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Dyno Results! by gwg1995
Started on: 04-15-2017 05:11 PM
Replies: 18 (644 views)
Last post by: cvxjet on 04-18-2017 11:30 PM
gwg1995
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Report this Post04-15-2017 05:11 PM Click Here to See the Profile for gwg1995Click Here to Email gwg1995Send a Private Message to gwg1995Edit/Delete MessageReply w/QuoteDirect Link to This Post
I put my 87 GT 5-Speed on the dyno today. Any guesses as to what it made? Only power related modification is a Cat Delete.

Horsepower-???
Torque-???
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pmbrunelle
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Report this Post04-15-2017 05:45 PM Click Here to See the Profile for pmbrunelleClick Here to Email pmbrunelleSend a Private Message to pmbrunelleEdit/Delete MessageReply w/QuoteDirect Link to This Post
115 hp, 150 lb*ft.

Why did you do the dyno? Curiosity?
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Easy8
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Report this Post04-15-2017 09:59 PM Click Here to See the Profile for Easy8Send a Private Message to Easy8Edit/Delete MessageReply w/QuoteDirect Link to This Post
130 hp, 165 Ft*LB

Does the winner get a free dyno run (price is right rules) or at least a free doughnut?
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gwg1995
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Report this Post04-15-2017 10:56 PM Click Here to See the Profile for gwg1995Click Here to Email gwg1995Send a Private Message to gwg1995Edit/Delete MessageReply w/QuoteDirect Link to This Post
I Dyno'd my car because my car club rented a mobile dyno and there was an open spot. The club didn't believe that my car was as anemic as it was. It only cost me $25 which is at least 1/4 the cost of a typical dyno session. I was interested to see the effect that 30 years had on the car. I'll release the results as well as a video of the dyno pull's tomorrow. Post up your predictions!

Winner gets a Car Club of Virginia Tech Sticker!
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USMUCL
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Report this Post04-15-2017 11:00 PM Click Here to See the Profile for USMUCLSend a Private Message to USMUCLEdit/Delete MessageReply w/QuoteDirect Link to This Post
110 hp and 135 ft/lbs
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tshark
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Report this Post04-16-2017 01:14 PM Click Here to See the Profile for tsharkSend a Private Message to tsharkEdit/Delete MessageReply w/QuoteDirect Link to This Post
105HP, 130 ft/lbs
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jjd2296
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Report this Post04-16-2017 02:40 PM Click Here to See the Profile for jjd2296Send a Private Message to jjd2296Edit/Delete MessageReply w/QuoteDirect Link to This Post
150hp and 165torque. Where's the answer???
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gwg1995
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Report this Post04-17-2017 01:10 PM Click Here to See the Profile for gwg1995Click Here to Email gwg1995Send a Private Message to gwg1995Edit/Delete MessageReply w/QuoteDirect Link to This Post
Well here are the results! 113HP and 140Tq! Video to come later.

USMUCL had the smallest accumulative distance from the results so PM me your name and address if you'd like a CCVT Sticker!

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pmbrunelle
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Report this Post04-17-2017 04:15 PM Click Here to See the Profile for pmbrunelleClick Here to Email pmbrunelleSend a Private Message to pmbrunelleEdit/Delete MessageReply w/QuoteDirect Link to This Post
Doesn't seem too anemic to me (for a Fiero engine)!

People think that stock Fieros don't breathe, and should therefore be short-shifted.

This dyno result shows otherwise.

Based on this dyno chart, with Getrag ratios, the following shift points maximize power to the ground:

1 -> 2 shift
5900 RPM

2 -> 3 shift
5600 RPM

3 -> 4 shift
5600 RPM

4 -> 5 shift
5200 RPM
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MadProfessor8138
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Report this Post04-17-2017 08:24 PM Click Here to See the Profile for MadProfessor8138Click Here to Email MadProfessor8138Send a Private Message to MadProfessor8138Edit/Delete MessageReply w/QuoteDirect Link to This Post
Not meaning to hijack the thread,I apologize,but I would like to comment on an observation made by pmbrunelle.....
I constantly hear from people that the 2.8 with 4 speed should be short shifted and thought they were right....my engine would cut out anytime I got near red line on the tach.
Recently,I had a distributor issue that forced me to replace it with a new distributor with the updated electronics....it was much cheaper than rebuilding the old distributor.
With the new distributor....this engine will pull WELL INTO the red line and it will keep pulling until I decide to shift.
Why everyone says that the 2.8 doesn't breath is beyond me...
I know there are various things that can be done to boost the engine but it was never intended to be a high output engine anyways.......they run pretty good in stock form really.
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gwg1995
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Report this Post04-17-2017 10:10 PM Click Here to See the Profile for gwg1995Click Here to Email gwg1995Send a Private Message to gwg1995Edit/Delete MessageReply w/QuoteDirect Link to This Post
Here is the Video!

