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.
2008 Nissan-Datsun Sentra Base, Automatic CVTFACTORY OEM SERVICE PROCEDURE
Valve Guide
VALVE GUIDE
| Unit: mm (in) | ||||
|---|---|---|---|---|
| Items | Standard part | Service part | ||
| Valve guide | Outer diameter | 9.523 - 9.534 (0.3749 - 0.3754) | 9.723 - 9.734 (0.3828 - 0.3832) | |
| Inner diameter (Finished size) | 5.500 - 5.518 (0.2165 - 0.2172) | |||
| Cylinder head valve guide hole diameter | 9.475 - 9.496 (0.3730 - 0.3739) | 9.675 - 9.696 (0.3809 - 0.3817) | ||
| Interference fit of valve guide | 0.027 - 0.059 (0.0011 - 0.0023) | |||
| Items | Standard | Limit | ||
| Valve guide clearance | Intake | 0.020 - 0.053 (0.0008 - 0.0021) | 0.1 (0.004) | |
| Exhaust | 0.030 - 0.063 (0.0012 - 0.0025) | |||
| Projection length "L" | 13.35 - 13.65 (0.526 - 0.537) | |||
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.