Monday, December 22, 2014
Wednesday, December 3, 2014
|The Supercharged Range Rover (c) J E Robison Service|
The ex-Buick V8 that Land Rover sold in America from 1987-2004 was never known for its reliability. However, things took a sharp turn for the worse in 2002, and the last Discovery engines appear to have been doomed from the start. Here are three articles about internal problems in the V8s:
V8 engine failures - slipped liners and more - from 2009
Should you rebuild a failed Land Rover motor? I have an article about that situation here that covers the decision process
What's the latest on top hat or flanged liners? This article tells all you want to know about the flanged liner overhaul
Discovery II models also have a problem with frame rust. We first began to see this in the spring of 2014, when we saw several trucks whose rear frames rusted right through over the winter. These vehicles seemed more vulnerable to rust than the earlier models. Read this article to find out why, and what you can do about it.
Are you thinking of restoring a Land Rover? This article shows some of what's involved. This article explains the difference between repair and restoration, two very different processes.
If you drive a Range Rover Sport or LR3, read this story on differential failures
And if your supercharged Rover is losing power - read this
Programming keys for your Land Rover is here
(c) J E Robison Service
John Elder Robison is the founder of J E Robison Service, independent Land Rover specialists in Springfield, MA. John's shop has supported Land Rover owners since 1987. They are experienced at all aspects of service, repair, overhaul and restoration. Find Robison Service online at www.robisonservice.com or on the phone at 413-785-1665.
Friday, November 28, 2014
|Bentley Arnage - (c) J E Robison Service|
|A rare Rolls Royce Corniche S - (c) J E Robison Service|
I've written quite a few articles on Rolls Royce and Bentley, and I have begun gathering them together here. One day I'll probably turn them into a book. Till then . . . Feel free to comment or offer corrections.
Thoughts on buying a used Rolls Royce or Bentley - applies to Silver Cloud and newer series cars
More thoughts on Spur - Spirit - Turbo era car buying
Thoughts on restoration - applies to all cars
Evolution of the RR/B models - Silver Shadow through Arnage/Seraph - original article from the Robison Service website
Inspecting a Rolls Royce or Bentley - Applies to Corniche, Continental, Azure, Turbo R, Mulsanne, Eight, Turbo R, Silver Spur, Silver Dawn, Silver Spirit
More Things to Look For in a 1981-2000 Rolls Royce or Bentley - this is the original article from the Robison Service website
The last Crewe built Rolls Royce convertibles - applies to 2000-2002 final Series Corniche
Repairing convertible top hydraulics - Applies to 1996-2004 Rolls Royce and Bentley Corniche and Azure cars
Head gasket failures in Bentley Turbo cars - applies to Turbo R, Continental R and T, Azure, Arnage
Checking engines after head gasket failure - Applies to all cars
Checking and inspecting Rolls Royce hydraulic systems - all cars after Silver Cloud and print to Silver Seraph. Applies to all Shadow/Spur era vehicles
Case Study - brake failure in a Shadow - Silver Shadow era cars with RR363
Rear suspension gas springs - Applies to all 1981 - 1999 cars prior to Silver Seraph
Changing batteries in seat and ECUs, Applies to 1980s-1990s Silver Spirit / Silver Spur / Mulsanne /Eight / Turbo R
Changing alarm ECU batteries, Applies to 1980s-1990s Silver Spirit / Silver Spur / Mulsanne /Eight / Turbo R
Servicing Shadow and Spur series brakes - applies to 1966 - 1999 cars after Silver Cloud and prior to Silver Seraph
Alcon racing brakes for Continental and Azure - Applies to all 1990s cars but most particularly to the final series Azure, which had these brakes fitted at the factory - a unique variant
Fixing Power Steering Leaks - applies to 90s cars with the reservoir above the alternator
Questions and answers on collector car storage - Applies to all cars
Evaluating paint - Applies to all cars
John Elder Robison is the general manager of J E Robison Service Company, independent restoration and repair specialists in Springfield, Massachusetts. John is a longtime technical consultant to the RROC and other car clubs, and he’s owned and restored many fine vehicles. Find him online at www.robisonservice.com or in the real world at 413-785-1665
Wednesday, November 26, 2014
|The Bentley Azure and RR Cornice are fine cars but the tops are a weakness (c) J E Robison|
|The upper photo is a closeup of jacketing peeling from a hydraulic hose. Failure is imminent (c) J E Robison Service|
|Leaked hydraulic oil in the convertible top well (c) J E Robison Service|
|Oil seeping from the convertible top hydraulic line bundle|
|Header bar line with deterioration. These are the worst if they blow|
The new hydraulic oils are synthetic and they resist this, but the moral there is - change your top hydraulic fluid every few years, or else.
When the top is partly folded there is another thing you want to check – the cables. These new automatic tops need to fold into a tight space to be hidden under the rear deck. To do that they rely on cables sewn into the top lining. Loops of wire around those cables pull the top fabric against the bows and fold everything properly. If the cables break the top will jam in the bows, and if the bows bend as a result – you have big trouble.
|Broken stay cable on Bentley convertible top|
This article is about the automatic convertible top system used in Rolls Royce and Bentley Azure and Corniche from 1996-2005. Check out this article for thoughts on the newer Bentley GTC convertible top and its problems
And here's an article on 1997-2005 Jaguar XK8 and XKR convertible tops - they have some of the same issues but are simpler to fix
- They can leak oil or coolant onto the ground, with no internal failure
- The fire ring seal can fail, allowing combustion gases to pressurize the cooling system
|A blown head gasket. Area in the red box is the coolant passage. The half circle is the combustion seal|
|Repaired cylinder heads for a Bentley (c) J E Robison Service|
|A burnt valve as seen in the head (c) J E Robison Service|
|Burnt valve removed from the head (c) J E Robison Service|
|Illustration of a low spot in an aluminum block deck (c) J E Robison Service|
|Measuring cylinders for taper and egging, BMW V8 shown (c) J E Robison Service|
|Repairing damaged head studs with oversize inserts Bentley V8 shown (c) J E Robison Service|
Quality engine work takes time, and costs money. Jobs done correctly last, and the price is soon forgotten while poor quality never goes away.
Also see this related article: Head Gasket Failures in Rolls Royce/Bentley engines
If you're wondering what's below the heads, read this story about liner failures in Land Rover V8's and how we fix them.