finally got around to cutting my fuel pin. when i installed it today i noticed another beautiful messed up thing with my truck, my fuel pin O ring is leaking. fantastic i know. will this leak affect performance or milage until i fix it? and i dont know how long its been leakin so will it have any ill effect on the IP?

here are the pictures of the profile i put on the pin.

 

Cannot offer help on the Leak, but nice cutting, have you run it again since?

 

yea i ran it. i noticed it seemed better on the bottom endd more responsive and ive seen a little increase in boost

 

deeper, more curve at the low end, just my .o2$

 

running it till you fix it wont hurt, your ground pin might make it worse now the pin goes out farther. grind looks good, no need to grind to deep, the afc lever hits the housing inside at a certian point so grinding to far just lets the pin push farther due to fuel pressure to ride on the fuel cone but you dont get more fuel. just more chance of a leak with a 15 + yr old o ring!

 

i just did my own grind. mine was more wild and it is so aswome

 

if you look at the wear pattern it doesnt ride up to the deepest part anyway, thats why i ground mine alot at midway between the bottom of the pin to the skinny part. looks simmilar to a denny t pin as far as cut but im sure his can go way deeper due to his not being cut halve way through the other side.

 

does anyone know if theres a way to get your fuel screw out without taking apart or lossening the IP i know that there probably isnt but i figure id ask cause im sure someone has tried

 

Simple hand tools.

 

If it's a play truck, when you have the pump apart to repair the fuel leak you should just leave the AFC lever out. That's what I did.

 

Its his daily driver so I doubt he'd do that.

So Nick what are you EGT's now without an i/c... our egt's on the 91 really went up when we ground the pin. with only 1 turn on the fuel screw.

 

i see a bit over 1000 degrees. so i wanna take the fuel screw out and take the collar off and put it in as far as i can. i also started making a 3 inch crossover to compensate for the heat so thats one of my efforts to try and cool it down when i put the fuel screw in.

 

dang, that hx35 must really help.

Is your pyro before or after the turbo?

 

pre in the manifold