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seanski44
Joined: 13 Mar 2006
Posts: 532
Location: Nottingham UK
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 Posted: Wed May 07, 2008 2:54 am Post subject: 931 at the dyno... |
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At last year's titanic 944 register's trip to the Weltmeister dynometer, me and my bro tagged along with the 931 s2....
(am assuming he hasn't already posted this!)
http://youtube.com/watch?v=aYq1hpS4Aik
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1998 BMW Z3 2.8 arctic silver & red
1981 168HP 931 S2 blue/tan leather - SOLD 
1985 121HP 924 2.0l na modded - SOLD!
1992 968 lux SOLD
1989 944 2.7 lux SOLD |
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Martijnus
Joined: 29 Dec 2006
Posts: 2019
Location: Netherlands
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| Posted: Wed May 07, 2008 3:20 am Post subject: |
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so you've got 168 hp on the rear wheels?
That's a nice score as far as I know... if the factory says 170 on the crank...
Nicely made film by the way 
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"Rule: Turbo's make torque, and torque makes fun." (C. Bell)
924 "50-jahre", 1981.
MSII/extra, LPG, ITB's, 5lug.
To be turbo'ed in a while.
Killed her at the Nurburgring, Porscheless at the moment |
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seanski44
Joined: 13 Mar 2006
Posts: 532
Location: Nottingham UK
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| Posted: Wed May 07, 2008 5:46 pm Post subject: |
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cheers. Yeah that was last year, unfortunately we've sold the car since then - factory specs (at the wheels) for UK spec was 177HP I believe. We hit 168.3HP, though the only mods were oversize pistons and a K&N...
thanks for your kind comment about the film too!
EDIT - MY MISTAKE ABOVE -MEANT TO SAY 'AT THE FLYWHEEL'
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1998 BMW Z3 2.8 arctic silver & red
1981 168HP 931 S2 blue/tan leather - SOLD
1985 121HP 924 2.0l na modded - SOLD!
1992 968 lux SOLD
1989 944 2.7 lux SOLD
Last edited by seanski44 on Thu May 08, 2008 7:00 pm; edited 1 time in total |
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morghen
Joined: 21 Jan 2005
Posts: 9102
Location: Romania
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| Posted: Wed May 07, 2008 6:30 pm Post subject: |
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what oversize did you use?
anyway..stock 168 WBHP clearly says something about the 924 turbo !!
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seanski44
Joined: 13 Mar 2006
Posts: 532
Location: Nottingham UK
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| Posted: Wed May 07, 2008 6:41 pm Post subject: |
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| morghen wrote: | what oversize did you use?
anyway..stock 168 WBHP clearly says something about the 924 turbo !! |
It wasn't us who rebuilt it so I can't really tell you - the only thing is I remember when we replaced the head that the piston heads weren't stock - there are some photos on the board somewhere of them, I think they were the larger of the ones listed on PET.
The car was awesome - circumstances meant it had to go though - my brother's got a list of new and used parts we've got left over, I think he's posted them before (noisybrother) - that's him talking on the vid btw and his son
_________________
1998 BMW Z3 2.8 arctic silver & red
1981 168HP 931 S2 blue/tan leather - SOLD
1985 121HP 924 2.0l na modded - SOLD!
1992 968 lux SOLD
1989 944 2.7 lux SOLD |
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morghen
Joined: 21 Jan 2005
Posts: 9102
Location: Romania
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| Posted: Wed May 07, 2008 6:47 pm Post subject: |
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yea i know him. bought some stuff from him a couple o' weeks ago.
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2Fast
Joined: 09 Dec 2007
Posts: 459
Location: Klamath Falls, OR
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| Posted: Thu May 08, 2008 3:27 am Post subject: Re: 931 at the dyno... |
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| seanski44 wrote: | At last year's titanic 944 register's trip to the Weltmeister dynometer, me and my bro tagged along with the 931 s2....
(am assuming he hasn't already posted this!)
http://youtube.com/watch?v=aYq1hpS4Aik |
Thats cool! 
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=====>Alex<=====
1979 Porsche 924 NA 5spd
1979 Parts Porshce 924 NA 5spd |
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Khal
Joined: 26 Sep 2003
Posts: 4872
Location: Sunny and lovely interior BC, Canada
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| Posted: Thu May 08, 2008 6:03 am Post subject: |
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| seanski44 wrote: | | ...factory specs (at the wheels) for UK spec was 177HP I believe. |
I hate to be pedantic (especially when morghen is already rapt with the result  ) but I think you'll find that 177hp figure quoted by Porsche for the "Euro/Rest-of-the-world" 924 Turbo is engine/flywheel/crank/whateveryawannacallit horsepower, not the horsepower at the wheels. I also think you'll find that figure is quoted as 177 PS (as I understand it, PS is German for "Pferdestärke", which literally means horsepower, but it is a metric unit, which is stated as slightly less than one 'international' horsepower, which is what the Yanks use, I think... am I getting tedious yet?). Anyways, the difference between 1 'international' horsepower, 1 Pferdestärke, 1 brake horsepower, etc, is negligible, really. But the difference between 'flywheel' horsepower and 'rear wheel' horsepower is not.
