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My Dyno Sheet NON-SEQ 10psi & 13psi

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Old 07-18-02, 02:30 PM
  #51  
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Originally posted by Dont_Be_A_Rikki
If it was not for PFS I would not have what I have today for that I am thankfull

-Rikki
Perhaps you should add that line to your sig because you end just about every post with it. Just an observation

--Rich
Old 07-18-02, 02:34 PM
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Originally posted by Tim Benton
I plan on going to the dyno again tonight, to tune in the 99 spec turbos I just installed, nothing else. My last run at roughly 13.2 psi netter 334 rwhp, every mod possible except ported motor. I'll post the number later tonight when I scan it in. I'll have both runs, tonights and my previous best, on the same graph. I just want to see the difference, if any the 99 spec turbo make at the same boost level.

Tim
Tim,

Did those turbos have a "break in" procedure? I always wondering about it. I figured first time you spun them up they were set.

Interest in your curves...dyno curves.
Old 07-18-02, 02:57 PM
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I've never heard of turbos with a break in procedure, other than warming up the car and getting oil flowing to them the first time they are installed before wailing away on em!

K
Old 07-18-02, 03:42 PM
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BTW, when different HP still is up. The europeen FD has 240HP and US 255. nothing is different in the engine, just the meashurement. so if you dyno in a dyno in europe set for the europeen standard you will get less horsepower......hmm.....
Old 07-18-02, 04:58 PM
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max's seq'l dyno run

Originally posted by SaltyDog12


he gained almost 150Hp within 500RPMs (5k-5.5k). I sure would hate to have that kick in while playing in a good curve.
NOT HATING> but singles and non-sequentials have too much "all at once" power to handle well on anything other than a straight line. I would enjoy the same power applied even and consistantly.
That is max's old seqential run, and is a good example of how most don't set boost for a flat torque curve with seq'l. SR site has example of the right way.

Max's site does have his more current single run.
Old 07-18-02, 05:05 PM
  #56  
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ernie t...you shouldnt think i have no experience with such things without being so sure of that yourself...I had three sets of stock twins on my car. Ive dealt with them on numerous occasions. I wish i still had my wheels from when i was running up to 14 lbs on occasion..they were cooked each time after only a few months....the second set i got leaked from the heat damage caused to the seals by the high heat...stock twins do suffer from abuse of over stock boost levels..everyone knows it...just cuz you didnt open your set up to find out the truth.

as far as selling your beat junk for 500 bucks...i looked at half dozen used sets a couple years ago..each one of them had oil deposits inside the snails...id bet cash money that yours did too. no way those turbos were super nice and not leaking or cooked wheels after you ran them like that. say what you will...unless you pulled them apart..which I did do to mine...and Im sure you didnt do to yours...then you cant see what the damages are that your abuse caused them. i call that personal experience...

just cuz you sold a set of turbos to an unfortunate guy does not mean that the guts arent cooked from your abuse. Id not buy a used set of turbos from you or anyone else running a modded car. I know what kind of damage happens first hand.

so..no pot and kettle black...my words come from my own experiences...not from assumed inexperience...and not from NOT opening up my abused second hand stuff to see wtf i did to them....at least ya got 500 bucks for em cuz surely they were not worth that.

personally...Id like to see 388 hp on a non ported motor with my own eyes...id also like to see what those turbos looked like after just a few runs...a month even....leaky and black...brittle chips in the wheels due to heat damage...little chips going into prescious motor....been there...done that....wont do it again...

i wouldnt wish anyone else the frusteration caused by running too much boost...and i will say it again..just cuz ya do some pulls on a dyno with the boost way up (to get great sheets) does not mean that you can push that kind of boost on a regular basis.

anyone who says otherwise is either rich enuff to buy lots o turbos...or just plain silly.



jason


PS...seeing the dyno charts is great...thanks for posting those guys.....i cant wait to get mine done....soon...i didnt realize there were corrected and uncorrected sheets....also. it is interesting to see the oddities in some of the sheets posted. strange indeed.

great to see the fire still around...heated discussions are what makes this my fave forum.



j

Last edited by artguy; 07-18-02 at 05:14 PM.
Old 07-18-02, 10:36 PM
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Lighten up? I can understand why you're hot under the collar at this point in the thread, but I was only pointing out that the readings in the picture you posted had not been corrected, and are therefore higher. If anything, that should calm people down a little because your SAE corrected readings should be more in line with "average" results.

