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Waterpump
Posted: Wed May 22, 2019 1:34 pm
by Martlin
Will a 1098 waterpump fit a 1275 Ital engine,or will I have to purchase an Ital one ?
Many thanks,
Martin.
Re: Waterpump
Posted: Wed May 22, 2019 6:14 pm
by philthehill
The standard 'A' Series water pump with by-pass stub will fit the 1275cc Ital engine without any problem
This is the one I use which has the large impellor so circulates more coolant especially to the rear of the head:-
http://www.minispares.com/product/Class ... o%20search
Re: Waterpump
Posted: Wed May 22, 2019 7:56 pm
by Martlin
Cheers Phil,Good news!
Re: Waterpump
Posted: Thu May 23, 2019 9:05 am
by IslipMinor
Shouldn't the 1275 always have the larger impellor? It will not fit the 'small' blocks without some fettling, but will fitting a small impellor pump into the larger engine provide enough cooling capacity?
Re: Waterpump
Posted: Thu May 23, 2019 10:12 am
by Martlin
Yes I think the Mini with larger impeller is the best option!
Re: Waterpump
Posted: Thu May 23, 2019 11:59 am
by philthehill
The 1275cc water pump was and still is fitted with a variety of impellors and what is fitted depends largely upon the manufacturer/supplier. They range from the small impellor to large impellor and from pressed steel impellor to cast impellor.
The preferred water pump way back was the Cooper S which had the large impellor but required reliving of the water jacket to the rear of the impellor.
A quality control item that should be inspected and can be adjusted if you have access to a press is the clearance between impellor tips and the pump body. I find that the clearance can be excessive but the impellor can be pressed further onto the [ump spindle to obtain the correct clearance. Too much clearance reduces pump efficiency.
If you use the pump in the link you will not go wrong.
See the link below for more details on water pumps:-
http://www.somerfordmini.co.uk/eshop/in ... page&id=96
Phil