Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSACURA20043.5RLREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALMECHANICAL3.5L V6 ENGINEENGINE SPECIFICATIONSCYLINDER HEAD SPECIFICATIONS
2004 Acura 3.5RL
Cylinder Head Specifications
2004 Acura 3.5RLSECTION Cylinder Head Specifications
CYLINDER HEAD
| Application | Specification | ||||||
|---|---|---|---|---|---|---|---|
| Cylinder Head Height | 3.935-3.939" (99.95-100.05 mm) | ||||||
| Maximum Warpage (1) | 0.002" (0.05 mm) | ||||||
| Valve Seats | |||||||
| Intake & Exhaust | |||||||
| Seat Angle | 45Β° | ||||||
| Seat Width | |||||||
| Intake | |||||||
| Standard | 0.031-0.039" (0.80-1.00 mm) | ||||||
| Service Limit | 0.060" (1.50 mm) | ||||||
| Exhaust | |||||||
| Standard | 0.049-0.061" (1.25-1.55 mm) | ||||||
| Service Limit | 0.080" (2.00 mm) | ||||||
| Valve Guides | |||||||
| Intake & Exhaust | |||||||
| Valve Guide I.D. | |||||||
| Standard | 0.217-0.218" (5.51-5.53 mm) | ||||||
| Service Limit | 0.219" (5.55 mm) | ||||||
| Valve Guide Installed Height | 0.620-0.640" (15.75-16.25 mm) | ||||||
| Valve Stem-To-Guide Oil Clearance | |||||||
| Intake | |||||||
| Standard | 0.001-0.002" (0.02-0.05 mm) | ||||||
| Service Limit | 0.003" (0.08 mm) | ||||||
| Exhaust | |||||||
| Standard | 0.002-0.003" (0.05-0.08 mm) | ||||||
| Service Limit | 0.004" (0.11 mm) | ||||||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.