Started 24-hour ChumpCar race with a broken transmission (no 4th synchro), were leading the race, and suddenly lost power and started making horrendous noises.
45ish minutes later, noise was traced to a missing throttle body screw head, which had popped off and was dancing around cyl #1.
Went back on track, spit out screw (through turbo....) and kept racing.
Screw beat the **** out of the turbo. Kept racing.
Transmission got stuck in 3rd gear. Kept racing.
Finished 2nd overall.
Now, the question:
We got a new 1.6 throttle body to replace it, did the JB Weld fix on the throttle body screws recommended by Emilio at 949Racing, and went to swap over our 4-wire Automatic TPS sensor (our car used to be an AT and the ECU still thinks it is.) and we found the problem above.
Dirty TB on the right is our old one. Shiny one on the left is the new one (from Alex at 2ndchanceroadster.com). Clearly there was a major design change at some point...
Anybody know which cars were like the one on the right? We're coming up on another 24-hour race and we're dead in the water without a throttle body.