Looks like luck was on your side. Good luck with the repair!

 

Looks like a lot of timing too me. better leak and compression that cylinder, Ill bet you its hurt.

 

I don't think you detonated too bad. Just just got a real bad lean condition causing it to melt the valve. Detonation tends to pop cast pistons. Step it down to a 100 shot and go a little fatter on the fuel jet. Even with a timing tuner you would have melted that valve. I had my timing way back with my timing tuner and it still melted the valve. I even have a bigger fuel pump in my car and it is running out of fuel on the 150hp jets. I am going with a stand alone system to eliminate that problem. Not everyone has this problem but it was happening to me.

 

did that exact same thing on the wife's car. #2 exhaust valve got burned up. this was back in sept 2005.

 

If I just added a stand alone fuel system filled with race gas (pump gas in the tank), how big could I safely spray? 100? 150? Even more?

 

i have the hsw stand alone and spray a 200/250 shot but i have bigger fuel rails, 42# injectors, timing tuner and the racetronix kit it seems to me that the more often you spray the plugs fatigue and fail exspecialy with the larger shot and im running a 7 heat range plug

 

I had a TR6 come apart on me last week. Haven't compression tested it yet, but it seems to run and drive normal and doesn't smoke.

 

Just compression tested it, I was 185 cold all the way around. :-)

 

if you go 150 shot you might consider to get 2 step colder plugs