same journal. \u003cstrong\u003e0.025 mm reduced clearance\u003c\/strong\u003e provides approximately 0.025 mm (0.001 in) less clearance than the standard version on the same journal. These are selection differences, not guaranteed finished oil-clearance values.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e0.25 mm crank undersize\u003c\/strong\u003e and \u003cstrong\u003e0.50 mm crank undersize\u003c\/strong\u003e are for the corresponding reground crankpin family. They are not extra-clearance options for an unground standard crank and do not repair an oversized rod housing. The correct choice depends on the finished crankpin diameter, rod housing, bearing geometry and measured assembled oil clearance. Do not substitute one size for another.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\n\u003cp\u003eEvery application below requires the \u003cstrong\u003eoriginal-style 42 mm crankpin \/ 45 mm rod-housing interface\u003c\/strong\u003e and the correctly selected bearing size. U.S. dates are model years; Japan-market dates describe production coverage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eToyota MR2 — AW11 \/ MK1\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1987–1989:\u003c\/strong\u003e JDM \/ naturally aspirated 4A-GE with the later 42\/45 mm assembly introduced at the September 1987 production change. \u003cstrong\u003eSeptember transition builds require actual crank\/rod identification, not the month alone.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1988–1989:\u003c\/strong\u003e U.S.-Market \/ naturally aspirated 4A-GE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1986–1989:\u003c\/strong\u003e JDM Supercharged \/ 4A-GZE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1988–1989:\u003c\/strong\u003e Supercharged (U.S.-Market) \/ 4A-GZE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eToyota Corolla \/ Sprinter — AE92 — Coupe\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1987–1991:\u003c\/strong\u003e Corolla Levin \/ Sprinter Trueno (Japan-market) \/ 4A-GE 16-valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1987–1991:\u003c\/strong\u003e Corolla Levin \/ Sprinter Trueno GT-Z (Japan-market) \/ 4A-GZE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1988–1991:\u003c\/strong\u003e GT-S coupe (U.S.-Market) \/ 4A-GE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFitment Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eNot for original 40 mm crankpin \/ 43 mm rod-housing assemblies, including original AE86 4A-GE and early naturally aspirated AW11 engines of that size. Original 4A-C, 4A-F and 4A-FE assemblies are not covered.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA swap, replacement crankshaft or aftermarket rod does not establish compatibility by chassis or nominal diameter alone.\u003c\/strong\u003e Bearing seats, locating tabs, axial width, crank fillets and assembled clearance must match the supported configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eToyota numbered selective bearing grades do not directly map to these ACL options.\u003c\/strong\u003e No universal oil-clearance or machining target is implied.\u003c\/li\u003e\n\u003cli\u003eThe listed factory applications use 16-valve engines. \u003cstrong\u003e20-valve engine applications are not covered.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBearing Position:\u003c\/strong\u003e Connecting-rod big end\u003cbr\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Race Series tri-metal with hardened steel backing\u003cbr\u003e\n\u003cstrong\u003eNominal Crankpin Family:\u003c\/strong\u003e 42 mm\u003cbr\u003e\n\u003cstrong\u003eStandard Crankpin Reference:\u003c\/strong\u003e 41.985–42.000 mm\u003cbr\u003e\n\u003cstrong\u003eBare Rod-Housing Reference:\u003c\/strong\u003e 45.000–45.024 mm\u003cbr\u003e\n\u003cstrong\u003eMaximum Shell Axial Length:\u003c\/strong\u003e 17.10 mm\u003cbr\u003e\n\u003cstrong\u003eShell Design:\u003c\/strong\u003e Identical upper and lower halves\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eRod Bearings and Main Bearings\u003c\/h2\u003e\n\u003cp\u003eRod bearings support the connecting rods on the crankpins; main bearings support the crankshaft in the engine block. \u003cstrong\u003e\u003ca href=\"https:\/\/preserverad.com\/products\/acl-race-main-bearings-toyota-4age-4agze-ae86-aw11\"\u003e\u003cstrong\u003eACL Race Series standard-size main bearings\u003c\/strong\u003e\u003c\/a\u003e\u003c\/strong\u003e are a separate, complementary product for a compatible standard-size main-journal assembly. Selecting a rod-bearing undersize does not determine the main-bearing size.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eAvailable Configurations\u003c\/h2\u003e\n\u003cp\u003eChoose one bearing size. Every option includes eight rod-bearing half-shells, enough for four connecting rods. Main bearings, thrust washers, connecting rods, piston-pin bushes and gaskets are not included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBearing Size\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eStandard clearance\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e0.001 in extra clearance\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e0.025 mm reduced clearance\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e0.25 mm crank undersize\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e0.50 mm crank undersize\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACL","offers":[{"title":"Standard clearance","offer_id":67851677794613,"sku":"1500","price":79.95,"currency_code":"USD","in_stock":true},{"title":"0.001 in extra clearance","offer_id":67851677827381,"sku":"1501","price":79.95,"currency_code":"USD","in_stock":true},{"title":"0.025 mm reduced clearance","offer_id":67851677860149,"sku":"1502","price":79.95,"currency_code":"USD","in_stock":true},{"title":"0.25 mm crank undersize","offer_id":67851677892917,"sku":"1503","price":79.95,"currency_code":"USD","in_stock":true},{"title":"0.50 mm crank undersize","offer_id":67851677925685,"sku":"1504","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/6005\/8421\/files\/acl-race-series-rod-bearing-set-01.png?v=1792551131","url":"https:\/\/preserverad.com\/products\/acl-race-rod-bearings-42mm-4age-4agze-aw11-ae92","provider":"Preserve Rad","version":"1.0","type":"link"}