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Water pumps
Posted: Mon Jun 16, 2008 9:29 pm
by youngun
Just been looking around, there seems to be a number of different water pumps about, for the 948 1098 and 803 models of engine. Are these all interchangable?
thanks,
YG
Posted: Mon Jun 16, 2008 9:41 pm
by aupickup
early ones no but later ones yes
ie 803 no
948 and 1098 yes
Posted: Mon Jun 16, 2008 9:43 pm
by bmcecosse
I think not the 803 - it's slightly different. 948 and 1098/1275 pumps are all much of a muchness - although later pumps have a thicker impeller which can foul on the block when installed - either grind a bit off the pump or carefully relieve the block. Be wary of pumps for later Minis - which don't have a lug for the alternator !
Posted: Mon Jun 16, 2008 9:46 pm
by aupickup
thats what i said
Posted: Mon Jun 16, 2008 9:49 pm
by bmcecosse
We cross posted! Your post must have come up while I was typing. At least we both agree!!
Posted: Mon Jun 16, 2008 10:11 pm
by aupickup
Posted: Mon Jun 16, 2008 10:46 pm
by Matt
And remember there are pumps with and without bypass hoses.
Posted: Mon Jun 16, 2008 10:58 pm
by bmcecosse
Good excuse to get rid of the dreadful bypass hose!
Posted: Mon Jun 16, 2008 11:43 pm
by Peetee
Bypass fitment aside, there are two main types of similar (if not identical) outward design. The difference is in the pump impeller. One stands proud of the pump casing about 6mm more than the other and is not compatible with all the 948 engines. Either are fine for the 1098 or 1275 engine.
Posted: Wed Jun 18, 2008 12:35 pm
by bmcecosse
But it is a better pump - hence the suggestion to carefully relieve the block, or take a little bit (just an edge really) off the pump.
