Gaskets

[RichBad]

Hi,

I’m trying to find some details (material/thickness) of the gaskets for  a 1927/1928 Four so I can make some replacements.

 

Diff rear cover - I assume it’s a thickish cork?

 

Diff front - I guess it’s a thinner/harder as if it compresses it would increase the pinion to gear engagement.

 

Oil pump bottom plate - I think it’s thin paper as anymore would result in too much clearance for the pump gears.

 

Appreciate any help - thanks!

[broker-len]

Olsen gaskets-------good company good gaskets-------used their product on my PA timing case cover     did use any sealer    no leaks

[RichBad]

Olsen didn’t have anything listed for the early ones.  I can make them easily enough from sheet just wanted to make sure I get the right material/thickness.

[cahartley]

Regarding the oil pump cover plate gasket.

Make it as thin as possible that will still allow the pump to turn freely.

[RichBad]

17 hours ago, cahartley said:

Regarding the oil pump cover plate gasket.

Make it as thin as possible that will still allow the pump to turn freely.

Thanks, I got it down to 0.002” endplate on the gear - hopefully that’s ok.

[robert b]

Richard that will be fine as it only a transfer pump not a pressure pump, it only lifts oil to the troughs and only runs at about 5 to 10 pounds.

[RichBad]

Thanks Bob. 

Do you know what thickness should be on the front of the diff?  I guess the thickness is less critical (as the pinion to gear mesh has to be set anyway) but it would need to be quite hard so it doesn't compress over time.  Something similar to the ones on the engine front mount and timing cover?

 

Thanks,

Richard

[robert b]

just standard gasket paper about 0.6 mm would do for front , 1/8 inch cork for the rear with sealer on one side only so that the cover can be removed at a later date 

 

[RichBad]

Perfect, thanks Bob