If your car is/was actually reading at 168-odd horsepower at the rear wheels -and I don't doubt for second that it was -that is a very impressive result! That puts you well over the factory-quoted power. Interestingly, Kye's apparently stock RoW 924 Turbo dyno'd at over 160rwhp...
Mine only hit 150rwhp
Cool vid
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seanski44
Joined: 13 Mar 2006
Posts: 532
Location: Nottingham UK
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| Posted: Thu May 08, 2008 6:59 pm Post subject: |
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| Khal wrote: | | seanski44 wrote: | | ...factory specs (at the wheels) for UK spec was 177HP I believe. |
I hate to be pedantic (especially when morghen is already rapt with the result ) but I think you'll find that 177hp figure quoted by Porsche for the "Euro/Rest-of-the-world" 924 Turbo is engine/flywheel/crank/whateveryawannacallit horsepower, not the horsepower at the wheels. I also think you'll find that figure is quoted as 177 PS (as I understand it, PS is German for "Pferdestärke", which literally means horsepower, but it is a metric unit, which is stated as slightly less than one 'international' horsepower, which is what the Yanks use, I think... am I getting tedious yet?). Anyways, the difference between 1 'international' horsepower, 1 Pferdestärke, 1 brake horsepower, etc, is negligible, really. But the difference between 'flywheel' horsepower and 'rear wheel' horsepower is not.
If your car is/was actually reading at 168-odd horsepower at the rear wheels -and I don't doubt for second that it was -that is a very impressive result! That puts you well over the factory-quoted power. Interestingly, Kye's apparently stock RoW 924 Turbo dyno'd at over 160rwhp...
Mine only hit 150rwhp
Cool vid |
Think everyone's got this out of proportion - 168 is an extrapolated flywheel reading based upon a (lower) rearwheel reading extrapolated using Porsche's figures. The dyno software does this automatically. No stupid claims going on here, simply a (nearly) stock 931 and a video I wanted to share.
clear?
_________________
1998 BMW Z3 2.8 arctic silver & red
1981 168HP 931 S2 blue/tan leather - SOLD
1985 121HP 924 2.0l na modded - SOLD!
1992 968 lux SOLD
1989 944 2.7 lux SOLD |
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RC
Joined: 25 Mar 2007
Posts: 2637
Location: Australia
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| Posted: Thu May 08, 2008 7:43 pm Post subject: |
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That is a nice and well produced video. 
Sure no speeding tickets were incurred either. 
Good job. I enjoyed watching it.
Roger |
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morghen
Joined: 21 Jan 2005
Posts: 9102
Location: Romania
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| Posted: Thu May 08, 2008 10:30 pm Post subject: |
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damn you should have sushhed
however the other guy's 931 pulled it preety good.
Anyways its still only 2 hp down wich is realy good...you could get 170 or even more in a cooler day.
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Khal
Joined: 26 Sep 2003
Posts: 4872
Location: Sunny and lovely interior BC, Canada
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| Posted: Fri May 09, 2008 2:35 am Post subject: |
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| seanski44 wrote: | | Think everyone's got this out of proportion... No stupid claims going on here, simply a (nearly) stock 931 and a video I wanted to share. |
 Sorry, mate! I only wanted to clarify. We all love watchin' toofahs doing anything.
| seanski44 wrote: | ...168 is an extrapolated flywheel reading based upon a (lower) rearwheel reading extrapolated using Porsche's figures. The dyno software does this automatically.
clear? |
Yes, clear! I suspected that was the case.
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'80 924 Turbo |
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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| Posted: Fri May 09, 2008 3:07 am Post subject: |
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Wow, what a cool video and beautiful '31.
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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Neil924
Joined: 18 Mar 2003
Posts: 4225
Location: Canada
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| Posted: Fri May 09, 2008 4:33 am Post subject: |
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| Great car, great video. |
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seanski44
Joined: 13 Mar 2006
Posts: 532
Location: Nottingham UK
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| Posted: Fri May 09, 2008 6:07 pm Post subject: |
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cheers chaps!
(Khal, no worries, I made the original mistake when I said at the wheels when I meant at the flywheel)
What's next then, Top Gear??
_________________
1998 BMW Z3 2.8 arctic silver & red
1981 168HP 931 S2 blue/tan leather - SOLD
1985 121HP 924 2.0l na modded - SOLD!
1992 968 lux SOLD
1989 944 2.7 lux SOLD |
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