4 Speed Auto What Are They Good For Rwkws?

[GCTXR6]

gday I have just recently had the car tuned to 246rwkw and 560-530rwnm

the car has done 88000km and is faultless in operation

I removed the auto pan at work and replaced the filter no probs and no bits evident

then flushed the system with 10l of valvoline le95 oil also fitted a pwr trans cooler

what I need to know is this level of tune is this ok for the auto im not a complete burnout freak and I consider I am soft on the car

what are the experences have you guys had after a tune and

what kws were you running if any faults encounterd

im aware of the you play you play saying

[IEATV8S]

I had 244 RWKW for over 12 months with the same torque as you. I never had a problem the car now runs 284.7rwkw with 640Nm and still no problem.

[XRDOSE]

should be fine at them power levels

[MRDOSE]

if oneself wanted to go 300+kw would a new box be needed?

[Ninka]

  brandan said:

if oneself wanted to go 300+kw would a new box be needed?

I think it has been well documented that the 4 speed cannot be used for much over 290-300rwkw, at which point you are reaching the limit of the bands and clutches, even with a significantly modified box.

An effect of the modifications are that the trans need to shift hard, making your car quite jerky to drive, but soft shifts and high rwkw/torque do not mix.

The FPV ZF 6speed is the way to go if you need more than 300 rwkw and want an auto, but they are not easy to install in a BA as it was never configured for use in that model.

I have done the conversion in mine, and after going through all matter of power levels in the 4 speed trans, I haven't looked back since making the conversion.

[straughsberry]

Not necessarily. How long it lasts depends on 2 main things. The characteristics of the tune and how you drive it. A tune that makes heaps of torque down low will wear out the box quicker. Lots of dragging will also wear it out more quickly. Axle tramping all over the place will also wreck the box.

I've been running 315rwkw for about 6 weeks now without a cooler and I give it plenty. The box is holding up well with no signs of it dying yet. The previous tune made 234rwkw but had way more torque down low and made the box slip between 2500 and 3500rpm. It wouldn't have lasted too long like that. A tune that makes heaps of power down low will kill your box much quicker than a tune that is more linear in it's power delivery.

Edited 22/04/08 02:46 PM by straughsberry

[GCTXR6]

mine has been firmed up in the shifts when tuned

some good feed back cheers guys

[hanra]

Ive been advised to run Penrite ATF synthetic through mine. Its recommended for vehicles under high heat stress and heavy loads like towing. Just pumped 12L through it last Friday, along with a new filter.

[blueboost]

with the right presures these boxes can handle 330-340rwks at least,you could get a dud one , but on the hole set up right, they hold together, we have heaps running around with over 330rwks.

mine was pulling around 1300nm of torque, (hi stall) and has ran over 350 passes down the quarter,

and she is still sweet, the new owner drives it every day.(around 360rwks) when it pulled the ten.

you could abuse them, which would be heat related, and you mighthurt them then, like around a track, and a few laps, and the heat will kill it. but other then that I have found them to be very strong.

I do think that the presures cannot be made strong enough for much more then this,

but I would get run mine high,like I have maybe up to about 370rwks.

PS MOST HURT THEM BUY RUNNING THIS POWER INTO FOUTH, IT CANNOT HANDLE IT

but you can still do over 200 k's in third, and if you want to wind it out more, don't hold it flat in fouth.

there was not much known about the software in the early day's , and I think a lot comes back to that, and people running big power in to 4th.

David

[TOM1111]

mine handled 260rwkw fine and ive had no problems yet at 300

I do treat my car pretty well though

1300nm is just crazy blueboost and you seem to know how to make these 4 speeds last