MED INLINE 7.5 STEEL FLYWHEEL ASSEMBLY

You can, but the MED flywheel is CNC machined from EN8 steel, so we can safely make these far lighter than the standard cast iron flywheel. Only very mild lightening of the standard flywheel is recommended, as there is a real risk of catastrophic failure. This design also upgrades the clutch cover and plate to handle more torque, while the EN8 steel gives better durability on the friction face.

Lightening the flywheel makes no difference to the power output of the A-Series engine, but the lighter overall rotating assembly will sap less energy under acceleration. Therefore, the available power can be used more efficiently, making the car faster off the line. This is especially useful in a lightweight classic car with more modest power outputs.

Inline-engined 1275cc A-Series classic cars, predominantly MG Midget and Austin Healey Sprite, but it's also popular for Morris Minors, classic Lotus and single seater race cars with the Sprite running gear. These do not suit the classic Mini, or small-bore inline engines such as 1048/1098cc.

The clutch plate spline is designed to fit the original BMC gearbox, however we try to have a small stock of Ford-splined clutch plates as an alternative. If you have this specific gearbox install, please contact us and we can confirm current availability.

As supplied, no, but a competent machine shop will be able to adapt the flywheel to suit. The Marina crankshaft has a larger diameter flywheel mounting face, so you will need to enlarge the centre bore of the flywheel to suit. It is approximately 0.040" larger in diameter.

This uses a high-quality resin bonded mixture of heavy-duty metal compounds. Compared to a standard plate, this improves longevity, reduces judder, gives a higher coefficient of friction and also copes better with higher burst speeds.

Either the standard original type, or one of our high-torque upgrades, part number MED-5220-HTII. Alternatively, for those on a weight-saving mission, we also have the micro starter motor - part number MED-5255-MSI.

Depending on the transmission housing, some light machining may be required internally for clutch cover clearance. The kit includes a roller bearing setup in place of the standard carbon release bearing. There are two options on securing clips for the clutch arm, and we include instructions on how to install these.

We would recommend a set of ARP flywheel bolts, part number MED-3502-QB, to secure the flywheel to the crankshaft.