{"product_id":"act-at78-clutch-alignment-tool-honda-acura","title":"ACT AT78 Clutch Alignment Tool for Honda\/Acura","description":"\u003cul\u003e\n\u003cli\u003eSeparate ACT AT78 replacement alignment tool \u003c\/li\u003e\n\u003cli\u003e24-spline hub section with 1 1\/32-inch spline diameter \u003c\/li\u003e\n\u003cli\u003e0.830-inch pilot diameter; differs from AT61's 0.787-inch pilot \u003c\/li\u003e\n\u003cli\u003eSelected Honda and Acura manual clutch applications \u003c\/li\u003e\n\u003cli\u003eCheck complete kit contents before buying a separate tool \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\u003eACT AT78 Clutch Alignment Tool\u003c\/h3\u003e\n\u003cp\u003eKeep the ACT clutch parts you've already got and replace the missing alignment tool with AT78. We'd buy it separately when the tool has disappeared between jobs, when yours is damaged, or when you're ordering a matching disc and pressure plate individually. Check your complete kit first: ACT includes AT78 in the AR1-HDSS for the 2002-2006 RSX, so you may already have one.\u003c\/p\u003e\n\u003ch3\u003eChoose it by the pilot as well as the splines\u003c\/h3\u003e\n\u003cp\u003eWe'd start with your ACT clutch number and the pilot diameter. AT78 has 24 splines on a 1 1\/32-inch hub section, with a 0.830-inch pilot at the tip. That smooth end seats behind the disc; the splines locate its hub while you secure the pressure plate. You'll pull the tool out once the disc is clamped. Getting it through the disc is only the first part of the fit check.\u003c\/p\u003e\n\u003cp\u003eAT61 is the easy one to confuse with it. You've still got 24 splines and the same hub diameter, but the pilot measures 0.787 inch. ACT calls for AT61 with the HC12 kits for the Civic Type R and Integra Type S. For an Integra A-Spec 1.5T with an HC10 kit, choose AT78. We'd keep the kit number with the car's details rather than ordering an unspecified Integra tool. The molded 78 beside the pull ring also helps when you've got several loose tools to sort.\u003c\/p\u003e\n\u003ch3\u003eBlack plastic, used during assembly\u003c\/h3\u003e\n\u003cp\u003eYou're buying a black plastic tool for the assembly stage. It comes out before you refit the gearbox, so engine torque doesn't pass through it once the car's running. Before reusing an old AT78, we'd look over the tip and splines. Damage there is a reason to get another tool, even if you've still got all the clutch parts. Keep the good one with your clutch paperwork afterward, ready for the next time you service that assembly.\u003c\/p\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAT78\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer part number\u003c\/td\u003e\n\u003ctd\u003eAT78\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpline count\u003c\/td\u003e\n\u003ctd\u003e24\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpline diameter\u003c\/td\u003e\n\u003ctd\u003e1 1\/32 inch (1.03125 inches)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePilot diameter\u003c\/td\u003e\n\u003ctd\u003e0.830 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial \/ color\u003c\/td\u003e\n\u003ctd\u003ePlastic \/ black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct weight\u003c\/td\u003e\n\u003ctd\u003e0.1 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003ctd\u003eOne clutch alignment tool\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer warranty\u003c\/td\u003e\n\u003ctd\u003e12 months, subject to ACT's warranty terms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eHonda and Acura manual fitment\u003c\/h3\u003e\n\u003cp\u003eUse the engine and manual application shown here; automatic and CVT versions aren't included. Say you've fitted a K20A2 drivetrain to a Civic and you're using a matching ACT AR1 clutch with its required flywheel. We'd choose the tool from that clutch and pilot setup, rather than order from the Civic's original engine listing. Check the assembly on the car before applying a chassis-based fitment table to a swap.