Valves, Springs, Guides and Seals

Lower valve spring locator, used only with dual valve springs. Ref: AEA403, AEA0403, CVB2.

Solid brass core plug for engine main oil galley; fits 1/2'' hole. Ref: 12G3503, 12H1735.

This thin, plastic crankshaft oil seal was used on the later belt drive conversion kits with a plastic cover and larger diameter crank gear.

Chrome version of the retaining nut for all classic Mini valve covers. Sold each.

This extra-long valve cover nut is sometimes needed for use with slant-top aluminum valve cover. Ref: SEN0023.

This pair of aluminum valve cover nuts has knurled edges, and can be cinched-down by hand. Ref: SAC0119, GE88.

Inverted-cup oil seal with a spring retainer to keep it in place; fits guides that have a machined groove to accept the seal. Ref: ADU4905.

Special Teflon valve stem seal, to be used only with SEN0354 valve guides. Ref: SEN356, SEN0356, 5-07210.

Cast iron valve guide, with machined groove to accept umbrella- or cup-type valve stem seal. Ref: LGJ100630.

Cast iron guide for all small-bore cylinder heads. Used on both exhaust and inlet. Ref: 12A186, 12A0186, VAG693.

Genuine AE standard cast-iron valve guide. Note the short taper, or bull-nose, which allows head casting support. Ref: 12G1111, VAG50911.

Genuine AE standard cast-iron valve guide. Note the longer taper, which allows improved flow. Ref: 12G1963, VAG50969.

Bronze valve guide for hi-lift applications. Ref: SEN0355, SEN355, APT-02A.

Bronze valve guide made specially for high-lift applications. Ref: SEN354, SEN0354, APT-01A.

Sometimes a valve guide with oversize diameter is needed due to a loose fit in the cylinder head casting. These guides are bronze material that gives good life and are .002'' oversize on the outside

Manganese-bronze alloy valve guides, used to prevent damage to expensive valves; set of 8. Ref: C-AJJ4037, SEN0001.

This is a very small collar that fits around the valve stem to centralize the valve spring for situations where the spring needs to sit directly on the head to obtain the correct fitted length. Ref: C-AEA654, C-AEA0654.

Top caps for dual valve springs for standard road use; use with single narrow groove valves only. Ref: 88G617, 88G0617.

Valve spring retainer for A+ valves with triple-groove keeper; accepts single- or dual-valve spring.

Cooper S-type retainer for dual valve springs, in upgraded steel; use with narrow single groove valves only. Ref: AEA653, AEA0653.

Dual valve spring set for road use on 1275/1300cc engines. Ref: 12G1137, SEN0039, VSP3964.

Set of eight (8) dual valve springs for classic Mini A-series engines. OEM equivalent.

Dual valve spring set for fast road/rally rpm and high valve lifts of up to 0.495''. Ref: C-AEA526, SEN0092.

Dual valve high-lift valve spring set, manufactured from superior quality steel wire imported from Sweden. Ref: C-AEA527, SEN0093.

Special Swedish spring wire is used to produce a spring that tolerates lift of up to .490'', as found with high-lift rockers. Ref: C-AEA525.

Highest-quality valve spring set specifically designed for classic Mini race heads; proven after years of winning championships.

Pair of competition-quality valve cotters for single-groove valves; CNC-machined from 4340 and heat treated. Ref: 88G459EVO, 88G459, 88G0459.

With classic Mini A+ engines came the introduction of triple goove valve keepers, also called collets, cotters, and top clips. Sold per half.

Single half keeper for single groove valve; also called collets, cotters, and top clips. Ref: 88G459, 88G0459.

Early-style valve stem keeper to fit valves with the wide groove. Used.

All 850-1098cc engines used small o-rings on the valve stem for guide oil control. Eight (8) required for full replacement; sold each.

Cup oil seal with spring retainer to keep it in place; as fitted to the MPi classic Mini. Ref: LJQ101160.

Triple-groove style exaust valve for A+ 1275cc classic Mini engines. Ref: TAM1061, V90357.

Triple-groove style intake valve with unique top cap, for A+ 1275cc applications. Ref: TAM1058, TAM1058SLP, V91954.

Intake valve, 1.4'' as used on MG Metro head. Ref: TAM1059.

Standard exhaust valve for 1275cc head. 1.15'' diameter with single narrow groove for the keepers. Ref: AHU1049, CAM4601, 12G1322.

1.22'' (31mm) dia x 3.57 exhaust valve, produced in EN214N steel and stellite-tipped. Ref: C-AEG107.

1.3'' competition-quality valve constructed of forged EN24N stainless steel.

Single-groove intake valve, as typically used in non-Cooper S 1275cc cylinder heads. Ref: 12G941, V34274.

1.4''x3.57'' intake valve for 1275 cylinder head 12G940 or 12G1316. Ref: AEG592, AEG0592, V90193.

Many early engines used this size exhaust valves, which are recognized by the wide groove to accept the large early keepers/collets. Sold each.?

Exhaust valve common on small-bore cylinder heads; single groove at top of stem. Ref: 12A1987, V34859, CAM6121.

1.09" diameter intake valve for 948cc with wide groove for use with the original keepers.

1.15'' intake valve for early classic Mini Cooper 997 cylinder heads.

Triple-groove style exhaust valve, fits 998cc classic Mini engines built after 1984.

If you are working on an A+ classic Mini, you will probably find that the valves have a triple-groove style keeper. Besides the keepers, the top caps are also unique to this application.

Inlet valve in 1.156'' head diameter as found on 998cc engine with narrow keeper groove. Ref: 12G3036.

1.10'' single-groove intake valve as use in early A+, 1980-1984. Ref: CAM6502.