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Jimbob 
Bavarian-Board Contributor 
Joined: 27-July-2005 Location: Live: West Sussex - Work: Islington Status: Offline Points: 190 |
 Posted: 09-January-2006 at 15:20 |
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Oi! My exhuast (blowing back box) and my oil drip (back of the head) won't be fixed in time, so no high rev runs for me - but I might make it as a spectator. *edit* by the way James, where do I send my fiver for the coupe register? Edited by Jimbob |
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And so says Jimbob.
1981 635csi 81k miles. Will be fixed, but not by me. |
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Drew540i
Really Senior Member II 
Available from all good newsagents! Joined: 15-August-2005 Location: The Mansfield Massive Status: Offline Points: 632 |
Posted: 10-January-2006 at 06:28 |
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Oi!
That's a poor excuse! The oil drip is either a cam cover gasket, or more likely a leaking oil pressure switch. The rear exhaust can be successfully bodged using 'red welding', fibreglass filler used for car bodywork. It sets rock hard and resists exhaust heat in centre boxes, never mind the (cooler) rear box. I rebuilt an E23 rear box with this stuff and it lasted almost 18 months........ Get it on the rollers! It'd be nice to see it, love the colour and the 14 inch Mahle rims - classic stuff. |
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Sohlman
Really Senior Member II
Coupe Chairman Joined: 19-August-2003 Location: Surrey Status: Offline Points: 1259 |
Posted: 17-January-2006 at 17:55 |
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OK, We now have this day confirmed and Booked. I have now paid a sizable deposit I have 10 cars confirmed 8 deposits paid and awaiting 2 checks. I have 5 spaces left Total BMW will almost certainly be in attendance to cover the event as i now have a guaranteed 10 cars. See some of you there soon. James |
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 Sunday 10th July Brooklands Sharkfest and Big Coupe Day. Coupe Events
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86C
Newbie 
Joined: 27-November-2005 Location: Nottingham Status: Offline Points: 31 |
Posted: 12-February-2006 at 19:24 |
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If I get the chance, I'd like to make it down to this, but only as a spectator. I'll be the odd bod in the old yellow Polo. (and a free bump for this post for those who've forgotten it!) |
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Sohlman
Really Senior Member II
Coupe Chairman Joined: 19-August-2003 Location: Surrey Status: Offline Points: 1259 |
Posted: 13-February-2006 at 11:35 |
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NEWS FLASH Had a slightly bad day today. Having confirmed with G Force on Friday and then banked all cheque on Saturday for the rolling road day. Imagine my dissapointment when i am phoned on Monday to be told that G force wish to cancel the day due to their staff being on holiday. (As if they did not know that on Friday) (Please insert swear words hear) So not wishing to cancel the rolling road day i have spent all day today trying to sort out a new venue. Through grovling, pleading and bartering i have managed to secure a different rolling road for the day. Thats the good news. The bad news is that they will have to limit it to 10 cars which is fine as that is how many we have booked in now as i have had 1 cancellation. We will be sqeezed in around the other work they have on on that day. So the new venue is: - They have asked that all people arrive at 8:30 ready to start at 9am sharp. They welcome spectators and anyone is welcome to attend and you never know at the end of the day they may have time to do a couple more runs. For a map go onto www.multimap.com and type in the above postcode. For general directions follow the signs for Uxbridge and then follow the signs for the industrial estate which i am told is well sign posted and you can't go to far wrong. If anyone has any questions please feel free to call me PM me and i will give you my mobile number. People booked in and paid are: -
Edited by Sohlman |
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Sunday 10th July Brooklands Sharkfest and Big Coupe Day. Coupe Events
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Robmw
Really Senior Member I 
Joined: 29-August-2005 Location: Epping Status: Offline Points: 311 |
Posted: 13-February-2006 at 14:51 |
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James ,
Well done at such short notice . Power Engineering have a good rep with the Ford Cosworth brigade |
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Robert Born
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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: 13-February-2006 at 17:46 |
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Anyone else wanting to come and see the old girls shaking their booty is free to come and have a look
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RossM6/635
Groupie
Joined: 26-May-2004 Location: Hampshire Status: Offline Points: 63 |
Posted: 18-February-2006 at 14:38 |
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Well done James , a great morning seeing how the old girls performed . And also well done Power Engineering .
