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The mkiv Supra Owners Club

Slow 1/4 starts ?


Steve W

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Is it just me (but, I'm sure I saw a chat about it on here ages ago?)...

 

Is it right the Supra has an 'inbuilt' gentleness when pulling away

from a standing start ?

 

ie. at Pod' EVERYTHING beats it off the line.... then KAPOWEE...

it flys past everything !

 

I know mine's auto... I know it's a turbo... I know I can improve it

with Power-Braking...

 

but, it's almost like it WON'T rev up instantly (it's not a 'spool-up'

thing, it's a 'slow-rev-up' thing)

 

Is it mostly 'cos it's a SIX and sixes inherently are a tad' more

reluctant to 'rev' than 4's ? (but doesn't seem to be the case with

EIGHTs !)

 

The thing is, mine gets a VERY consistent 14.1 1/4.... and if the

start is being 'restrained' then it's REALLY shifting over the last

9/10ths...

 

The only PLUS point is, it COMPLETELY controls the wheelspin

off the line;)

 

[ Not really moaning, I can always concentrate on the 9/10ths:p

just interested :upside: ]

 

FatS.

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think you would do a lot better with an uprated torque convertor. its supposed to be good for up to 1 second off your times. it comes into its own off the line. supposed to let you get off the line at higher revs. can be a bit bad when you know car has the power but is crap off line.

 

try power braking its good. beat a few scoobys off the line and makes you feel good beating a 4wd.

 

last elvington i beat a audi rs4 in wet and another audi rs4 beat me.

 

sounds like you got the bug :)

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Guest Terry S

I doubt you' knock a full second off your times but you would love a 3.2k high stall. Make sure you get a "lock up" one though.

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Guest Martin F
Originally posted by Terry S

I doubt you' knock a full second off your times but you would love a 3.2k high stall. Make sure you get a "lock up" one though.

 

Who are you ? Do we know you ? Have you paid your membership fee ?

 

 

:p :baa: :p :baa: :p

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its what i have read. says thats with drag radials and applying full power braking.

was thinking more of 3600 as 4000 might be too much for stock twins.

 

got an email off a torque convertor place where they upgrade your stock convertor for $395

 

email below

 

 

Yes, we do torque converters for many import applications. We just finished building a torque converter for a twin turbo 300ZX that is running in the 10's. As well as many turbo Supra's that are also in the 10's. Many of these cars have been featured in TURBO Magazine. The most recognizes is probably Vinnie Tens 8 second Supra.

 

We offer two torque converters for this application. The first is our PTC - TO44SS. This torque converter is the perfect mix of performance and streetability and is recommended for a street/strip application. The stall speed on this torque converter is approx. 300-800 above stock. Our price on this torque converter is $395.00 +shipping. The reason we recommend this piece is because of it's good drivability, and durability.

 

We do these on an exchange basis. The turnaround time for this torque converter is usually 1-2 days.

 

In performance applications we also recommend a cooler due to the fact that performance torque converters tend to create more heat. We carry a full line of coolers. Please feel free to call or e-mail me if you have any further questions. We have these things in stock and are prepared to ship on your advise. Once again thanks

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Alright, Convertors and Drag Radials later :sly:

 

Being I've NEVER Power Braked in ANYTHING before......

 

"Left foot on brake...... Right foot throttle giving ~1,500 ? ?

 

as light 'greens' > >just 'off' the brake 'on' throttle ? ?"

 

BUT, only do this a 'second' before the OFF ? ?

(ie. once 'STAGED' just waiting for 'GREEN' ?)

 

(more/less than 1,500 ? is that enough to get things PRE-boosting ?)

 

[this is starting to sound VERY Nova/Scooby -ish ya know ! !]

 

** "the Flying FatS" **

:upside: :tongue: :looney:

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thought mine was slow off mark, seems to get 2000-2500 rpm before wheels start spinning on line.

