Very bad dyno experience
Drifting
Joined: Jan 2012
Posts: 1,548
Likes: 15
From: Paris TN
Really???? We own a marina, if a customer wanted to follow every single moment we are working on their boats/engines, it would be the last time. Honesty goes two ways, if you don't trust anyone, then do it yourself. Go ahead and buy thousands of dollars of equipment and tools every year. Plan on stocking 10k to 20k of parts on hand also. How would you like someone watching every single thing you do, and also commenting on every single item. Oh, also second guessing what ever is wrong. Geeeez, Al
When they dynoed my car, I cringed at the seemingly high RPM they run them to, but the computer says it was only to red line...I realize it's the same speed I run at the drag strip. It's hard on your car. Some dyno shops make you sign a no fault release before doing the work.
Unfortunately, unless your shop is particularly generous, I think you just bought a rebuild at your expense.
Racer
Joined: Feb 2013
Posts: 386
Likes: 3
From: Clifton Virginia
I took my vette to get a Dyno tune at Hesco in Birmingham to optimize the performance. After the initial dyno test he came back with the graph showing 290 HP and said it was running rich. So then he spent several hours tuning and came back showing 319 HP but the engine had a knocking noise. He said this was due to an excessive amount of oil in the engine causing damage. He also stated he had a hard time getting the AFR correct.
The engine was inspected and pistons #7 & #8 were dark when viewing from the bottom, cylinder #7 would not hold compression, a small piece of aluminum was on the #7 plug and the carb power valve was broken. Currently the left head is being pulled for further inspection.
How do you think Hesco should handle the cost of labor and parts?
The engine was inspected and pistons #7 & #8 were dark when viewing from the bottom, cylinder #7 would not hold compression, a small piece of aluminum was on the #7 plug and the carb power valve was broken. Currently the left head is being pulled for further inspection.
How do you think Hesco should handle the cost of labor and parts?
Racer
Joined: Oct 2003
Posts: 424
Likes: 9
From: Killeen Texas
Evidently the Dyno Shop was honest and owned up. The "too much oil" story sounded like they first tried to get out of it, trying to cover their ***, as that made no sense AT ALL. I'm glad it all worked out well.
Le Mans Master
Joined: Apr 2000
Posts: 7,562
Likes: 9
From: B'Ville NY
Cruise-In III Veteran
St. Jude Donor '05
Really???? We own a marina, if a customer wanted to follow every single moment we are working on their boats/engines, it would be the last time. Honesty goes two ways, if you don't trust anyone, then do it yourself. Go ahead and buy thousands of dollars of equipment and tools every year. Plan on stocking 10k to 20k of parts on hand also. How would you like someone watching every single thing you do, and also commenting on every single item. Oh, also second guessing what ever is wrong. Geeeez, Al
Sorry for your mishap, looking for all the HP we can get can be very $$$ sometimes.
Racer
Joined: Jan 2007
Posts: 427
Likes: 1
Great post. I read that 29 horsepower was gained - knocking noise...
I work with trust and full disclosure. If I am having an engine on the 'dyno' the operator/tuner needs to know everything. I am talking about engine dyno's not chassis dyno's.
If the operators knows everything about the cam, fuel delivery, exhaust and desired performance they can 'dial' in that motor to give ultimate performance in a lot more shorter pulls in comparison to discovering this on the 'track'.
I have heard many people 'blame' the dyno or 'dyno operator' for destroying their engine. Maybe their 'mill' was only worth a few more WOT's before it all blew to sh*t.
If there is a week spot the dyno will find it. If there is more power to be gained the dyno will find it.
No one owes anyone anything unless they engine rebuilder built it themselves and it failed on the dyno and even with that there is very few guarantees.
I do not want to paint a picture of doom here with dyno's but if you can't stand reading the results and fine print, dont bother. Dyno's will find the weakest link.
I work with trust and full disclosure. If I am having an engine on the 'dyno' the operator/tuner needs to know everything. I am talking about engine dyno's not chassis dyno's.
If the operators knows everything about the cam, fuel delivery, exhaust and desired performance they can 'dial' in that motor to give ultimate performance in a lot more shorter pulls in comparison to discovering this on the 'track'.
I have heard many people 'blame' the dyno or 'dyno operator' for destroying their engine. Maybe their 'mill' was only worth a few more WOT's before it all blew to sh*t.
If there is a week spot the dyno will find it. If there is more power to be gained the dyno will find it.
No one owes anyone anything unless they engine rebuilder built it themselves and it failed on the dyno and even with that there is very few guarantees.
I do not want to paint a picture of doom here with dyno's but if you can't stand reading the results and fine print, dont bother. Dyno's will find the weakest link.
Safety Car
Joined: Jan 2009
Posts: 4,000
Likes: 299
From: New York
When I read he was getting 15 to 1 a/f ratio I was going to pipe in way way to lean for a wot pull ,,, But in the end the dyno guy admitted it himself .. I am glad it is all going to work out for the OP
Race Director
Joined: Apr 2007
Posts: 11,152
Likes: 890
From: South Western Ontario
Got the vette back yesterday. The mechanic admitted that because he was unfamilar with the AED modfications that are made to the Holley carb he inadvertently leaned it out to much causing the damage. Based on your feedback I feel we were able to reach an agreement on cost that we both felt was fair. Thanks again!
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
good for you hope the next experience is better
Agree 100%. Stopping in to peek and chat is one thing but who needs someone babysitting them? If they know better they should be doing it themselves.
on dynos seems like a lot more load than if you were on the street still get nervouse about putting mine on one. That and if the dipwad overreved it or didnt let off god forbid it was pinging etc. Best just to skip it and hit the track.
f a customer wanted to follow every single moment we are working on their boats/engines, it would be the last time.
on dynos seems like a lot more load than if you were on the street still get nervouse about putting mine on one. That and if the dipwad overreved it or didnt let off god forbid it was pinging etc. Best just to skip it and hit the track.
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