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Ross
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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: 18-February-2006 at 19:32 |
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And here are some of the usual suspects, waiting their turn on the rollers.....
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Sohlman
Really Senior Member II
Coupe Chairman Joined: 19-August-2003 Location: Surrey Status: Offline Points: 1259 |
Posted: 19-February-2006 at 05:36 |
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Please find the results of the day below. I have tried to work out flywheel figures for the cars which are always a little bit hit amd miss due to most of the cars being auto's, but the rear wheel figures are acurate. On the 3 manual cars the transmission losses ranged from 20% to 29% Was very pleased with my results. 159bhp at wheels 222bhp at flywheel and 256ft/lbs or torque. When went there last year i achieved 207bhp at flywheel and 246ft/lbs of torque. So the induction system i designed and made and the Fritz manifold between then has given a 15bhp improvement in power and 10ft/lbs increase on torque and the car has done 18,000 miles between runs so should be worse rather than better. I hope all that went enjoyed the day, although it is clear that some cars need some work. James |
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Sunday 10th July Brooklands Sharkfest and Big Coupe Day. Coupe Events
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Brucey
Really Senior Member II
Joined: 07-March-2004 Location: United Kingdom Status: Offline Points: 744 |
Posted: 19-February-2006 at 06:07 |
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Thanks for organising this James, all a bit of a hoot. I have been wondering about the vexed subject of transmission losses; I wonder if they are much different for auto cars? If not then we had a lot of cars that didn't get close to stock power output, and the best auto 635CSi (which has been remapped and only has 75 K on the clock) still didn't quite make stock power, where I'd have guessed ~230bhp ought to be on the cards.... My own 150000 mile specimen sounded (and for a change also looked) better than it went, ho hum.... but at least it didn't smoke too heavily; I thought poor Ivan was going to have a heart attack.... Incidentally my chum Mark is presently ignoring his wife and child in order to compile a load of stills and video of the day (about 250MB so far). I will make copies on a CD for anyone who wants one. If anyone has further pictures I can add them to the compilation disc, just PM me and then post me your disc (not broadband yet...) cheers
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~~~~~~~ Brucey ~~~~~~ |
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3.0csl
Senior Member I 
Joined: 21-June-2004 Location: London Status: Offline Points: 139 |
Posted: 19-February-2006 at 07:16 |
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James, thanks for the day, it was very good fun and worthwhile. As james noted in the spreadsheet we headed back to Bird's place where Phil operates out of and he very kindly had a look at my car. We found that with the pedal fully down the throttle was not fully open and had about 1/3" left to travel. Having gone on a trip last night I can confirm that the car has been transformed and I can't wait to get it back on the rollers. regards,
Rohan |
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Rohan Murphy
3.0 csl 2285146 3.0 csl 2275522 |
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286bhp
Groupie
Joined: 27-January-2005 Location: Herts & Middx Status: Offline Points: 88 |
Posted: 19-February-2006 at 08:56 |
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Rohan,
glad to note you can feel the difference, as you said , can't wait to see her back on the rollers. Regards Phil |
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'01 M5
'02 MB C220 Turbosmoker '99 323i (sold ) '89 M3 220hp with shrick 284's '73 2002 cab it's an Illness ...... |
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3.0csl
Senior Member I
Joined: 21-June-2004 Location: London Status: Offline Points: 139 |
Posted: 19-February-2006 at 11:18 |
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Phil, I can really feel the difference up the top. It was good fun last night experimenting with it! Might book her on the rollers somewhere next weekend! Will et you know how i get on. Very grateful for you having a look at her and finding the problem. Regards,
Rohan |
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Rohan Murphy
3.0 csl 2285146 3.0 csl 2275522 |
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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: 19-February-2006 at 11:36 |
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Oh thanks
It seems to be hereditary, so I'm probably due a major one in 10 years' time. Better start taking the Simvastatin.....