BTW, my Z06 put down nearly 380 RWHP bone stock... uncorrected. SAE corrected horsepower was 355.6. There's a big difference, and sometimes people use the standard readings for bragging rights (I'm not accusing, just making a statement) when in reality, the corrected numbers (which are intended to make dyno results from different parts of the country more or less comparable) would have been a bit lower.


excellent post by Jim there

I've seen dyno figures/charts and E.T.s thrown out right and left on this forum, and few are corrected for standard conditions (temperature, pressure, and, if you want to get technical, humidity)....

furthermore, it's common knowledge that different rear wheel dynos tend to produce different numbers, regardless of atmospheric corrections, varying by as much as 10-15%

"Roadracing World" had a fantastic article several years ago about how suspect rear wheel dynos are in general....they tested a "friction dyno", which produced far more repeatable and consistent numbers (from dyno to dyno), but they were also about 30% lower that convention rear wheel dyno values, so no one was too interested I wish I still had that article....although it deals with motorcycles, RR had some very cool technical stuff, leaving the average enthusiast magazine severely lacking

in the end, it's all about that big number and bragging rights....pretty silly....I guess the Supra guys are the kings, though....hey, 1200 horsepower @ 30 psi, and perfectly streetable!
Old 07-19-02, 07:30 AM
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You people argue way to much..
Sorry
Old 07-19-02, 09:06 AM
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Originally posted by Dont_Be_A_Rikki
ACTUALLY I made 319@10psi and 337@13psi
You break that puppy in yet?

Just drive down to Virginia Beach...Say high to lerch32 and my moms(or my sisters if you prefer) and drive back to MrlnD...that should put some miles on her
Old 07-19-02, 09:21 AM
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how much HP gain would a streetport give with Dont_Be_A_Rikki:s mods @ 13 psi?
Old 07-19-02, 09:30 AM
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My dyno runs last night were done at .82 boost, not the 13.2 range i was at last time. On the way to the dyno, I was doing some runs and must have did the first boost setting last and forgot to change it. It wasn't a test and tune night, so it was do 3 or 4 runs for $50 and hop off for the next car so I told Arthur not to worry about the wideband hookup.
The very first run at .82 netting 364 rwhp and 341 ft/lbs, now of course I thought I was on the 13.2 boost setting and or course about **** a brick, but we both quickly noticed the correction factor of 1.21 so he rebooted the system and we started over. After letting it heat soak while he rebooted, I put down 318 rwhp and 289 ft/lbs at .82 psi. I was watching the O2 readings on the little commander screen and engine rpms and didn't realize the boost wasn't the 13.2 like on the last dyno runs. My previous best at the 12 psi range was a 316 on the first run, compared to 318 on the my second run last night so if the first run was clean, I could have been in the 320 range without the heat soaking effect. My O2 voltage never got below .89 and stayed mainly in the .93 range which I want to compare what voltage it displays when the wideband is hooked up.

I also did some 3rd and 4th gear testing to see when I get to 12 psi on the way home. Starting off in 3rd gear at 2000 rpms, I would watch the boost and rpms on the commander and I would hit 12 psi before 2800 rpms, when I see .82 I glance up and its in the 2700 range but not sure of the exact rpm number. Same thing for 4th gear, its before 2800 rpms for the 99 spec turbos.

Tim
Old 07-19-02, 10:19 AM
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Originally posted by Dont_Be_A_Rikki

I have put about 82.7 mile on it I even let FD3BOOST drive it yesterday and he like the sound of the street port motor and I removed all the restrictions out of the car. Control door on manifold,Double throttle, and charge relief actuator butterfly in the back 1/2 of the y-pipe. so it flows real nice. Man when are ya come'n down dude? I cant wait you can drive my car too
what power do you expect?
Old 07-19-02, 10:27 AM
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Rikki, how much difference in sound is there from partial nonseq to full nonseq. I'm going to be getting upgraded twins that need to run nonseq and am wondering how loud it will be. Did you notice much volume after pulling that crap out???

