HEAD UNLEADED 25cc CHAMBER SIZE FOR 1380cc
C-AHT133

£1,019.70 exc vat

£1,223.64 inc vat

Out of stockOut of stock
35.6 x 29.3mm valves in chrome stem with cast iron valve guides. This specification of cylinder head, based on used core castings, is modified in true Road sport style to maximise on-road performance for those wanting maximised drive-ability when ...

£1,019.70 exc vat

£1,223.64 inc vat

Out of stockOut of stock

Alternative products

35.7 x 29.5mm valves in plasma-nitrided EN214N s/steel with manganese bronze valve guides.Nominal 24-25cc with by pass and heater take off holes open. Supersport head-sold on an exchange basis-old core must be serviceable and no cracks--See [link]...

Kit contained products

35.6mm inlet valve in EN52 steel.As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused or worse yet confuse the parts-guy when it is time to order new valves. Be aware that if the head has b...

29.3mm exhaust valve in EN21 steel. As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused, or worse yet, confuse the parts-guy when it is time to order new valves! Be aware that if the head ...

Top cap for all A Plus valves with the triple groove collets. Metro from 1984 on and mini 1275 from 1990

Hardened unleaded valve seats for 1.15" 1275 exhaust valves.

Require a recess of 1.2495"(31.737mm) diameter, plus or minus 0.0005" (0.013mm), and 0.250"(6.35m) deep at ambient temperature of 20C.

As an engine wears, the clearance between the valve stem and guide increases; as this gets beyond tolerances the car will tend to smoke under deceleration (when you take your foot off the throttle). Good valve stem seals will allow for greater wear b...

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...

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...

Collet for the 3 groove valve. Sold per half and 2 required per valve.

These cotters go with AHU1897 top cap. On Turbo heads after engine number 102641 were fitted on the inlet only.

All early 850/997/998/1098cc heads u...

160lbs on the nose at 400" for standard Cooper S or twin spring set ups. See C-AEA526 and C-AEA527 for later developed springs. These are ok for all standard uses but are improved and uprated over all original factory fitted...

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This kit of head studs is the best available for road and lightly tuned engines. See the C-AHT280 set for highly tuned engines.

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Alloy CNC version of the cylinder head take off 12G2534. The standard item being steel can be prone to corrosion, this CNC alloy version is smart, and will not corrode like steel does

Large 35mm inlets-Suit any 1275cc-

Using a New MPI 1275cc head casting, built up with new valves and springs etc; all set up for unleaded fuel. Last of these brand new head castings which have slightly soiled paint etc through age.

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3 layer steel head gasket especially suitable for full race engines up to 73.5mm

bore where it has larger bore holes and considered the ultimate head gasket.

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Complete stud, nut and washer kit for the cylinder head ancillaries. Kit contains parts to retain the following:

Inlet/Exhaust manifold to head, studs/nuts/washers

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Minispares own stainless steel manifold stud and 6 sided hexagon nut kit.

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Minispares own stainless steel Thermostat housing stud kit for the single tier type thermostat housing.Quantity required one kit per car

Contains following; TAM1521 head gasket, inlet/exhaust manifold gasket, rocker cover, heater valve, 2 x thermostat, 3 x HS4 carb to manifold, 6 x HS2 carb to manifold, 2 x HS2 carb to aircleaner, 3 ...

Genuine version of the thermostat gasket for all A series. Black one side and red the other they are fitted black side to the head. Green to the thermostat.

We have no evidence as yet that they last longer but do look good.

See [lin...

replacements in stainless steel for the heater tap elbow on the cylinder head.

Quantity required one kit per car

Mini cork Rocker cover gasket, suitable for all Minis and A series engines except those with 11 stud heads (see part number GUG5038VC). A must have replacement item when adjusting rocker clearances. see GUGG705009EVO for sil...

Genuine Mini Spares part- 1.5 Hi Lift Roller-tip rocker assembly for 1275cc with gold anodised steel posts.

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...

Originally marketed by minispares in the mid 70s so many companies copied them because of their smart looks and ease of fitment they were improved by offsetting the arms to help tighten plus stop the arm falling out when they were straight. These T b...

Payen,stamped BK450, original standard composite reinforced gasket used on all large bore engines by Rover including Metro and MG Turbo and is an exceptionally good gasket.

Asbestos free with copper type sealing rings. Compressed volume is ...

Special extra long nuts were used on some manifolds. These nuts are about an inch long for easy reach and made of brass so they'll never corrode. Especially handy on the inner two studs on dual carb set-ups.

Sold singly and usually 2 used f...

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...

Made of thicker, more pliant material with larger ports than the original gaskets. A must for use on ported heads.

Forget all the universal shape gaskets available - this is the original correct shape made out of thick gasket paper.