VIP
South East
Posts: 8,293
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Can you ditch most of the (sparse) interior? Lightweight buckets would help bring the weight down a bit. It's really not worth doing so, as Rysz says the OP is going to need the interior! Rear seats absorb and block a considerable amount of road noise from the rear wheels, so I would keep that as well. VIP, is it 75 miles each way, or all together? Either way, it sounds like an interesting project and a good starting point. Its 75 miles total, almost entirely motorway, and yes, I do want to keep it as 'complete' as possible. I may have to make compromises later down the road, but at the start, only things which do not detract it from being as functional and comfortable as possible will be done.
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1) top quality engine oil (castrol) 2) fresh gearbox oil (castrol syntrans) 3) air filter 4) tyres up to 40psi 5) lowered suspension 6) limit the movement of the accelerator pedal so you only get 3/4 (no what) 7) lighter wheels and taller skinny tyres 8) passenger wing mirror delete 9) renew engine sensors
if you are serious then get a "mpguino" kit too
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VIP
South East
Posts: 8,293
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Mar 11, 2014 10:03:48 GMT
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1) top quality engine oil (castrol) 2) fresh gearbox oil (castrol syntrans) 3) air filter 4) tyres up to 40psi 5) lowered suspension 6) limit the movement of the accelerator pedal so you only get 3/4 (no what) 7) lighter wheels and taller skinny tyres 8) passenger wing mirror delete 9) renew engine sensors if you are serious then get a "mpguino" kit too Actually, if you are adopting 'pulse and glide' techniques, the most efficient throttle position is WO T. I don't think the SDI has any engine sensors, its a very simple agricultural lump. I've got an eye on a couple of s/h ScanGauges for the reporting side of things.
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Last Edit: Mar 11, 2014 10:16:12 GMT by VIP
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Mar 11, 2014 10:41:31 GMT
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1) top quality engine oil (castrol) 2) fresh gearbox oil (castrol syntrans) 3) air filter 4) tyres up to 40psi 5) lowered suspension 6) limit the movement of the accelerator pedal so you only get 3/4 (no what) 7) lighter wheels and taller skinny tyres 8) passenger wing mirror delete 9) renew engine sensors if you are serious then get a "mpguino" kit too Actually, if you are adopting 'pulse and glide' techniques, the most efficient throttle position is WO T. I don't think the SDI has any engine sensors, its a very simple agricultural lump. I've got an eye on a couple of s/h ScanGauges for the reporting side of things. it does depend on the engine. i do a lot of pulse and glide and its often from 1/4 to 1/2 throttle. i very rarely see W.O.T even on the motorway at 70. car is an 09 mondeo with the old 1.8 lynx diesel but with the 6speed box which is ideal for gliding in 6th...and its a diesel so lots torque lower down the curve. the mpg guage reportds back about 43mpg but brim to brim is about 45.
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VIP
South East
Posts: 8,293
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Mar 11, 2014 11:58:35 GMT
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Actually, if you are adopting 'pulse and glide' techniques, the most efficient throttle position is WO T. I don't think the SDI has any engine sensors, its a very simple agricultural lump. I've got an eye on a couple of s/h ScanGauges for the reporting side of things. it does depend on the engine. i do a lot of pulse and glide and its often from 1/4 to 1/2 throttle. i very rarely see W.O.T even on the motorway at 70. car is an 09 mondeo with the old 1.8 lynx diesel but with the 6speed box which is ideal for gliding in 6th...and its a diesel so lots torque lower down the curve. the mpg guage reportds back about 43mpg but brim to brim is about 45. Generally, the MPG vs time accelerating to achieve required speed means WO T is the most efficient. Gearing is redundant when gliding anyway.
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Last Edit: Mar 11, 2014 11:59:14 GMT by VIP
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Mar 11, 2014 12:21:46 GMT
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i'm sure what is the most efficient...i'm not disagreeing with you....but what is rarely achieved in day to day driving. and glidig is 6th is much better than gliding in 5th so gearing does come into it.
