VQ OEM and Aftermarket Cam data
Please don't discuss here. For reference only.
There are now six different sets of OEM VQ cams to hit US soil. CVTC Off were applicable. Engine: VQ30DE Model Years: 1995-1999 (Maxima/ '96+ I30) Intake__Lift: 8.55mm Exhaust_Lift: 8.55mm Intake__Duration: 232º Exhaust_Duration: 232º Intake_Opens: 3º BTDC Intake_Closes: 49º ABDC Exhaust_Opens: 49º BBDC Exhaust_Closes: 3º ATDC Overlap: 6º ------------------------------------- Engine: VQ30DE (K) Model Years: 2000-2001 (Maxima/I30) Intake__Lift: 8.55mm Exhaust_Lift: 9.0mm Intake__Duration: 224º Exhaust_Duration: 232º Intake_Opens: 3º BTDC Intake_Closes: 41º ABDC Exhaust_Opens: 49º BBDC Exhaust_Closes: 3º ATDC Overlap: 6º ------------------------------------- Engine: VQ35DE (1) Model Years: 2001-2004 (Pathfinder) Intake__Lift: 9.0mm Exhaust_Lift: 9.0mm Intake__Duration: 230º Exhaust_Duration: 232º Intake_Opens: 3º ATDC Intake_Closes: 53º ABDC Exhaust_Opens: 46º BBDC Exhaust_Closes: 6º ATDC Overlap: 3º ------------------------------------- Engine: VQ35DE (2) Model Years: 2002-2005 (Maxima, and a slew of others) CVTC: Intake Intake__Lift: 9.5mm Exhaust_Lift: 9.5mm Intake__Duration: 238º Exhaust_Duration: 240º Intake_Opens: 6º ATDC Intake_Closes: 64º ABDC Exhaust_Opens: 52º BBDC Exhaust_Closes: 8º ATDC Overlap: 2º ------------------------------------- Engine: VQ35DE (3) Model Years: 2005 (G35 Coupe, 35th Anniversary 350Z) CVTC: Intake and Exhaust Intake__Lift: 10.5mm Exhaust_Lift: 10.5mm Intake__Duration: 248º Exhaust_Duration: 248º Intake_Opens: 2º ATDC Intake_Closes: 70º ABDC Exhaust_Opens: 70º BBDC Exhaust_Closes: 2º BTDC Overlap: -4º ------------------------------------- Engine: VQ40DE Model Years: 2005 (Pathfinder, Frontier, Xterra) CVTC: Intake Intake__Lift: 10.0mm Exhaust_Lift: 9.6mm Intake__Duration: 240º Exhaust_Duration: 244º Intake_Opens: 4º ATDC Intake_Closes: 64º ABDC Exhaust_Opens: 56º BBDC Exhaust_Closes: 6º ATDC Overlap: 2º ----------------------------------------------------- And here is the 2007 Altima cam data Engine: VQ35DE CVTC: Intake Intake__Lift: 10.0mm Exhaust_Lift: 10.0mm Intake__Duration: 240º Exhaust_Duration: 240º Intake_Opens: 10º ATDC Intake_Closes: 70º ABDC Exhaust_Opens: 50º BBDC Exhaust_Closes: 50º ATDC Overlap: 0º So it appears they've added 2º of duration to the intake cam and retarded it by 4º, advanced the exhaust cam by 2º and added 0.5mm of lift. ------------------------------------------------- 2007 VQ35HR The VQ35HR has slightly different cam timings than the VQ35DE 'Revup'. VQ35DE 'Revup' cam data Engine: VQ35DE (3) Model Years: 2005-2006 (G35mt, 35th Anniversary 350Z) CVTC: Intake and Exhaust Intake__Lift: 10.5mm Exhaust_Lift: 10.5mm Intake__Duration: 248º Exhaust_Duration: 248º Intake_Opens: 2º ATDC Intake_Closes: 70º ABDC Exhaust_Opens: 70º BBDC Exhaust_Closes: 2º BTDC Overlap: -4º ---------------- VQ35HR Engine: VQ35DE CVTC: Intake and Exhaust Intake__Lift: 10.5mm Exhaust_Lift: 10.5mm Intake__Duration: 248º Exhaust_Duration: 248º Intake_Opens: 2º BTDC Intake_Closes: 66º ABDC Exhaust_Opens: 68º BBDC Exhaust_Closes: 0º BTDC Overlap: 2º The intake cam has been advanced by 4º and the exhaust cam has been advanced by 2º. The spark plug lised in the ESM is the Denso FXE22HR11 Same smaller valves as on the 2007 Altima. Stiffer valve springs than the 'revup' engine. Strongest springs to date on any known production VQ engine. They might be the same as the Nismo springs. 113-127lbs @ 26.2mm (vs. 98-110lbs @26.2mm revup) Once piece main cap/girdle/skirt with six bolt mains. Similar or same design as the VQ40DE. Edited below. Suspicions about longer rods aren't true. The VQ35HR has the SAME 144.2mm rod length as all other VQ35s. Unless the ESM is wrong. But this block is supposed to be taller. The difference might all be in the piston height. However it does have 57mm journals vs. the old 55mm journals (without bearing). 54mm vs. 52mm Crank journals. Main crank journals increased to 64mm, up from 60mm. Main crank bearings thickened to 2.5mm up from 2.0mm. EDIT: HAL is reporting that he had a HR rod physically checked to be 152.2mm. Which coinsides with the 8mm block height increase that's been reported by various sources. edit 8-7-2009 by Nealoc187: compiled SR20DEN's 2007+ cam info into this thread and made sticky. Added Nismo Spec-1 and Spec-2 info. VQ35DE Nismo Spec-1 and Spec-2 cam info from http://www.nismo.co.jp/en/products/c...ne/vq35de.html Spec-1 1. Intake cam: Operating angle has been increased (238deg→276deg), as has cam lift (9.5mm→11.0mm) and the central angle (125deg→138deg) 2. Exhaust cam Operating angle has been increased (240deg→256deg), as has cam lift (9.5mm→10.5mm) and the central angle (112deg→120deg) 3. During VTC operation (crank angle at 50deg), the overlap at VTC off is 8deg, 58deg at VTC on Spec-2 1. Intake cam: Operating angle has been increased (238deg→284deg), as has cam lift (9.5mm→11.0mm) and the central angle (125deg→135deg) 2. Exhaust cam Operating angle has been increased (240deg→268deg), as has cam lift (9.5mm→10.5mm) and the central angle (112deg→115deg) 3. During VTC operation (crank angle at 35deg), the overlap at VTC off is 18deg, 53deg at VTC on ------------------------------------------- Key: ATDC (After Top Dead Center) ABDC (After Bottom Dead Center) BTDC (Before Top Dead Center) BBDC (Before Bottom Dead Center) |
All times are GMT -7. The time now is 08:12 PM. |
© 2024 MH Sub I, LLC dba Internet Brands