1.3" x 3.57" small collet intake valves, standard on Austin America, A-H Sprite, MG Midget and later A-Plus 1275cc Mini.
As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused, or wo...
Thermal transmitter fitted in the cylinder head from 1970 on until its demise on the 1990 Coopers this part was the same as GTR143. One number was original fitment and the other supplied as the spare part by Unipart.
Fits 998 1275 and cooper...
Alloy 8 Port Head with valves/springs /top caps built up to take .500 thou cam lift with approximately 20.5cc combustion chamber.---Minispares have managed to get 148bhp and 120ft lbs of torque.
This is not a straight bolt on part so see [...
Circip, this tiny hairpin clips over the early valve spring collets 2A11EVO. Although Leyland said they were not required any longer on a bulletin around 1970 most people regard them as an extra safety part as the collets always looked a...
Heater valve studs fitted to the cylinder head. 1/4"unf 1.1250" long.
Great looking and fits nearly all A-Series models! Bolting on an aluminium valve cover is the age-old way to dress up the engine compartment on any car! This finned aluminium valve cover utilizes the classic flat-top "Westlake" design. Painted alumi...
Original Vented oil filler cap that should be change every 12 thousand miles.
The original flat cap type without breather filter on early minis has now been deleted by Rover and replaced by this filter type.
If you want performance then you know you have to get as much air into the cylinder as possible. The bigger the valves the more this is possible. The standard 1275 mini and Sprite motor has only 1.3" intake valves, the standard Cooper "S" has 1.41" i...
Locating rings originally made for 12G295 heads with twin carbs to line up the inlet manifold to the inlet ports on the cylinder head it found its way on most twin carb factory produced cars. There is a recess in the inlet port on the he...
This is the longer type cylinder head adaptor tube which allows fitment of the by pass hose without removing the head. The shortened hose GZA2083 slides up the tube and then back down on the water pump tube. Frequently rusted on old head...
Standard alloy thermostat housing. If you want the larger bore type as used on the Cooper with a sandwich plate see PEQ10019 housing GRH1140.
Requires thermostat gasket GTG101MS or GUG705558G...
By pass hose plug. Frequently rusted on old heads and not even there on newer heads. These are 5/8" x 16tpi "whitworth fine" thread.
Very useful for head changes where by pass hose is not required.
That tell tale puff of blue smoke when you first start is an indicator of worn guides or seals. Valve guides should be replaced with every valve job.
Sold individually, these are the original quality Cooper S guides for use in any head espec...
Rocker covers should be held down by a nut with a washer to cover the seal and then this spacer. Available in chrome as a set SAC71L.
Original type steel 'S' competition top caps for dual springs.
If you are upgrading from single springs or just want to replace those old worn top caps, these better grade material are the best answer. Eight required per head.
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