Did you actually reinstall it yet? Whenever I've used the rebuild kits the shaft always seemed extremely tight in the seal but always worked fine when installed.

Looks like there's good replacements around but if you really want it exactly the original length you can always get one made quite inexpensively at a local hydraulics shop.

Also a great way to send little chunks of metal into your valves and piston rings. Free honing job I suppose .

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Looks like it is now listed for $9500? Seems somewhat steep for the condition if so. I missed one last year that was in far better shape for $10,500 CAD.

You may find this old thread useful: "1929 640 Rear Pinion Seal"

There's an oil slinger on the back of the seal which should deflect the majority of oil. It seems that the felt seal is the only real seal on the Pinion but it should not be exposed to excessive volumes of oil when everything is operating normally.

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Unfortunately you'll just have to live with that when dealing with SMS. Awful service, good product. I waited almost a year for seat upholstery on one of my past cars. If they didn't have an established reputation I would have assumed they'd just stolen my money. They're just a very inefficient operation.

I think packing the pump heavily with grease runs a high risk of clogging the oil galleries. Perhaps you should take the pump out, clean it, and reassemble with assembly grease only.

Congratulations!

Pretty sure there's no reproductions available. Your only choices are to repair the existing peice or find a good used one, or a NOS peice although those are basically impossible to find. There are plenty of 51-54 parts cars around. It's not cheap to have them replated but at least you don't need to do everything.

There's a thread I saw somewhere on here or on another forum describing a Packard being converted to a conventional booster which for some reason I can't find at the moment.

As I recall the pedal conversion essentially involved moving the pivot point of the original pedal as close as possible to the brake pushrod to gain the required ratio. I'm not sure if it would be the same with a hydroboost. It's a little odd looking and makes the pedal move in a fairly tight arc but the poster reported being completely satisfied with pedal feel and travel.

I also saw someone trying to develop a complete retrofit kit including the floor plate on the Oldsmobile forum but I don't know if anything ever came of it.

I'm set on a stick shift Custom, so it seems wiser to keep waiting for a 22nd Series. Thanks!