engine cover gaskets

[AlphaDogChoppers]

Isn't that how the primary gets lubed, and then it leaks out of there to lube the chain? ;-)

 

[crazypj]

I just overhauled a '66 Triumph TR4 engine - the rear main seal is a bunch of grooves in two aluminum collars that fit over a bunch of grooves in the end of the crank. It's not so much a seal as it is a baffle to keep most of the oil in the motor. "Most" being the key word here. Nothing like oil leaking from a freshly rebuilt motor and that being "normal." :

That's known as a labyrinth seal
ADC, TR4 is a car

 

[Sonreir]

Some leakage can be an interesting thing... Got a leaky cam seal? Just tap into the points cover and run a hose to the chain. Instant automatic chain oiler!

 

[620dark]

That's known as a labyrinth seal

It's the worst labyrinth ever. If it was a real labyrinth, there wouldn't be a minotaur, there'd be a hamster.

 

[jbeebe]

well i ended up just ordering two OEM gaskets from ebay, they got here yesterday and went on today. No leaks.

I was considering just making my own, but didn't really want to go buy hole punchers and mess around with it. I have a lot more problems that i'm working on with the bike, I don't want leaky engine covers to be one of them

 

[sovern]

I see there are several different types of gasket material. Is there a specific application for each type? -- http://www.autozone.com/autozone/accessories/Fluids-and-Chemicals/Gasket-Material/_/N-25w7?viewAll=true

 

[DrJ]

This is the correct material. I've used this for all engine gaskets except for the valve head. Also, do not use for carb floats, it's not fuel proof.

http://www.autozone.com/autozone/accessories/Mr-Gasket-12-x-18-x-1-32-in-compressed-gasket-material-sheet/_/N-25w7?CJPID=4003003&cmpid=cj&itemIdentifier=154452_0_0_

 

[sovern]

This is the correct material. I've used this for all engine gaskets except for the valve head. Also, do not use for carb floats, it's not fuel proof.

http://www.autozone.com/autozone/accessories/Mr-Gasket-12-x-18-x-1-32-in-compressed-gasket-material-sheet/_/N-25w7?CJPID=4003003&cmpid=cj&itemIdentifier=154452_0_0_

Just for future reference - what would i use for carb floats?

 

[DrJ]

OEM o-rings.

 

[sovern]

gotcha. thanks.