{"product_id":"acl-race-4b1936h-hx-rod-bearings","title":"ACL Race 4B1936H\/HX Rod Bearings","description":"\u003cul\u003e\n\u003cli\u003eFour pairs \/ eight shells per selected set \u003c\/li\u003e\n\u003cli\u003eF20A, F22A, F22B compatible \u003c\/li\u003e\n\u003cli\u003esteel, copper-lead, overlay \u003c\/li\u003e\n\u003cli\u003eStandard journal 47.980-48.000 mm \u003c\/li\u003e\n\u003cli\u003eBearing width 19.40 mm \u003c\/li\u003e\n\u003cli\u003eIncludes 8 shells for 4 rods \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- split --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli\u003e\u003ca class=\"active\" href=\"#Description\"\u003eDescription\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"#VehicleFitment\"\u003eVehicle Fitment\u003c\/a\u003e\u003c\/li\u003e  \u003cli\u003e\u003ca href=\"#TechnicalData\"\u003eTechnical Data\u003c\/a\u003e\u003c\/li\u003e   \u003cli\u003e\u003ca href=\"#Included\"\u003eIncluded\u003c\/a\u003e\u003c\/li\u003e  \u003cli\u003e\u003ca href=\"#InstallGuide\"\u003eInstall Guide\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\n\n\u003cli class=\"active\" id=\"Description\"\u003e\n\u003ch3\u003eACL Race 4B1936H\/HX Rod Bearings\u003c\/h3\u003e\n\u003cp\u003eThese ACL Race rod-bearing sets fit the listed F20A, F22A and F22B engines, plus B20A, B21A and B21A1 DOHC applications. Check the engine code before choosing a size. If you've got an F20C, F22C or H22, check the separate 4B1912 Race family instead. The letter and number after F20 or F22 matter here.\u003c\/p\u003e\n\u003ch3\u003eChoose the bearing around the build\u003c\/h3\u003e\n\u003cp\u003eACL's Race range uses tri-metal construction with a steel backing, copper-lead bearing layer and plated overlay. If you're building an engine for medium to high rpm use, this is the range we'd discuss with your builder. If you're rebuilding for normal road use, it's worth comparing the correct Aluglide application too. That's ACL's bi-metal range for OEM-type builds. Tell your builder how you'll use the engine before settling on the bearing material and clearance.\u003c\/p\u003e\n\u003cp\u003eBefore you buy the shells, have your crank journals and rod housings checked. If a housing is out of round or a journal needs work, you'll need to address that in the rebuild. Choosing a Race set doesn't remove those jobs. We'd get the measurements first, then choose bearings that suit the parts you've actually got.\u003c\/p\u003e\n\u003ch3\u003eSize and clearance choices\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eH Standard\u003c\/td\u003e\n\u003ctd\u003e4B1936H-STD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eH 0.025 mm Undersize\u003c\/td\u003e\n\u003ctd\u003e4B1936H-.025\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eH 0.25 mm Undersize\u003c\/td\u003e\n\u003ctd\u003e4B1936H-.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHX Standard +0.001 in Clearance\u003c\/td\u003e\n\u003ctd\u003e4B1936HX-STD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eWith HX, you get ACL's nominal .001 inch extra oil clearance on standard-size journals. The H undersize versions have thicker walls for the specified smaller journal size. Those are different changes to the assembly. If your crank still has standard-size journals, an undersize set isn't the way to add running clearance. You'll need the builder's measurements to choose the correct combination.\u003c\/p\u003e\n\u003cp\u003eKeep an eye on the decimal when you're comparing the options: .025 mm and .25 mm aren't the same size. Before you have a crank ground, confirm you can get the size your machine shop needs. Once you've got the bearings, check the assembled clearance with your crank and rods. You can't get that final measurement from the box label.\u003c\/p\u003e\n\u003ch3\u003eReference dimensions\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard journal\u003c\/td\u003e\n\u003ctd\u003e47.980-48.000 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRod housing bore\u003c\/td\u003e\n\u003ctd\u003e51.004-51.024 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBearing width\u003c\/td\u003e\n\u003ctd\u003e19.40 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eH standard maximum wall\u003c\/td\u003e\n\u003ctd\u003e1.496 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHX standard maximum wall\u003c\/td\u003e\n\u003ctd\u003e1.483 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eThese are ACL's catalog references for the standard versions. If you've chosen an undersize set, don't use the standard wall figure as its thickness. You'll need your builder to check the selected shells with your components before final assembly.\u003c\/p\u003e\n\u003ch3\u003eWhat's included and what to check\u003c\/h3\u003e\n\u003cp\u003eYou get four pairs in the selected set: eight shells for four rods. You'll need to order main bearings, thrust washers and any replacement fasteners separately. Keep the rods and caps correctly matched and follow the engine and fastener manufacturer's assembly instructions.\u003c\/p\u003e\n\u003cp\u003eFor a swapped engine, order around the rotating assembly that's in the car. B20A DOHC is listed here; B20A SOHC and B20B\/B20Z use different catalog entries. If you've changed the engine or rods, identify those parts before ordering. The model badge won't tell you what's inside a swapped engine.\u003c\/p\u003e\n\u003c\/li\u003e\n\n \n\u003cli id=\"VehicleFitment\"\u003e\n \u003cp\u003eACL Race guide lists F20A, F22A, F22B; B20A, B21A, B21A1 DOHC only. Do not extend to B20A SOHC, B20B\/B20Z, F20C\/F22C or H22 from similar names or dimensions; those use other catalog entries. Verify engine and rotating assembly in swapped or modified cars.\u003c\/p\u003e \n\u003c\/li\u003e\n\n\n\n\n\u003cli id=\"TechnicalData\"\u003e\n\u003cp\u003eACL standard references: journal 47.980-48.000 mm; housing bore 51.004-51.024 mm; width 19.40 mm. H standard maximum wall 1.496 mm; HX standard maximum wall 1.483 mm. Undersize versions have different wall thickness. HX provides nominal .001 inch extra clearance on standard journals.\u003c\/p\u003e\n\u003c\/li\u003e\n\n\n\n \n\u003cli id=\"Included\"\u003e\n\u003cp\u003eFour pairs \/ eight connecting-rod bearing shells in the selected size. Main bearings, thrust washers and fasteners are separate.\u003c\/p\u003e\n\u003c\/li\u003e\n\n\n\n\n\n\n\n\n\n\n\n\u003cli id=\"InstallGuide\"\u003e\n\u003cp\u003eConfirm bearing availability before crank grinding. Inspect journals and rod housings, measure assembled clearance with selected components, and keep rods\/caps matched. Follow applicable engine and fastener assembly instructions.\u003c\/p\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n","brand":"ACL","offers":[{"title":"H 0.025 mm Undersize","offer_id":67677295869986,"sku":"4B1936H-.025","price":80.0,"currency_code":"USD","in_stock":false},{"title":"H Standard","offer_id":67677295902754,"sku":"4B1936H-STD","price":80.0,"currency_code":"USD","in_stock":false},{"title":"H 0.25 mm Undersize","offer_id":67677295935522,"sku":"4B1936H-.25","price":80.0,"currency_code":"USD","in_stock":false},{"title":"HX Standard +0.001 in Clearance","offer_id":67677295968290,"sku":"4B1936HX-STD","price":80.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2218\/5701\/files\/40122eef7c72ad8aedbf813a6911e74f_98a0.png?v=1790994586","url":"https:\/\/www.hybrid-racing.com\/products\/acl-race-4b1936h-hx-rod-bearings","provider":"Hybrid Racing","version":"1.0","type":"link"}