Range Rover Classic Inlet Manifold Fittings - V8 (Carbs)Carburettors
Two make of carburettor are fitted to Range Rover as standard equipment: the Zenith Stongberg CD00175' - used exclusively from 1970 to 1986- and the 'SU HIF' which was firred for a short period (alongside the Stromberg) from 1986 until carbs were replaced by fuel injection
The most obvious visual difference between the two types of carb is the dashpot with the 'Zenith' name cast into it, while the SU have a much taller dashpot without any markings.
Electronic Fuel injections
Electronic fuel injection (efi) replaced carbs for vogue models in October 1985, and for all V8 4-dr models from November 1986, giving a substantial power increase without significan changes to the engine, There are types of Efi systems fitted to the Range Rover:
The first system - Lucas L-Jetronic- uses an airflow meter, inside which is a higed flap that measures, by deflection, the flow of air into the engine, thus varyin the voltage signal to the ECU.
The second system- inroduced to coincide with the 'new' 3.9 litre engine in 1988 but also fitted to some 3.5 litre engines- incorporates a 'hotwire' air metering system, which contains no moving parts. Instead, it emplays two sensor wires- one of which is heated- to measure air massas it passes over the wires and into the engine. A voltage signal is then sent to the ECU proportionate to the voleatge required to maintain the temperature of the heated wire as it is cooled by the air flow.
The flap type, fitted to the first 3.5 Efi (non cat'equipped) models from 1986 is similar (through not idnitical) to the system fitted to the Rover SD1 vitesse from the same time. The hotwire type, fitted to later 3.5, 3.9, & 4.2 vehicles (with or without cat's) despite appearing quite similar, share few parts with the flap type system.
Diesel
The first Diesel- powered Range Rovers left the factory in April 1986, fitted with the Italian VM unit, followed by Land Rover's own 200 and numerous diesel conversions carried out over the years, including somr factor kits, however, the parts listed under Diesel Fuel Systems Components apply only to factory built diesel vehicles.
4 Barrrel Carbs
Finally, we offer a choice of conversion kits for V8 Range Rovers (carb or efi, all engine size):
Holley carb. Based on the legendary Holley caorburettor. The kit includes al 390cfm 4 barrel Holley carb, with vacuum secondaries and electric choke, and Offenhouser inlet manifold and choke cable kit and full instructions.
Edelbrock Performer, A 500cfm 4 barrel carb kit, complete with all necessary components, which is designed to improve performance and economy. Performer carbs also freature a bright finish which enhances the apperance of your engine. Both carbs and Ideal for on off roaders and are suitable for any engines size.
Carb Identirfication - Stromberg CD175 & SU HIF.
Both makes of carburettor have a silver tag- stamped with an identification number- which is attached to the carb by one of the dashpot retaining screws.
(note: both rh &lh carbs have the same number but with and r or l suffix as appropriate). However, if the tag is missing, the engine number will help you to identify the carburettors, providing they have not been replaced by a previous owner. (for detailed information & specifications of tengine numbers, please refer to the 'V8 ENGINE' section on page 12).
Carburettor Care & Overhaul
Fuel economy and performance can suffer with is insufficient carb maintencance, and with the tightening of the MOT regulations regearding exhaust emissions it is more important than ever that the fuel system is maintained in good working order. Incorrectly adusted or worm carb can also cause overfueling and 'bore-wash' resultiong in excess oil comsumption.
It is quite straightforward (with the help of a workshom manual) to service and overhaul yours carbs, using the service items listed ain this section.
The listings for complete carburettor are for complete carburettor are for identification purposes only. They will also show if you have the courrect type of carbs fitted, Part numbers, tag numbers and engine type of carbs fitted are quoted to help identify the original factory specification. however, these numbers relate to carburettors fitted when the vehicle wehicle was new, and not to subsquent replacements.