BMW X5 V8 engine repairs and maintenance

BMW X5 SUV or sports utility vehicle, is probably one of the most popular SUV’s in South Africa at the moment and with a long following will probably hold the upper hand for many more years to come. Their popularity is due to a quality engine and gearbox configuration and body style that lends itself to German engineering.

The V8 range of X5’s has always captured the imaginations of the die hard male chauvinist that loves the sound of a V8 engine. These engines, although known for their gas guzzling inequalities are undoubtedly one of the best mass produced engines ever engineered by BMW.

The all aluminium head, block and sump engine has not changed all that much over the years through its model range. The 4.4 litre M62 is to-date the most popular sized engine for the E53 and was also a hit in the BMW 540i E34 and E39 sedan cars with the 4.4 litre engine which was first released in 1997.

The M60 engines were first manufactured as a 3.5 litre and thereafter as a 4.0 litre engine which comprised of a pre VANOS double overhead camshaft cylinder head, with four valves per cylinder for each of its cylinder banks. The earlier model M60 engines were consistent with a double row timing chain which was reduced to a single row chain for the M62 double VANOS engine thereby reducing friction but compromising reliability.

The primary cam chain, its guide rails and tensioner of the M62 engine are one of the engines predominantly ‘weak points’ that must be periodically maintained, serviced and repaired. It is the guide rails, constructed from alloy substructures, lined with carbon plastic that become brittle and fragile, mainly caused by overheating, which disintegrate, thereby leading to catastrophic engine failure.

In 2007, the E70 was born which was fitted with a newly designed N62 engine which was designed with a variable valve timing system and two separate cam chains with independent chain tensioners for each cylinder bank. The intake cams are opened and closed separately by a servo to improve fuel consumption and gain power through the rev range.

Probably the main reason that leads to these large bore V8 engines overheating is due to one of three important factors. Firstly viscous fan coupling failure, secondly, thermostat failure and last but not least deterioration of rubber water hoses. These factors are invaluable when reliability and longegivity are concerned. We recommend changing the above three components at the 150000 km mark for prolonged engine life and your safety.

CLICK HERE for all your BMW V8 engine reconditioning and periodic maintenance and repairs by V8 Engines.