Peter_M Member 31 Member For: 13y 6m 12d Posted 20/08/13 09:14 AM Share Posted 20/08/13 09:14 AM Hello All,Just wondering what is the max 'safest' rwkw a 4 spd auto in an ba xr6t can handle? is 260rwkw too much for a ba xr6t?All replies appreciated. Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 5m 30d Gender: Male Location: @ my laptop Posted 20/08/13 09:19 AM Share Posted 20/08/13 09:19 AM many have failed with stock power and some have gone mid 300's, driving style, tyres used and how power is delivered can have an impact on how it will last but can be luck of the draw Link to comment Share on other sites More sharing options...
Bonjaz Donating Members 1,841 Member For: 15y 11m 19d Gender: Male Location: CQ Posted 20/08/13 09:20 AM Share Posted 20/08/13 09:20 AM Just on the street or drags? Tranny cooler already? Do you drive it hard all day everyday without warming it up? Do you shift down manually or let it kick down? Do you do many 3rd and 4th gear WOT's too 200+km/h. Drive and treat it right no reason high 200s or low 300rwkw won't last a while but it will eventually die. Your 260rwkw is probably about right. Link to comment Share on other sites More sharing options...
Peter_M Member 31 Member For: 13y 6m 12d Posted 20/08/13 09:25 AM Author Share Posted 20/08/13 09:25 AM I'll be driving it as a daily, I will push it here and there, but nothing over the top, the car im looking at has roughly 250rwkw and has a rebuilt 4 speed... I made a big mistake with buying a 5spd manual last time, so just trying to get abit of info before I go out and spend some dollars.. as I said its a xr6t with 250rwkw so I will punch it abit, but 65% will be driving quite normally, especially considering petrol prices these days... Link to comment Share on other sites More sharing options...
Bonjaz Donating Members 1,841 Member For: 15y 11m 19d Gender: Male Location: CQ Posted 20/08/13 09:28 AM Share Posted 20/08/13 09:28 AM You made the mistake once, stretch your budget and go a 6sp Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 5m 27d Gender: Male Location: Adelaide Posted 20/08/13 09:48 AM Share Posted 20/08/13 09:48 AM A "built" BTR can "usually" take low 300's for quite some time but again driving style has alot to do with it Some stock BTR's can hang on to modified power The mid range torque of the turbo 4.0 just kills the BTR but again if u look after it and get it serviced often and a big transcooler on board u should get many trouble free kms with ~260rwkw Link to comment Share on other sites More sharing options...
spinr33 Donating Members 964 Member For: 13y 3m 10d Posted 20/08/13 11:19 AM Share Posted 20/08/13 11:19 AM I had a stock BTR handling 300kws for 20,000kms + till I sold it I think tune has a lot todo with it plus didn't do burnouts etc just normal driving and occasional power skid Link to comment Share on other sites More sharing options...
Skids4kids in the mid....not the bum like some Member 609 Member For: 11y 7m 3d Gender: Male Posted 20/08/13 11:48 AM Share Posted 20/08/13 11:48 AM Some can even rack up 80 passes,runs 10's and hit over 130mph with untouched internals...just as Ford made it:)Very under rated box on the strip behind a turbocharged engine when sorted....that tall first gear loads the turbo beautifully.Its never going to be as good as a ZF day to day though. Link to comment Share on other sites More sharing options...
Kosij Donating Members 2,045 Member For: 13y 3m 16d Gender: Male Posted 20/08/13 12:58 PM Share Posted 20/08/13 12:58 PM As said above. A good box IF built correctly and tuned correctly. I've driven the 6spd zf and to me the btr feels better/smarter. In saying this I would never go back to a 4spd but this is only because of the issues I have had with mine...... THAT'S WHAT HAPPENS WHEN THERE NOT BUILT CORRECTLY!! Link to comment Share on other sites More sharing options...
MercuryXr6Turbo Member 361 Member For: 16y 1m 28d Gender: Male Location: Perth, WA Posted 20/08/13 01:21 PM Share Posted 20/08/13 01:21 PM My first tune at about 105,000km's was 257rwkw and I was running a stock BTR. Had that power for about 20,000km's... BTR held up perfectly, the line pressures were increased and shifted firm with no 'flaring' on gear changes.At about 125,000klms I upped the power to 290rwkw of which was ok for about 10,000kms before the 2nd to 3rd shift started to 'flare'. Ran it with that box for another few thousand k's taking it easier on it until I got a 'build' BTR fitted at about 138,000kms. Currently car is on 177,000kms and (touch wood) the built BTR hasnt missed a beat. I dont thrash the car but drive it like it wants to be driven of which with the very firm shifts it likes to accelerate harder. The built BTR I have performs really well at my power level and I think it would handle a fair bit more.When test driving the car, open it up a bit through the gears noting the shift 2nd to 3rd for any flaring (slipping).Hope this helps. Link to comment Share on other sites More sharing options...
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