We had a 90 minute race this weekend, and the 50a ignition fuse blew on the last lap. The motor is a B18C1 with a stock GSR fuse box under the hood. The car was towed into the pits, and I proceeded to change the fuse. As soon as I turned on the kill switch, the fuse blew again. I took a quick glance over the motor, under the car, and over the dash, and didn't see any burned wires. Anybody got any ideas? The car ran strong for 90 minutes. Thanks for any ideas.

 

You've obviously got a serious short.
Maybe in the starter/solenoid/ground touching the + treminal of that assembly?

Guess #2 ... your electrical shutoff switch/wiring?

Good luck with it whatever it turns out to be.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zygspeed &raquo;</TD></TR><TR><TD CLASS="quote">You've obviously got a serious short.
Maybe in the starter/solenoid/ground touching the + treminal of that assembly?

Guess #2 ... your electrical shutoff switch/wiring?

Good luck with it whatever it turns out to be.</TD></TR></TABLE>

+2

The most likely spots. Check for obvious issues, then disconnect battery and test with multimeter to ground along the circuit path. Break bolt-up connectors backwards from the suspect part/battery to find the bad segment.