| Author |
Message |
Dennis Weglehner
Tinkerer
QLD
R31 Skyline with 2JZGTE and A340E
Posts: 95
Reg: 08-2006
|
How are people getting good stall speeds off the line without lighting the wheels up or pushing the front when getting on the converter? Is anyone upgrading the rear brakes and handbrake etc? Will stalling in second gear do damage to the trans?
With the handbrake and brakes hard on I can only get 2500rpm in first with like 2 psi, and with the handbrake and brakes on in second I can get 3300rpm with about 8 psi. |
Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder
Posts: 1677
Reg: 03-2006
|
Gearbox will go BOOM with the 2nd ghear stall trick.. Ask alot of XR6 Turbo guys!!!
Decent tyres help me! Brake and Handbrake i can see 3000rpm every time no problems. This has netted me low 1.7 60 footers so far. WIth a little more track time, im hoping to get into the 1.6 mark!
My rear brakes need machining and new pads. But if 3000rpm is working for me, i dont wanna over stall it and balloon the convertor too much and damage it! |
Dennis Weglehner
Tinkerer
QLD
R31 Skyline with 2JZGTE and A340E
Posts: 96
Reg: 08-2006
|
How does the second gear trick blow the trans? Is it the change into first that blows it or the load while it is in second? Maybe its OK with a A340?
I will be running MT DR's, which will stop the spin at the track, but from previous experience this just means that my front tire will skid forward. I have crap rear brakes.
Does a soarer have a good hand brake setup? Is it an internal drum or does it act on the callipers? Will pulling the handbrake at speed rip a skid? My R31 won't even skid when I do this. |
Mustafa Akgul
Goo Roo
NSW
JZZ30-GTTL
Posts: 1045
Reg: 07-2005
|
Dennis next time dont stall it so much maybe 1500 revs max then floor it when tree goes green.trust me i have done it resulting in high 12`s. |
Dennis Weglehner
Tinkerer
QLD
R31 Skyline with 2JZGTE and A340E
Posts: 97
Reg: 08-2006
|
That won't work with my car mate. I will need some good stall speed to make boost and will be running drag radials. It has the power and trap speeds to run 10's if I can get a 1.7 60 foot. |
Aaron Mead
Goo Roo
NT
TT
Posts: 1471
Reg: 03-2006
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Then get a bloody converter if it can run 10's. |
Dennis Weglehner
Tinkerer
QLD
R31 Skyline with 2JZGTE and A340E
Posts: 98
Reg: 08-2006
|
I have a MV 2800-3000 converter. |
Benjamin Burgess
Goo Roo
NSW
Toyota Soarer GT-TL, Toyota Corolla Conquest
Posts: 1248
Reg: 07-2005
|
Dennis you already know how much I'm getting on the stall converter. I do have good front brakes ie supra 4 pot brakes 235 wide tyres and I have to use the handbrake and the footbrake (standard jzz30 rear brakes) to hold it on the line. The highest I've ever seen on the stall was 4400rpm and 23psi of boost and that was so much torque it slipped over the beams. Note that the oil pressure in the box is so high that I get a small amount of oil leakage from one of the transmission cooler fittings. I may need to upgrade to speedflow fittings. |
Dennis Weglehner
Tinkerer
QLD
R31 Skyline with 2JZGTE and A340E
Posts: 99
Reg: 08-2006
|
Seems you guys don't even need to upgrade the converters. The stock 2JZ one doesn't go above 2000. 4400rpm is nuts!
My front brakes and rear tires aren't a limiting factor as the rear tires grip and skid the front tires along. I think its my weak handbrake. What type of handbrake does a soarer use? Is it drum in disc, or piston actuated? |
Cihan Aday
Goo Roo
USDM 2J camshafts installed!
JZZ30
Posts: 1895
Reg: 07-2005
|
Bens running an MV stally also Dennis. |
Chris Davey
Goo Roo
QLD
Corona
Posts: 1310
Reg: 07-2005
|
Good thread. As some of you know I have a "4000rpm" converter which was made for my old turbo setup. I got to 2500rpm and then it started to spin the wheels a bit. Only foot brake was used. Normal street tyres at 25psi.
I didn't really think too much about the handbrake or tyres to be honest. I will get them sorted for next time also. It may turn out that it was my brakes or tyres that are holding me back and not so much the converter? |
Dennis Weglehner
Tinkerer
QLD
R31 Skyline with 2JZGTE and A340E
Posts: 100
Reg: 08-2006
|
Cihan, some guys are claiming over 3000 with the stockers aren't they? Seems a modded 2JZ one just equals a stock 1JZ one in terms of stall speed.
