Those look like NGK TR6 plugs which is what just about everyone is running.

 

Agreed. At those boost levels and no juice, the plug choice isn't the issue (unless he is running a colder than T-R6 level).

 

I ran TR6 plugs for 6yrs on boost, just recently switched to non projected. TR6's worked just fine for me and a bunch of other people. With that fuel setup I don't see how your injectors were not beyond maxed.

 

yes i have used these same plugs for 6 years also and haven't had a problem. as for the fuel system i do agree with you. i don't understand how it was fueling the motor for so long on 13psi. i will be changing that you as well. really im not shooting for a record truck just something to have fun with. im planning on over building it this time. id really just like a mid 11's with the truck then im done.

 

i would get that injector checked. kinda odd that the same cylinder is failing . i would check the coil for that plug as well.

 

also another question. i have another block that has been bored out. but after the bored i ran it for about 1500 miles. then took it out tore it down. the cylinders look perfect. still have the crosshatching and look really clean. im gonna put this motor back together and i was wondering will a bead breaker do the job to help seat the rings or does it need a honing? i will post pictures of the block when i get home.

 

I'd probably throw a hone through it just to knock any sort of glaze that may have formed it I wouldnt be scared of it either way.

 

I dont see how it was still alive.. i maxed out 44# injectors on 6-8psi on a stock lq4.. 13psi was prolly way more than they wanted.

 

I know its crazy it lived so long. Here's the real kicker is I have got the most miles on the motor that I was running 13psi on. The motor I ran 9psi on didn't even come close to living as long. Unless so how I have bigger injectors than I think but my paper work says 42# are what I have. What is your setup now and what are you running for injectors?

 

heres a quick video i took. you can see how much it smokes with no load on the motor and just dry rev it.
MVI_0496.mp4 video by shawnss_photo - Photobucket