24.5-25.5cc combustion chamber for use with flat top pistons. This specification of cylinder head is the only modified version for the small-bore based engines Mini Spares supply as it is judged to be the only one worth up-grading to. Based on used c...

The distributor drive spindle in all A plus engines which is now obsolete from the factory and Xparts but remanufactured as NON genuine.

Oil pressure relief valve spring for Cooper S 1961 to 1971.

3 Bolt hole fixing pump for A plus 998cc engines. This has a spade type drive spindle to fit the slot in the camshafts. This replaced earlier peg type drive which fitted into camshafts with a pin (known as pin drive).

Cup type core plug for all A plus and 1275cc engines except for Cooper S. 33.6mm wide.A plus 5 required but only 4 on 998 A plus. 1275 has 2 core plugs oil pump end of block whereas 998 only has one

Good maintenance, just as you would never rebuild your motor without replacing the crank thrust washers, you should also care about the camshaft thrust plate. Sometimes called the "triangle plate" this small but important plate doesn't just hold the ...

Plastic tensioner pad to take up the slack in single row timing chains on A plus engines that wears and should be replaced nearly every time you have the timing cover off. From engine numbers 99H791/10H791 AND ALL A+. Fitted to 998/1100cc from 1979 a...

Set of 8, original leyland ST product but now made for us to our specification. Critical to the life and performance of the camshaft is the use of high quality cam followers. Remember, they operate in a finite hole and thus the dimensional tolerances...

The oil pressure relief valve consists of an aluminum plunger with a heavy spring behind it. Access is through the 15/16" domed cap nut beside the dizzy. Once this nut is removed the spring will be visible. The plunger is beneath the spring and will ...

Replace with new camshaft,it's almost too easy to overlook during a rebuild. Camshaft bearings are pressed into the block and thus are usually done by a machine shop. You would not rebuild an engine without replacing the rod bearings, so why not the ...