Mileage (or kilometers) alone is not a reason to call for engine rebuilding.
If you are looking for better fuel efficiency, then you might want to start with a proper engine tuning (PCV/grommet, valve clearances, timing service including oil seals and gaskets, NGK Iridium spark plugs). Your oxygen sensors are probably shot by now. However, don't just start changing parts hoping to get the fuel efficiency up ($$$).
Do you have signs such as: piston slap (however, even new lower precision 3.5L engines in Lexuses do that), low oil pressure, oil consumption, loss of compression, uneven compression between cylinders?
A modern 3.5L class engine costs about $700 USD to make. However, there is no way a retail buyer can get one for that price. It's more like $4000 USD. A decent rebuild (such as Mahle Clevite rings and TriMetal bearings) would usually be around 50% of that plus install/removal ($700 USD).
Have you done an emissions test (or is it required in Canada)? If you're at the upper range of the permitted range, then this might be an option after a good tune up. The excellent Bosch planar type sensor that resists contamination well is about $60 USD (with a splice kit for reusing your old connector, $20-30 more for OEM connector type).
http://www.boschautoparts.com/Produc...nsors/PlanarO2
Chevron Techron:
Helps Restore
1. – Fuel efficiency
2. – Operation of broken fuel gauge sensors
3. – Lost power and drivability
Clean
1. – Sulfur corrosion from fuel gauge sensors
2. – Combustion chambers, intake valves, ports, and fuel injectors
http://www.chevron.com/products/ourf...tives/tcp.aspx
Quote:
Originally Posted by firetridagger
Hello, my 94 v6 Camry has 320000km on it and it is still running fine. I was wondering if I should have the engine rebuilt? Since i dont know much about engines and stuff, if i was to pay someone to do this how much would it cost? Also, after the rebuild would the engine give me better gas mileage?
thx
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