 

press hard on foot brak build revs up just before tyres start spinning as soon as i see amber i launch as the time it takes to to react the lights will be green

 

practice

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You may have some 'teaching' to do when I stroll up your way

 

Markie-Boy ! !:innocent:

 

(BTW, Mark, what's been done on yours boosty-wise ?

your figures are a nice bit healthier than mine... I NEED a

13-something to ease the 'pain' !! :devil: )

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boost on strip was 1.2bar

 

cw decats

cams n gears

nur spec

fmic

 

times to me is crap, its a load better on road or better surface. just have to do what you can with grip off line, once its roling wheels dont seem to spin. cant have enough power :)

all good fun though.

fitted my chrome dials but did not make it any faster.

will try elvington in june or july

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MATT ! ! :lalala:

 

YOU'RE BACK ! ! !

 

***********************************

Yeah, brakes in, front AND back.

 

NUR on.

 

TRACTOR 285/40-17's on back (Khumo 712's).

***********************************

 

I DO floor it mate ! !:p

 

But, that's the best I can get (and me dad), admitedly(sp?)

last Saturday it was VERY hot (~27C at Pod) and so it probably

'actually' went better than it 'felt'(?) 'cos it was 14.1 BEST

before in the cold, now 14.1 in SCORCHIN' hot, so it's probably

REALLY better - if that makes sense ? ?:conf:

 

I mean, I felt tired in the heat, so I'm NOT gonna blame poor ol' Soopy

if he/she (?) felt a bit on the warm-side.

 

NO, I obviously need a 'bit' more boost = controller.

but, I need QUICKER off the line, and more boost isn't gonna

get THAT ! ? that's why I probably need to do silly Power Brakin':music:

 

I tried Switchin' the overdrive out 'cos I seem to remember

someone saying it would "shift" faster........ NAH ! !

 

I MAY try a touch of MANU but don't like the idea of ME

saying when it should change - plus, weren't enough runs IN

Pod' to try anything:mad:

THAT'S why I fancy ooop norff for some ALL DAY / LOADSA' RUNS

action.

 

I'd rather put in a 3-4hr drive and get PROPER strip usage than

SIT AROUND LIKE A LEMON at Pod' anymore:devil: :angry:

 

FatS.

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NO, I can honestly say I've NEVER toyed with an Artificial Pussy !:music:

 

AND, there's NOTHING wrong with a good Blow-Job.......

 

......................provided it ends with 'coming' first !:sly:

 

 

SO.... is THAT a veiled CHALLENGE then BIG-BOY ? ? :sly:

 

[ANYWAY, with no turbo-churners, you've got nuthin' to put a

silly "psshtekoof" Valve on ! !:p - NO, I'm NOT getting one ! !:mad: ]

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So come on guys, what is the best way to power break without fear of busting anything..............and is power breaking in a UK spec any different ie. revs wise?:flame Dev

Should wheels spin easy after how many revs? where is the break point for traction in the dry whilst doing this?:eek:

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Looks like Dom's getting aggressive ;) - Steve, that was an excellent reply. - We'll have to show him how inspiring a double blow-job can :D

I'd be up for a northern drag run too, although I think I might need a new clutch before I start really giving it some stick... I made it slip at full boost a couple of days ago just practicing the art of quick getaways :innocent:

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Originally posted by Scooter

Geezabloke, I THINK that you have less to worry about re breaking anything as i'm PRETTY sure that the UK's have an auto fluid cooler that the J-specs don't.

As for technique I can't help, never 'stripped' an auto....

 

jspecs do have tranny cooler (oil to water), uk's have an oil to air cooler as well, this doesnt do much whilst u r stood still. it needs moving air to work. powerbraking heats up the trans fluid at an incredible rate. the best way to avoid trans disaster is to reduce yr tranny fluid srvice times, and just dont burn the fluid in the first place. if i was doing lots of powerbraking id get a temp probe in the trans fluid so u can know whats going on. alot cheaper than a new transmission.

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suppose if the tranny breaks you could always get a shiny new SP400 tranny

 

suppose its best to do regular changes if you are racing a lot, and get 1 or maybe 2 tranny coolers and a temp gauge like eyefi said to be on safe side.

 

that bloke in america i wrote to about torque convertors does the auto coolers too. if you replacing torque convertor and fitting tranny coolers and fresh fluid should be smart.

 

 

ps by the way seen an evo 7 engine out of car today and it had a torque convertor on it, could not belive it at first thought it was a FTO engine. the evo 7 had trip tronic on it.

 

also got told that the american torque convertors are good.

us auto boys have to give the REAL men with TT6 drivers a run for there money :)

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