OK, I'll have one then!
You'll find a limited number of pics in THIS GALLERY Here's the nitrous-fitted one:
...whilst this one was amusing:
Edited by Horsetan |
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Drew540i
Really Senior Member II
Available from all good newsagents! Joined: 15-August-2005 Location: The Mansfield Massive Status: Offline Points: 632 |
Posted: 19-February-2006 at 12:09 |
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It's around 40% on an automatic. The other problem
is that automatics don't have engine braking so getting 'real' figures is very hard. 145 bhp at the wheels is about 200 flywheel. But, how many of you were running Shell Optimax? These engines were designed a very long time ago to run on 99 Octane fuel, not the 95 Octane crap you guys were probably using! 
I daresay you lost a good 10 bhp running 95 fuels. For example, the much maligned E36 M3 Evo which 'never does 321 bhp' will in fact make it's money with decent fuel. Run it on 95 and it will lose around 20 bhp. As for Ivan's car, I would imagine this was a problem with the crankcase breather. It certainly didn't smoke when he drove up the road - I had the same problem with a 528i E28. His low power figure was due to the fuel octane being further (dramatically) reduced by oil burning. Generally though, 25 year old engines don't like too much 5500 rpm action tho! 
Good day all round though - well done Mr Sohl. |
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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: 19-February-2006 at 12:15 |
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Not me. I topped up my LRP (Sainsbury's 97 RON), but to ensure proper poisoning of you lot
98.
My engine was having a "senior moment" I received a phone call in the evening from a certain someone who reckoned I'd be better off using 20w-50 oil rather than 10w-40....
Edited by Horsetan |
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UKDaveJ
Really Senior Member II
Joined: 18-November-2004 Location: Bromsgrove, Worcestershire Status: Offline Points: 529 |
Posted: 19-February-2006 at 12:22 |
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Thanks to James & Power Eng, I really enjoyed the day, but am now somewhat confused having read through the excel doc of figures.
James, your figures indicate 63bhp loss with a manual box. Mine, an auto Highline, shows est 57bhp loss. In fact, using the 'assumption' conversion multiplication for auto flywheel figs based on their genuinely achieved at the wheel figs, also adds to the confusion. The average auto loss equates to 54 bhp (only the Nos run figures ignored), which doesn't make sense. Yet, your manual James was showing 63bhp loss.......??!! The auto's have to be losing more power than the manuals I'd have thought, thereby actually pushing up their estimated flywheel figures to 200bhp+. I'm now confused. |
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My 635'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: 19-February-2006 at 12:30 |
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Not as confused as me. I don't know whether it's the crankcase breather, or whether I need a new bottom end |
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Sohlman
Really Senior Member II
Coupe Chairman Joined: 19-August-2003 Location: Surrey Status: Offline Points: 1259 |
Posted: 19-February-2006 at 12:38 |
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With the figures the only car i did not have a rear wheel figure for was mine. Typical. I remember it being 159 on the guage on the dyno, but did not see the computer screen figure due to it being manual they worked out the figures including losses. So i used the 159 for purposes of comparison it was probable a little higher than this as it was with the all the auto's. I then worked out what i had to multiply this by to get 222bhp. Then i took this scalling factor 1.4 and multiplied all the auto figures by this to give a like for like comparison of flywheel power as this is what we understand. So basically i have multiplied your wheel figures by 40% which should be about right. How acurate they are i can't say, but they are just there to give an idea. They are a lot lower than i was exspecting i have to be honest. James |
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Sunday 10th July Brooklands Sharkfest and Big Coupe Day. Coupe Events
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E24 6 series Rolling Road Shootout
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Horsetan wrote:
, I should have drained the tank and put proper 4-star leaded in (nowadays rated at 99.6RON)