1980 Charger 85 hp Gaskets

[wolfie-uk]

hi, another question, have continued strip down of the powerhead from the leg, i can only find one gasket number listed for the ones that go from the head to the "spacer" base plate, and no number for the "spacer" to the leg, are they the same ? if not anyone got the part numbers i need please.

Eng model number 858 HOC

 

[Frank Acampora]

Re: 1980 Charger 85 hp Gaskets

There is only one gasket between the block and match plate. when you mount the block/plate/exhaust downtube on the motor midleg, you use a thin coat of silicone rtv. Don't use too much as there is a small water passage around the perimeter that can be clogged.

 

[wolfie-uk]

Re: 1980 Charger 85 hp Gaskets

Great Thanks Frank, the match plate has a tiny crack in it by the rear water passage, looks like a PO had thumped it, ( been welded at the moment get it back Tuesday after work ) apart from that it all looks goos, just got to split the block now as the oil seal for the bottom bearing is shot, ( when i removed the gearbox its collar and spring were sitting on top of the waterpump housing and when you looked up you could see the bearing shining like a light) Is it a standard seal i can get from a bearing supplier or specific to Chrysler ?

 

[Frank Acampora]

Re: 1980 Charger 85 hp Gaskets

I have only seen them as an assembly with the bearing itself and have not had occasion to remove the seal. I would not, however, be surprised if it were a standard seal. If you do order a seal, be certain to specify all stainless--that is stainless shell and stainless garter spring. I have ordered some seals and been assured that seals are only made in stainless. A year later, the garter was rusted as was part of the shell--guess the guy won't get any more of my business.

You did however mention collar and spring--usually there is a slight land on the driveshaft just below the splines. a steel collar sits on this land and a rubber bellows seats into the collar, bevel side up. It presses against the crankshaft when the lower unit is attached to the leg. This helps to seal out moisture from the splines and prevent the hardened steel crankshaft from rusting and cold welding the shaft in it. The seal shell and spring are big enough to pass over the crankshaft/driveshaft seal so yes, it would lay on top of the water pump. A bad crankshaft seal will allow some crankcase pressure to blow by and this would thereby reduce efficiency on that bottom cylinder.

 

[wolfie-uk]

Re: 1980 Charger 85 hp Gaskets

hi Frank, yes it was only the garter spring and the lip it goes round off the bottom bearing seal, the other ring and compression gaitor were still sitting on the drive shaft as they should, these are in good condition.

Thanks once again for your sage like advice.