£2.64 exc vat
£3.17 inc vat
In stock
For Performance see 88G459EVO made in the USA by a Specialised Racing product company.
All the earlier heads used the 2A11 cotters, noted by the wide slot in the valve. All pre 1984 12G940 castings and Cooper S used these collets
Later 998/1098 production from 1970 on and most aftermarket valves, use this 88G459 collet/keeper with a single narrow groove Pre A Plus.
Valve stems with 3 grooves as used on most A-Plus heads late 1980s on,use CAM6975 cotters. Order the correct cotters to go with the valves you will be using.
When ordering these you get two halves to equal one cotter for one valve.
£2.64 exc vat
£3.17 inc vat
In stockRecommended usage 8 x 88G459 to fit one mini.
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...
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...
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.
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...
Spring seat shims (set of 4), 0.020" thick (0.5mm).
Spacer shims to increase valve seat pressure and overall spring rate.
These were also used on all the 8 port head valve seats to prtect the alloy seats from wear. (8 port now C-AHT...
Spring seat shims (set of 4), 0.040" thick (1mm).
Spacer shims to increase valve seat pressure and overall spring rate.
These were also used on all the 8 port head valve seats to prtect the alloy seats from wear. (8 port now C-AHT36...
Fitting kit comprising of studs, nuts, plain washers, spring washers and a gasket
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.
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.
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
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...
Originally fitted to Minifin rocker covers as standard Rover equipment, it will also fit almost every other rocker cover including our FP26 range and Minispares alloy covers. This improved cap has a large grip and an improved lock system...
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.
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...
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...
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