M6 power output |
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Horsetan
Really Senior Member II Say Neigh to Gatsos Joined: 11-April-2003 Location: Please let it be Ireland Status: Offline Points: 6381 |
Posted: 20-April-2004 at 18:36 | |
Are Ye Right There, Father....? |
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MickHarris
Newbie Joined: 21-April-2004 Location: Wales Status: Offline Points: 15 |
Posted: 21-April-2004 at 10:09 | |
theres no way on earth that a car showing 226bhp at the wheels is only giving 240 at the flywheel, thats a loss of just 6%.
15% is more likely, and with the wheesl figure at 226bhp it wud give roughly 265bhp at the fly. still not as good as it shud be, but not bad considering the age and mileage of most M635's |
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Horsetan
Really Senior Member II Say Neigh to Gatsos Joined: 11-April-2003 Location: Please let it be Ireland Status: Offline Points: 6381 |
Posted: 21-April-2004 at 11:09 | |
Don't worry too much about the statistics. When you've been on here long enough, you will notice that there are times when "Sohlman's" enthusiasm gets the better of him...! |
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Sohlman
Really Senior Member II Coupe Chairman Joined: 19-August-2003 Location: Surrey Status: Offline Points: 1259 |
Posted: 21-April-2004 at 21:53 | |
Well i don't know much about rolling roads as you can tell, but i will possible know more as there is one comming up organised by Nigel that i may take the old girl to and after that day i should know more.
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Sunday 10th July Brooklands Sharkfest and Big Coupe Day. Coupe Events
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MickHarris
Newbie Joined: 21-April-2004 Location: Wales Status: Offline Points: 15 |
Posted: 22-April-2004 at 00:40 | |
15 - 17% is the general loss from a rwd.
most decent rr's will give u a figure for wheels and an extrapolated one for the flywheel (worked out thru coastdown transmission losses altho this isnt always totally accurate) just make sure u use a decent rr really |
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RossM6/635csi
Newbie Joined: 24-March-2004 Location: United Kingdom Status: Offline Points: 10 |
Posted: 02-May-2004 at 21:52 | |
Good evening gang May i will be able to shed some light on this subject . I have a very late M6 and its going to Black and White Racing in Aylesbury later this week to go on their rolling road to get the BHP checked . Will keep you informed. Ross |
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Andyboy
Banned User Joined: 04-June-2003 Status: Offline Points: 707 |
Posted: 02-May-2004 at 22:06 | |
Until last year my Dad (Ex BMW GB) owned AmD and in his time dynoed a few M635CSi's. Late ones are generally down on power. A well known car belonging to Ron Creed ( a lovely grey F plater seen on many track days) was down to 240 bhp but a remap of the ECU brought it back up to over 280 bhp - the difference was amazing so it's just the ECU.
Although semi retired he could borrow a dyno and remap an M6 properly - beware these nasty plug in chips because they don't work properly. Don't forget that an old car like this will need something custom made to get the best from it. If anyone wants it done, send me a mail and I'll see what I can do. He's in the Oxford area by the way. Edited by Andyboy |
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Horsetan
Really Senior Member II Say Neigh to Gatsos Joined: 11-April-2003 Location: Please let it be Ireland Status: Offline Points: 6381 |
Posted: 03-May-2004 at 13:51 | |
Academic question only at the moment, Andyboy, but what is the position regarding "standard" 635CSis, particularly those from 1983 (this is of interest not only to me, but to one or two others with 1983 cars)? Is it possible to "re-map" the ECUs in these, or are they permanently fixed? |
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Jonners
Really Senior Member II Joined: 23-September-2003 Status: Offline Points: 601 |
Posted: 14-May-2004 at 18:35 | |
One point worth mentioning here is that the Highline M6's weighed a ton compared with the early ones.
And wot's the point of having a leather dashboard - almost turned a lovely car into a hairdresser's carriage. Aplogies to Highline owners out there.... |
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Brucey
Really Senior Member II Joined: 07-March-2004 Location: United Kingdom Status: Offline Points: 744 |
Posted: 14-May-2004 at 21:54 | |
-likewise I'd like to know what can be done with the ECU of a 635CSi 82-86 vintage..... -I'm sure anything is possible in principle, but there is no substitute for someone having done it before, and able to say 'yup, I can do it again...' cheers
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~~~~~~~ Brucey ~~~~~~ |
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Horsetan
Really Senior Member II Say Neigh to Gatsos Joined: 11-April-2003 Location: Please let it be Ireland Status: Offline Points: 6381 |
Posted: 14-May-2004 at 23:29 | |
It just so happens that an acquaintance of mine in the Bromsgrove area might be able to shed some light on that in the near future... |
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AndyS
Really Senior Member II The Last of the Few Joined: 21-August-2003 Location: 55 � North Status: Offline Points: 1365 |
Posted: 16-May-2004 at 20:07 | |
Rather like my leather dash actually - if it's good enough for Alpina, Aston Martin, Ferrari etc.
