(67,50 €) £67.50 exc vat
(81,00 €) £81.00 inc vat
In stock
This piston has a possible compression ratio of 10.3:1 as fitted to Cooper RSP 1990.
The best performance 1275 pistons are C-STN100 range which have 9.73cr when the piston is 1mm down the block. . Current pistons differ from the 60s originals and now have a "low drag" slipper skirt design and a shorter lighter 20.6mm wrist pin. Wrist pin height is 1.5276" to crown with a top dish of 8cc.
Performance is enhanced by the use of 3mm oil rings and the smaller drain slot behind this ring decreases the risk of breakage and 2 of 1.5 mm compression rings. Crown depth to first ring is about 10mm
Rings are R41570-00
AE Hepolite is now owned by Federal Mogul and trademarked "Nural"
Sold singly,4 per engine required--was Rover piston TAM2050-00 stamped AE21963 as fitted to 1990 Cooper 1275 engines..Now Nural stamped 87-524100-00
(67,50 €) £67.50 exc vat
(81,00 €) £81.00 inc vat
In stockRecommended usage 4 x P21253-00 to fit one mini.
Mini Spares own Universal gasket set for solid wall blocks
For any manual block, includes gaskets for "A"Plus and pre A Plus timing covers, but is less tappet chest cover gaskets. Does not include clutch oil seal.
We now offer an en...
Chrome ring set with 3 piece oil rings as preferred by engine builders for P21253 pistons.
60 thou oversize low drag slipper type pistons for modern day compression ratios and unleaded fuel.
Typically installation will result in a minimum 8.8:1 compression ratio but on some Metro versions it was higher.
Current pistons ...
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. std ring size
For performance see steel ring set with 3 piece oil ring as favoured by engine builders[link]C1...
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. 20 thou oversize
For performance see steel ring set with 3 piece oil ring as favoured by engine builders[link]...
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. 60 thou oversize
Rover piston were stamped 21963 for high compression but 21962 seems to be stampe...
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...
STD size low drag slipper type pistons with a minimum 8.8:1 compression ratio but on some Metro versions it was higher.
Current pistons differ from the 60s originals, improved with a "low drag" slipper skirt design and a shorter lighter wri...
Low drag 1275 piston standard size 2.780 plus 40 thou oversize(Rings included).
This piston has a possible compression ratio of 10.3:1 as fitted to Cooper RSP 1990.Engine then becomes 1310cc
Current pistons differ from the 60s origi...
These are plus 60 oversize and for other details see C-AJJ3382-40
AE Hepolite is now owned by Federal Mogul and trademarked "Nural"
These super high-quality FM-B2 cast pistons ensure the alloy has the best molecular consistency w...
Minispares steel connecting rods are machined by Arrow Precision Eng from double air re-melted 817M40 forgings to X condition. Weight 445g per rod
The new X rod design maintains stiffness whilst reducing weight where it is not required. ARP ...
Timing cover front plate and tensioner plate bolt and washer kit. Comes with all parts to fit the cover except for the counter sunk screws if fitting a duplex kit (our duplex kits all come with these).
Replacement O ring for the Minispares range of chrome dipticks
You should replace the camshaft bearings every time the block goes to the machine shop. These bearings fit all late model 1275cc blocks (the ones without tappet covers on the back) It's almost too simple and thus often overlooked during a rebuild. Ca...
Set of +0.003" size 1275 crank thrust washers.
Mini Spares best quality complete gasket and seal kit for engine block and gearbox,for all common engine types and sizes.
Also comes complete with Mini Spares Evolution clutch oil seal 13H2934MS, differential oil seals...
ACL Race Bearings
ACL Race series bearings are precision manufactured to a wall thickness of ±0.0040mm giving engine builders close control of vertical oil clearance.
What is the purpose of ACL Race series bearings?
...
ACL Race Bearings
ACL Race series bearings are precision manufactured to a wall thickness of ±0.0040mm giving engine builders close control of vertical oil clearance.
What is the purpose of ACL Race series bearings?
...
ACL Race Bearings
ACL Race series bearings are precision manufactured to a wall thickness of ±0.0040mm giving engine builders close control of vertical oil clearance.
What is the purpose of ACL Race series bearings?
...
ACL Race Bearings
ACL Race series bearings are precision manufactured to a wall thickness of ±0.0040mm giving engine builders close control of vertical oil clearance.
What is the purpose of ACL Race series bearings?
...
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