i hurt her bad, need some advice

mobil 5w30 non synthetic

hell if it will keep me from going through this ever again, i'll friggin use royal purple in it from now on. :-(

svttech76 said:

ok timeout. before everybody goes off the deep end here.

the guy who owns the car and was there said THE DYNO OPERATOR DID NOT OVERREV THE MOTOR i think it's irresponsible to blame this dyno operator with no proof that he caused the problem..

now if this car was reved to 7k plus rpms then i would say yes he is at fault.

do we know what the air fuel ratio was at the time of the failure?? was the motor detonating???

before we throw fuel on a fire lets get facts straight.

remember the guys shop name is on the dyno sheet and that name is now on this board. so please a little proof before this shop gets blamed.

remember to tune the car they have to run it.

first thisng we have to know is the ari to fuel ratios durring both runs. and was he making adjustments on the second run when it blew.

Click to expand...

i completely agree with you. i think the guy running the shop has both a genuine love for mustangs and years of experience working on them. i'm a suspicious person by nature.....my car DIED on his dyno and i still want him to build the motor for it. i don't suspect the guy, his shop or his methods. he had other employees monitoring readings outside of the vehicle to make sure that nobody dynoed unsafely. and when my boyfriend (yes, i'm a girl...) dynoed his car, it started running lean on a 100 shot of nitrous at 5000 rpms, and it was IMMEDIATELY shut down to prevent damage to his motor.

having said that, my 1st dyno pull chart is posted on the first page of this thread. the second pull didn't get a printout, but at 6000 rpm, i was in the green on a/f....somewhere between 11.3-11.5. if anything, the car was running a bit RICH, not lean. there was no detonation, no indication that something was wrong. it just friggin happened. it was fine, and then it was going CLACKCLACKCLACKCLACKCLACK (sounds like it's near the front of the right cylinder bank.

but the guy that dynoed my car has been doing this for years. he didn't over-rev, he didn't hold 6k rpms for longer than he should've and NOBODY had any indication that it was going to happen.

it's time to lick my wounds, and look towards the future. i seek advice....i'm also wondering if anyone knows what mitchell says for r/r of both a shortblock, and a complete motor install.