Impellor Member 835 Member For: 14y 7m 7d Gender: Not Telling Posted 16/01/12 12:25 AM Share Posted 16/01/12 12:25 AM (edited) At 110 kph my ba xr6 turbo is sitting on 2800rmp, 5 gear on cruise control, This is to high isnt it? Just as a matter of interest what is your instant fuel consumption reading at 110kph, I'm thinking that it would be horrendous, Cheers Edited 16/01/12 12:26 AM by Impellor Link to comment Share on other sites More sharing options...
Paulie2256 Donating Members 7,441 Member For: 16y 3m 6d Gender: Male Location: SE Melbourne Posted 16/01/12 12:27 AM Share Posted 16/01/12 12:27 AM Dillz it would be off boost as boost is generated by engine load not rpm. Brian, what about TR6060? Link to comment Share on other sites More sharing options...
Dillz Three pedals are better then two.. Donating Members 15,637 Member For: 17y 9m 2d Gender: Male Location: Melbourne Posted 16/01/12 01:02 AM Share Posted 16/01/12 01:02 AM Thought it was rpm, more revs more gas. Either way you can here/feel it. Link to comment Share on other sites More sharing options...
MiKa Donating Members 4,243 Member For: 18y 6m 7d Gender: Male Location: Melbourne, VIC Posted 16/01/12 01:20 AM Share Posted 16/01/12 01:20 AM My boost guage needle is in vacuum when cruising over 2000 rpm.. but when I put the foot down/load it swings into action.. Link to comment Share on other sites More sharing options...
Paulie2256 Donating Members 7,441 Member For: 16y 3m 6d Gender: Male Location: SE Melbourne Posted 16/01/12 01:52 AM Share Posted 16/01/12 01:52 AM (edited) Thought it was rpm, more revs more gas. Either way you can here/feel it.This is sort of true. Increasing revs are (kind of) a by product of combustion energy. The energy generated makes the engine spin faster because it has nothing else to do.The friction between the tyres and the ground is the "load". The more friction there is the more fuel and air is dumped and more exhaust is generated creating more boost (this is why we have a wastegate). Does not necessarily mean revs will increase.But not sure if this is the right thread to be getting into detail. I'm just nit picking. Edited 16/01/12 01:53 AM by Paulie2256 Link to comment Share on other sites More sharing options...
bcl Toughest BA Turbo Lifetime Members 3,408 Member For: 22y 2m 3d Gender: Male Location: Sydney Posted 16/01/12 02:41 AM Share Posted 16/01/12 02:41 AM In a 4 litre turbo you'd have a major problem if you were using boost on cruise at 110kph.On a 1.3 litre OK, but not a big torquey motor like the Ford has.Higher revs will use more fuel at a given speed than lower revs, dependent on load.e.g if you were revving at 2500rpm under minimal load, at a given speed, then changed to a different diff, and had 2800rpm, again under minimal load, I'd expect to use more fuel at 2800.Since the BA the overall drive ratio in tallest gear has got progressively lower (taller).Not sure about FG manual ratios; I think the 6th gear has a very tall 0.55, but not sure about the diff ratio. I've had the T5 & 3 different T56 boxes with 3 different ratio diffs. The taller overall drive ratios make a huge difference to cruise fuel economy.Brian Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 4m 1d Gender: Male Location: Perth Posted 16/01/12 02:50 AM Share Posted 16/01/12 02:50 AM Unfortunately the trade off for better acceleration is higher cruising RPM and higher fuel consumption. I bet with those diff gears it accelerates hard. It could be worse, in the old days we had 4 speed with 1 to 1 so at 110 with 4.11 the car was revving its head off. Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 9m Gender: Male Location: @ my laptop Posted 16/01/12 03:03 AM Share Posted 16/01/12 03:03 AM has tyre height been changed? Link to comment Share on other sites More sharing options...
freeze_dk I am dissatisfied with my current employment situation Donating Members 8,610 Member For: 18y 4m 30d Gender: Male Posted 16/01/12 04:58 AM Share Posted 16/01/12 04:58 AM My 5sp was just over 2000 @ 100kph so close to 2500 would be right.. This is with 19" if that makes a difference Link to comment Share on other sites More sharing options...
riptide Member 733 Member For: 14y 1m 10d Gender: Male Location: Auckland, New Zealand Posted 16/01/12 05:24 AM Share Posted 16/01/12 05:24 AM Must be fairly hard on the fuel consumption. At 110 I'm doing ~1700rpm with my ZF. It still pulls fine. Link to comment Share on other sites More sharing options...
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