stakeside

Dodge Bros DA-6 help

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Received gasket set for my DA-6 and I believe I need additional gaskets for rear of oil pan.

 

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There should be an upper plate that is missing on this engine. Any one have a photo of the upper plate? It should match up to the lower plate. Each plate should have a cork gasket.

 

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Missing rear crankshaft seal

 

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Is there a rope type seal required here at the rear of crankshaft?

If so where is it available ?

 

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Also there is no rear main seal as we know it. Just a felt seal that seals on the rear main cap and the slinger on the crankshaft that slings the oil into that trough in the pan. 

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Thanks for your response.

What is confusing me is the 3 holes in the rear or cap on the sloped side. They are on the other side of felt seal.

 

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Yes those three holes are on the outside of the felt seal. The felt seal prevents oil pan oil from pouring out when going up a steep hill and the three holes allow oil that just went threw the rear bearing to drain into the trough then threw the tube back into the pan. 

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Placed new felt seal and some leakage still occurs.

I see the area behind main bearing has a reservoir with drainage to pan and it seems oil should be caught there. 

Is there additional seal behind the main at rear of engine?

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There is no other seal that I’m aware of. I’ve never seen a engine with one and the parts book does not list one. Possibly excessive main bearing clearance causing excessive flow threw the bearing, overwhelming the drain tube ? Crankcase breather plugged? Excessive blow buy pressurizing the crankcase?  Just a few things that could cause leakage at that location.  I can’t cay mine is perfectly dry back there but it does not drip, the design does not work perfect under all conditions but it does work well enough to be acceptable in 1928. 😀 

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All your reasons seem to point to other possible problems. I am attempting to getting an older engine running. I am not sure of condition. It has decent compression but ?????? 

The felt seal did decrease the oil from flow to dripping. 

Thanks again. I not will need to remove oil pan again.

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