Why White Valves.
Drifting
Joined: Oct 2000
Posts: 1,825
Likes: 56
From: Shawano WI
Re: Why White Valves. (Eddie 96)
What you see is normal. When you look at the picture you will see that the two center exhaust valves (Smaller ones) are whiter than the two exhaust valves on the ends of the head. This is because there is no watter jacket between the two center valves causing them to be hotter and burn off any deposits that may form on them. The two outer exhaust valves are more grey colored because they are next to a water jacket and run a little cooler. The intake valves are darker yet because there is a water jacket between them. Also the incoming fuel helps to keep them cooler. Looking closer you can see that that all the intake valves are lighter near the exhaust valve where the run hotter and darker near the outside of the bore where they run cooler, allowing some deposits to build up.
Melting Slicks
Joined: Apr 2001
Posts: 3,399
Likes: 278
From: Olmsted Falls, Ohio
Re: Why White Valves. (Eddie 96)
Yes, it may be running a little lean, but they are not that bad looking. If you remove the valves and clean them up you should be able to see lots of discoloration on the valve face and way up the stem if it is really too lean.
Thread Starter
Race Director
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Re: Why White Valves. (KenSny)
Hey thanks for the great replies. I was kind of thinking it was too lean just wanted to get confirmation. I like the great explanaitions given.
