Just for fun I decided to take the car to my local 1/8th mile drag strip. It did not go well.
I pulled out of the water box, was in the middle of doing a burnout, and the engine died mid burnout. Never even got to stage.
I got a push back to the pits and attempted to diagnose the problem with minimal tools. Eventually I gave up and proceeded to spectate and kick back a couple of beers.
I ended up towing my car home hours later.
Now in the comfort of my garage I could diagnose why the engine died.
I found my wideband had came un plugged. Apparently I didn't leave enough slack in the harness and when I did my burnout it must of pulled the connectors apart. My MS tune has a 15% EGO correction. It should still run without a wideband.
Next I checked the timing. I rotated the crank hub to TDC with alternator hub nut. I noticed while I was turning the engine over that the crank wheel was turning but not the crankshaft. EUREKA!
Apparently I snapped my woodruff key for my crank hub and the ignition system lost timing with the engine.
After further investigation it was discovered I didn't even have the crankshaft nut. It had loosened at some point and just fell off.
Fortunately no damage had occurred on the hub or the crank.
I got a new key and a used nut from my spare stock.
The torque on the crank nut is something like 300ftlbs. I didn't have a tool to apply that much torque. So I tightened it till the emergency brake could no longer hold the car and tack welded the nut to the crankshaft. That should prevent this from happening ever again.
I'm going back to the drag strip tomorrow. I'll make another post with hopefully better results.
Sent from my SM-G960U using Tapatalk
I pulled out of the water box, was in the middle of doing a burnout, and the engine died mid burnout. Never even got to stage.
I got a push back to the pits and attempted to diagnose the problem with minimal tools. Eventually I gave up and proceeded to spectate and kick back a couple of beers.
I ended up towing my car home hours later.
Now in the comfort of my garage I could diagnose why the engine died.
I found my wideband had came un plugged. Apparently I didn't leave enough slack in the harness and when I did my burnout it must of pulled the connectors apart. My MS tune has a 15% EGO correction. It should still run without a wideband.
Next I checked the timing. I rotated the crank hub to TDC with alternator hub nut. I noticed while I was turning the engine over that the crank wheel was turning but not the crankshaft. EUREKA!
Apparently I snapped my woodruff key for my crank hub and the ignition system lost timing with the engine.
After further investigation it was discovered I didn't even have the crankshaft nut. It had loosened at some point and just fell off.
Fortunately no damage had occurred on the hub or the crank.
I got a new key and a used nut from my spare stock.
The torque on the crank nut is something like 300ftlbs. I didn't have a tool to apply that much torque. So I tightened it till the emergency brake could no longer hold the car and tack welded the nut to the crankshaft. That should prevent this from happening ever again.
I'm going back to the drag strip tomorrow. I'll make another post with hopefully better results.
Sent from my SM-G960U using Tapatalk
225/50-16. Look at all that meat. 
Also changed my diff bushing to help with those hard launches. 
I made a couple passes at the test and tune at the local 1/8th mile. I struggled with the launches. I would leave and the car would bog. 8.5 was the best I could do in 3 passes. 
Then I put in a fresh nitrous bottle and went for 1 more pass. I decided to leave the nitrous on for the entire pass. Normally I would turn it on after I shifted to second or halfway through 1st. That and I gave it a lot more RPMs to prevent the big. The results were impressive. 
That pass works out to a 12.6 second 1/4 mile. Time for more nitrous! I'm gonna spray this turd to 11 seconds. Sent from my SM-G960U using Tapatalk
How could this happen with only 400 whp? 
I expected to melt a piston or bend a rod with nitrous. Breaking a crank just seems unreal. I'm going to rebuild the engine, just might take awhile. 
Crazy thing is that the car still ran and drove with the broken crank. Sent from my SM-G960U using Tapatalk
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