I do not own a C5 yet, but am looking for info from people with experience. Is there much of a chance of hurting/destroying my motor during dyno testing? I have wanted to dyno my car for a while just to see what i have, but i am curious to the possible dangers. Any information appreciated. Given the mods in my sig, what should i be making?
Thanks!! :yesnod: :cheers:

 

You will be fine.
A better site may be http://www.camaroz28.com for your questions about your Camaro power levels.

I have no idea what you may be making.

Good luck. :cheers:


[Modified by 2000^C5, 1:20 PM 5/21/2002]

 

Dyno testing should not hurt the car ... just wait until you have a few miles on it so everything is broken in and the numbers should be a little better ... but like many will tell you ... a dyno is for "peak" numbers ... but track results are much much more important to see how powerful the car really is ...

 

I would not recommend doing a top speed run.

I did so on my 2001....the results were 11 melted and/or bent valves when the fuel shutoff did not activate
when programmed to do so (192 vs 190).

Pictures of the damage: http://members.bellatlantic.net/~aj98/engine.html

AJ
===

 

2000C5 and NewVetteLover,
On the street, I usually shift around 5200-5500(redline-5750). I have a friend('97 Z28 with similar mods) that threw a couple rods and it was diagnosed as being overrevved and oil pump failure at high RPM's. So, when i do run hard occasionally, i dont completely go to redline. This is the reasoning for my concern about dangers. Would I have to pull to redline, cause i believe peak power is made around 5200 or so RPM's?? <-on my car Thanks for the information. :yesnod: :cheers:

 

I stay away from dynos for exactly the same reasons. There are enough C5s out there with the types of modifications you have/will have, that you can estimate your results fairly closely.

Why beat the car like that? If you're a test driver or racing, fine, but "just to know for sure?"

 

Dangers?

Standing behind the car while testing (rocks).
Or in front.. ;)

 

I don't understand. Does this mean you never run your car to redline? Why do you think GM sets the redline where it is, and has a rev-limiter that keeps if from revving any higher?

 

Of course I rev it to close to red line, but I'm not standing still. The car and it's components are under dynamic load -- not just tied to rollers. Treadmill versus the track.

I don't, as a habit, rev it to redline standing in the garage.

If I do run it in the upper rpm ranges, I don't hold it there. I tend not to drive around town in first gear at 5,500 rpm.

:cheers:

 

I've watched 2 cars dyno'ed, so I'm not an expert, but it doesn't take very long for each run with the car. The engine is not held at high rpms for any length of time. The engine revs through its normal range of 2000 - 6000 or so rpms. It sounds just like the car would normally rev under load. When the car is on the dyno, its under the same load as on the road, except the front wheels don't turn and there are no bugs splattered on the front. I wouldn't hesitate to put my car on a dyno, the only reason I haven't is because I don't have any need to right now. Engines are designed run up to their redline. If your engine is healthy in the first place, there should be no danger of damage. If you run your car on a road track as I have, you know that you tend to run the engine for fairly long periods in the 4000 - 6000 range at WOT. From what I've seen, the car is designed to handle it.

- Mark

 

Dyno's dont do anything bad how and the world would they?

Doing a burnout does real damage to every component including tires ;)

I have 6 pulls on my car so far, I don't see the point of a top speed run....

 

Nope, nothing to worry about. :D

 

Another thing, you'll probably make in the 250-260rwhp range. Have the tech run it to about 5500 to 5600rpm, you won't be making more power above that.

 

There is no danger in dynoing your car-- I've run mine 9 times, and will run it 9 more-- the engine is put under no more load than it was designed to, unless you've reprogrammed the computer and upped your rev-limit.
The factory sets the rev-limiter BELOW the danger point for the given engine--you can bounce off it until you run out of gas, and won't damage anything...if you could, the General would have set the limiter lower.
It's practically a non-issue on the dyno anyhow, since you only get there once:
Here's what happens at a dyno:
Your car is rolled onto the rollers, which weigh something like 4000lbs, and it is strapped securely down at all four corners.
Then, you get the car rolling at about idle speed, the tie-downs are tightened and re-checked, and then depending on your trans, you go...with a manual, you slowly accelerate until you get to 4th gear, which is 1:1 ratio, and at about 2000-25000RPM, you floor it, and don't let off until you reach the redline. I never even hit the rev limiter, because I know what it's set to, and I let off the gas 100 below that point. There's no reason to hit it on a stock car anyway, since you've already passed your HP peak by then...
Go to the duno-- it feels good to KNOW what power you make, instead of guessing. That way, when you do go to the track, you'll better appreciate the numbers you make there, because you know what power it took to get it there :cheers:

 

Corey,
Where did you dyno your car at? Maybe when you get more mods(if ever :D), I'll follow and we can both see what we have. Did yall go out last night? If so, how was it?? Thanks.......... :seeya

 

MDL-01C5 description is exactly what I experienced when I dyno'd for my very first time. We were allowed to drive our own cars. One thing that was ommited. Turn off your Traction Control. That killed my first run and I looked like a boob. So I idled the car down put it in nuetral and turned off the T/C and AH just to be safe. Got going again but since I was new to this I rolled in my throttle as opposed to just mashing it. My numbers suck. My best of two runs was 293 RWHP and 302 RWTQ and my car had Corsa Indy's, LS6 lid and K&N filter. This works out to about a 15.5% drive train loss, about normal for a MN6. I was expecting more like 300 to 305 RWHP. But my problem is AFR's - I was way to RICH. The dyno tech said I'm losing 10 to 15 RWHP just being that rich. But that's another story altogether.

BTW I set my runs for 6100 RPM's, they have a PC monitor that flashes RED at what ever RPM you choose. You don't use your tach.

Tom
USAF Retired



[Modified by AFVETTE, 1:01 PM 5/23/2002]

 

I've dynoed a fair number of times without incident.

 

LT1pwrd'94....try Speedworks in Lewisville or LG Motorsports in Wylie....Both have dyno's and both can do whatever you want to your Chevy powered engine...

ZOOMNZ

 

I had my dyno runs at Fastech (now Speedtech), however next time I'll probably go to LG or Speedworks in Lewisville. I don't know about any more mods, but I'd be up for a few dyno runs. Drop me an e-mail.

About last night, I went, but only for a little while. There was a pretty good turnout, so nice and fast rides were out there.