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Porsche Crest Ultimate 930 Dyno Thread!

How about we try to get as much 930 dyno info as possible in one place?

Post chart's if you have them! Or, just post your numbers.

Stock, modified, before & afters, any and all.

Let us know what mods you have, the dyno used, the conditions, and boost at peak HP.

Most do not know but many good dynos often can monitor boost along with Air Fuel Ratios.

Don't let the big dog HP numbers scare you off! We need stock, medium, and big ones.

If you are thinking of making a turbo, intercooler, or exhaust change it would be cool if you got before and afters.

If you have a Dyno Post already, how about posting your summary numbers and a link to your post.

This could be a good resource for all.

-------

I stole the following post as it seemed the best example of what a stock 930 should look like. (but EBC controlled @.8 bar). I hope krasuskyp dose not mind.

Quote:
Originally Posted by krasuskyp View Post
Had an invite to hit the rollers this a.m., figured WTF why not give it a whirl - felt GOOD to confirm AFR's and the like really.

Stock '87 mit 40k miles, 'cept for gutted cat, GReddy Profec B Spec II MBC set to 0.8bar, and spring centered clutch. Sea level, maybe 60F, Mustang dyno.

All in all I'm giddy at the curves - AFR's were so spot on Tony didn't even want to bother tinkering with anything, let alone pulling a 3rd pull - sweet! I basically called the whp dead nuts (I predicted 250whp, and was 249 before "smoothing), while torque on the other hand was waaaaay beyond expectation (even moreso before smoothing).

Interesting how the gutted cat didn't net me much hp beyond Porsche's claimed bhp, but torque was way up. Again, I'm just loving the curves! Anywho...

Enjoy!



Here is his thread: Ran der '87 930 today @ EPL's dyno, why not

Last edited by 911st; 01-15-2010 at 09:29 AM..
Old 01-15-2010, 09:25 AM
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Ok, my old set up



Garrett turbo, not sure which, probably a GT30r but never got a straight answer from the clowns i used to use, went through two of these turbos in under 13k miles, poor install i guess.
964 Cams
964 Intercooler
Stock wastegate with 1.0bar spring but only netted around 0.9bar
Heads ported and injector blocks modified
Manifold ported
Stock ignition 29-degrees
B&B style headers but made in the UK for 9m
Stock muffler
Stock airbox
Stock rebuilt WUR










I then fitted a K27HFS, airbox, fabspeed muffler, IA fuel head. Didn't do anything with the WUR, first day out it melted a piston, didn't get to the dyno before hand so no info for you there, sorry
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Jonathan.
87 930, 993 turbo engine, RS Tuning 520PS/515lbf-ft, Arrow Rods, ARP hardware, Solid lifters, G50-50, RS Flywheel, 890nm Sachs clutch, RSR coil overs all round, 993 C4 calipers front, 930 fronts on the rear, Ruf Speedlines.....
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Old 01-15-2010, 10:39 AM
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ok,i just dynoed last night

stock 3.3 engine - 76K miles
stock gearing
Carrera intake & throttlebody (with 3/4" tapered adapters to fit heads
double stacked stock intercoolers
K27-7200 12psi boost
B&B headers
straight pipe (no muffler, just 24" of 3" pipe)
Coil pack ignition with 20* total timing
Megasquirt 2 fueling
93 octane

dyno room was
76*
29.8 baro
48% humidity

i'll post up the graphs when i get them, but the car made 300rwhp / 300rwtq on an MD "mustang" dyno

Last edited by drmatera; 01-15-2010 at 09:55 PM..
Old 01-15-2010, 09:52 PM
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Quote:
Originally Posted by drmatera View Post
ok,i just dynoed last night

stock 3.3 engine - 76K miles
stock gearing
Carrera intake & throttlebody (with 3/4" tapered adapters to fit heads
double stacked stock intercoolers
K27-7200 12psi boost
B&B headers
straight pipe (no muffler, just 24" of 3" pipe)
Coil pack ignition with 20* total timing
Megasquirt 2 fueling
93 octane

dyno room was
76*
29.8 baro
48% humidity

i'll post up the graphs when i get them, but the car made 300rwhp / 300rwtq on an MD "mustang" dyno
Are you sure your barometric pressure is correct, the average in Florida is over 100, check this link out Florida Barometric Pressure Map
If this is input wrong it can play havoc with readings, as can intake air temp, the dyno will either (sometimes HUGELY) over or under compensate.
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Jonathan.
87 930, 993 turbo engine, RS Tuning 520PS/515lbf-ft, Arrow Rods, ARP hardware, Solid lifters, G50-50, RS Flywheel, 890nm Sachs clutch, RSR coil overs all round, 993 C4 calipers front, 930 fronts on the rear, Ruf Speedlines.....
Old 540 BMW, XB12S Modified, for being a total hooligan
Old 01-16-2010, 02:45 AM
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Quote:
Originally Posted by JBL930 View Post
Are you sure your barometric pressure is correct, the average in Florida is over 100, check this link out Florida Barometric Pressure Map
If this is input wrong it can play havoc with readings, as can intake air temp, the dyno will either (sometimes HUGELY) over or under compensate.
JBL, guessing that drmatera's barometric pressure measurement is expressed in inches of mercury, a commonly used unit in these parts since we haven't gone metric like the rest of the world.
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Old 01-16-2010, 06:25 AM
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Powerhaus Headers
B&B dual outlet exhaust
B&B intercooler
K27 (something)
1 bar spring

