deluded
Member
World finals kicked our asses this year. first time i've littered the salt with engine parts.
first day shake down runs with some great data logging information got us ready for a record run today on the 3 mile course. today's run found ron at 212mph at less than 1.25 miles into the run; he had gained 33mph in the last 10 seconds with about 25-30 seconds to go when KABOOOOM! lost the #2 rod (aluminum) which was suspect when we checked the bearings last week (rod bolts were hard thread out, hard thread in). everything on the run was perfect: 49psi boost, 1550egt, 11.3a/f, 197F coolant, 160F air inlet temps (not bad considering 492F turbo discharge temp!). only issue was that our new trick-wazu alternator died at high rpm giving us only 11.5V; stock mitsu with less than half the amperage rating was better than that. no tear down report on the engine yet, but i'm not optimistic that much is salvagable. driver's axle is done, too (DSS).
i don't think we'll run aluminum rods again for this type of racing. it is impossible to tell for sure when they are about to go, and we put a whole season worth of drag racing type revs on ours at every meet. doesn't help that we were running 10Krpm shift points today.
Biglady112: you make this fun for me /ubbthreads/images/graemlins/smile.gif i love to get ron (car's 75yo owner/driver)riled up about losing the record! friendly competition is the best part of land speed racing to me; most competitors will lend their last spark plug to the guy running on their own record and give him/her a sincere congrat when they beat him. keep working on it; that record is close to within your reach. now that said, since the F motor is gone we will be back in G next year, but maybe as a front wheel drive so that other classess will be open to us.
someone here noticed that our dyno graph was pathetic in the spool up department (they were much nicer in describing it). that was the result of taking 10 cam degrees of overlap out to diagnose a misfire, then before we could finish our tuning session our oil pump (2.5 seasons old) gave it up and started leaking a scary amount. with the overlap back in we generally have full boost and the corresponding power almost 2krpm sooner. in fact, the car couldn't even pull 200mph with that graph's power curve (run one at WFs was disappointing /ubbthreads/images/graemlins/smile.gif ). run two with the overlap back in (214mph) got us a datalog that set up today's fated run.
next year will see further oil pump mods maybe including needle bearings or bushings, at least. possibly ditch the 8 injectors for a single set of the 2200s and back to pauter rods, too. otherwise the setup will remain much the same. oh yea, we'll also have our own adjustable solid lifters utilizing motorcyle cam shims for a cheap but very accurate alternative to what we've seen out there. i may do a build thread on the engine with pics.
a couple thank yous: TRE's trans is still PERFCT with no issues what so ever!
And Shawn Church put a tune in the car that made it possible for me to sort out our issues
and run hard. Best/only tuner i trust to work on my own cars (and i'm a damn good
tuner myself).
long drive home in the am so i'm out of here.......
first day shake down runs with some great data logging information got us ready for a record run today on the 3 mile course. today's run found ron at 212mph at less than 1.25 miles into the run; he had gained 33mph in the last 10 seconds with about 25-30 seconds to go when KABOOOOM! lost the #2 rod (aluminum) which was suspect when we checked the bearings last week (rod bolts were hard thread out, hard thread in). everything on the run was perfect: 49psi boost, 1550egt, 11.3a/f, 197F coolant, 160F air inlet temps (not bad considering 492F turbo discharge temp!). only issue was that our new trick-wazu alternator died at high rpm giving us only 11.5V; stock mitsu with less than half the amperage rating was better than that. no tear down report on the engine yet, but i'm not optimistic that much is salvagable. driver's axle is done, too (DSS).
i don't think we'll run aluminum rods again for this type of racing. it is impossible to tell for sure when they are about to go, and we put a whole season worth of drag racing type revs on ours at every meet. doesn't help that we were running 10Krpm shift points today.
Biglady112: you make this fun for me /ubbthreads/images/graemlins/smile.gif i love to get ron (car's 75yo owner/driver)riled up about losing the record! friendly competition is the best part of land speed racing to me; most competitors will lend their last spark plug to the guy running on their own record and give him/her a sincere congrat when they beat him. keep working on it; that record is close to within your reach. now that said, since the F motor is gone we will be back in G next year, but maybe as a front wheel drive so that other classess will be open to us.
someone here noticed that our dyno graph was pathetic in the spool up department (they were much nicer in describing it). that was the result of taking 10 cam degrees of overlap out to diagnose a misfire, then before we could finish our tuning session our oil pump (2.5 seasons old) gave it up and started leaking a scary amount. with the overlap back in we generally have full boost and the corresponding power almost 2krpm sooner. in fact, the car couldn't even pull 200mph with that graph's power curve (run one at WFs was disappointing /ubbthreads/images/graemlins/smile.gif ). run two with the overlap back in (214mph) got us a datalog that set up today's fated run.
next year will see further oil pump mods maybe including needle bearings or bushings, at least. possibly ditch the 8 injectors for a single set of the 2200s and back to pauter rods, too. otherwise the setup will remain much the same. oh yea, we'll also have our own adjustable solid lifters utilizing motorcyle cam shims for a cheap but very accurate alternative to what we've seen out there. i may do a build thread on the engine with pics.
a couple thank yous: TRE's trans is still PERFCT with no issues what so ever!
And Shawn Church put a tune in the car that made it possible for me to sort out our issues
and run hard. Best/only tuner i trust to work on my own cars (and i'm a damn good
tuner myself).
long drive home in the am so i'm out of here.......
