Chris Wilson Posted June 23, 2012 Share Posted June 23, 2012 It's all hot air anyway, any serious engine builder would only ever consider an engine dyno for development, power and torque data, and mapping work, anything else is such a compromise as to be for hobbyists or weekend entertainment purposes RR's are OK for diagnostic work and a few quick power runs, but they are terrible for development work and true engine torque figures, IMHO. Hub type ones are infinitely better than rollers for big BHP cars though. All RR's give the transmission a hard time as it's hard to keep transmissions cool in all but brief runs through the RPM range. Link to comment Share on other sites More sharing options...
listy Posted June 23, 2012 Share Posted June 23, 2012 yeah me three! im hung like a hamster plus i have a small turbo... the only thing i got going for me is that i aint ginger The supe is though (ps not a bad thing, love your car ) Link to comment Share on other sites More sharing options...
scoooby slayer Posted June 23, 2012 Share Posted June 23, 2012 It's all hot air anyway, any serious engine builder would only ever consider an engine dyno for development, power and torque data, and mapping work, anything else is such a compromise as to be for hobbyists or weekend entertainment purposes RR's are OK for diagnostic work and a few quick power runs, but they are terrible for development work and true engine torque figures, IMHO. Hub type ones are infinitely better than rollers for big BHP cars though. All RR's give the transmission a hard time as it's hard to keep transmissions cool in all but brief runs through the RPM range. Link to comment Share on other sites More sharing options...
JamieP Posted July 6, 2012 Author Share Posted July 6, 2012 (edited) More info, Jurgen did 844 Bhp 1.5 bar at the flywheel at SRR 2 min ago he did 730 Bhp 1.5 bar at the hubs at dans dynapack hub dyno. Edited July 6, 2012 by JamieP (see edit history) Link to comment Share on other sites More sharing options...
mark newman Posted July 6, 2012 Share Posted July 6, 2012 yes you are right Jamie, mine was at dans 736 bhp @ 1.7 bar, and at srr 1.7 bar it was 744 bhp. and then it went on to 849.9 bhp with a bit of nos but that was only a small amount, as the dyno would not hold the car and tyres spinning , I will find out what the true bhp on my terminals on the strip. Link to comment Share on other sites More sharing options...
JamieP Posted July 6, 2012 Author Share Posted July 6, 2012 Thanks for the info Mark, updated page 1. Link to comment Share on other sites More sharing options...
Jurgen-Jm-Imports Posted July 6, 2012 Share Posted July 6, 2012 More info, Jurgen did 844 Bhp 1.5 bar at the flywheel at SRR 2 min ago he did 730 Bhp 1.5 bar at the hubs at dans dynapack hub dyno. thats correct same map same set up around 100bhp difference for 4wd.. its making now 960 @hubs and 870 tq around - 1060 and 970 tq at surrey = using the formula from our test Link to comment Share on other sites More sharing options...
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