DYNO readings

1. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

   #1 23rd June 2012, 22:10

   seen this else where and im a little curious
   
   c20 let
   k04/k06 hybrid turbo..
   
   run 1:
   
   wheel: 300.9bhp @6659 RPM
   engine: 337bhp @ 6659 RPM
   276lbft @ 6606 RPM
   
   run 2:
   
   wheels: 322.4 @ 6908 RPM
   engine: 358.5 @ 6959 RPM
   torque: 276.6 @ 6629 RPM
   
   its raised a few eye brows..i know the owner of the dyno was said to be quote me happy at his old workshop..but the transmission losses are even minimal at that power which looks a bit odd to me
   
   i know it depends on how the dyno is working them, but would you say that looks right??
2. Tom5190 Saxperience Post Whore Joined: Sep 2007 Someones Bumhole Posts: 5721 Mk2 16v Desire

   #2 23rd June 2012, 22:28

   You got the graphs, what are the torque figures like at peak power are they correct?
   
   Edit: should be:
   
   Run 1 - lb/ft at peak power -
   
   Wheels - 237.32lb/ft
   Fly - 265lb/ft
   
   Run 2 - lb/ft at peak power -
   
   Wheels - 245.11lb/ft
   Fly - 270.56lb/ft
3. Gareth_R Established Member Joined: Mar 2010 Basildon, Essex Posts: 1042 Citroen AX VTS

   #3 23rd June 2012, 22:32

   only 10% transmission losses is actually pretty conservative. Would be interested to know whether thats a standard adjustment or worked out on the overrun
4. Tom5190 Saxperience Post Whore Joined: Sep 2007 Someones Bumhole Posts: 5721 Mk2 16v Desire

   #4 23rd June 2012, 22:34

   Dont no why i just did that i read what you said wrong whats raising eyebrows the actual wheel figures?
5. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

   #5 23rd June 2012, 22:43

   i think more ppl are concerned with the wheel figures..i was just concerned with the losses i never bothere working it out..just seemed very low at that power
   
   dont have a spec to look at..now youve mentioned it being 10% its doesnt seem all that bad
   
   but then its not even hard to see it at 10% when you look at the figures
6. Gareth_R Established Member Joined: Mar 2010 Basildon, Essex Posts: 1042 Citroen AX VTS

   #6 23rd June 2012, 22:50

   well the wheel figures are usually the more accurate as thats where a dyno reads it off
   
   and i've heard most places that use a standard figure will do something like 18-20% losses
7. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

   #7 23rd June 2012, 22:54

   i think thats why im seeing it as odd
   
   majority show 20%..which would put the fly closed to 385 or so (not worked it lol)
8. Tom5190 Saxperience Post Whore Joined: Sep 2007 Someones Bumhole Posts: 5721 Mk2 16v Desire

   #8 23rd June 2012, 23:06

   Well its like 12% on run 1 and 10% on run 2. At 6600 odd thats not that strange i dont think really i was at 15% at 7500.

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