Maybe you need a larger tank so the compressor isn't having to work so hard? However, I'm sure what you have is a proven package. So maybe you have some undersized, or damaged wiring that's straining the system.
VCC #3
The car is coming along nicely. I had a decent thread going on the VOA forum...and don't have the desire to recreate it, BUT here's a quick synopsis.
Chassis #3- 2875lbs
EMCO DV46 transmission
Nuke Performance Air Jacks
Heads/Cam package- JMB Performance (639/641 to the tires)
Zebulon MSC Front Splitter
AJ Hartman Aero Rear Diffuser
Zebulon Rear Wing
MME Motorsports Air Shift Paddles
TKO Motorsports/Doug Shelby Engineering Flat Bottom Floor
Tilton Carbon Metallic Triple Disc Clutch
Brembo Motorsports 6 Piston Sprint Calipers
The car is fast, much faster than I am, we're working on that though. This weekend we were chasing issues with the air paddles. On Saturday under WOT when the onboard compressor kicked on, it pushed the car into limp mode. I think it's either a battery or alternator issue...diving into that next week. When the compressor kicks on at any other point (braking, 80% throttle, etc no issues). Sunday morning I had made up my mind to go for a flyer on lap 2, knowing that I would clear the lap before the compressor was needed, I was pacing 2.3 seconds ahead of my previous best through Turn 10 (out of 14). Turn 10 is a fast left corner taken in 3rd gear. I was accelerating out and it felt like my passenger front tire lost pressure and was bouncing a little. I let off the throttle, straightened the wheel and it went away... thinking that maybe it was just understeering poorly, I got back in the throttle and immediately heard a REALLY loud metal on metal cyclical noise coming from under the car.
My initial thought was the throw-out bearing, then maybe the clutch, and lastly the transmission. I got it up in the air and dropped the front tray and splitter and didn't have any fluid anywhere. Granted that the car was about 10" off the ground I felt like I did a pretty thorough investigation and couldn't find anything wrong externally, so I assumed it was the EMCO. Talk about demoralizing. I had talked to Larry over at EMCO over the winter and he was about 6 months out for rebuilds and it would cost a significant chunk of change.
I loaded it up and hauled it home. I dropped it off at a buddy's shop (who installed the aero, jacks and paddles) to check out Monday. Monday morning he called me and said it looks like one of the rear driveshaft bolts worked it's way out, and then the other was sheered off; the noise I was hearing was the driveshaft slapping the inside of tunnel. Thank God for a driveshaft loop and a flat bottom floor, saved a lot of headaches and money.
Ordered a new driveshaft and will have it installed by this weekend. Next week I plan to take it to a private track and try to iron out the limp mode issue.
Here are some photos:
![Tire Wheel Land vehicle Vehicle Car]()
![Tire Car Vehicle Wheel Plant]()
![Cloud Tire Sky Vehicle Wheel]()
![Tire Land vehicle Sky Wheel Vehicle]()
My 6' tall buddy (Brad Perkins, owner of Chicane Motorsports) next to my splitter.
![Sky Plant Leaf Cloud Art]()
Chassis #3- 2875lbs
EMCO DV46 transmission
Nuke Performance Air Jacks
Heads/Cam package- JMB Performance (639/641 to the tires)
Zebulon MSC Front Splitter
AJ Hartman Aero Rear Diffuser
Zebulon Rear Wing
MME Motorsports Air Shift Paddles
TKO Motorsports/Doug Shelby Engineering Flat Bottom Floor
Tilton Carbon Metallic Triple Disc Clutch
Brembo Motorsports 6 Piston Sprint Calipers
The car is fast, much faster than I am, we're working on that though. This weekend we were chasing issues with the air paddles. On Saturday under WOT when the onboard compressor kicked on, it pushed the car into limp mode. I think it's either a battery or alternator issue...diving into that next week. When the compressor kicks on at any other point (braking, 80% throttle, etc no issues). Sunday morning I had made up my mind to go for a flyer on lap 2, knowing that I would clear the lap before the compressor was needed, I was pacing 2.3 seconds ahead of my previous best through Turn 10 (out of 14). Turn 10 is a fast left corner taken in 3rd gear. I was accelerating out and it felt like my passenger front tire lost pressure and was bouncing a little. I let off the throttle, straightened the wheel and it went away... thinking that maybe it was just understeering poorly, I got back in the throttle and immediately heard a REALLY loud metal on metal cyclical noise coming from under the car.
My initial thought was the throw-out bearing, then maybe the clutch, and lastly the transmission. I got it up in the air and dropped the front tray and splitter and didn't have any fluid anywhere. Granted that the car was about 10" off the ground I felt like I did a pretty thorough investigation and couldn't find anything wrong externally, so I assumed it was the EMCO. Talk about demoralizing. I had talked to Larry over at EMCO over the winter and he was about 6 months out for rebuilds and it would cost a significant chunk of change.
I loaded it up and hauled it home. I dropped it off at a buddy's shop (who installed the aero, jacks and paddles) to check out Monday. Monday morning he called me and said it looks like one of the rear driveshaft bolts worked it's way out, and then the other was sheered off; the noise I was hearing was the driveshaft slapping the inside of tunnel. Thank God for a driveshaft loop and a flat bottom floor, saved a lot of headaches and money.
Ordered a new driveshaft and will have it installed by this weekend. Next week I plan to take it to a private track and try to iron out the limp mode issue.
Here are some photos:
My 6' tall buddy (Brad Perkins, owner of Chicane Motorsports) next to my splitter.
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