The Plus 8

TECHNICAL

 
 
 
 
 
 
 
 
 
 
 

"Old fashioned it may be, but the Plus 8 must rank as one of the
world's great cars. Elegant yet electrifying, it marries such disparate
elements like no other car. Peter Morgan has been careful to preserve that
and we think he is right. When the world is full of standardized shoe boxes,
 it's cars like the Plus 8 we will miss the most."
                                                                        Motor  Magazine

POWER OF A PLUS 8

History
The 215 Alternative  (HotRod  03/'85)
Performance Data
Power of a Morgan Plus 8: Facts & Fiction
Made for  the USA (1971-2000)
BUICK-OLDSMOBILE-EARLY ROVER COMPARISON

INDEX

COOLING & EXHAUST
EFI GENERAL
EFI SPECIFIC
ENGINE
GENERAL
GEARBOX
IGNITION
MISCELLANEOUS

COOLING AND EXHAUST

Aluminum Radiator
Catalyst Removal Warning
Coolant Hoses
Coolant Temperature Sensor
Cooling Your Morgan Generally
Coolant
Cooling a Plus 8(from the EXPERTS PANEL)
Exhaust Systems
Exhaust Manifold Bolts (Removing the)
Ported Heads (Before & after)
Rad Fan (Installing a)
Rad Fan Bypass Switch
Twin Exhaust System (from the EXPERTS PANEL)
Upgraded Exhaust System
A Rover V8 Defect that Spikes Coolant Temperatures
Water Pump Comparisons (Pre-1987 Plus 8s)
Water Pump Problem

EFI SPECIFIC

Introduction to EFI(a Basic Guide)
Introduction to Rover Fuel Injection
Adjustable Rising Rate Fuel Pressure Regulator
Air Filter (Note on High Flow for EFIs)
Air Duct Replacement
Airflow Meter (Flapper) (Setting it up)
Airflow Meter (Flapper) (Adjusting I)
Airflow Meter (Flapper) (Adjusting II)
Alternate Solutions to Repair Your EFI
Chip (Installing a New)
Chip (Performance)
ECU Problems and Diagnosis
 ECU (What to Do With a Wet One)
Fuel Pressure Regulator
3.5 Articles on the 1980-81 Triumph TR8 EFI System
3.5 Injection System (Checking Procedure)
3.5 Tuning with an Exhaust Gas Analyzer
3.5 Map of the System
3.5 Special Note For 1988 or 1989 Plus 8 Owners
3.5 Idle Air Bypass Valve
Fuel Filter
Holley Pro-Injection
3.9/4.6 Injection (History, Components and Overview)
3.9/4.6 Injection System (Checking Procedure for the)
3.9  ECU Fault Codes
3.9/4.6 14CUX
3.9/4.6 Setting the Idle Speed
3.9/4.6 Tune Resistors on a 14CUX
3.9/4.6 Morgan Issue
3.9/4.6 Wiring Diagram (1990-2000)
3.9/4.6 Hotwire (1990-2000) Overview
The 3.9 & the 4.0
4.0/4.6 OBD II
4.0 Spark Plugs
4.0/4.6 US Plus 8 Anolomy
4.0/4.6 Problems and Fixes

THE GEMS MANUAL
by David Poole

Morgan GEMS Issue
Keeping Your EFI on the Road in Coming Years
O2/Lambda Sensor(Checking yours)
Rovacom
TestBook
Twin Plenum (Siamese style)
US Map of the Early Plus 8 Injection System (US Petrol Models Only)

