Topic: HELP!!! Intake Valve Discoloration, anyone have experience running terrible
#1
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
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
Thread
Thread Starter
Forum
Replies
Last Post
YoungStangsMan
5.0L (1979-1995) Mustang
15
09-05-2015 07:01 PM
Calizic
4.6L (1996-2004 Modular) Mustang
5
08-28-2015 01:46 PM