\u003c\/p\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eYears\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eMake \/ Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eManual application\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2002-2006\u003c\/td\u003e\n\u003ctd\u003eAcura RSX\u003c\/td\u003e\n\u003ctd\u003eBase and Type-S, 2.0L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2004-2012\u003c\/td\u003e\n\u003ctd\u003eAcura TSX\u003c\/td\u003e\n\u003ctd\u003eBase, 2.4L; A-Spec in 2012 only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2012-2014\u003c\/td\u003e\n\u003ctd\u003eAcura TSX\u003c\/td\u003e\n\u003ctd\u003eSpecial Edition, 2.4L; Premium and Tech in 2013-2014 only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2013-2015\u003c\/td\u003e\n\u003ctd\u003eAcura ILX\u003c\/td\u003e\n\u003ctd\u003eBase and Dynamic, 2.4L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2023-2026\u003c\/td\u003e\n\u003ctd\u003eAcura Integra\u003c\/td\u003e\n\u003ctd\u003eA-Spec, 1.5L turbo; Elite A-Spec in 2023-2025 only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2002-2011\u003c\/td\u003e\n\u003ctd\u003eHonda Civic\u003c\/td\u003e\n\u003ctd\u003eSi, 2.0L; SiR in 2002-2004 and MUGEN Si in 2008 only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2012-2015\u003c\/td\u003e\n\u003ctd\u003eHonda Civic\u003c\/td\u003e\n\u003ctd\u003eSi, 2.4L; Si HFP in 2012 only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017-2020, 2022-2026\u003c\/td\u003e\n\u003ctd\u003eHonda Civic\u003c\/td\u003e\n\u003ctd\u003eSi, 1.5L turbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017, 2020-2024\u003c\/td\u003e\n\u003ctd\u003eHonda Civic\u003c\/td\u003e\n\u003ctd\u003eSport Touring, 1.5L turbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2003-2012\u003c\/td\u003e\n\u003ctd\u003eHonda Accord\u003c\/td\u003e\n\u003ctd\u003eEX and LX, 2.4L; LX-S in 2008-2012 only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2018-2020\u003c\/td\u003e\n\u003ctd\u003eHonda Accord\u003c\/td\u003e\n\u003ctd\u003eSport, 1.5L turbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eSort out the rest of the assembly too\u003c\/h3\u003e\n\u003cp\u003eOn a Base RSX with an ACT AR1 clutch, you'll need an RSX Type-S flywheel or ACT 600295\/600125, even with the five-speed. Don't let a matching tool number make that flywheel decision for you. AT78 is right for the clutch, but it doesn't make the original Base flywheel right for the new assembly.\u003c\/p\u003e\n\u003cp\u003eKeep the supplied ACT flywheel with the specified AR2 kits for a 2009-2014 TSX or 2013-2015 ILX. The HC10 single-mass conversions require their included ACT flywheel too. If you're assembling the order from individual parts, account for those requirements before you start the job.\u003c\/p\u003e\n\u003cp\u003eFor your original B-series 1994-1997 DOHC VTEC Del Sol with an ACT AI4 clutch, order AT88. Its pilot measures 0.590 inch; its 24-spline, 1 1\/32-inch hub section matches AT78. K-swapped that Del Sol? Choose from the clutch you've fitted, rather than keeping the old B-series tool just because its splines still fit through a disc.\u003c\/p\u003e\n\u003ch3\u003eStreet and race discs: the same tool, different driving\u003c\/h3\u003e\n\u003cp\u003eACT includes AT78 with both the AR1-HDSS and AR1-HDR4, although the discs have quite different jobs. The HDSS uses a sprung organic street disc and carries a 255 lb-ft crank torque rating for the kit. The HDR4 uses a rigid four-pad ceramic race disc; its kit rating is 330 lb-ft at the crank. Those ratings belong to the clutch kits, not AT78.\u003c\/p\u003e\n\u003cp\u003eOur advice for your daily RSX is to stay with the organic street disc if it covers your engine's torque. You don't need to accept a rigid race disc's behavior just because it offers more capacity. ACT recommends the HDR4 for race use only and describes harsher engagement and more gear rattle. We'd take those compromises for a race build that needs them, rather than choosing the bigger number for a commuter. Either specified AR1 setup uses AT78.