So I dyno'ed, now I have a ticking noise...

SpectorV

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I would check the local laws... some places have you sign such things so they can keep you from even trying to determine if its a worthless peice of paper or something that will stand up in court.

How can you proove that they did it since it didnt happen there?
 

Mr. Freeze

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Any high speed run will burn these motors up. 6th gear pull=high speed run and added stress to the cylinder walls getting to hot and scorned. Operator fault i believe was the factor but with automobiles its a never ending argument. Shzt happens and think the operator did a honest mistake.
 
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Boostaddict5.0

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OMG people are you NOT listening...THE SHOP DID'NT TUNE THE CAR IT WAS JUST A HORSEPOWER RUN! Now that being said do you know if it "WAS" a horsepower run or in simulation mode? The dyno operator has a pre-set RPM/speed in horsepower runs he sets it at ex; 55-120mph or 2000-6000rpm and if you go over that speed/rpm the dyno will stop testing and start to slow down. Now if the operator just keep on jamming it after the dyno brake is on that could be a problem. Believe me if the dyno was setup for truck load you would know it...that car would of had a hard time even accelerating.
 

mattmoto441

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Well i feel for you dude i have had the same thing with a local dyno IT Also was a mustang dyno and had the inursia set at 100% with from what i was told by mustang was like putting 10,000 Lbs of dead wt and hooking a to my car and trying to pull it down the street. So in short my car was doing a burnout on the rollers in 4th and by then end of the run my car was also ticking (it made 362rwhp 679rwtq). Took the car to the dealer and found that the motor had melted the coating off the #7 piston. It cost me $2500 for a hole new motor. They denied any and all liability and said tuff luck and i didn't sign anything. IM am still fighting them on this issue to this day:cuss:

Age auto performance Dyno in north Platte NE are SOB's and should Burn in a fire


NOW i take my car 3.5hrs to my new best tuner Dynosport.com just to keep my car safe

i hope you get yours all sorted out
 
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The_Wretched

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Im with the guys here. Drive far as hell if necessary. When it comes to modding... if you want it done right... you're gonna pay. That's the bottom line. There are plenty of shops... but goods shops are 1 in a million.
 

Kreep306

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WO............6th gear pull hope you get things worked out. My friend drove his white cobra in 6th gear for a couple of minutes and after that it had a tick. It turned out to be a piston.
 

BuBbABFP

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Here at our dyno, we the drivers get to sit in the drivers seat and do your own dyno pull. My buddy has an 04 pulley etc...and he did the same error and had it in 6th and peaked out the speedometer but nothing happened to his car. Best luck to you mang and getting your car fixed.
 

NinoAvila

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Thanks...

I called the shop to talk to the owner to let him know what happened to me and while he was nice, it was clear I was going to get no assistance from him other than if I wanted him to order my parts for me (at his cost) which for him, means nothing out of his pocket.

He also went on to state that while the operator did do a pull in 6th, "he didn't do a full pull, he lifted before the run finished". What I don't think he realized is that as soon as the rollers stopped, he proceeded with a 4th gear pull.

Either way, I figured since I was the one who orchestrated the dyno day, brought him business and was very straight forward about everything that he'd at least toss me a bone. Nada.

I went in for a simple dyno-pull. No tuning involved. I *assumed* these guys knew what they were doing. That was *MY* mistake.

I'm trying to work a deal for some help through a local place. I hope it comes through.

Even then, it's still 2400 that I didn't have to spend if someone knew what they were doing on the dyno. It's an expensive mistake I WILL NOT be repeating.

-N
 
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HISSMAN

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KingJay said:
Why would they do a sixth gear pull ? !

Because they wanted to blow it up? 6th gear at WOT, especially in the lower RPM's = too much load and bad things are likely to happen.
 

HISSMAN

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baloo said:
I feel for you and I don't want sound overly negative, but if an engine can't handle 20 sec at wide open throttle, I wouldn't necessarily blame the dyno operator. In terms of load and duration the difference between a 4th gear and a 6th gear pull is fairly small, and if those extra seconds cause engine damage, chances are it was running on borrowed time to begin with.

.

That is completely wrong. There is a huge difference in engine load between 4th and 6th gear. Go out in a cobra and pull from 3K rpms in 4th gear, then pul from 3K rpms in 6th gear and tell me what you think.

