Which stress does a Dyno Run put to a car?
03-26-2003, 06:23 AM
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Which stress does a Dyno Run put to a car?
I am planning to make a dyno run to my 1990 C4, but first of all I would like to know if this runs can stress some parts of the car like, clutch, differentials, flywheel...
ALEX
ALEX
03-26-2003, 09:28 AM
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The only downer about a chassis dyno run is that you do not have much (if any) engine cooling for an older 911 - as the car sits static on the machine.
The rest of the run is no different then driving it down the road.
Drive on it like you normally drive (which may be or may not be tough on the clutch, differential or flywheel anyhow <img border="0" title="" alt="[Wink]" src="wink.gif" /> )
The rest of the run is no different then driving it down the road.
Drive on it like you normally drive (which may be or may not be tough on the clutch, differential or flywheel anyhow <img border="0" title="" alt="[Wink]" src="wink.gif" /> )
03-26-2003, 10:18 AM
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Maybe I'm kicking in an open door here, but I assume that you need a 4-wheel dyno to do this with a C4?
Otherwise you'd probably break the drivetrain in half. You can't tow a C4 with one axle off the ground, IIRC. Putting it on a 2-wheel dyno would have a similar effect.
Cheers,
JW
Otherwise you'd probably break the drivetrain in half. You can't tow a C4 with one axle off the ground, IIRC. Putting it on a 2-wheel dyno would have a similar effect.
Cheers,
JW
03-26-2003, 12:37 PM
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I have the same question JW raised: do you have access to a dyno for an AWD car? I remember seeing somewhere in the local PCA newsletter that there might be one in all of New England, for example, so I don't think they're common. Love to know how that works.
Mike
'91 C4
Boston
Mike
'91 C4
Boston
03-26-2003, 02:06 PM
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I bought the GTechPro Competition (www.gtechpro.com) and love the thing. If you are looking for an easier way to get HP and Torque ideas about your car (as well as a gazillion other measurements) then this might be the way to go for you...
Hunter (91' C4)
Hunter (91' C4)
03-26-2003, 04:17 PM
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On a 964 where is the correct location to tie the car down? I've had really bad luck with the state inspection process. I've been driving around with a failed sticker because the last inspection tech wanted to use the little metal bracket/tubes that attach the side of the rear bumper to the car as tiedown point.
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03-26-2003, 06:50 PM
#8
Curry's Auto in Sterling VA has an AWD dyno - - they occassionally have events for the PCA and BMWCCA. (The AWD Dyno has four roller built into the floor - car is tied down and huge fan placed in front directed at the oil cooler.) In fact, there is a special PCA Potomac Region Dyno for Charity Event June 7th. I bet there are still open slots for those of you interested in making the trek. See: <a href="http://www.pcapotomac.org/pca/html/public_service/dyno_for_charity.shtml" target="_blank">http://www.pcapotomac.org/pca/html/public_service/dyno_for_charity.shtml</a>
Or, you can simply make your own appointment with Curry's for a Dyno. Their site is here:
<a href="http://www.currysauto.com/" target="_blank">http://www.currysauto.com/</a>
I had my old 83SC, with SSIs and Dansk sport muffler, dynoed at Curry's - As I recall, it hit 192hp at the flywheel. I was pleased since since the engine had about 130k miles and had never been opened.
Chuck
93 C2
Or, you can simply make your own appointment with Curry's for a Dyno. Their site is here:
<a href="http://www.currysauto.com/" target="_blank">http://www.currysauto.com/</a>
I had my old 83SC, with SSIs and Dansk sport muffler, dynoed at Curry's - As I recall, it hit 192hp at the flywheel. I was pleased since since the engine had about 130k miles and had never been opened.
Chuck
93 C2
03-27-2003, 03:57 AM
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</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by Hunter Ware:
<strong>I bought the GTechPro Competition (www.gtechpro.com) and love the thing. If you are looking for an easier way to get HP and Torque ideas about your car (as well as a gazillion other measurements) then this might be the way to go for you...
Hunter (91' C4)</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Does it work??
<img border="0" alt="[cheers]" title="" src="graemlins/beerchug.gif" />
ALEX
<strong>I bought the GTechPro Competition (www.gtechpro.com) and love the thing. If you are looking for an easier way to get HP and Torque ideas about your car (as well as a gazillion other measurements) then this might be the way to go for you...
Hunter (91' C4)</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Does it work??
<img border="0" alt="[cheers]" title="" src="graemlins/beerchug.gif" />
ALEX
03-27-2003, 04:05 PM
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I haven't Dyno'd mine so I can't give you actual numbers. But it _seems_ to work great. The numbers make sense (a bit below spec'd max for a stock car, as mine is). It also will tell you stopping distance and times, and cornering G maximums. It prints nice graphes showing HP and Torque as you run through shift points and then clearly on the main power run. The data can be saved, archived, and re-examined. The promise PC software for offline analysis and remote archival real-soon-now (tm)... All in all I like mine (though I must admit to a serious weakness for gadgets)
Hunter
Hunter
03-28-2003, 01:22 AM
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Jason-
For a rear tie down, get out your little tool kit in the front bonnet and locate the tie/tow hook and install it next to the rear license plate. Triangulate the tie-downs from this point to the left and right of the car.
For a rear tie down, get out your little tool kit in the front bonnet and locate the tie/tow hook and install it next to the rear license plate. Triangulate the tie-downs from this point to the left and right of the car.