Thanks,
STEPHEN
Old 07-19-02, 11:18 AM
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Tim,

1) what is this correction factor of 1.21 you speak of?

2) From your two posts it sounds like you turned the following:

stockers @ 13.2psi (.90bar) ==> 334rwhp
99 spec @ 12.0psi (.82bar) ==> 364rwhp

Did I read your posts correctly?

K
Old 07-19-02, 11:19 AM
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Originally posted by Dont_Be_A_Rikki
ACTUALLY I made 319@10psi and 337@13psi
With all do respect to the masters, I put down about the same RWHP on stock turbos. I put my post in the Rotary Performance section (where this one should have gone )

Actually, my 337.5 was at .83 bar, which I think is a little less than 13psi. Not taking anything away from Rikki, just saying that you have 2 people, 2 different cars, with about the same mods, making about the same RWHP.

What are the factors used in the the SAE vs. STD? Can we just see what the margin of error would be? Here is Columbus, a couple of people have seen a very small difference between the two.

Also, not to troll here, but there are 2 of us here in oHIo that are planning on putting down 380 @ ~12PSI with bolt on mods and tuning. At least that is what we are tuning for. Artguy, you coming out to witness this?

Anyway, long and short is that we're still have passion for our cars. If this were a marriage that we were talking about, I'd have to say for a close to 10 years, it's looking like a alot of love/hate, but the passion is still strong.

Tim: start a new thread in the Rotary Performance section with your dyno chart. Those '99s are going to kick booty.
Old 07-19-02, 11:39 AM
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Originally posted by Badog


Also, not to troll here, but there are 2 of us here in oHIo that are planning on putting down 380 @ ~12PSI with bolt on mods and tuning. At least that is what we are tuning for. Artguy, you coming out to witness this?


If you put down 380 to the ground on stock turbos running 12 psi, I will eat my old nasty dirty sweaty rx7.com hat


Anyway, long and short is that we're still have passion for our cars. If this were a marriage that we were talking about, I'd have to say for a close to 10 years, it's looking like a alot of love/hate, but the passion is still strong.

Agreed
Old 07-19-02, 12:07 PM
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oh, BTW: that 380rwhp is projected with a NON ported engine ...

And GoodfellaFD3S, we will be sure to capture it on Digital Video as long as you likewise consume your old nasty dirty sweaty rx7.com hat on video for us!

K
Old 07-19-02, 12:24 PM
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nocab72: you read it correctly, but maybe I didn't phrase is well. On my first run last night, it did show a 364 at .82 psi, but the correction factor, which the dynojet uses to get the SAE corrected HP mentioned in this thread deals with things like humidity, air temps, altitude, and other things so that it corrects to the base that all dynojet are supposed to have in. I'm not sure what the base is, 70 degree air temp?, 100 ft over sea level, etc, but its there to show what 2 cars on 2 sides of america would make HP wise. You dyno in oh on a 40 degree day, but down south, same day its 70, you'd make more uncorrected Hp than I would, but your correction factor would be .XX, where mine might be 1.02 for the higher temps or whatever. Anything over 1.05 tends to get a little to much error correction, and 1.21 means start again. On the 1.21 run, the air temp the dynojet box had was 90. then on the second run, with the 1.05, its was down in the low 70's. I think the temp outside last night as around 75ish, but inside with the fans blowing, it might have been a tad cooler.

Gordon: On the old stockers, I would hit 12 psi and would be passing the 3K mark, maybe 2950ish since the lighter flywheel helps it rev so quickly, I'd imagine a rough estimate would be 200 rpms quicker.

I'll post something in the performance section as well and hopefully post the dyno chart compared to my last .82 psi run.

Tim
Old 07-19-02, 04:37 PM
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Originally posted by nocab72
oh, BTW: that 380rwhp is projected with a NON ported engine ...

And GoodfellaFD3S, we will be sure to capture it on Digital Video as long as you likewise consume your old nasty dirty sweaty rx7.com hat on video for us!

K
You've got a deal. But what's in it for me if you (by some crazy chance) don't put down 380 to the wheels on stock motor, stock turbos, and 12 psi?


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