Our dragster has given me grief for two years, all started with a nitro backfire in intake for no reason. Data showing timing changes outside of the map, checked mag, replaced mag, checked grid replaced grid, changed points box, changed coil, checked wiring, went through engine which showed lots of detonation. Pistons and rods every other race. Fuel settings were same double check triple check. We changed to a new fuel pump and didn’t revert back(this pump wasn’t quite as good but not far off. Changed boost controller
All in all we changed everything with no improvement.
Changing to efi now. Engine builder pulls mag drive out to put in cam sync sensor. Broken snap ring on drive, this never fails. In all the rebuilds this part stays in front cover since it never fails. This explains the timing changes, why our phasing was always off, lack of rpm and detonation. I’ve had to sell two kidneys to run this car, many nights of no sleep, lots of drinking.
On a positive note we are going to fueltech efi, alcohol instead of nitro, turning up compression and boost. Should be about same horsepower and easier and cheaper to run. At least we found it finally
All in all we changed everything with no improvement.
Changing to efi now. Engine builder pulls mag drive out to put in cam sync sensor. Broken snap ring on drive, this never fails. In all the rebuilds this part stays in front cover since it never fails. This explains the timing changes, why our phasing was always off, lack of rpm and detonation. I’ve had to sell two kidneys to run this car, many nights of no sleep, lots of drinking.
On a positive note we are going to fueltech efi, alcohol instead of nitro, turning up compression and boost. Should be about same horsepower and easier and cheaper to run. At least we found it finally
