page_title: Toyota LR engine
section_title: 1LR-GUE
hierarchical_section_title: Toyota LR engine / 1LR-GUE
caption_attribution_description: Lexus V10
context_page_description: The Toyota LR engine is a V10 piston engine built by Toyota.
context_section_description: Announced in the Lexus LFA sports car, the 1LR-GUE is a 4,805 cc (4.8 L; 293.2 cu in) DOHC 4 valves per cylinder V10 engine, made from aluminium alloy, magnesium alloy and titanium alloy and is smaller than most V8s.
  The oil and water pumps are located at the rear of the engine and the lubrication system uses a dry sump. Titanium is used for the valves and the rocker arms have a diamond-like coating. Each cylinder has an independent, electronically controlled throttle body.
  Yamaha was contracted to co-develop the 1LR-GUE. The exhaust system was co-developed with Yamaha's music division. The engineers described the sound of the engine as "the roar of an Angel".
  Maximum power output is 560 PS (552 bhp; 412 kW) at 8,700 rpm.
  Maximum torque is 480 N⋅m (354 ft⋅lb) at 6,800 rpm.
  The engine redlines at 9000 rpm and has a fuel cut-off at 9500 rpm, with 90% of its peak torque available from 3,700 rpm to 9,000 rpm. An LCD tachometer was fitted to the LFA as an analog fixture allegedly was not responsive enough to the engine's ability to change speed. The Lexus LFA broke the world record in 2012, for the fastest production engine revving to its redline in 0.6 seconds.
  It features a single circular dial with a central tachometer with an LCD needle. When engine speed exceeds 9000 rpm, the display area turns red to prime the driver for an up-shift.
  Bore × stroke: 88 mm (3.46 in) × 79.0 mm (3.11 in)
  Compression ratio: 12.0:1
  V angle: 72 degrees
  Exhaust emissions certification: Euro 5
  Applications:
  Lexus LFA
caption: The Lexus LF-A V10 engine
exif: {"Image Make": "Canon", "Image Model": "Canon PowerShot G6", "Image Orientation": "Horizontal (normal)", "Image XResolution": "180", "Image YResolution": "180", "Image ResolutionUnit": "Pixels/Inch", "Image DateTime": "2008:08:01 16:18:54", "Image YCbCrPositioning": "Centered", "Image ExifOffset": "196", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "180", "Thumbnail YResolution": "180", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "2548", "Thumbnail JPEGInterchangeFormatLength": "6334", "EXIF ExposureTime": "1/60", "EXIF FNumber": "2", "EXIF ExifVersion": "0220", "EXIF DateTimeOriginal": "2008:08:01 16:18:54", "EXIF DateTimeDigitized": "2008:08:01 16:18:54", "EXIF ComponentsConfiguration": "YCbCr", "EXIF CompressedBitsPerPixel": "3", "EXIF ShutterSpeedValue": "189/32", "EXIF ApertureValue": "2", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "2", "EXIF MeteringMode": "Pattern", "EXIF Flash": "Flash fired, auto mode, red-eye reduction mode", "EXIF FocalLength": "115/16", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "3072", "EXIF ExifImageLength": "2304", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "Interoperability RelatedImageWidth": "3072", "Interoperability RelatedImageLength": "2304", "EXIF InteroperabilityOffset": "1882", "EXIF FocalPlaneXResolution": "768000/71", "EXIF FocalPlaneYResolution": "768000/71", "EXIF FocalPlaneResolutionUnit": "2", "EXIF SensingMethod": "One-chip color area", "EXIF FileSource": "Digital Camera", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF DigitalZoomRatio": "1", "EXIF SceneCaptureType": "Standard"}