rolling road let - Corsa Sport - for Vauxhall and Opel Corsa B, Corsa C and Corsa D

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john_c20xe

Member

Registered: 10th Feb 08
Location: Eastbourne, EastSussex
User status: Offline

29th Aug 09 at 16:14

just been to a local garage rolling road to get my c20let corsa on the rollers to see what it is actually putting out,
i got told the engine was at 278 bhp and 308 pounds of tourque,

was suprised today it made 314.2 bhp and 340 pounds of tourque,

does this sound about right for just phase two software?

Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline

29th Aug 09 at 16:16

what was it at the wheels?

Sounds quite high to me but i dont know much about 'phase' tuning.

What boost, What gear?

Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline

29th Aug 09 at 16:17

thats also a shit load of torque

john_c20xe

Member

Registered: 10th Feb 08
Location: Eastbourne, EastSussex
User status: Offline

29th Aug 09 at 16:18

was at 5 gear with five people inside it and 3 ratchet straps holding it down,
15psi of boost,
didnt get at the wheels hp,
they think the actuator was leaking tho as it hit boost and dropped off at the end

Eck

Premium Member

Registered: 17th Apr 06
Location: Lundin Links, Fife
User status: Offline

29th Aug 09 at 16:18

To me that sounds like a big over reading!

Jamie_Hastings1

Member

Registered: 14th Aug 08
Location: Sanquhar, Dumfries and Galloway
User status: Offline

29th Aug 09 at 16:19

I thought phase 2 was 280bhp

Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline

29th Aug 09 at 16:21

phase 2 is supposed to be about 280bhp and similar torque

I wouldnt put much faith in your readings

5th gear (do you have an F28?) ?

Best test of power is 1/4mile.... see what terminal speed it gets.

Eck

Premium Member

Registered: 17th Apr 06
Location: Lundin Links, Fife
User status: Offline

29th Aug 09 at 16:22

That's what Regal say, and they are well known for their ridiculous optimism

john_c20xe

Member

Registered: 10th Feb 08
Location: Eastbourne, EastSussex
User status: Offline

29th Aug 09 at 16:22

there was a few cars before me and they all hit the same bhp they had from their mappers rollers

Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline

29th Aug 09 at 16:22

1bar ish....... on what turbo

john_c20xe

Member

Registered: 10th Feb 08
Location: Eastbourne, EastSussex
User status: Offline

29th Aug 09 at 16:23

its got an f20 box, and vaux show i got a 14.2 in the damp at 126 mph

john_c20xe

Member

Registered: 10th Feb 08
Location: Eastbourne, EastSussex
User status: Offline

29th Aug 09 at 16:23

i want to know what the engine has had done to it the person i bought the lump off said to be it had phase two software but had no proof

Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline

29th Aug 09 at 16:25

quote:
Originally posted by john_c20xe
there was a few cars before me and they all hit the same bhp they had from their mappers rollers

what gears were they run in? Its easy to get an overreading....

You really need to compare WHEEL figures.

john_c20xe

Member

Registered: 10th Feb 08
Location: Eastbourne, EastSussex
User status: Offline

29th Aug 09 at 16:27

they were done it 3rd gear, but mine just span up in 3rd and forth so they done it in 5th,

tried ratcheting it down had straps going throught the cage and a couple of people wieging it down but just span up

Eck

Premium Member

Registered: 17th Apr 06
Location: Lundin Links, Fife
User status: Offline

29th Aug 09 at 16:27

Normally they are run in 3rd or 4th are they not?

Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline

29th Aug 09 at 16:28

quote:
Originally posted by john_c20xe
its got an f20 box, and vaux show i got a 14.2 in the damp at 126 mph

ok.... top gear! That wont help.

I'd ignore the results.

john_c20xe

Member

Registered: 10th Feb 08
Location: Eastbourne, EastSussex
User status: Offline

29th Aug 09 at 16:29

quote:
Originally posted by AK

quote:
Originally posted by john_c20xe
its got an f20 box, and vaux show i got a 14.2 in the damp at 126 mph

ok.... top gear! That wont help.

I'd ignore the results.

what do you mean by that?

Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline

29th Aug 09 at 16:34

i mean it doesnt sound like the rollers were calibrated correctly.

You have huge torque figures, and about 40bhp more than optimistic figures for phase 2 at 15psi

running it in 5th gear is a sub 1:1 ratio too... so it suggets the RR is under reading

[Edited on 29-08-2009 by AK]

john_c20xe

Member

Registered: 10th Feb 08
Location: Eastbourne, EastSussex
User status: Offline

29th Aug 09 at 16:35

i thought it was pretty good really but just wanted your views, they seem a good company too, mainely into fords but they was impressed with the little corsa

john_c20xe

Member

Registered: 10th Feb 08
Location: Eastbourne, EastSussex
User status: Offline

29th Aug 09 at 16:35

quote:
Originally posted by AK
i mean it doesnt sound like the rollers were calibrated correctly.

You have huge torque figures, and about 40bhp more than optimistic figures for phase 2 at 15psi

yeh thats what i mean im wondering if its had more stuff done to it than phase 2 software?

john_c20xe

Member

Registered: 10th Feb 08
Location: Eastbourne, EastSussex
User status: Offline

29th Aug 09 at 16:41

cheers for the comments tho

Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline

29th Aug 09 at 17:05

The coastdown losses (whatever it is that they are actually measuring) are rising much more in a higher gear than the actual transmission losses are, leading to larger "flywheel" bhp figures in the higher gears

see http://www.pumaracing.co.uk/coastdwn.htm

broster

Premium Member

Registered: 6th Dec 02
Location: Drives: E39
User status: Offline

29th Aug 09 at 18:15

quote:
Originally posted by AK
The coastdown losses (whatever it is that they are actually measuring) are rising much more in a higher gear than the actual transmission losses are, leading to larger "flywheel" bhp figures in the higher gears

see http://www.pumaracing.co.uk/coastdwn.htm

depends on the rolling road, some dont use the coast down to measure the transmission losses, dyno dynamics for example just use a forumla and guess the losses......

maha use the run down.

the run down on a well calibrated rolling road is an acurate way of showing the flywheel figure from experience.

id say that your results are high tho, if the car suffered from wheel spin it would account for the figure.

SportBoy

Member

Registered: 5th Oct 01
Location: Retford, Nottinghamshire
User status: Offline

29th Aug 09 at 19:36

yeah do seem abit hight .. ive allways been led to belive the standard turbo runs out of breath at about 280 and anything else is a bonus .. good if its a true reading tho!

.. unless you have a hybrid turbo or somthing?

allso the dropping off at high revs will prob be the turbo and not the actuator if its holding 15psi

Cole

Member

Registered: 11th Nov 02
Location: eastbourne Drives:zafira sold now a qashqai
User status: Offline

29th Aug 09 at 20:24

john where did you go wasnt gerrald dales was it if it was then his rep aint that great for rr`s

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