[This message has been edited by gwg1995 (edited 04-17-2017).]

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liv4God
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Report this Post04-18-2017 02:17 AM Click Here to See the Profile for liv4GodSend a Private Message to liv4GodEdit/Delete MessageReply w/QuoteDirect Link to This Post
Beautiful Fiero and sounds good too!
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ron768
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Report this Post04-18-2017 10:03 AM Click Here to See the Profile for ron768Click Here to Email ron768Send a Private Message to ron768Edit/Delete MessageReply w/QuoteDirect Link to This Post
Your run shows that the dyno results from the 80's were right on the numbers. Rated at 140 hp and 170 tq, at the wheels 110 hp and 140 tq.
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lou_dias
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Report this Post04-18-2017 11:18 AM Click Here to See the Profile for lou_diasClick Here to Email lou_diasSend a Private Message to lou_diasEdit/Delete MessageReply w/QuoteDirect Link to This Post
Distributors have improved since the stock design. There's actually a new[er] design. So yes, with a proper coil and newer distributor, stock Fieros can make better power over 5000 rpm..
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pmbrunelle
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Report this Post04-18-2017 12:16 PM Click Here to See the Profile for pmbrunelleClick Here to Email pmbrunelleSend a Private Message to pmbrunelleEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by lou_dias:

Distributors have improved since the stock design. There's actually a new[er] design. So yes, with a proper coil and newer distributor, stock Fieros can make better power over 5000 rpm..


I don't see this, an ignition system either works, or it doesn't.

If the engine is not misfiring, then the ignition system is 100% doing its job, right?

Are you asserting that the stock HEI misfired above 5000 RPM?
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lou_dias
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Report this Post04-18-2017 02:57 PM Click Here to See the Profile for lou_diasClick Here to Email lou_diasSend a Private Message to lou_diasEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by pmbrunelle:
I don't see this, an ignition system either works, or it doesn't.

If the engine is not misfiring, then the ignition system is 100% doing its job, right?

Are you asserting that the stock HEI misfired above 5000 RPM?

http://www.fiero.nl/forum/Forum2/HTML/128178.html
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lou_dias
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Report this Post04-18-2017 04:27 PM Click Here to See the Profile for lou_diasClick Here to Email lou_diasSend a Private Message to lou_diasEdit/Delete MessageReply w/QuoteDirect Link to This Post
Also the stock A/F ratio drops to 11:1 in the time it reaches the post-5000rpm range. A tune on even a stock motor would net more power from 3000rpm and up...
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gwg1995
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Report this Post04-18-2017 11:20 PM Click Here to See the Profile for gwg1995Click Here to Email gwg1995Send a Private Message to gwg1995Edit/Delete MessageReply w/QuoteDirect Link to This Post
Thank you liv4God! I'm happy with how the car has turned out since I bought it last may in near stock form.

To shed some light on the distributor subject, I do have a newer style distributor(the one mentioned in the thread above). I also have wires, plugs, dist cap, rotor, and MSD coil with less than ~5,000 miles on them. That being said, I do not think that they provide any performance benefits. I do however think that they provide reliability benefits.

lou_dias, I am interested in tuning the car above the ~3,000 RPM range. Has there been proven results from a tune? I know there are the prom chips from Hypertech but I've heard that they do not actually increase power.

I've considered giving the car more timing and running it on premium but haven't had the time to fiddle with it.

PS- The other people that dyno'd that day complained of lower than average dyno results. The dyno did not compensate for the elevation. I'm still going to stick with 113hp and 140tq when I mention the numbers that the car made because that is all that I have proof of. A supercharged BMW registered 480hp on the day of but when elevation corrected, it was claimed to make 514hp.
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cvxjet
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Report this Post04-18-2017 11:30 PM Click Here to See the Profile for cvxjetClick Here to Email cvxjetSend a Private Message to cvxjetEdit/Delete MessageReply w/QuoteDirect Link to This Post
One thing to remember with Super or turbo charged engines is they can, depending on sensor and computer capability, compensate for altitude...Even mechanical setups can compensate.

And that is a good looking Fiero.
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