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Peter Fenwick
Bavarian-Board Contributor Joined: 27-August-2003 Location: Lost somewhere in time... Status: Offline Points: 6484 |
Posted: 17-May-2004 at 09:57 | |
I have to admit I quite like the idea of a leather dash too. Has to be a lot better than plastic.
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Entering an age of Austerity and now driving a Focus Diesel.
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Jonners
Really Senior Member II Joined: 23-September-2003 Status: Offline Points: 601 |
Posted: 20-May-2004 at 14:34 | |
Astons and Ferraris ARE hairdressers' cars
It's unfortunate that this style crime was perpetrated on Alpinas too Only kidding... The thing is that the leather might be nice to have but the performance of the later cars suffered. That wouldn't put hardressers off tho...but then again few people are going to chose any BMW for the interiors. ?performance -v- pose value? Very subjective/emotive issue |
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Peter H
Really Senior Member II Joined: 03-January-2004 Location: Worcestershire/Ost Bayern Status: Offline Points: 927 |
Posted: 23-May-2004 at 09:09 | |
You know someone up here ??? |
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Das Wolperdinger
AHN-NYUNG-HEE GA-SEH-YO |
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Horsetan
Really Senior Member II Say Neigh to Gatsos Joined: 11-April-2003 Location: Please let it be Ireland Status: Offline Points: 6381 |
Posted: 23-May-2004 at 16:13 | |
Yes, but only one.... |
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RossM6/635
Groupie Joined: 26-May-2004 Location: Hampshire Status: Offline Points: 63 |
Posted: 27-May-2004 at 12:16 | |
Hi fellow M6 lovers I will to try and help with this power question on the M6 . I have had Geoff Everett ( ex AMD ) and Andyboys dad, play with my 1989 M6 . He meet me at Black and White Racing where we put the car on their rolling road . Well the power was well down , so he set to work on remapping the chip and also resetting the thottle , as it only opened 75 % . The car now shows 225 BHP at the wheels, and 299.9 BHP at the flywheel. Obviously the flywheel reading is the machines best estimate by mesuring the drag of the drive train etc . Can i suggest if you have any problems or want to get your cars checked then speak to Andrews dad . Geoff and Black and White racing were very good . Await your replies Ross
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Peter Fenwick
Bavarian-Board Contributor Joined: 27-August-2003 Location: Lost somewhere in time... Status: Offline Points: 6484 |
Posted: 27-May-2004 at 16:07 | |
Jonners Er... not sure why you think Ferraris and Astons are hairdressers cars. They could be decribed as many things but not that. I believe the aston DB7 was designed with golf playing executives in mind. Also it's not a bit of leather on the dashboard that makes perfomance suffer. All TVRs have leather dashboards and they all weigh less than £1100Kg. You might question the reliabillirty of TVRs but their performance is almost unparralled for the price. What makes cars slow is the huge ammount of gadgets such as heated, electric memory sun visors, 75 airbags, Stabillity control and the 50 other devices that make up for the drivers lack of skill. Expensive, fast cars are as much about how they make you feel as how fast they go and a bit of leather on the dash just makes the car feel that bit more special than having to look at a big chuck of plastic. Get rid of the electric heated seats and keep the leather dash! |
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Entering an age of Austerity and now driving a Focus Diesel.
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Horsetan
Really Senior Member II Say Neigh to Gatsos Joined: 11-April-2003 Location: Please let it be Ireland Status: Offline Points: 6381 |
Posted: 27-May-2004 at 18:21 | |
Ross: I am told Andyboy is currently suspended from the Forum for a month, but may return. Any direct contact details for Geoff Everett? |
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Peter Fenwick
Bavarian-Board Contributor Joined: 27-August-2003 Location: Lost somewhere in time... Status: Offline Points: 6484 |
Posted: 28-May-2004 at 09:49 | |
[/QUOTE] Why what did he do?? or is that information top secret!! BTW how do you do that thing where you quote someone else and it comes up in a white box with 'joe bloggs wrote' in black above. Edited by Peter Fenwick |
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Entering an age of Austerity and now driving a Focus Diesel.
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