ENGINE

Air Filter
Air Filter (Installing a GEMS Air Filter)
Alternator (Rebuilding the)
Alternator (Installing a Bosch alternator)
Alternator(Installing a GM alternator)
Basics I Bores, Strokes & Displacement
Basics II Bores, Strokes & Displacement
Block Number I - Identifying Your Engine
Block Numbers (All Buick 215)
Block Numbers II (All Rover/LR)
Buick 215 and Olds Engine Block IdentificationBlueprinting the Engine
A Performance Camshaft
A Tired Camshaft and Lifters
Carburettor Recommendations (from the EXPERTS PANEL)
Carburettor Conversion (Stromberg's to SUs)
Catalyst Removal Warning
Cleaning an Aluminum Engine
Cleaning a Plus 8 Engine and its Components
4.0/3.9 Differences and Improvements
 Fuel Filter
Fuel Tank(1983 Plus 8 Carb)
Fuel Tank (1984 Plus 8 EFI)
Heads (Plus 8)
Head Gasket Issue (that spikes coolant temperatures)
LPG or Propane Conversion(from the EXPERTS PANEL)
Oil and a Plus 8
Oil Filter Changing
Oil Filter Changing II
Oil Pressure Isolater Switch
Oil Pressure Sensor
Oil Pump Base (repair)
Oil Pressure
Oil Pump Priming
Oil and ZDDP
Other Power Possibilities
Engine Paint Codes
Propane to Petrol Reconversion
Removing the Engine (and Gearbox from a Plus 8)
Serial Numbers (where they are)
Spark Plug Warnings
Starter(Checking Your)
Stroking the Engine
Stroking the Engine to Greater Capacities
Timing Chain
Timing Chain Problem
Timing Covers
Torque & Tuning Data Settings
Tuning SU CarbsWeber 500 Carb
Valve Seals(Replacing)
Valve Springs (Replacing)
Water Pump Comparisons (Pre-1987 Plus 8s)
Weber/Carter/Edelbrock Carb Manual
Weber Part Numbers and Diagrams
ZDDP

GEARBOX

Clutch Part Numbers (Girling)
CLUTCH SLAVE CYLINDERS (Special Note)
Diagram of a Rover 5 Speed Gearbox
Diagram of the BTR Axle
LT77 5 Speed Gearbox Manual
Repairing the LT77 Gearbox (1977-1996)
R380 5 Speed Gearbox Manual
MOSS BOXES(Supplier of ALL parts and all synchro conversion)
Replacing the Rear Gearbox Seal
Replacing the Rear Pinion Seal
Removing the Gearbox (and Engine from a Plus 8)
Rover 4 Speed(from the EXPERTS PANEL)
Salisbury Axle Diagram
Smith's Speedo Repair
Transmission Conversions

IGNITION
Alternator (Rebuilding the)
Distributor and Coil (Upgrading the)
Distributors  (more alternatives)
Distributor (Fitting a Mallory to an early Plus 8)
Changing the Plus 8 distributer
Fuel Pump Watchpoint (Jag=Bosch)
Ignition Amplifier (A heating problem)
Ignition Leads
Ignition Leads II
Ignition Timing
Leads and Plugs
Misfires on the Pre-Distributorless System
Mallory Distributor (for an early +8)
MSD (Fitting one)
Spark Plug Warnings
Starter(Checking Your)

MISCELLANEOUS

Lucas Girling Part Numbers for early Plus 8s
A Rover V8 Book List
Servos(Notes on the early Plus8's))
Upgrading the Steering on an Earlier Morgan Plus 8 (from the EXPERTS PANEL)
Wire Wheels and Plus 8s (the myth)(from the EXPERTS PANEL)
Wire Wheels and Plus 8s (2)(from the EXPERTS PANEL)
Wiring Diagrams

GENERAL
Rover Engine General Site
VIN, Engine Block and Production Data
Block Numbers (All Rover/LR)
The Rene Winters Site


The Aero 8

PICTURES

The New Plus 8? (THE GUESS AT THE AERO 8 FROM MAY OF 1999)
February29, 2000 THE GENEVA SHOW:  (IMAGES OF THE NEW MORGAN AERO 8)
A Pictorial Comparison of the Aero 8 and Other Models
The AERO 8 in a PLUS 8 Body
Images of Libra's Aero at Silverstone  (September 2001)

ARTICLES & TECH

A Wholly Aero Site
Magazine Articles
Super-Form Aluminum
Aero Patents and Designs  (Use "CHARLES PETER HENRY MORGAN" as search term in the COMPANY NAME SEARCH  window)

It is understood that the information contained herein is offered
without any undertaking whatsoever and no warranty is
suggested or may be implied on the part  GoMoG or the authors.
 
 

BACK