Jamesy Posted March 20, 2010 Share Posted March 20, 2010 Hi guys I am picking up my Boostlogic autobox in the next week or so. Its coming with a 3800 Hi Stall which is probably a bit high for my turbo (GT35R). ..... so i just wondered if anyone has a smaller Hi Stall (what is the lowest available? ) that they might want to swap for mine if they are running a big turbo? If not, no worries.... Muchos! Link to comment Share on other sites More sharing options...
mark newman Posted March 20, 2010 Share Posted March 20, 2010 Im after one of these (3800 Hi Stall) If you choose to sell it instead give me a price Link to comment Share on other sites More sharing options...
Jamesy Posted March 20, 2010 Author Share Posted March 20, 2010 thanx will, but i only really want to swap if someone has a smaller stall as i think it'd be nice to have one with the box. sorry EDIT: one here mate 3400 hi stall for sale - http://www.mkivsupra.net/vbb/showthread.php?t=212511 Link to comment Share on other sites More sharing options...
mark newman Posted March 20, 2010 Share Posted March 20, 2010 http://www.mkivsupra.net/vbb/showthread.php?t=212511 you buy this, i buy yours Link to comment Share on other sites More sharing options...
Jamesy Posted March 20, 2010 Author Share Posted March 20, 2010 http://www.mkivsupra.net/vbb/showthread.php?t=212511 you buy this, i buy yours wanted lower than 3400 dude, sorry Link to comment Share on other sites More sharing options...
mark newman Posted March 20, 2010 Share Posted March 20, 2010 no way Link to comment Share on other sites More sharing options...
Jamesy Posted March 20, 2010 Author Share Posted March 20, 2010 ideally. are there like 2400 and 2800 stalls?? Link to comment Share on other sites More sharing options...
Scott Posted March 20, 2010 Share Posted March 20, 2010 Is stock not around that? Link to comment Share on other sites More sharing options...
Jamesy Posted March 20, 2010 Author Share Posted March 20, 2010 Is stock not around that? I thought i read stock was 1800 but you know me mate ... NO idea lol. does anyone know what the lowest hi stall converter available is? With a GT35R coming on boost so early i was told i need to go for a low Hi Stall Link to comment Share on other sites More sharing options...
Scott Posted March 20, 2010 Share Posted March 20, 2010 I don't understand what you are looking for though bud. The reason for the 3800 stalls is so that you are at max boost when the car takes off. Any lower and it won't shoot the same. If you take it down past 3k you aren't going to get much of a launch benefit and you would be as well with stock Link to comment Share on other sites More sharing options...
Jamesy Posted March 20, 2010 Author Share Posted March 20, 2010 I don't understand what you are looking for though bud. The reason for the 3800 stalls is so that you are at max boost when the car takes off. Any lower and it won't shoot the same. If you take it down past 3k you aren't going to get much of a launch benefit and you would be as well with stock Just from what i'd heard if the turbo comes on at 2000 rpm, would i really want a hi stall keeping the revs at 3800 after every gear change on WOT? granted on launch then yes ideal, but not after every gear change therefore not gaining the benefit of the early spool. i thought the 3800 hi stall were better suited to bigger turbos which kick in around 3500-4000 rpm i hope i understand the function of this properly lol Link to comment Share on other sites More sharing options...
Scott Posted March 20, 2010 Share Posted March 20, 2010 Think you need to do some reading bud. I'm not claiming to know anything about them but my understanding of it all is as follows... The stall size determins the the amount of revs that can be applied while braking, this spools the turbo ready for launch. This means that you can push the accelerator to 3.8krpm for a perfect launch. The lower you go the more off boost you are for launching (depending on turbo size). With the 35 I would guess 3krpm-ish would be good for a launch. Any less and the turbo will most likely stall. I think the 35 is hitting max boost by around 3.5k so that would work out perfect as a compromise. I don't think the converter will make any difference to WOT gear changes as you will be well past the 3.8k mark (upwards of 7 depending on the ECU map). IMO I think you should try it without the aftermarket converter to see what you think. After that you can do the old swaperoo if you wish. Link to comment Share on other sites More sharing options...
Jamesy Posted March 20, 2010 Author Share Posted March 20, 2010 Thanx scott. That was my understanding of it too about how hi u can lanuch it. It was just from talking with l33 he mentioned about the way it changes the gears on wot. Link to comment Share on other sites More sharing options...