-Jeff
 

Nicky Pass

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NinoAvila said:
Thanks...

I called the shop to talk to the owner to let him know what happened to me and while he was nice, it was clear I was going to get no assistance from him other than if I wanted him to order my parts for me (at his cost) which for him, means nothing out of his pocket.

He also went on to state that while the operator did do a pull in 6th, "he didn't do a full pull, he lifted before the run finished". What I don't think he realized is that as soon as the rollers stopped, he proceeded with a 4th gear pull.

Either way, I figured since I was the one who orchestrated the dyno day, brought him business and was very straight forward about everything that he'd at least toss me a bone. Nada.

I went in for a simple dyno-pull. No tuning involved. I *assumed* these guys knew what they were doing. That was *MY* mistake.

I'm trying to work a deal for some help through a local place. I hope it comes through.

Even then, it's still 2400 that I didn't have to spend if someone knew what they were doing on the dyno. It's an expensive mistake I WILL NOT be repeating.

-N

Thats some bullsh*t right there. If the shop hired people that knew what they were doing...there wouldn't be a problem!
 

baloo

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HISSMAN said:
That is completely wrong. There is a huge difference in engine load between 4th and 6th gear. Go out in a cobra and pull from 3K rpms in 4th gear, then pul from 3K rpms in 6th gear and tell me what you think.

-Jeff

Sure there's a difference, after all 6th is 59% longer than 4th, but it's still less load than using 6th on the street because there's no aerodynamic drag. In other words, using 6th on that particular dyno produces the same load as using 4th on a dyno with 59% more inertia. Sure, putting it in 6th is not how you would expect a car to by dyno'd, but imho building an engine that blows up after a few seconds at less than 100% load is a bigger mistake.
 

HISSMAN

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baloo said:
Sure there's a difference, after all 6th is 59% longer than 4th, but it's still less load than using 6th on the street because there's no aerodynamic drag. In other words, using 6th on that particular dyno produces the same load as using 4th on a dyno with 59% more inertia. Sure, putting it in 6th is not how you would expect a car to by dyno'd, but imho building an engine that blows up after a few seconds at less than 100% load is a bigger mistake.

The problem is that this was done on an eddy current Mustang dyno that produces the same loads that you would see on a highway (ie drag, etc, etc.)

-Jeff
 

NinoAvila

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*update:

Cliffnotes:
The dyno operator had done a partial (up to 140mph) pull in my 6th gear then followed up with a 4th gear pull. Now I have a fried a piston or it's is coating anyway. Everyone I talked to (many cobra owners who have had the same problem or dyno-tuners thinks that THIS is what caused the failure).

I called Edgar down at exeSSive to let him know about my new engine tick and he told me that he was sorry it happened but that I was running lean (12.1-12.4 = overly lean?) and THAT is what likely caused the failure. He noted that the 6th gear pull was partial, not all the way. I don't think he realized that the operator not only did the partial 6th gear pull but he followed by a 4th gear pull (with no cool-down time). He offered to get parts at his cost, but that was it. He stated that with my air/fuel that it could have happened in 4th.

The dyno operator was having all sorts of issues trying to get my car and Darrell's car in the right gear. He'd get to third and gear down to 2nd or shift to 6th....he was just unsure.

I'm not bad-mouthing them. I'm simply stating the facts - facts that everyone there that day observed. My car had to be re-strapped because a pull was almost done with my passenger rear tire less than an inch away from the end of the rollers (which *I* had to point out), the operator had to plug into my ODB port (where my tuner goes for data-logging) to get an RPM reading instead of the coil wire. He also had trouble getting the car in the right gear for the pull. When he did pull, instead of getting it to high RPM as soon as possible, he'd gradually let it just climb (generates A LOT of heat).

Ask any legitimate dyno operator who tunes cobras and they'll tell you how bad a 6th gear pull under 15lbs of boost is (even if it's a partial pull). Then, couple that with a back-to-back 4th gear pull....that's why you see smoke.

FYI: Here's the run where i had to point out that the car was almost off the rollers: CLICK HERE

I don't know what to believe. All I know is that I'm out a serious chunk of change because someone didn't know where 4th gear was and didn't bother to ask.

-N
 
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HISSMAN

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If the guy can't tell the difference between 6th gear and 4th gear he needs to start riding a bicycle. And I have never missed 4th and went into 6th. I am not sure how he made that possible.
 

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