£29.40 exc vat
£35.28 inc vat
In stock
200lb Dual springs for use up to 8000 rpm and 515 thou lift.
The standard fitted length of springs is 1.375". Spacer shims are available to increase valve seat poundage and overall spring rate. If the spring or valve seats in the head have already been machined, it will be necessary to re-shim to the correct fitted length. Developed by Minispares technical department and used in all our own performance road cylinder heads.The bottom collars for the inner springs are No Longer Required when using our C-AEA526 and C-AEA527 range of silicone wire springs as they are a slight interferance fit and friction damped.
£29.40 exc vat
£35.28 inc vat
In stockRecommended usage 1 x C-AEA526 to fit one mini.
For specialised race use only, these springs are 267lb@ 1/2"lift fitted.
(use C-AEA526 for race and fast road cams)
Modern high lift, short duration camshafts have posed quite a few problems for the general public in re...
35.7 x 29.5mm race valves in plasma-nitrided EN214N s/steel with manganese bronze valve guides. Nominal 21.4cc with by pass and heater take off holes open.
This specification of cylinder head, based on used core castings, is modified to curr...
35.7 x 29.5mm race valves in plasma-nitrided EN214N s/steel with manganese bronze valve guides, Nominal 21.4cc with by pass hose and heater take off holes open. This specification of cylinder head, based on used core castings, is modified to current...
35.7 x 31mm race valves in plasma-nitrided EN214N s/steel with manganese bronze valve guides. Nominal 21.4cc with by pass and heater take off holes open.
This specification of cylinder head, based on used core castings, is modified to curre...
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]...
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 [...
35.7 x 29.5mm race quality valves in plasma-nitrided EN214N s/steel with manganese bronze valve guides. Nominal 21.4cc with No by pass or heater take off holes open. This specification of cylinder head, based on MPI castings, is modified to current ...
Mini Spares large valve alloy race ported and flowed head with race quality valves with special beryllium valve seats and special colisbro guides similar to those used on 8 port.
Casting shape and profile is based on the 12G1805 "S" 940 cast...
Hi spec all new alloy 5 port gas flowed head. Outright sale to save you the risk of losing £240 on exchange schemes where old heads are traded in and where faults are found, especially by some companies.
Speak to York branch for all modifica...
CNC Machined and developed as per Mighty Mini SUPER RACE series head but closer to MSE4 for road/rally cars,a briliant head using new machining technology
-outright sale using brand new MPI head casting and valves etc.35.7x29.5m...
Similar to C-AHT463 with 35.7mm inlets but larger 31mm exhaust valves as per Cooper S original valve sizes. Using a brand new MPI casting and modified for earlier cars pre 1996 only . 22cc combustion chamber
Some companies call ...
35.7 x 29.5mm valves in plasma-nitrided EN214N s/steel with manganese bronze valve guides. Nominal 21.4cc with by pass and heater take off holes open. This specification of cylinder head, based on brand new twin point injection castings (modified to...
Alloy 8 Port Head with 37.mm inlet valves with springs/top caps built up to take .500 thou cam lift with approximately 21cc combustion chamber.
The valve springs used are C-AEA526 with a fitted length of 1.350"
for the ...
Very Hi spec all new alloy 5 port super gas flowing head. Outright sale to save you the risk of losing £240 on exchange schemes where old heads are traded in and where faults can be found, especially by some companies.
The C-AHT347...
Very Hi spec all new alloy 5 port super gas flowing head. Outright sale to save you the risk of loosing £240 on exchange schemes where old heads are traded in and where faults can be found, especially by some companies.
C...
New competition valve cotter for early heads with the large single groove valve, these are precision CNC machined from 4340 and heat treated to a better spec than EN24T and claimed to be stronger in fatigue life.
These locate better in the v...
New competition valve cotter, these are precision CNC machined from 4340 and heat treated to a better spec than EN24T and claimed to be stronger in fatigue life.
These locate better in the valves and easier to control spring heights.
30.5mm(1.2") longer exhaust valve for the 2012 on 8 port head only
for use with special guides these are plasma heat treated to eradicate premature wear from unleaded petrol--For earlier heads see C-AHT376/7 valves.
The valve size h...
Set of strong lightweight titanium top caps to suit our valve springs C-AEA526/527 hard for single collet competition valves. Sold as a set of 8.
37mm(1.457") longer inlet valve for the 2012 on 8 port head only
for use with special guides these are plasma heat treated to eradicate premature wear from unleaded petrol
3.933" 99.898mm long
Genuine Mini Spares valve stem oil seal manufactured with original Dupont Viton, as fitted to the twin points engines, are the best material and seal you can use and although expensive are the best to date in stopping the engine smoking.
Man...
EXHAUST VALVE 1.15 TURBO
.3135 thou (7.96mm) thick, uses CAM6573 collets only.
Sold individually.
To help rocker pad to valve stem alignment and reduce friction, the standard springs can be replaced with solid spacers and correctb shim set. The spacers and shim kit are sold as C-AEG392.
Spacers for under the rocker pedestals are used mainly by engine tuners to allow tappet adjustment to be made where cylinder head mods have been carried out. 1.3mm/0.0512" thick, this can be used to hold locating screw on rocker post assembly but the...
Early Large cotter groove exhaust valve. Most small bore engines seem particularly prone to burning valves, it is highly recommended to replace the exhaust valves when you do a valve job! This 1.0" valve fits most early 948cc, 998cc and 1098cc engine...
We stock a limited range of Paul Ivey developed Rimflow valves for the A-Series.
30.9mm (1.217") diameter exhauste valve for 12G940 large bore casting is oversized to the stock version. Not only can you pick-up performance from...
30.93mm(1.218") exhaust valve for 8 port pre 2012 specification only
this valve is longer than other A series varieties and plasma heat treated to eradicate wear from unleaded petrol.98.35mm total length. 3.879 "
The valves for the ...
1.402" (35.6mm) dia x 3.57" long intake valve.
Our race valves are produced in EN214N steel and are stellite tipped and use the latest triple collet groove and current valve head shapes, plasma heat treated for eradicating unleaded petrol we...
1.311" (33.3mm) dia x 3.57 long intake valve.
Our race valves are produced in EN214N steel and rquire Manganese/Silicon bronze alloy valve guides. use the later narrow, single collet groove and current valve head shapes.
As ...
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