Offshoreonly.com - Two piece valve covers

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Quote:

Originally Posted by dunnitagain (Post 4511512)

About all of the Manuf in Napcar use a 2 piece cover with no problems. They are all Billet though , not a Casting . We made ours with a .375 wide flange and dovetailed in a .080 Viton Oring . No Leaks ever.
But the dry sump pumps pull 20-22 inVac in the Crankcase , You cant even pull the damn things off with no bolts in them when the engine is running !
Im sure someone makes a good BBC 2 Piece cover , but the are gonna be pricey!

Been awhile but i remember somewhere around 500 dollars for the set and i think i had to buy screw in breathers also. I have KE headers for 7 plus years and not a single problem so i'm 50-50 with this goof.

Quote:

Originally Posted by PowerplayDave (Post 4511668)

I had to add the breathers and puke tanks and they still leaked like a sieve.