To Dyno? Or Not To Dyno?

[gsb876]

a QUESTION if i may,

i was all ready to book the RX in for a possible dyno read out to prove the power output, when i spoke to a cosworth specialist who regards the dyno\'s as very hard going on the engine?

Haas anyone on here had problems after a dyno read out? dont wanna ruin the car just for the sake of facts / figures

Let me know about your experiences, thanks

[g11ary]

been on dynos before and dont know anyone that has had problems caused by the dyno, The dyno finds the fault normally not create it although it is poss if the engine is weak or mapping is crap then yes a dyno could do harm but no more than good blat down rd. Dyno lasts only 10-15 secs. If ya car take that then it has problems.

[J4P RX]

Do it! :bandit

[Andyp]

I\'d say do it too bud. I took mine on and found the sod had been detuned lol there I was thinking I was hot stuff lol

def do it, gives you piece of mind too if everythings running fine..

I\'d use the dynapack at Thor though, gives ya a hub reading or Gforce are pretty cool

[scooby_si]

yeah shouldn\'t worry the decent ones like Nobles will monitor the most essential info & you can tell them how you want the car run etc if you so desire..... Nowt 100% but hey nothing in life is. Let me know if you fancy it i may tag along since i haven\'t been able to run mine as yet.....
Si

[scooby_si]

hmm sure there\'s a mobile hub type place based in Cov as well, u want me to ask those who will no? http://www.smileycentral.com/?partner=ZSzeb008\' target=\'_blank\'>http://smileys.smileycentral.com/cat/4/4_12_3.gif\' border=0>
Si

[jay]

How did you find it had been detuned Andy and how does that effect the motor now. I ask as i think mine may have been as well.
 Cheers Jay...:wave

[gsb876]

Originally posted by scooby_si
hmm sure there\'s a mobile hub type place based in Cov as well, u want me to ask those who will no? http://www.smileycentral.com/?partner=ZSzeb008\' target=\'_blank\'>http://smileys.smileycentral.com/cat/4/4_12_3.gif\' border=0>
Si

Tell ya wot Si we\'ll discuss it on sunday if you\'re coming down, when you get your car sorted we\'ll go down and get both done, wot you think?

[20B_boy]

If poss go some where with either a Dyno Dynamics or Dynapak setup; most HP numbers about atm are from these two set ups so are best for comparison.

Out of interest, talking to Guy at CPL the other day he had a GTS or GTST go on back to back runs on DD and DP setups recently, vary a bit unsurprisingly so you can see how setups vary on output. Just ask Robbie!

[Ric]

As Gary says a dyno is likely to diagnose any problems  you might have. I thought my car was running fine until I took it to a dyno and found I had a boost problem.

Just make sure you take it to a reputable place that has decent monitoring and nice big fan to provide plenty of cooling etc when you do the run.

I\'ve got some videos of mine and Si Cook\'s FDs on the rollers if you want to have a look. Again as Gary says the run is only about 15-30 seconds or so  (usually in 4th gear) so probably much less worse than a good thrashing on the road.

They should be monitoring your car and in the unlikely event of any problems, will abort the run.

besides mate no one will believe your 460bhp claims until you get your dyno print outs done :p :p :p

[gsb876]

So what does the actual 15-40 secs involve?

Never been before you see:confused:

[Ric]

if you wanna see some videos, drop me a PM or email and i\'ll set you up access to a server you can download them from.

You\'ll need broadband though as they are pretty big I\'m afraid!!

Basically, they get the car moving on the rollers, slot it into 4th and take it right up through the rev range. This gives you your dyno plot (power vs. engine speed) and subsequently, peak power at wheels figure. They then let the car coast down which allows them to calculate the transmission loss and hence give you a power at flywheel.

Some dynos will give you a torque figure as well as BHP on the plot.  If not, it is simple enough calculate it.

[scooby_si]

yeah cool i dont mind making you look good http://www.smileycentral.com/?partner=ZSzeb008\' target=\'_blank\'>http://smileys.smileycentral.com/cat/7/7_2_126.gif\' border=0> lol
Si

[g11ary]

it is as simple as already said wind her up no where near red line, prob 6500 poss 7000 revs and let go of gas takes secs, They will repeat it prob 6 times and might even tweek her for you to make her run better and safer, a track day will see those figures for 20-30 mins at a time. Go on ya big wooz LOL:p

[Robertio]

My car has probably had more RR days than any other FD and has yet to have any side effects to show for it (other than an ever increasing stack of graphs :o )  If your car is setup properly it should be no worse for it than a normal 4th gear acceleration run in the real world.  If it is not setup correctly it is better to find out sooner than later.

If you want to take your car up here to my normal rollers I\'ll pay for your run and fuel if it makes over 450bhp