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Old 09-15-2013, 02:49 PM   #1
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Default Soviet era car, space age turbo, rocket fuel

Yesterday I went to the dyno and made 458whp and 391ft/lbs on the last run.

- E85 (rocket fuel)
- 1.8 block, 84mm wiseco pistons, eagle rods (1884cc displacement)
- stock 99 head from a pick and pull junkyard
- wittyworks hotside parts (manifold, downpipe, exhaust)
- Borg Warner EFR6758 turbo
- Flat-top EUDM intake manifold, stock 99 throttle body
- M-tuned fuel rail in single-feed configuration, stock fuel hard lines, -6AN lines after that
- Fuelab mini FPR, ID1000 injectors, 60psi base fuel pressure
- Walbro 416 E85 pump (part #F90000267)
- Precision 600 intercooler
- Silverado truck coils (aka LS2 coils), 0.035" gap, NGK 4091 resistorless plugs, MSD 32829 wires
- 6 speed transmission from a 2005 Mazdaspeed
- ACT 6 puck xtreme clutch
- Timing map made by Faeflora. Timing map of RAPE



The dyno operator started all the pulls at 3-3.5k rpm which is too late and doesn't reflect my EFR's spool accurately. For example, during the last run it spooled to 29psi at 4300rpm - vs 3700 if the pull was started at 2k

my old 400whp dyno vs 458, showing late spool

(nothing changed in the hotside since that dyno)

photoshopped 458whp dyno to show how spool SHOULD be like



All 4 runs overlayed

Run1: Wastegate, 15psi
Run2: Allofit, -4* timing, dyno fan off
Run3: Allofit, -2* timing, dyno fan on
Run4: Allofit, unadjusted timing map, dyno fan on

Logs:
http://s95367906.onlinehome.us/photo...58whp/Run1.msl
http://s95367906.onlinehome.us/photo...58whp/Run2.msl
http://s95367906.onlinehome.us/photo...58whp/Run3.msl
http://s95367906.onlinehome.us/photo...58whp/Run4.msl

Videos:

Attached Thumbnails
Soviet era car, space age turbo, rocket fuel-458whp.jpg   Soviet era car, space age turbo, rocket fuel-458whp-vs-400whp.jpg   Soviet era car, space age turbo, rocket fuel-458whp-spool.jpg   Soviet era car, space age turbo, rocket fuel-allruns.jpg  
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Old 09-15-2013, 02:55 PM   #2
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Some notes
- Fuel pressure was higher than it was supposed to, for some reason it was hovering around 63psi effective pressure
- Wastegate boost was only 15-16psi so I could have probably reached 30psi or higher if I tightened the wastegate arm. All the "allofit" pulls were hitting 0% wastegate duty.
- 90% injector duty cycle, meaning there was still fuel left!
- Turbo speed sensor was disconnected, sadly :(
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Old 09-15-2013, 03:00 PM   #3
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Turbo speed data would be dope.

Wanna post the Fae timing map of rape?
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Old 09-15-2013, 04:08 PM   #4
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Um, that's all on the CAS sensor? woah....
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Old 09-15-2013, 04:53 PM   #5
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post the msq lol
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Old 09-15-2013, 05:03 PM   #6
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Quote:
Originally Posted by AbeFM View Post
Um, that's all on the CAS sensor? woah....
no, I have a 36-1 trigger wheel. The cas is just for CAM signal - I modified it to only have a single tooth.
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Old 09-15-2013, 05:38 PM   #7
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Quote:
Originally Posted by Full_Tilt_Boogie View Post
Turbo speed data would be dope.

Wanna post the Fae timing map of rape?


That made 458
-2* made 454
-4* made 436. the fan wasn't on but it was definitely gaining up until -2*
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Old 09-15-2013, 05:55 PM   #8
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^ d-d-d-d-d-daaaaaaamn
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Old 09-15-2013, 08:06 PM   #9
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That is very impressive. All the work has paid off.
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Old 09-16-2013, 04:21 PM   #10
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I can get a 3900-4000rpm full spool (29psi) out of a 3076 on a 1.9L if I start at ~2700rpm.

I also got 428hp at 29psi at -5* on an already conservative ignition map (was out of water on the WI system and didn't notice on the dyno).

