Tim's ERST
 

Following on from the PE rr day we ran up the car again at Nobles yesterday. As you can see from the torque curve things are VERY different to the PE results!

Now at PE we ran 22 psi as opposed to 27psi at Nobles but this still shows the huge difference in top end torque!!

https://i15.photobucket.com/albums/a...ms/TimPErr.jpg

https://i15.photobucket.com/albums/a.../Tim308rrb.jpg

we all know how inacurate rr,s can be, i dont think you or tim have anything to prove tbh

What does it rev to?! :eek:

Power just looks to be climbing and climbing!

yes the power is still climbing after 6000k

but looks the same

:top: :top:

What cam's she on? Still hydraulics?

Even Linsays graph tailed off on the power rollers compared to nobles.

why not run the same boost though if a comparison?

20 bhp for 5psi!!!

i'd get more than that if i upped mine by 5psi

:blabla:

So how can you choose one to trust :cry: :cry:

:cry: :cry:

With the boost the car has 23 psi to 6000 then every 5oo rpm it rise to 28 at limiter,just shows there wasnt enough air flow for MY car @ Powers.

Does that mean she runs 23pis from say 4k to 6k, THEN it rises?

Martin exactly you can't comapare RR's.

The thing is though you can tell from the fuel map where a car makes peak torque, because peak torque happens to co-incide with peak VE and hence this is shown by the fuel map. Tim's peak torque is 6500rpm.

I just thought it rather interesting to show that the results from PE show the torque falling after 5500rpm.

With regards to rpm Tim's usual rev limit is around 7300rpm and it makes peak power at around 7000rpm.

At a later date I will post a complete run through to the limiter but for now thought Id show the difference at the same rpms between different RR's.

(This is not a dig btw simply a post to show how RR's do vary and that you cannot trust them as reliable info)

Yes Rick.

Tim are you running at bedford? ;)

It would have been better to show this at the same boost level - surely :p?

Karl, that a turbo gradually building the boost issue, or is it mapped like that - perhaps for traction? Either way - im lovin it :top:

it is the same boost up to 6000 read above lad keep up lol
:cry: :cry: :cry: :cry: :cry: :cry:

get it on the track fook the rollers :top:

I believed most of them made their power higher as they all pulled monster speeds without outragous gearing :D:D:D

I still think accel runs , loaded or not are dubious as you change the figures just by changing run rates etc.... I'm my head static load it and record BRAKED HP. But people dont like this as equiptment costs more to be reliable - temps are harder to control - takes longer.

Another problem on RR days are people sometimes dont take the time to set the wheels speeds accurately in the rush to run many cars - have seen this on many rolling road days over the country.

So basically at PE rollers the car couldn't do what it was mapped to do, i.e hold 23psi to 6k and then rise to 28Psi

because of the temps the ignition was being retarded i think you said before??

good graph :top:

tim have you drag raced christian yet?

surely they didnt go to Nobles for the purpose of doing a pe....

maybe theres a reason why the boost was different and that was why it was run on a RR


:top:

I mapped out an excel spreadsheet with the two bhp curves. It looks like the rollers are 500 rpm lower on PE than on Nobels. What I mean is, when I put a 500 rpm reduction onto the nobels rollers the graph lines up very nicely with the pe one and vice versa.

RW

Stevie, does that not confirm what martin is saying?

i.e. the revs are back-calculated from wheel speed?

he already said.. the boost rises at a set RPM. So it wasn't running any more boost! It runs more boost higher in the RPM and would have at PE if the revs would have gone high enough.

Neil S

Yeah, it would confirm that RPM are generated back from wheelspeed. However it sounds like rollers were set for a car that had larger wheels/gearing and they didnt reset it for Tims car.

As said, the graphs are pretty much identical until the final few RPM where on the nobels graph it rises.

I am also wondering why people run different boost on different days?

Cheers

RW

No need to wonder just read :p

:top: :top: :top: :top: Brilliant!

To all those people commenting on my query regarding the boost situation....

As Christian hit his limiter (set at 7+k), but registered significantly less :p.

Have I got this wrong

Everyone seems to say that the rollers under read his rpm and he actually pulled the 7k+ rev limit. Well if this was the case would he not have hit the 28psi boost? Or is the fact he didnt hit the high boost down to the Fan size and ACTs?

So basically, we don;t know what the true RPM was at PE.

Rick Correct,

From the graps I made with a lag of 500 rpm, the car hit roughly its correct rpm I a was also told the car was running less boost so my comment still stands.

RW

My car doesn't like rolling roads it goes bang at 5k lol on them, but never does this on the road :cry:

Correct :). Christian stated in the RR post though, that he hit his limiter....

Rick the car is mapped so that the boost increases as rpm does, as this aids traction by bringing the boost in progressively.

SO if the PE rollers were under reading rpm, and Tim pulled his limiter, why did he not hit 28psi boost? Is this due to the fans/poor act?

:top:

no it never hit the limiter and the peak recal on the defi was 1.5 not bar about 23 psi

PE rollers under read

PE roller over read


make your fucking minds up tards!!! :cry:

:top: Cheers