Single Turbo RX-7's Questions about all aspects of single turbo setups.

GT40R dyno sheet, finally

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Old 07-10-04, 11:06 AM
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Didn't someone on here pull 430rwhp out of the 35r at 15psi or so... Nocab I think... So wouldn't it be possible to see 450rwhp @ 15psi outta the 40rs...

Zach... thanks for the pics your engine bay is very nice.

Can you send the pics of the TPS and CAT(Crank Angle Trigger) as well... And do you take paypal

-Edan

Thanks for posting your dyno. And not bad for tunning yourself... I would probably blow my engine up...
Old 07-10-04, 12:57 PM
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e-mail be the graphs at ddearborn@spymac.com
I'll host them for you.
Old 07-10-04, 01:27 PM
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Originally posted by RICE RACING
Based on your 12psi run you should be over 460rwhp @ 19psi ??? Does it go real rich or pull out lots of timing ?

Oh and 490+ at 22psi based on the 12psi run. Were you boys doing some major mixture changes or playing with timing ? Cause some of the differences in power (both up and down) are not corresponding with the changes in boost pressure. What power is that turbo good for on a 13B rotary ?
Running a almost identically sized T78 with a 40R comp wheel Jason put down a little over 500 at 20lbs, that is a different dyno and people have questioned the way he chose to calibrate it, but that's their opinion, and even if it was off by say 10% it would equal right around the 460 number as well. I figured the turbo should be good for the upper range of 400whp@around 20psi it does seem to drop of a little up top, I'm sure a little fiddling here and there will net some increases. 367whp@12psi is not too shaby

Last edited by Zero R; 07-10-04 at 01:30 PM.
Old 07-10-04, 03:22 PM
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Originally posted by Zero R
Running a almost identically sized T78 with a 40R comp wheel Jason put down a little over 500 at 20lbs, that is a different dyno and people have questioned the way he chose to calibrate it, but that's their opinion, and even if it was off by say 10% it would equal right around the 460 number as well. I figured the turbo should be good for the upper range of 400whp@around 20psi it does seem to drop of a little up top, I'm sure a little fiddling here and there will net some increases. 367whp@12psi is not too shaby
It sounds like you took the words right out of Dave at KDR's mouth. He showed me other dyno runs for comparisons.
Old 07-10-04, 03:23 PM
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Wargasm is going to host the sheet and my timing map. You'll see my timing on a goofed up spreadsheet. Air fuel ratios are on the bottom of the dyno sheet.

I know giving this information away is like handing your girlfriend to your buddy to have, but hey, since I tuned myself I would like to have some input from you guys.


Last edited by zkeller; 07-10-04 at 03:26 PM.
Old 07-10-04, 03:37 PM
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Just so it's clear I'm not bashing Jason or his dyno, just more or less agreeing with Rice it should be closer to the 460 mark.
Old 07-10-04, 03:46 PM
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Originally posted by zkeller
It sounds like you took the words right out of Dave at KDR's mouth. He showed me other dyno runs for comparisons.
Nor was I. We did not even talk about any numbers other than what he had on his dyno PC.
Old 07-10-04, 04:00 PM
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nah I wasn't thinking you were when I went back to reread the thread and see what you posted I figured it could be taken that way, I was just merely saying the two would be around where rice was saying and that's all, my feelings on dyno's are simple as long as they are calibrated correctly and settings are correct, what you pull is what you get. All this needs to be corrected for this altitude or this state is garbage to me, I know the why and I know the how, where my problem with it is simple I live up in denver and pull X# but corrected it would be Y#, the problem is I don't live where Y is, and maybe just maybe on Tuesday Z is a 110degress. So if I lived there my car is dynoing less also on that day, and truth of it is I will be making less on that day.
Old 07-10-04, 04:34 PM
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Originally posted by modrx7
Didn't someone on here pull 430rwhp out of the 35r at 15psi or so... Nocab I think... So wouldn't it be possible to see 450rwhp @ 15psi outta the 40rs...

Zach... thanks for the pics your engine bay is very nice.

Can you send the pics of the TPS and CAT(Crank Angle Trigger) as well... And do you take paypal

-Edan

Thanks for posting your dyno. And not bad for tunning yourself... I would probably blow my engine up...
I did 430 at 16 and 470 at 20 when I had my 35/40
Old 07-10-04, 05:34 PM
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I have had many cars on my dyno (Mustang) that have since dynoed on a dynojet and put down very similar numbers, so I know its close.
With that said, Zkellers numbers are way off. I would agree with RICE RACING and say that you have alot of timing pulled out or its running to rich.

Jason
Old 07-10-04, 05:40 PM
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RSE... those are some impressive numbers... I just hope that the 40R kit can pull something like that.

