I have used the 150 shot several times with a stock motor,
I have since, Built a forged bottom end, I ran the 150 shot fine, for several times, I then upped to 200, sprayed a couple times, And on like the 3 rd time, I melted some plugs....2 & 4
I havent sprayed since till the other night, One I sprayed 150, And melted the # 2 plug again....
Is this a lack of fuel or too much timing?
I have the timing retarded 2-3 degrees from stock, And use 109 Unleaded race gas...
It just doesnt add up.....

Joseph

 

Is this a wet or a dry shot?

 

Wet

 

Its running too lean.

 

Well, Heres the good part....Its a stand alone fuel system....
Im worried about losing fuel pressure in the top of the gears, I notice voltage drop on my guage cluster volt guage, And the pump is just hooked up through a switch and relay.....
Why only those cylinders though?

Thanks for the replies

Joseph

 

What plugs are you using? Single or dual nozzle or DP?

Matt

 

try using an ac delco R42LTS its a very good plug for nitrous lt1 car.... i kept having the same problems with my tr6's

 

I also use the delco plugs and have never had issues spraying a 150 shot. Sounds lean to me also. What do the unburned plugs look like color wise? Are they white, light tan or very dark or black?

Ken R.

 

Do you have some pics of the plugs.It could be many of things.Lean problems,or timming.What set up are you using.
Dave

 

He doesn't even have the car anymore , I doubt it if he has any pics of the plugs though...

 

LOL,Well then its going to be hard to diagnose the problem here.
Dave