This was the first pull at 95 degrees ambient temperature, on the next run I lost 24hp to heat soak.

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Old 01-16-2010, 06:36 AM
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jwasbury is correct. The dyno and it's measuring devices are checked and calibrated once a month. The Baro on the dyno is a pretty common reading for this time of year here. You rarely see 30"

willtel - those are good numbers
Old 01-18-2010, 07:11 AM
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Quote:
Originally Posted by jwasbury View Post
JBL, guessing that drmatera's barometric pressure measurement is expressed in inches of mercury, a commonly used unit in these parts since we haven't gone metric like the rest of the world.
Learn something new every day!
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87 930, 993 turbo engine, RS Tuning 520PS/515lbf-ft, Arrow Rods, ARP hardware, Solid lifters, G50-50, RS Flywheel, 890nm Sachs clutch, RSR coil overs all round, 993 C4 calipers front, 930 fronts on the rear, Ruf Speedlines.....
Old 540 BMW, XB12S Modified, for being a total hooligan
Old 01-18-2010, 08:03 AM
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Very interesting thread. I hope we see more members posting, the mods and boost peak etc. with the chart.

thanks
Old 01-18-2010, 10:06 AM
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If anyone sees a dyno elsewhere we might consider summarizing the build and results here and put a link to the original thread. Even if on another board?

The more data points the better this might be a good resource.
Old 01-18-2010, 10:32 AM
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Dyno posts do have their place but because of the differences in dynos (output) and physical locations on this planet you have to take everybodies results with a grain of salt. The best representation of a vehicles power is measuring speed over a distance vs. vehicle weight.

When I ran my car in the 1/4mile we calculated, based on vehicle weight, the power it took to do it. We guessed 300rwhp and thats what it made. People say the cars dynoed on load bearing units typically show less power than those on inertia dynos such as dynojet. So if I dynoed on a dynojet and it showed more power it still wouldn't change the fact that the car trapped what it did. I would much rather hear from guys that ran their cars on a track but any info is better than none so carry on...

now that being said i'm jelous of willtel's numbers . I need to get my boost controller working so i can get my boost up to 15psi
Old 01-18-2010, 10:47 AM
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A 60-130mph thread with car weight would be great, i seam to be the only person with a 930 other than DKNEBS that has ever posted a time.
As you say, dyno figures are just bits of paper, a proper data logged acceleration figure cuts out the BS, and gives a way better comparison between mods!
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87 930, 993 turbo engine, RS Tuning 520PS/515lbf-ft, Arrow Rods, ARP hardware, Solid lifters, G50-50, RS Flywheel, 890nm Sachs clutch, RSR coil overs all round, 993 C4 calipers front, 930 fronts on the rear, Ruf Speedlines.....
Old 540 BMW, XB12S Modified, for being a total hooligan
Old 01-18-2010, 11:10 AM
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Quote:
Originally Posted by JBL930 View Post
A 60-130mph thread with car weight would be great, i seam to be the only person with a 930 other than DKNEBS that has ever posted a time.
As you say, dyno figures are just bits of paper, a proper data logged acceleration figure cuts out the BS, and gives a way better comparison between mods!
What software did you use? Can it be captured with an iPhone?
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Old 01-18-2010, 11:49 AM
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Has anybody got charts that show the maximum acceleration shift points for stock 930? Is it simply the REDLINE?
Old 01-18-2010, 12:10 PM
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Sure, add 1/4 mile times or any other reference point.

HP is more an independent measurement. Trap speed is technique, car weight, rear wheel diameter, areo, gears... but it can still be good performance info.

Yes there is variations by dyno style or brand but if you get enought data points you can alwas through out the high and lows or confirm difference by type of dyno.

If one owner comes in high we can suspect the dyno or probe further. If he had something different on his car like extrude honing there intake or Brian's new equal length headers then we can accept the improvement or wait until someone else tries said mod.

The basics seem to be that a stock 930 makes about 250whp/300fwhp.

A 930 w, a K27-7200 turbo, IC, exhaust, and boost and actual .9 bar at peak HP is going to make about 320-340 whp or 380-400 fwhp.

After that there is a bigger turbo to reach 1 bar at HP peak , cam, quality porting, fueling, and or a change to EFI for even more to be had.

