Factors affecting time:
* Rust: If the manifold is heavily rusted, bolts may break, significantly increasing the time required for removal. This often necessitates additional time for drilling out broken studs or other methods of removal.
* Mechanic Skill: Experienced mechanics will be faster. A beginner could easily take twice as long.
* Tool Availability: Having the right tools (impact wrench, socket set, penetrating oil, etc.) is crucial for efficiency.
* Accessibility: Working under a vehicle is inherently challenging. Limited space can slow down the process.
4 hours would be a best-case scenario for someone very experienced and working on a relatively clean, rust-free manifold. 8 hours is a more realistic estimate for someone with average mechanical skills and a potentially challenging situation. Plan for more time if you anticipate problems.