\u003c\/p\u003e\n\u003ch3\u003eFor the ACT T1RR-H04 twin-disc clutch\u003c\/h3\u003e\n\u003cp\u003eIf you're servicing an existing T1RR-H04 7.25-inch Honda K-series twin-disc assembly, ACT's dedicated instructions also list AT78. You're aligning two hubs in this job. The lower SI184010B disc, floater and upper SI184010T disc go in the kit's specified order, with the hubs kept aligned while you secure the assembly. Use the twin-disc procedure; sharing the tool number doesn't make it the same job as a single-disc installation.\u003c\/p\u003e\n\u003cp\u003eYou don't have to start over with a whole twin-disc clutch just to replace a missing tool. ACT lists the T1RR-H04 components separately, including AT78. Check that you've got that kit before making the match; a different K-series twin-disc assembly needs its own tool check.\u003c\/p\u003e\n\u003ch3\u003eRefitting the gearbox\u003c\/h3\u003e\n\u003cp\u003eCenter and clamp the disc or discs using the instructions for your clutch, then take AT78 out. Support the gearbox for the refit. If you've still got a gap at the bellhousing, leave it supported while you check where it's hanging up. We'd go back to the disc alignment, input-shaft engagement and case dowels before tightening anything. ACT's general instructions say not to use the bellhousing bolts to pull the transmission into place. You need the dowels to locate the case as well as the tool to center the discs, and you'll still need the bearings and hardware specified for your assembly.\u003c\/p\u003e\n\u003c\/li\u003e\n\n \n\u003cli id=\"VehicleFitment\"\u003e\n \u003cp\u003eSelected ACT manufacturer-listed Honda\/Acura applications only. Manual transmission and the stated engine\/clutch\/pilot arrangement are required; automatic and CVT versions are excluded. AT78 uses 24 splines, 1 1\/32-inch spline diameter and a 0.830-inch pilot. AT61 has the same spline dimensions but a 0.787-inch pilot and is not interchangeable based on spline count alone. Civic Type R and Integra Type S ACT HC12 setups require AT61. AR2 and HC10 conversion applications require the matching ACT flywheel specified with their kits. For swaps, confirm the installed assembly rather than the chassis. Additional regional trims from ACT's broad list remain withheld pending review.\u003c\/p\u003e \n\u003c\/li\u003e\n\n\n\n\n\u003cli id=\"TechnicalData\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer part number\u003c\/td\u003e\n\u003ctd\u003eAT78\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpline count\u003c\/td\u003e\n\u003ctd\u003e24\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpline diameter\u003c\/td\u003e\n\u003ctd\u003e1 1\/32 inch (1.03125 inches)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePilot diameter\u003c\/td\u003e\n\u003ctd\u003e0.830 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct weight\u003c\/td\u003e\n\u003ctd\u003e0.1 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer warranty\u003c\/td\u003e\n\u003ctd\u003e12 months, subject to ACT terms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\n\n\n \n\u003cli id=\"Included\"\u003e\n\u003cp\u003eOne ACT AT78 clutch alignment tool. Clutch disc, pressure plate, flywheel, pilot bearing and release bearing are not included.\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\u003eFollow the clutch manufacturer's instructions. Check disc fit on the input shaft and correct disc orientation before installing the pressure plate. Seat AT78 through the disc into the pilot, center the disc and tighten the pressure plate progressively in the specified sequence. Remove the alignment tool before fitting the transmission. Support the transmission and recheck alignment if it will not seat; do not draw it into place with the bellhousing bolts.\u003c\/p\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n","brand":"ACT Clutch","offers":[{"title":"Default Title","offer_id":67636010582050,"sku":"ACT-AT78","price":4.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2218\/5701\/files\/ACT-AT78_k4x7.jpg?v=1790906012","url":"https:\/\/www.hybrid-racing.com\/products\/act-at78-clutch-alignment-tool-honda-acura","provider":"Hybrid Racing","version":"1.0","type":"link"}