How do you adjust a su hs4 carburetor?
How do you adjust a su hs4 carburetor?
Turning the fitting raises and lowers the needle seat. Pick a carb, and turn the fitting 3 flats (1/2 turn), first in one direction, then back 3, then 3 in the other direction. Note where the engine runs better, idle speed should increase. Turn to the best setting.
What brand carburettor was used on the Mini ?:?
The Morris Minor and other models used carburettors made by the S.U company. Austin models up until the Mini and BMC takeover generally used Zenith carburettors.
Do SU carbs have accelerator pumps?
Since it relies on restricting air flow in order to produce enrichment during acceleration, the throttle response lacks punch. By contrast, the fixed choke design adds extra fuel under these conditions using its accelerator pump.
Who makes SU carbs?
Welcome to Burlen Ltd, home of vintage and classic vehicle fuel systems. Over the years Burlen has become renowned for its role in manufacturing, restoring and re-introducing a number of famous classic vehicle fuel systems and associated spares including SU, Amal, Zenith, Stromberg and Solex.
What size are classic Mini spark plugs?
This is an 8mm spark plug.
How do you set SU carbs?
With the engine running at working temperature, hook your finger under the pin and raise the piston about 1/32in. (1 mm). If, while the piston is raised, the engine speed increases briefly then returns to normal, the mixture is correct. If it rises and stays high, the mixture is too rich.
What kind of carburettor does a mini have?
Minis with carburettor engines were always fitted with SU (‘ S kinners U nion’) carburettors. There are however some different types of SUs used and it is sometimes neccesary to determine the type used. They are determined by a simple coding system. The first prefix (H, HD, HIF, etc.) determines the type, the following numbers the size.
Can you use a fixed jet on a HS4 carburettor?
Hence the movement of the jet alters the mixture a little bit. Waxstat jets are however only used (on Minis) with HS4 carbs. To use a fixed jet on a carburettor equiped with a waxtstat you need either an adaptor or a different choke lever.
What does HS8 stand for in carb project?
HS8 1 8/8″ = 50,80 mm (4 flange bolt pattern?) This type of carburettor has an integrated floatchamber. Hence the acronym; HIF = Horizontal Integratet Float. It features a sealed throttle spindle, and spiral returning springs on each end of the throttle spindle.
How to identify my carb project a-series?
Float chamber fixed to carburettor body by a single (horizontal) bolt. Flexible hose as feed for the jet assembly. HS8 1 8/8″ = 50,80 mm (4 flange bolt pattern?) This type of carburettor has an integrated floatchamber. Hence the acronym; HIF = Horizontal Integratet Float.
