areXseven

iTrader: (1)

So the Dyno doesn't read and mark HP ratio per rpm band??

SPOautos

Every dyno run I've ever seen they use the gague cluster in the car to know when to let off not the actual dyno. Normally, the dyno charts the rpms and uses that info for the HP formula and places it on the chart but normally the dyno operator goes by the cars gauge when he's driving it.

The only thing I can think of is if they were actually tuning the car and tuned it wrong. This could be from a faulty wideband or them just not knowing how to tune.

Typically the reason dyno shops make people sign a waiver is because they didnt build the car so they arent familiar with it. They dont know what parts are in it and how far it can be stressed. All they normally do it strap it down watch the gauge and put thier foot on the floor.

Now if he was having them tune the car thats a different story all together.

I doubt its going to be a fraud thing since you have 2 different venders. If I was the dyno operator there is no way I'd trash someones engine to give another shop extra business. Well, I wouldnt do it at all for any reason, but you know what I'm saying lol

I still think the problems lies more with whoever installed and took responsibility for dialing in the boost controller.

But to be honest if you talk to the real old timers around here most of them are going to tell you this "you play you pay". The reason is because they all have blown engines for no particular reason and they all know how easy it is to pop a modified rx7. If you play the game long enough you are going to get burned, thats all there is to it. It doesnt matter what parts you put on it, who is building it, who is tuning it, ect ect ect. Its going to happen.

Actually, what could have happend is the mechanic set the controller up and dialed it in on the street. Then when they put the car on the dyno the load was different and it caused the boost to build faster and get a spike before settleing down to where it was supposed to be.

Stephen

jpandes

This story really sucks! I feel for you AustinFD. If your mechanic built your engine and tuned your car AND took it to be dynoed, why is any of this your fault? You weren't even there! Your mechanic should be held responsible. He should stand behind his work.

BTW, I have been running a manual boost controller for 3+ years and haven't had any issues with it.

r0t0r-rooter

Austin, this is what I understand, so plz correct me if I'm wrong:

You had the engine rebuilt ~ 6 - 9 months ago.
You have been using a PFC basemap since, @ 12 - 15 lbs.
You sold the car to someone else.
That other person wanted to dynotune the PFC @ Autolink (a supposed authorized Apex tuner)
Since the engine blew, the store owner offered a rebuild, charging parts only (totaling $1200)
The ceramic seals are offered, but they are not $1200 by themselves.

If I'm wrong on any of these points, plz correct me.

Narfle

iTrader: (16)

theres a lot of this floating around the forum. civil legal action is slooooow. it was probably tuned on the street in 3rd gear and tune don the dyno in fourth. hence the overboost. sue them, i suggest it, but your legal expenses will equal your new engine. and seriously, its not their problem. unless you can proove negligence, which would be very very hard in this case, its not thier worry. your car, your motor, your loss, your problem. if they refuse to admit to anythign then they will walk. i swear to god that it doesnt matter if you signed anything. they are the ones who have to acknowledge liability, not you. you have to make them fully aware of their responsibility for htem to be negligent. i dont think you can prove that it was their fault the engine popped. they could very easily claim it was something you did to it or say how fickle the engine is or simply claim that engines blow. this happens with rx7's and i feel for you i really do. but youre just spinning your wheels.

r0t0r-rooter

As a side note, I remember Zerobanger having his engine blow on the dyno during a group tuning event in NorCal. You might want to contact him for any more advice.

rynberg

It wasn't a tuning event, just a group dyno day. No one was responsible, just the motor's time to go -- 50k on a Mazda rebuild running all the bolt-ons with dozens of drag strip passes.

This sounds like a completely different situation. Did the mechanic who was tuning it build the motor?

jpandes

If this was the case(above). Then that would be different story.
If they are offering to rebuild it for the cost of parts only, that's a good deal.

nickpapagiorgio

Did he?? Where was that in his post??

areXseven

iTrader: (1)

I do not require them!,...Am I right??!!

nickpapagiorgio

Huh??

r0t0r-rooter

My bad.... what I remember most was his riveting speech about his rebuild & upgrade plan.


No, the dynoshop ppl were not the ones who built the motor.


Austin, is it also true that your friend's bill was prior to the dyno day, for fuel mods & labor, and NOT for the attempted tuning?

If I'm wrong I apologize, & please correct me publicly. If I'm right, then shame on you for distorting what happened for the sake of forum approval/sympathy

areXseven

iTrader: (1)

A couple of lines from the movie Vegas Vacation spoken by the character "Nick Papagiorgio"!

austinsFD

pretty much

austinsFD

to some of the random questions, the final map was dynoed at 390hp and with 5 psi 160hp and at 10psi dyno it was around 280hp

and hopfully i'll be getting the dyno sheet today.


btw: the machanic said he tryed to video tape it but the video camera battery died.....sure hehe

also is it safe for the dyno place to be redlining the engine e.g. 8k rpms when tuning it?

dubulup

so you sold the car, and what???????? how are you involved if you sold the car? This is confusing

Kahren

iTrader: (13)

the motors go at any time, when they are old and worn out, it doesnt even have to spike. you shoudl have insisted atelst watching the dyno runs if you were so concerned.

MrFuzzy

iTrader: (1)

For some reason i dont think were getting the whole story here, either way $1200 isnt bad for a stronger engine. This could have happened anytime even after it was tuned on the freeway on the way home from the movies. Legal action is much more than $1200 and is it worth your time and effort the case could be a fine line hard to sway with 2 partys involved. Why are you involved if you sold the car?

Jason

iTrader: (5)

I have been to court over this exact thing and can say dont waste your time because the odds are you are not going to win. I testified in a case where the tuner and a customer were out tuning and the engine blew. No waiver was signed and the guy tuning won the case based on the fact that there were to many variables that could have caused the engine to pop. I told/explained to the judge that I thought it was based on poor tuning but they didnt go for it.
There are probably 20 other reasons a motor could let go on a dyno other than it being the tuning. You might have more of a case if the same shop had just put in a new motor and did all the work to it. You could then make a case that it was an issue with the motor or something else.

Jason

austinsFD

i'am speaking for my best friend that bought the car becuase he dosn't know as much about rotories as me.

austinsFD

he told me i couldn't go, so i didn't wanna start a fight, i said as long as he video tapes it,its fine but he said the battery died. so i started wondering

austinsFD

becuase hes my best friend and im helping him out.

austinsFD

the engine had less than 10k on it. And they did "all" of the work.

nickpapagiorgio

I get it now!

r0t0r-rooter

Yes, over a period of 6 - 9 months, running 15 lbs of boost on the stock twins, with only a pfc base map.....


Once again, this was a slow, gradual process, not a package deal.
Austin, please stop trying to play Ally McBeal!