Dedicated to the preservation, restoration, and enjoyment of all Rootes Group Vehicles
by Paul Dierschow & Tom Ehrhart Originally Printed 6/87 Shown below is a wiring diagram for a Mk I Tiger with the tachometer circuit highlighted. Although the harnesses are different for Tigers and Alpines, the principle of that circuit is exactly the same. This is also true of most other British cars with electric tachometers (more…)
by Chris Barker originally reprinted with permission from THE ALPINE HORN, United Kingdom in 8/85 If things have worked out as Paul Norton and I intended this article should accompany one by him on the intimate details on electronic revcounters. He will tell you all about resistors and thermistors. I am going to show you (more…)
by T.T. Cantwin Surveys have been made at various UNITEDS to determine the accuracy of electric tachs used in Alpines and Tigers. Tiger Tom uses a tach calibrator which is capable of calibrating tachs for Alpines and Tigers with single and dual point distributors. One survey produced the following results. Tachs were checked using single (more…)
The venerable Joseph Lucas Ltd. has done it to us again. The infamous 4TR regulator used on the Series V Alpine has been changed from a three (3) terminal unit (Figure 1) to a newer four (4) terminal unit (Figure 2). Both units are electrically the same as far as use in the Series V (more…)
Author Unknown Originally printed 1/84 The battery should not only be disconnected for winter storage, but also removed entirely from the luggage compartment. We know of at least one damaged car (Note: maintenance free batteries are riot without fumes). The several minutes spent removing the battery may save headaches, frustration and dollars later. Your battery (more…)
By John Logan First published in Rootes Review, 2007 Use a distributor with both vacuum and centrifugal advance, and replace the mechanical points with an electronic ignition. Electronic systems increase dwell time, the time available to charge the coil between firings, far beyond the old single or dual mechanical points. The “Hall” effect pickups used (more…)
Voltage = Resistance x Amperage
Bad wires, bad connections or corrosion = more resistance.
More resistance = less amperage, less voltage or both = less performance
by Larry Paulick in the RootesReview, Vol 28 No. 5, May 2003 My MKI speedometer was jumping at speed so I decided to clean and lubricate it. The following is what I learned from first disassembling and cleaning an Alpine speedo and then the Tiger unit. They are essentially the same, and the procedures are (more…)
by Ed Esslinger in the February 1997 Rootes Review That’s the statement that caught my eye as I was looking through my latest Hemmings Motor News. Among the claims were fast starts every time, unaffected by dirt, oil, or moisture, improved fuel mileage, elimination of minor tune- ups, higher voltage from your existing coil, improved (more…)
by Ed Esslinger, in the May 1997 RootesReview If you are changing your Series IV Alpine to negative ground to use an alternator, ignitor, radio or other polarity sensitive device…Remove your tach first. While it’s well known how to change to negative ground, it’s easy to overlook polarity sensitive devices. Before re-installing the tach, the (more…)