Chris, as I have shown, I could go from 2500 to 3300 by using second. This means the converter would go to 3300 in first if the brakes could hold it. So brakes and tires play a very important role. |
Chris Davey
Goo Roo
QLD
Corona
Posts: 1312
Reg: 07-2005
|
Aaah, I see. For reference sake, Mike at MV's told me ages ago not to take off in 2nd. I was going to do it as 1st was basically pointless with 4.6:1 gears anyway but he said it would kill it. He didn't go into detail why though. |
Benjamin Burgess
Goo Roo
NSW
Toyota Soarer GT-TL, Toyota Corolla Conquest
Posts: 1249
Reg: 07-2005
|
I regularly get to 4000rpm these days with my new setup. Unfortunately on friday I could only knock out a 1.76 60ft due to my new boost controller not configured correctly. I had the blitz set to auto mode and 24psi, but it seems that blitz makes the boost come on slowwwww using auto mode and that much boost. I have to use manual mode and use set and gain to get the correct boost and on quickly. The 1.76 60 ft was with about 12psi on the converter. I did a 1.69 60ft with 16psi on the converter, exact same launch rpm. I suspect with 23psi I'll be knocking on the door of a 1.60 60ft. |
Dennis Weglehner
TryHard
QLD
R31 Skyline with 2JZGTE and A340E
Posts: 101
Reg: 08-2006
|
Does it take long to get up there? What RPM does it go to when you first floor it? Takes a while for mine stall up to over 3000. |
Benjamin Burgess
Goo Roo
NSW
Toyota Soarer GT-TL, Toyota Corolla Conquest
Posts: 1250
Reg: 07-2005
|
2.5 to 3 seconds using part throttle. Takes twice as long if using full throttle. When I first put my foot down, it goes to 2800rpm and creeps up from there, till about 3400rpm, then it starts to rocket up again because of the engine torque. |
Dennis Weglehner
TryHard
QLD
R31 Skyline with 2JZGTE and A340E
Posts: 102
Reg: 08-2006
|
Does anyone have the specs for the soarer rear brakes? What type of handbrake is it? |
Peter Nitschke
JunkFilterer
South Australia
GT4.0 V8
Posts: 7504
Reg: 11-2004
|
Drum. Have a look at the rear rotors. |
Dennis Weglehner
TryHard
QLD
R31 Skyline with 2JZGTE and A340E
Posts: 103
Reg: 08-2006
|
Cheers, but I don't have a soarer remember  |
Dennis Weglehner
TryHard
QLD
R31 Skyline with 2JZGTE and A340E
Posts: 104
Reg: 08-2006
|
Any one got some specs like rotor diameter, number on pistons in the calipers, drum diameter for the rear brakes? |
Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder
Posts: 1685
Reg: 03-2006
|
I can get mine to 2500 STraight away then creep it up to 3000 inless than a second!
Next time i hit the track i will try and take note of the boost i get at the line. |
Blake Gloyn
Tinkerer
manawatu
soarer JZZ30 TT
Posts: 60
Reg: 02-2006
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if you have a soarer with ABS,you need to pull the ABS relays out,located under a small square cover near the passenger side strut tower. then hit the brakes, pull on the hand brake,and you gain about 300-400 revs more stall,and my times dropped from 2.1-2.2 sec to 1.92-1.95. the hand brake did nothing for me, until i pulled those relays. also,pulling those relays did nothing for me, until i pulled on the hand brake! wierd. I have a convertor that was supposed to be 3500 from MVs, but it only increased to 2800rpm,from a stock 2200-2400rpm.(until i did the relay pulling,which gets me 3000-3100rpm) Note, Daniel gets same stall as me, even though his is stock convertor, and pulls 1.7-1.8 60 footers,compared to my 1.9s. GO FIGURE. |
Dennis Weglehner
TryHard
QLD
R31 Skyline with 2JZGTE and A340E
Posts: 105
Reg: 08-2006
|
Shows that good braking force is a must when getting a good launch.
The stock 1J converter stalls easier than a MV 2800-3000 for the 2J. |
Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder
Posts: 1688
Reg: 03-2006
|
Its all in the Tyres Blake! Seriously, get yourself some Decent Street Strip rubber!
Best mod i have done for times! |
Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder
Posts: 1689
Reg: 03-2006
|
I dont understand why people spend 10+ Thousand $$$ In momds then wqhinge their car only runs High 12's low 13's when it "shoudl" be doing flat 12's or 11's...
Then all the excuses come out about, My car "SHould" this and that.....
Spend $600 on some GOOD rubber for the TRack if you want to run some decent times!
Trust me! My car in theory should only run high 12's, but ive provent hat out the window |
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