MGA, MGB 3 main bearing, and
MGB 5 main bearing engines all had different water pumps. MGB 5 bearing
engines also had two types of water pump, differing in their length.rubber auto oil seals Renault.
When ordering replacements, it helps to check which pump type you have, since with the passage of time the original pump may have been changed to another type.
To check the pump type:
MGA pump (GWP103) and 3 main bearing MGB pump (GWP115) have a smaller (60.3mm) impeller.rubber auto oil seals Renault.
The earlier 5 bearing pump (GWP114) fitted on enignes 18GB to 18GG had the steel fan with no spacer between fan and the pulley.
The later 5 bearing pumps (GWP130) can be identified by the presence of a spacer approx 20-25mm thick between the pulley & the original 3 bladed steel fan, or by the presence of a 7 bladed plastic fan.rubber auto oil seals Renault.
Other applications:
Obviously, this range of pumps was used on contemporary BMC B series engines. The MGA pump GWP103 also does all B series 1500 and 1622cc engines other than vans/commercials produced in the late ’60’s and ’70’s. These engines had the 5 main gearing type of pump.
5 bearing pumps: GWP114 was used in the BMC 1800 and GWP 130 was used in the Marina 1800.rubber auto oil seals Renault.
When ordering replacements, it helps to check which pump type you have, since with the passage of time the original pump may have been changed to another type.
To check the pump type:
MGA pump (GWP103) and 3 main bearing MGB pump (GWP115) have a smaller (60.3mm) impeller.rubber auto oil seals Renault.
The earlier 5 bearing pump (GWP114) fitted on enignes 18GB to 18GG had the steel fan with no spacer between fan and the pulley.
The later 5 bearing pumps (GWP130) can be identified by the presence of a spacer approx 20-25mm thick between the pulley & the original 3 bladed steel fan, or by the presence of a 7 bladed plastic fan.rubber auto oil seals Renault.
Other applications:
Obviously, this range of pumps was used on contemporary BMC B series engines. The MGA pump GWP103 also does all B series 1500 and 1622cc engines other than vans/commercials produced in the late ’60’s and ’70’s. These engines had the 5 main gearing type of pump.
5 bearing pumps: GWP114 was used in the BMC 1800 and GWP 130 was used in the Marina 1800.rubber auto oil seals Renault.
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