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Mar 11, 2014 12:25:02 GMT
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Have you tried making sure your lights are off and folding down the back seats? I hear those two things combined will get you at least another 10mpg, or 10bhp depending on your aim. Really enjoy the ecomodder stuff, will be interesting to see how your project does
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Mar 11, 2014 12:27:10 GMT
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Its 75 miles total, almost entirely motorway, and yes, I do want to keep it as 'complete' as possible. That's nothing then! I do 100km per day with traffic. My normal economy is 4.5 to 5 litres/100km on the bike and 10 l/100km in my cars.
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village
Part of things
Always carries a toolbox. Because Volkswagen.......
Posts: 567
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Mar 11, 2014 13:13:16 GMT
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100km = 62 miles.......
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"The White Van is strong with this one...."
Chris "Chesney" Allen 1976-2005 RIP
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Mar 11, 2014 13:30:02 GMT
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A Seat Arosa really isn't my idea of a cool car, but your goal makes it very interesting, and even the current mpg makes me look twice at them now. You know the best form of lowering for aero will be some rake. Not something you tend to see on a VAG modded car....
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Mar 11, 2014 15:03:19 GMT
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Very interesting project, I'd start by removing the back seats and front passenger seat... and a pair of earplugs won't cost much if it turns out to be too noisy...
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Mar 11, 2014 15:38:38 GMT
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Last Edit: Mar 11, 2014 15:42:37 GMT by joem83
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VIP
South East
Posts: 8,293
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Mar 11, 2014 16:12:47 GMT
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i'm sure what is the most efficient...i'm not disagreeing with you....but what is rarely achieved in day to day driving. and glidig is 6th is much better than gliding in 5th so gearing does come into it. When gliding, you're out of gear, so I can't see how gearing comes into it.
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VIP
South East
Posts: 8,293
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Mar 11, 2014 16:15:10 GMT
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A Seat Arosa really isn't my idea of a cool car, but your goal makes it very interesting, and even the current mpg makes me look twice at them now. You know the best form of lowering for aero will be some rake. Not something you tend to see on a VAG modded car.... Interesting, its not something I've seen on other ecomodded cars, since giving the car rake presents a higher angle to the windscreen. I'll have to do more research in that area.
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VIP
South East
Posts: 8,293
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Mar 11, 2014 16:18:04 GMT
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As stated before, I want the car to remain as complete and comfortable as possible, so fitting an uncomfortable bucket and ripping out all of the carpets are not high on my list. As for mirrors, there will be none externally. The rear view will be converted to a convvex wide angle version, and smaller 'blind spot' mirrors will be mounted on the inside of the doors to offer some assistance when changing lanes etc. The all round visibility is pretty good in the car, so looking over my shoulder will take care of most manoeuvres .
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Mar 11, 2014 16:21:37 GMT
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It'll be interesting to see what gains are available whilst keeping the car usable and 'real-world'.
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Last Edit: Mar 11, 2014 16:23:20 GMT by Deleted
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Mar 11, 2014 16:30:35 GMT
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I think you have to keep the driver side mirror at least for the MOT and police. Correct me if I'm wrong
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VIP
South East
Posts: 8,293
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Mar 11, 2014 16:35:30 GMT
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I think you have to keep the driver side mirror at least for the MOT and police. Correct me if I'm wrong That's certainly true for the MOT, but seeing as the car isn't subject to an MOT test every day, I'll just have a peep mirror that attaches to the door frame for the annual test. The internal mirrors would satisfy all but the most bolshy policeman, in the remote chance they even noticed, and even then they'd only give me a 'fix-it' ticket, which again can be remedied by the peep mirror.
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Mar 11, 2014 16:49:58 GMT
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As stated before, I want the car to remain as complete and comfortable as possible, so fitting an uncomfortable bucket and ripping out all of the carpets are not high on my list. Fair enough, I always found buckets to be very comfy on long trips though. Didnt think about running no mirrors tbh.
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Mar 11, 2014 17:27:05 GMT
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i'm sure what is the most efficient...i'm not disagreeing with you....but what is rarely achieved in day to day driving. and glidig is 6th is much better than gliding in 5th so gearing does come into it. When gliding, you're out of gear, so I can't see how gearing comes into it. I was under the impression that keeping the car in gear and coasting with your foot off the Gas uses less fuel than taking the car out of gear and free wheeling?
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