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Any one help me decipher a rolling road graph??? #882211
12/08/2009 21:27
12/08/2009 21:27

J
johnst
Unregistered
johnst
Unregistered
J



Im trying to decipher a rolling road printout of a cope a might buy but i dont know what looks healthy or not?

Re: Any one help me decifer a rolling road graph??? [Re: ] #882222
12/08/2009 21:37
12/08/2009 21:37
Joined: Mar 2007
Posts: 3,004
Leeds
M
MattM Offline
I need some sleep
MattM  Offline
I need some sleep
M

Joined: Mar 2007
Posts: 3,004
Leeds
Post it up

Re: Any one help me decifer a rolling road graph??? [Re: MattM] #882273
12/08/2009 22:45
12/08/2009 22:45

J
johnst
Unregistered
johnst
Unregistered
J



Matt did you have the porto blue 315bhp beaut? How do i post it up? any chance i can just email you it? cheers

Re: Any one help me decifer a rolling road graph??? [Re: ] #882274
12/08/2009 22:47
12/08/2009 22:47

J
johnst
Unregistered
johnst
Unregistered
J



I think it is your car thats my screen saver lol, your old one anyways!

Re: Any one help me decifer a rolling road graph??? [Re: ] #882276
12/08/2009 22:49
12/08/2009 22:49
Joined: Mar 2007
Posts: 3,004
Leeds
M
MattM Offline
I need some sleep
MattM  Offline
I need some sleep
M

Joined: Mar 2007
Posts: 3,004
Leeds
No that was MattW that had the Porto. I'll PM you my email, if you send me the graphs i'll post them on here for all to see

Re: Any one help me decifer a rolling road graph??? [Re: MattM] #882278
12/08/2009 22:52
12/08/2009 22:52

J
johnst
Unregistered
johnst
Unregistered
J



oh sorry lol cheers nearly bought that wish i had! il email them right away

Re: Any one help me decifer a rolling road graph??? [Re: ] #882280
12/08/2009 23:03
12/08/2009 23:03
Joined: Mar 2007
Posts: 3,004
Leeds
M
MattM Offline
I need some sleep
MattM  Offline
I need some sleep
M

Joined: Mar 2007
Posts: 3,004
Leeds
click to enlarge

Looks a bit odd to me, but i can't really tell you much without seeing boost or AFR data. Anyone else got any ideas?

Re: Any one help me decifer a rolling road graph??? [Re: MattM] #882284
12/08/2009 23:18
12/08/2009 23:18

E
eldinho
Unregistered
eldinho
Unregistered
E



why does it stop at 4000rpm?

Re: Any one help me decifer a rolling road graph??? [Re: ] #882294
12/08/2009 23:38
12/08/2009 23:38

J
johnst
Unregistered
johnst
Unregistered
J



I dont know i just had it emailed to me in that form it looks strange to me also i thought it was just my novice showing thro! ha

Re: Any one help me decifer a rolling road graph??? [Re: ] #882312
13/08/2009 02:16
13/08/2009 02:16
Joined: Dec 2005
Posts: 1,895
New Zealand
Saint Offline
My life on the forum
Saint  Offline
My life on the forum

Joined: Dec 2005
Posts: 1,895
New Zealand
Looks like the revs are wrong or the graph is far to short, the curves are a bit all over as well

You really need fuel (AFR), boost, torque and BHP up to redline to draw any conclusions


Re: Any one help me decifer a rolling road graph??? [Re: Saint] #882330
13/08/2009 07:42
13/08/2009 07:42
Joined: Dec 2005
Posts: 5,405
Castle Combe
Flea Offline
Forum is my life
Flea  Offline
Forum is my life

Joined: Dec 2005
Posts: 5,405
Castle Combe
Ok basically that graph is saying you have a peak torque of 398lbs/ft @ 3300rpm and 250bhp @ 3359rpm.

Do you have a turbo diesel by any chance? laugh


[Linked Image]

Re: Any one help me decifer a rolling road graph??? [Re: Flea] #882373
13/08/2009 09:44
13/08/2009 09:44
Joined: Dec 2005
Posts: 8,418
Lightwater, Surrey
DaveG Offline
Club Treasurer Member 311
DaveG  Offline
Club Treasurer Member 311
Je suis un Coupé

Joined: Dec 2005
Posts: 8,418
Lightwater, Surrey
I would guess that the RR didn't correct for it being 5 cylinders, maybe they assumed 4, so max revs = 5/4 x 4000 = 5000 (still looks wring, should go to 5800 max IIRC), but whatever, the curves do look odd, the pulsating there is probably due to the standard EBV.

But if it were a TD engine, wouldn't the peak @ rpm figures be at lower rpm?


1996 Portofino 20vt & 2000 Pearl White Plus
1985½ & 2016 2017 Fiat 124 Spider + XF Sportbrake
Re: Any one help me decifer a rolling road graph??? [Re: Flea] #882374
13/08/2009 09:45
13/08/2009 09:45

J
johnst
Unregistered
johnst
Unregistered
J



So basically the guy says he had it done on a rolling road at a motor show and they emailed him this..........sooo it makes 250 bhp is about as much info i can get from it anyways, thats if it belongs to a coupe! cheers guys, anyone with a nice coupe £3k mark give me a shout!


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