Any and all data is good if there is full disclosure.
Old 01-18-2010, 12:23 PM
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Quote:
Originally Posted by EmptyGarage View Post
Has anybody got charts that show the maximum acceleration shift points for stock 930? Is it simply the REDLINE?
That is an interesting topic and would make a great new post. Maybe someone could even post a gear chart for a couple of different rear wheel sizes.

It is going to depend on the build. Look at the charts we have already. The goal is the highest average HP with each gear.

Put close gears in and the average hp goes up quite quickly.

A stock or stock cam motor, short shifting will probably yeald the highest average HP.

For a motor with larger turbo and SC cams that have moved the HP range up in the rpm range, shifting closer to red line is going to yield a higher average HP.

For most of us a max rpm 1-2 shift is probably best at or near red line as most 930 motors fall off so much in rpm between shifts putting us low on the HP curve with 2nd gear.

The challenge becomes our rod bolts and valve springs. They do not like to go much past 6500rpm before the rod bolts start stretching and valve float may start to become an issue, especially with SC cams.
Old 01-18-2010, 12:37 PM
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Garage
How can we have an ultimate 930 dyno thread without this:http://http://www.youtube.com/watch?v=9sRzLAYVPJ8 or this 60-130 in a heartbeat:YouTube - Nyce1s.com - Eddie Bello's RPM North Porsche 911 1200+ WHP
Old 01-18-2010, 02:10 PM
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Quote:
Originally Posted by willtel View Post
What software did you use? Can it be captured with an iPhone?
I use an AX22 Products Data loggers AX22 - Racing - Race Technology Ltd - Automotive Technical Excellence But a lot of guys use the DriftBox DriftBox - Drift and Performance Meter
You can only get accurate data from a proper GPS unit like these, an iPhone app won't be accurate. And even these boxes can be fooled, you need the car at rest and let the box calibrate properly before a run.
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87 930, 993 turbo engine, RS Tuning 520PS/515lbf-ft, Arrow Rods, ARP hardware, Solid lifters, G50-50, RS Flywheel, 890nm Sachs clutch, RSR coil overs all round, 993 C4 calipers front, 930 fronts on the rear, Ruf Speedlines.....
Old 540 BMW, XB12S Modified, for being a total hooligan
Old 01-18-2010, 04:14 PM
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Quote:
Originally Posted by EmptyGarage View Post
Has anybody got charts that show the maximum acceleration shift points for stock 930? Is it simply the REDLINE?
For a 930 with a 4 speed box and stock 16" wheels the best way to do a 60-130 run, after you have let your data logger calibrate, is to crawl along in 2nd gear at about 30mph then punch your foot to the floor up to near the red line, then change to 3rd and hold it to the limiter, this will net around/under 133mph.

This is a run with a stock 4 speed and stock wheels, the change from 2nd to 3rd is a round 6800rpm, so roughly 88mph in 2nd and a top speed in 3rd of just under 133mph




This is a recent run, still with the stock 4 speed, but with Ruf speedlines and 285/40/17's. Notice a top speed in 2nd at around the same rpm of about 95mph. I backed off way before the limiter in 3rd as i knew i'd hit 130mph already




I'll be back at the airfield in the next couple of months, with the G50/50 installed, and will get some data from 0-300kph. I'll make sure i change gear at the same 6800rpm point if possible, and post a graph.
The last time i did a 300kph run i didn't start from stand still, and i didn't go hard through the gears as i was just looking for what the car would do flat out, so the times are pretty useless, but here's the data anyway, with G's over laid





If you have a dyno chart with flywheel torque, you can input the data into this calculator, it'll give you pretty accurate info http://vlsicad.ucsd.edu/~sharma/Potpourri/perf_est.html
With my old tire sizes and stock gearing it gave me a max of 186mph at 7000rpm, i actually managed 187.4mph. And a 60-120mph of 6.0secs and i actually did it in 6.01. Pretty bloody close right!
With the new wheels and tires, and new G50/50, my top speed at 7000rpm is 208mph (with the 4 speed and these tires 205mph). I don't have the power for over 200mph i don't think, but should punch into the 190's
Will post the graphs when i have them
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87 930, 993 turbo engine, RS Tuning 520PS/515lbf-ft, Arrow Rods, ARP hardware, Solid lifters, G50-50, RS Flywheel, 890nm Sachs clutch, RSR coil overs all round, 993 C4 calipers front, 930 fronts on the rear, Ruf Speedlines.....
Old 540 BMW, XB12S Modified, for being a total hooligan
Old 01-18-2010, 04:41 PM
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930 3.3
Twin-plugged, EDIS
Megasquirt EFI
B&B headers
Carrera intake & throttle body
GoingSuperFast full bay intercooler
K27-7200
1 bar wastegate







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Old 01-18-2010, 05:21 PM
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