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 [...
Hi-Lift forged rockers on our special rocker shaft with AEG167 adjuster screws for road or race.
Ensure posts are equally tightened down to eliminate stress fractures on shaft.
Using 1.5 ratio high lift rockers has alm...
It is critical to understand that an oil cooler is not designed to last the life of the car. Sound maintenance practice tells us that whenever we are doing a major engine overhaul we should not fail to replace the cooler as it is almost impossible to...
special toothed belt for cooling belt drive kits
For alternator pulley to 28 tooth water pump pulley
ACL Main bearings for the crankshaft as preferred by performance engine builders standard size
Sintered copper lead, lead plated,steel backed
Nominal Composition
Copper 74%
Lead 24%
Tin 2%
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 ...
Mini Spares own Universal gasket set.
This engine block gasket set fits all manual blocks and include rubber tappet chest covers and bolt seals, also including A plus and Pre A Plus timing gear and cover gaskets. For the equivalent gasket se...
Worn throttle spindles cause erratic performance from your carb and sometimes the housing gets worn--These are the bushes to repair worn carbs when replacing spindles for HS4 carbs. As a guideline 0.3125" internal diameter ream body to 9...
3 OF 0.625 COMPRESSION RINGS AND .1575 OIL CONTROL RING.for P20773 pistons
For the original 1275 turbo Rover pistons. The only piston available now are plus 40 thou oversize in minispares mega range P22357-40 and they use our Mega ring sets C-AJJ3379
ringset for powermax 20659 piston with groove sizes 1.5mm and 4.00mm for one piece oil ring -ring measurements are slightly under this --the tapered ring with the ridge fits second groove down-
3mm OIL RING with compression ring size .0591" (1.5mm)and one piece oil ring .1181" (3mm)on p21253 pistons giving 9.7cr on 1275cc. 40 thou oversize
For performance see steel ring set with 3 piece oil ring as favoured by engine builders[link]...
These Piston rings are +40 oversize with 0.59" compression rings and 0.1181" oil ring fo 998cc
Sticker for the front edge of the twin carb air cleaner case. All Cooper and S models used this type.
This is the standard size valve with triple groove collets for A plus 1275cc
heads and 3.59 long. If you want the next size up use the TAM1059.
Low drag 1275 piston standard size 2.780 plus 60 thou oversize (Rings included).
This piston has a possible compression ratio of 10.3:1 as fitted to Cooper RSP 1990. The engine then becomes 1328cc
The best performance 1275 pistons a...
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