| Author |
Message |
Mike Bradberry
TryHard
Queensland
V8 Limited
Posts: 150
Reg: 07-2005
|
I always have my Limited in 'power' mode, but have tried the other switchable position and I'm damned if I can feel any difference. Am I expecting too much or maybe the switch isn't working. Any thoughts? |
Jan Christiansson
TryHard
NSW
Soarer V8
Posts: 130
Reg: 07-2005
|
You don't get more power out to have the switch on, it just holding the gear for longer time when you floor it. |
Mike Bradberry
TryHard
Queensland
V8 Limited
Posts: 151
Reg: 07-2005
|
Thanks Jan, I didn't make myself clear. What I wanted to know was the difference in the change points. |
Dan McColl
DieHard
Victoria
UZZ-32 V8 Soarer #138
Posts: 932
Reg: 07-2005
|
Do a search, It is on here somewhere. |
Peter Nitschke
Junk Filterer
South Australia
GT4.0 V8
Posts: 3801
Reg: 11-2004
|
Vewwy widdle.
Said the rabbit. |
Benjamin Burgess
TryHard
NSW
Toyota Soarer GT-TL
Posts: 354
Reg: 07-2005
|
I'm pretty certain power mode keeps the torque convertor mechanically unlocked for much longer as well. Makes your fuel economy go to s***. |
David Vaughan
Goo Roo
ACT
Soarer UZZ31 V8 manual. Lexus IS300
Posts: 1682
Reg: 07-2005
|
In my experience, if you floor it then the two modes will behave exactly the same. The Power switch makes a difference to partial throttle gear changes, holding longer or changing down earlier. I have found very little difference in fuel economy in normal driving. |
Sam Schreck
DieHard
ACT
vvt-i JZZ31
Posts: 653
Reg: 07-2005
|
Mine makes a huge difference. In power mode it'll easily rev to redline very quickly and hold there for a little bit, and loves it. In normal mode flooring it it'll usually rev till around 5 - 51/2 and shift up a gear very quickly. Power mode scares me. I tend to cringe a bit when I hear the engine working that hard even though it probably loves it. And yes, the fuel gets gulped big time. |
David Vaughan
Goo Roo
ACT
Soarer UZZ31 V8 manual. Lexus IS300
Posts: 1684
Reg: 07-2005
|
quote:And yes, the fuel gets gulped big time
Probably something to do with 5500 RPM  |
Sam Schreck
DieHard
ACT
vvt-i JZZ31
Posts: 654
Reg: 07-2005
|
More likely 6200 RPM POWER MODE!!! |
Morgan Cross
Goo Roo
Melbourne
Soarer TT
Posts: 1288
Reg: 07-2005
|
Or 7200rpm's in a TT! |
Avin Luther
DieHard
vic
Soarer uzz31 Limited
Posts: 903
Reg: 07-2005
|
or 9000 in an S2000 |
Dan McColl
DieHard
Victoria
UZZ-32 V8 Soarer #138
Posts: 942
Reg: 07-2005
|
Or 19 000 in a F1 |
Dan McColl
DieHard
Victoria
UZZ-32 V8 Soarer #138
Posts: 943
Reg: 07-2005
|
Or 47 000 in a jet turbine engine. |
Callum Finch
DieHard
WA
Soarer TT
Posts: 819
Reg: 09-2005
|
Or 100,000,000 in a bunny rabbit's bed.
;) |
Matthew Sharpe
DieHard
North Island
3.0 GT
Posts: 577
Reg: 10-2005
|
Morgan Cross wrote on Thursday, March 23, 2006 - 08:56 pm:Or 7200rpm's in a TT!
Hmm, how fast do you recon your turbo turbine would be spinning at that many RPM? |
Emanuel Spinola
Moderator
NSW
JZZ30, UZZ32
Posts: 727
Reg: 07-2005
|
Matthew Sharpe wrote on Friday, March 24, 2006 - 07:29 am:Hmm, how fast do you recon your turbo turbine would be spinning at that many RPM?
The same speed as if the engine was doing 3000rpm - the wastegate(s) bleed(s) excess boost from low in the rpm range. Turbine shaft and crankshaft rpms are not directly proportional.
My 1JZ-GTE would rev happily/regularly to it's 8500rpm hard redline - you get that with the 1JZ-GTE's ideal bore/stroke ratio. |
Dan McColl
DieHard
Victoria
UZZ-32 V8 Soarer #138
Posts: 954
Reg: 07-2005
|
I think the turbo's normally spin around the 80-90 000 rpm mark. |
Morgan Cross
Goo Roo
Melbourne
Soarer TT
Posts: 1297
Reg: 07-2005
|
Avin Luther wrote on Thursday, March 23, 2006 - 09:47 pm:or 9000 in an S2000
Haha, beaten by a 4 banger... :P |
Matthew Sharpe
DieHard
North Island
3.0 GT
Posts: 578
Reg: 10-2005
|
I thought the wastegate was placed after the turbine? So the exhaust gasses pass through the impeller at a rate dependent on engine RPM's, driving the turbine to produce the boost, which is then bled off by the wategate if the boost is too great (thus the impeller and turbine speed would be releated to engine revs/amount of exhaust gass released) - not that I claim to know anything about turbo's as I've never owned or worked on a turboed car...  |
Luke Middleton
Tinkerer
NSW
V8 Limited
Posts: 75
Reg: 07-2005
|
The wastegate is used to bypass exhaust gas from going through the turbine thus controlling the turbine speed.That's the way I understand it anyway. |
Matthew Sharpe
DieHard
North Island
3.0 GT
Posts: 579
Reg: 10-2005
|
I guess that would help keep friction temperature and wear down, so it does make sense. |
Mark Paddick
Goo Roo
ACT
V8 Soarer UZZ31, JZZ30 TT Soarer I'm catching up!
Posts: 2149
Reg: 07-2005
|
Morgan Cross wrote on Thursday, March 23, 2006 - 08:56 pm:Or 7200rpm's in a TT!
MiNe(s) is 8500rpm  Misses real bad up there though...new plugs required. At least there's only 6. |
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