Milk in valve covers

Dragsinger · 05-05-2011, 06:44 PM

I am curious about this issue. Through the years I have built a number of very nice, fast, reliable drag race engines. I rarely have any problems, Just the routine happenings of drag racing.

Mostly small block Chevy's but a few big blocks.

The deal is, some of them milk the valve covers but some of them do not. It does not seem to matter what performance level or what equipment, some do and some don't.

These are engines built for customers and for my own cars and does not seem to cause any problems, oil looks good, engines run fine and perform as expected.

Aluminum heads do it more than iron heads. Also, if you run the engine to 200 degrees or so before putting in in the trailer that seems to help.

Have others of you witnessed this happening? Do you have any explanation of why some do and some don't?

05-05-2011, 06:44 PM	#1
Dragsinger VIP Member Join Date: Jul 2008 Location: Liberty City [East Texas] Posts: 1,760 Likes: 5 Liked 99 Times in 60 Posts	Milk in valve covers I am curious about this issue. Through the years I have built a number of very nice, fast, reliable drag race engines. I rarely have any problems, Just the routine happenings of drag racing. Mostly small block Chevy's but a few big blocks. The deal is, some of them milk the valve covers but some of them do not. It does not seem to matter what performance level or what equipment, some do and some don't. These are engines built for customers and for my own cars and does not seem to cause any problems, oil looks good, engines run fine and perform as expected. Aluminum heads do it more than iron heads. Also, if you run the engine to 200 degrees or so before putting in in the trailer that seems to help. Have others of you witnessed this happening? Do you have any explanation of why some do and some don't? __________________ Larry Woodfin 471W