I am looking through the previous owner's pile of pressure plates. He has TR3 pressure plates and the original Standard Vanguard pressure plate. The SV pressure plate has a large metal ring in the center which apparently rides against the throw-out bearing. The TR3 pressure plate has 3 large metal fingers and looks like it wouldn't mate well to the throw-out bearing (like a big alloy bushing with a carbon insert). The previous owner has emotional attachments to his Morgan parts and still has a basket case flat rad +4 that he disassembled for a disk brake upgrade in 1962. He won't part with the original Standard Vanguard pressure plate. The replacements I've seen are the later TR3 style. Has anyone put in the later TR3 style pressure plate with the original Morgan Moss box throw out bearing? Does it work? It it necessary to have the ring in the center for the TO bearing to ride on? See the jpegs. TIA (Thanks In Advance)
Bill, You need a clutch pressure plate with the thrust pad centre ring on it. The standard carbon ring at the front of the sliding allloy sleeve will be destroyed if you use one with just the three forks on it. There are some where you can take the thrust pad off one pressure plate and fit it to the other but not all are like that.
There is a conversion to modify the ali sleeve to take a MGB thrust bearing (I think is described in Fred Sisson's book) and this enables you to use the lighter (and stronger) diaphragm clutch.
If you want to stay with the standard set up, then, as above , you must use the spring clutch with the thrust pad centre ring.
Andy G 1999 +8 , Indigo Blue. Ex-John McKecknie/Mike Duncan 1955 +4 racer.