Scott Posted March 21, 2010 Share Posted March 21, 2010 I don't think the way it changes gears on WOT is affected. The main thing that people tend not to like is the way it drives when pottering around. Due to the torque converter being a higher stall it takes more revs for it to bite (as i understand it). This means that your engine is revving up to 2k before going anywhere and when it bites I'm guessing it will bite with authority. The higher stall you go, the higher you can rev with your foot on the brake. The obvious downfall is described above as the biting point will also increase, causing notchy, jerky gear changes. Link to comment Share on other sites More sharing options...
Jamesy Posted March 21, 2010 Author Share Posted March 21, 2010 But if your not 'power braking' and driving normally would it still need all those beans to grt it moving? Will need to do some proper research on this!!! Link to comment Share on other sites More sharing options...
Scott Posted March 21, 2010 Share Posted March 21, 2010 Yes because the torque converter changes where the bite is in order to raise the power brake limit. Think of the area between the bite and the brake limit as a band. The higher one goes, the higher the other goes. Link to comment Share on other sites More sharing options...
dude Posted March 21, 2010 Share Posted March 21, 2010 wanted lower than 3400 dude, sorry I think you will find a stock one is around 2900 dude, if you go lower than a 3400 dont bother. Link to comment Share on other sites More sharing options...
dude Posted March 21, 2010 Share Posted March 21, 2010 But if your not 'power braking' and driving normally would it still need all those beans to grt it moving? Will need to do some proper research on this!!! You have 2 diff stalls dude, flash stall ie driving along on tickover and flooring it, this will be the highest and brake stalling ie power braking off the line and building rpm/boost, this will be lower than the other, the gentler you are with the throttle the less it will stall, for the umpteenth time you need a 3400 min stall converter. Link to comment Share on other sites More sharing options...
Jamesy Posted March 22, 2010 Author Share Posted March 22, 2010 Cheers mate. Think the best bet is for me to find someone running a BL box with hi stall and see how it drives Link to comment Share on other sites More sharing options...
mrgee2jz Posted March 23, 2010 Share Posted March 23, 2010 Just from what i'd heard if the turbo comes on at 2000 rpm, would i really want a hi stall keeping the revs at 3800 after every gear change on WOT? granted on launch then yes ideal, but not after every gear change therefore not gaining the benefit of the early spool. i thought the 3800 hi stall were better suited to bigger turbos which kick in around 3500-4000 rpm i hope i understand the function of this properly lol Sorry to dissapoint but gt35r's come on at around 3K unless your using an ultra small exhaust housing and if you are, your then strangling the engine, i have run over 5 supra's with GT35r's and they are generally on full boost by 3500 to 4k and start boosting around 2600-3000rpm depending on housings, on a 2JZ you want the a/r .82 if you want less power or the 1.03 (more power) i think it is, (what i use) Link to comment Share on other sites More sharing options...
matt k Posted March 24, 2010 Share Posted March 24, 2010 The Stock t/c suits a 35r well, however a 3800 will out launch a stock one on any turbo no matter how small the turbo is, don't forget you can feather the throttle to drive in a more refined matter, you can get the stock t/c to drive at around 1k with a light touch. Link to comment Share on other sites More sharing options...
Jamesy Posted March 24, 2010 Author Share Posted March 24, 2010 Sorry to dissapoint but gt35r's come on at around 3K unless your using an ultra small exhaust housing and if you are, your then strangling the engine, i have run over 5 supra's with GT35r's and they are generally on full boost by 3500 to 4k and start boosting around 2600-3000rpm depending on housings, on a 2JZ you want the a/r .82 if you want less power or the 1.03 (more power) i think it is, (what i use) Mines a .68 dude, cheers Link to comment Share on other sites More sharing options...
Jamesy Posted March 29, 2010 Author Share Posted March 29, 2010 unless a 3200 comes up in the next week or so (Matt ) i will just install the BL box with this 3800 fitted. Link to comment Share on other sites More sharing options...
supra matt Posted March 29, 2010 Share Posted March 29, 2010 sorry mate wont be off till end of may . if your worried leave the stock one in for now as you dont sound like you will drive it that hard . Link to comment Share on other sites More sharing options...
Jamesy Posted March 29, 2010 Author Share Posted March 29, 2010 Cheers matt. Gonna pop down for a 'hi stall lesson' from dude this week Link to comment Share on other sites More sharing options...
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