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Topic: HELP!!! Intake Valve Discoloration, anyone have experience running terrible

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Old 04-06-2009, 02:32 PM
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ruger311
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Default Topic: HELP!!! Intake Valve Discoloration, anyone have experience running terrible

Well to start things off the car is a Dart IE 347 JE pistons, Scat crank, Scat H Beams, RHS 200/64s, Comp XE 282 HR, HP Stg 3 T76 @ 11#s

In early feb the car ran fine dynoed around 600rwhp at local club dyno day, first day at the track ran 11.2 @ 126 then 11.1@ 131mph,, one thing that is weird on teh 11.2 run i was faster to 1000' mark than the 131mph, so somewhere in the last 320' i made up 5mph???? car ran ***** out, just need an auto!

weekend after started the car heading for the track and at start up sounded a lil different and idled a lil higher, figured just needed to swap out crappy plug wires, so swapped them out, got to the track the car cut out in every gear from 4000-6000rpm, actually just stumbled but made it up, ran crappy at the track

drove it home, checked plugs 1-7 were brown and looked fine, #8 was kinda oily and wet looking,, swapped plugs ran it around the street approx 6 miles, pulled plugs 1-7 looked great, #8 was a bit oily again, checked compression all holes were 142-145# so were testing good, pressured up on cooling system found no leaks

this weekend i pulled the intake off to find that #8 valve from where the stem tapers to the neck then goes flat all of that has turned a lil blue/purple color,,, this is on the INTAKE not exhaust,,, the other 7 valves look the same,,,,,has anyone ever seen this before?? dont really wanna pull heads but looking like i am going to have to..

here are the pics,, i know i have a lot of extra rtv on the water jackets but least they didnt leak, #8 is the farthest to the left,, the light light blue color on the valve was from me trying to use a flashlight to get a better pic, it is actually a metallic blue to purple color

http://s114.photobucket.com/albums/n...ger311/intake/









Burnt?? dont think it is bent but cant really say that since i havent pulled them yet, just by naked eye

thanks in advance
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