So somehow I was expecting more out of this setup, given the 3076 is an old turbo by todays standards.
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Old 09-16-2013, 05:06 PM   #11
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Quote:
Originally Posted by Reverant View Post
I can get a 3900-4000rpm full spool (29psi) out of a 3076 on a 1.9L if I start at ~2700rpm.

I also got 428hp at 29psi at -5* on an already conservative ignition map (was out of water on the WI system and didn't notice on the dyno).

So somehow I was expecting more out of this setup, given the 3076 is an old turbo by todays standards.
You're excluding a lot of information. Head, RPM, fuel, etc.
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Old 09-17-2013, 03:19 AM   #12
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VVT head with no work apart from SS valves, "93" octane fuel ("100 RON"), max RPM is 7300, JE 84mm/8.6:1, 99 intake w/VICS, GM coils, RX-7 FD gearbox, MS2. Target AFRs are 11.3-11.5, timing is 8-15* retarded compared to your map posted above.
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Old 09-17-2013, 07:51 AM   #13
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Quote:
Originally Posted by Reverant View Post
I can get a 3900-4000rpm full spool (29psi) out of a 3076 on a 1.9L if I start at ~2700rpm.

I also got 428hp at 29psi at -5* on an already conservative ignition map (was out of water on the WI system and didn't notice on the dyno).

So somehow I was expecting more out of this setup, given the 3076 is an old turbo by todays standards.
428hp or 428whp?
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Old 09-17-2013, 08:37 AM   #14
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Crank hp. I have come to the conclusion that US dynos read about the same whp as what most european dynos read as crank hp.
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Old 09-17-2013, 09:00 AM   #15
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Quote:
Originally Posted by Reverant View Post
Crank hp. I have come to the conclusion that US dynos read about the same whp as what most european dynos read as crank hp.
That's odd. So when new cars are dynoed there, it's already adjusted for drivetrain loss and you get near the published figures?
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Old 09-17-2013, 09:30 AM   #16
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Its all a guestimate so why not? I'd say that sounds pretty reasonable with a vvt head actually.
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Old 09-17-2013, 11:00 AM   #17
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Quote:
Originally Posted by Reverant View Post
Crank hp. I have come to the conclusion that US dynos read about the same whp as what most european dynos read as crank hp.
Yeah, no.
My dyno result is SAE corrected WHP on a dyno that's approved for club racing, so its accurate. Uncorrected, its 485whp/404ft/lbs. Crank hp is over 500, closer to 550.
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Old 10-25-2013, 01:58 AM   #18
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better power/weight ratio then a 1.3 million dollar pagani huayra? Badass!!!
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Old 11-07-2013, 09:45 AM   #19
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I may be a bit late to this ( been focusing on getting my car running and not the forums )
Our builds are about identi-chokes- Not really, I don't have awesomeness :(
But, I noticed, why does the gear ratio keep changing in all 4 runs? I thought it's suppose to stay the same.
Also smoothing: 5, seems like a lot. I'm no expert on this stuff though, just trying to understand it.
Sorry if it seems I'm critiquing.
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Old 11-07-2013, 09:57 AM   #20
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Quote:
Originally Posted by Impuls View Post
I may be a bit late to this ( been focusing on getting my car running and not the forums )
Our builds are about identi-chokes- Not really, I don't have awesomeness :(
But, I noticed, why does the gear ratio keep changing in all 4 runs? I thought it's suppose to stay the same.
Also smoothing: 5, seems like a lot. I'm no expert on this stuff though, just trying to understand it.
Sorry if it seems I'm critiquing.
I think the gear ratios are different because the more power my car makes the more it "squats" on the rollers and the more rear tires get compressed.

The rear shocks compress A LOT under full power - see vidya


Regarding smoothing - I always use 5. For some dynos its unneeded, for other it is. Another factor is ramp settings they use on the rollers - the dyno I went to before did long pulls (~10 seconds) vs the last time it was a 5 second run. It can be clearly illustrated if you use the 'time' scale in WinPEP -


Finally, in the same image above I turned off any correction factors. BAM all of a sudden I'm making 474whp
It was a very nice day and ambient conditions were better than SAE specs.
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