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Jul 17, 2013 19:53:31 GMT
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Apologies if there's already a thread for this but its new to me lol. Stumbled on this while looking up donks for the lifted thread. The principal seems to be overfuelling your diesel to produce smoke. The childish part of me loves this:-) makes me think of the truck in Duel:-) Some great examples on YouTube too:-)    |
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89 Masterace Surf
03 Astra
03 V40 Sport
09 E90 M Sport
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VIP
South East
Posts: 8,301
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Jul 17, 2013 21:53:27 GMT
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Apologies if there's already a thread for this but its new to me lol. Stumbled on this while looking up donks for the lifted thread. The principal seems to be overfuelling your diesel to produce smoke. The childish part of me loves this:-) makes me think of the truck in Duel:-) Some great examples on YouTube too:-) Someone will confirm this, but I'm certain its not done for effect, its a side-effect of running big boost and higher fuelling. Still cool though. |
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sowen
Club Retro Rides Member
Posts: 2,245
Club RR Member Number: 24
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Rollin' Coalsowen
@sowen
Club Retro Rides Member 24
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Jul 17, 2013 22:18:30 GMT
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Too much fuel and not enough boost  , but looks mighty cool! |
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fred
Posted a lot
WTF has happened to all the Vennies?
Posts: 2,957
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'79 Cossie ran Cortina - Sold
2000 Fozzer 2.0 turbo snow beast
'85 Opel Manta GSI - Sold
03 A class Mercedes
Looking for a FD Ventora - Anyone?
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randywanger_
Part of things
Nissan Bluebird P510 SSS Coupe
Posts: 946
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matty2300
South East
Red ones go faster!
Posts: 157
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I guess on a lot of street cars its done for silliness, but for tractor pulls it's more likley down to the HUGE boost being run and the persuit of HUGE POWER! From This Place"These classes are utilizing engines that were designed for 466 cid and pushing them to 680 cid, and then they put 100-300 psi of boost on top of that, depending on the class" I've always liked tractor pulling.. I think that just made me like it a little more  also just found this on a random Diesel forum, don't know how true it is but it sounds feasible.. "For an elemental fuel such as hydrogen, the stoichiometric air/fuel ratio is the hottest burning and maximum energy-releasing air/fuel ratio. Lean mixtures dilute and quench the mix with unused air; rich mixtures dilute and quench the mix with unburned fuel. Diesel fuels are a little different. They contain about 85% carbon and 15% hydrogen. At stoichiometry, all the oxygen is consumed. When you enrich the mixture beyond stoichiometry, you continue to consume all the oxygen, but the hydrogen in the fuel begins to preferentially consume the oxygen instead of the carbon. Hydrogen having a much greater heat content than carbon, you get more heat (and power) out of the combustion process and a higher temperature, despite the unburned carbon passively soaking up some of that heat. Fuel efficiency and emissions, of course, go to Helena Handbaskett." |
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Last Edit: Jul 18, 2013 9:32:58 GMT by matty2300
2002 Saab 93 - Daily
1972 Vauxhall Firenza Sport SL - in storage
1978 Vauxhall Magnum - PROJECT
1993 Vauxhall Cavalier 2.0 GLS - DEAD
1994 Vauxhall Astra 1.4 LS - DEAD
1999 Saab 93 2.0 SE - DEAD
1999 Mercedes W202/C200 - DEAD
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Once they come to full boost, the smoke dissappears mostly - smoke is a sign of unburnt fuel, I.e. lack of air or in other words more fuel than air available to burn it. Once the turbo provides enough air, all fuel can be burnt = maximum power/efficiency. My turbodiesel has a boost-sensitive device that retards fuel delivery untill boost is present to avoid black smoke. It also senses atmospheric pressure to avoid smoke in high altitudes. If a diesel turbo engine smokes black under full boost - well, something's wrong  Or the owner has a giggle. I'm tempted to make mine smoke black - but then I like the fact that it doesn't smoke at all, unlike those modern TDCDTTCDBLAHi lumps |
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Jul 18, 2013 10:50:12 GMT
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I don't endorse being a dick to other people, but this made me chuckle....
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1986 Panda 4x4.
1990 Metro Sport.
1999 Ford Escort estate.
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MrSpeedy
East Midlands
www.vintagediesels.co.uk
Posts: 4,791 
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Jul 18, 2013 12:43:53 GMT
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That is amusing, in a childish way.
[Clarkson]Bloody cyclists![/Clarkson]
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sowen
Club Retro Rides Member
Posts: 2,245
Club RR Member Number: 24
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Rollin' Coalsowen
@sowen
Club Retro Rides Member 24
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Jul 18, 2013 13:10:48 GMT
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Once they come to full boost, the smoke dissappears mostly - smoke is a sign of unburnt fuel, I.e. lack of air or in other words more fuel than air available to burn it. Once the turbo provides enough air, all fuel can be burnt = maximum power/efficiency. My turbodiesel has a boost-sensitive device that retards fuel delivery untill boost is present to avoid black smoke. It also senses atmospheric pressure to avoid smoke in high altitudes. If a diesel turbo engine smokes black under full boost - well, something's wrong Or the owner has a giggle. I'm tempted to make mine smoke black - but then I like the fact that it doesn't smoke at all, unlike those modern TDCDTTCDBLAHi lumps I guess you've got one of those ALDA things on you're pump, I've got an OM605 engine I'm slowly building up, with a n/a OM602 pump, I'm toying with the idea of leaving it as is so it blows smoke off boost, or having the external ALDA kit fitted, and seeing if there was a way to 'temporarily' turn it off Get it wrong or push it too hard whilst blowing smoke and this can happen  I think that was just taken out of the current BlackSmokeRacing drift estate car! |
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Jul 18, 2013 13:24:50 GMT
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The mighty ALDA, yes.  The piston is indeed from this beast:   ^most awesome team bus ever, btw. |
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Jul 18, 2013 14:36:16 GMT
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this is a big thing in Northern Ireland, mixture of 306 dturbos, xzaras, zx and well basically any diesel combined with a straight through exhaust, screwed out fuel pump in the case of 306s and red diesel, agricultural diesel and ive even heard of people adding oil to their fuel to make it smoke better, cars often get 3 sides washed with the bootlid left "reeked" as a badge of honour...
"no smoke, no poke" ... apparently!
Wheras on the other end of the scale black smoke racing are amazing, can never tell which cloud is bigger, diesel fumes or tyre smoke, must admit i liked the original merc better though, this one seems to have been plagued with problems but they are dedicated thats for sure, driving that coach to the uk for the bdc!
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Jul 19, 2013 21:31:44 GMT
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It is a side effect of controlling exhaust temperatures |
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Jul 19, 2013 21:35:26 GMT
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There's a Facebook page for it lol
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89 Masterace Surf
03 Astra
03 V40 Sport
09 E90 M Sport
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Jul 19, 2013 22:53:29 GMT
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Little video of my old jetta doing a bit of coalin
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, but looks mighty cool!
Or the owner has a giggle.
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