It should be possible.
Old 07-10-04, 05:57 PM
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Originally posted by Jason
I have had many cars on my dyno (Mustang) that have since dynoed on a dynojet and put down very similar numbers, so I know its close.
With that said, Zkellers numbers are way off. I would agree with RICE RACING and say that you have alot of timing pulled out or its running to rich.

Jason
As soon as Wargasm gets the sheet and the timing map up, fire away. By the way, the air fuel readings on the dyno matched my meter in the car.
Old 07-10-04, 05:58 PM
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Rice Racing. You looked at my timing maps, remember?
Old 07-10-04, 06:10 PM
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Where in PA are you?

Jason
Old 07-10-04, 08:50 PM
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Here are the dyno and the ignition timing....

http://www.zeroglabs.com/rx7/zkeller.htm

Brian
Old 07-10-04, 09:16 PM
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Looking at the timing at 15 psi (load 200 row), it looks fairly reasonable to me. I run even less timing than that...

Based on the info I have from the dyno sheet, I think that maybe something is pulling a lot of timing. Do you have a log of the actual timing used during the run?

B
Old 07-10-04, 09:16 PM
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Originally posted by zkeller
Rice Racing. You looked at my timing maps, remember?
Sorry, I remember now, there is nothing in your timing map that would cause such a big difference in measured power with those boost increments.

Just need to nail down if the 360 odd rwhp was an "freak" reading @ 12psi to get a relationship of the other figures. If there is a trend there then it seems like there is some restriction going on somwhere that is not giving yo a linear rise with increasing boost pressure ??

I would not use any more timing at 230kpa even on 100 !
Old 07-10-04, 09:23 PM
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Your .dat file shows 9.5 deg timing at full load ? Thats a little low for 100oct with that split.
Old 07-10-04, 10:12 PM
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Must hear more. keep it coming.
kris
Old 07-10-04, 10:37 PM
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preety good results
Old 07-10-04, 11:48 PM
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Originally posted by RICE RACING
Your .dat file shows 9.5 deg timing at full load ? Thats a little low for 100oct with that split.
Oh yea, I forgot to tell you. Add 8.5 degrees to the timing on the dat file across the board. Autronics does not have a gain adjustment like Haltech and the 3rd gen has a fixed trigger. In order to get the timing zeroed out I had to negate the timing 8.5 degrees in the barametric pressure correction settings. In other words, the dat files may say 10 degrees when in reality the engine is at 18.5.

Now the timing values in the CAL file are what the engine is seeing.

Make sense?

Last edited by zkeller; 07-10-04 at 11:53 PM.
Old 07-10-04, 11:51 PM
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Originally posted by Jason
Where in PA are you?

Jason
I am in York. York is located about 50 miles North of Baltimore, Maryland.
Old 07-10-04, 11:56 PM
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Originally posted by Wargasm
Looking at the timing at 15 psi (load 200 row), it looks fairly reasonable to me. I run even less timing than that...

Based on the info I have from the dyno sheet, I think that maybe something is pulling a lot of timing. Do you have a log of the actual timing used during the run?

B
Timing looks solid through the run. I did notice on the air fuel readings that at 6500 I dip to 11.18:1 just for exactly 2 seconds, then it's back to the mid 11's. That should not cause any major problems.

Last edited by zkeller; 07-11-04 at 12:24 AM.
Old 07-11-04, 12:23 AM
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Originally posted by Poweraxel
cool Zach not that many people here in the states run that ecu but its a great unit i hear. Did you use the "Autotune" feature? where it tunes itself? Im sure a couple of more dyno runs and a little more experience you can get those power #'s up higher!

again good to see your car on road especially with over 400rwhp!
Steve, Autotune is not yet available on the rotary chip set, but is on it's way. It has what they call manual tune which works very well. You pull up a datalog in a micture table and it tells you which cells need corrected, hit enter twice, and they are corrected. Same principal as Autotune, just not on the fly.
Old 07-11-04, 06:51 AM
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Originally posted by zkeller
Oh yea, I forgot to tell you. Add 8.5 degrees to the timing on the dat file across the board. Autronics does not have a gain adjustment like Haltech and the 3rd gen has a fixed trigger. In order to get the timing zeroed out I had to negate the timing 8.5 degrees in the barametric pressure correction settings. In other words, the dat files may say 10 degrees when in reality the engine is at 18.5.

Now the timing values in the CAL file are what the engine is seeing.

Make sense?
Total, thanks

I cant see any tuning fault/s you must have some other mechanical restriction in the system, be it, turbo, IC, Exhaust etc etc.

Charge temp looks good, timing is good, mixture is good..... job well done


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