tnt 150 hp 51lbs of fuel pressure 0n stand alone I have adjustable regulator and will be tuning with fuel pressure not jets .This was from one pass yesterday on spray.the other plugs I described in post were darker and I took your advice and pulled some fuel on this pass . 7.16 @ 95 n/a 6.65@ 106 on spray but didn turn on nos till about 60 foot out so probably more like a 6.50 if I would have turned it on qicker but I wanted to make sure I hooked because it was a grudge race.60 ft was 1.59 na and nos

 

Black around the threads and the ring looks like oil to me.

 

plugs are 5 7 and 4

 

Ahhh, hard to tell.


Chad, Spray that bitch off the line!

 

oil look is probably from asembly lube I put on threads because I coulnt find my neverseize.

 

Alot better then I thought they were gonna look. Lol. Very similar to what mine look like on a 150 with a 62 32. Mine are a little less rich then yours and we will go to a 30 jet next time out and take a degree away from it. My threads and base are slot cleaner then yours. I would say it is oil as well.

 

No way to get around the oil issue unlees you put a vaccume pump on the car.
Just have to deal with it, clean your intake and change plugs often.

 

Are those the last plugs or did you change pressure and have another set to post? if those are the last plugs go down 2-lbs of fuel. on the next hit evey time you lean it out you need to pull a little timming once the fuel is good you might be able to creep some timming back in.

 

those are the plugs at 51lbs .I lowered it from 56 after your post last week . but I will take another 3 to 5 lbs out and see what happens but probably back to track till next thursday or later