How long has your W58 or R154 lasted on higher power?

Just wondering as i want to run BPU but im wary that the box will give out. iv heard some stories of it lasting years and still going strong and others that have lasted a month.

thanks

I went GTE on the W58, and stock normally aspirated drivetrain, later on I went BPU with use of the W58, it survived the the dyno session at first but few days later it broke down, several teeth were found when draining the oil from the gearbox. It wasn't even running 1,2 bar iirc so going from my experience the w58 will last longer on stock boost from the GTE but still is an ticking timebomb on borrowed time, imo.

a friend of mine has gone through 3 w58 boxes on his NA-T running 365bhp, the R154 can take high levels of power however if you are planning on going upwards of 600bhp i'd recommend installing a uprated thrust bearing

Scott Gixer_81 has been running W58 with an eaton paddle clutch at 375bhp for 3 years and is still on the original box.

what will the tt clutch take before slipping, would have thought that would be the first problem

what will the tt clutch take before slipping, would have thought that would be the first problem

I know people who have had problems at BPU levels and others who have been fine at 450ish, however if i was pushing past that i'd go for a better one.

Littlenum has broken a few W58s, so hopefully he'll be able to advise on power levels it broke at

W58 at 1 bar - 3.5 years so far

i had a W58 running BPU at 1.1 bar, 15 runs up he drag strip and 3 days later it went stripping every tooth off the imput shaft.

Iv been running R154 at 1.2 bar with no issues, and my R154 conversion is up for sale too!

W58 at 1 bar - 3.5 years so far

any supporting mods? oil cooler etc

any supporting mods? oil cooler etc

Nothing to support the life of the box, no!

I have a 1st decat to go on and then I'll be full BPU, so it is running at the moment with colder plugs, 3.25" exhaust, 2nd decat etc. etc.

BPU on w58 @ 1bar. Its been fine since i've had it (just over a year now) but was that way for a couple of years before. Still original box, with Stage 4 CC, stock flywheel.

Considering most W58's are half *uggered to start with it's no surprise, they aren't the best torque handler on the planet. Most are noisy even in N/A format after a bit of mileage.

Considering most W58's are half *uggered to start with it's no surprise, they aren't the best torque handler on the planet. Most are noisy even in N/A format after a bit of mileage.

Killed mine while still running the NA engine.

Took it out when I did the engine swap, stripped it, replaced the damaged parts and then rebuilt it with a little modification to third gear.

It has (so far) survived four full-on track days mated to a BPU'd 1JZ with no sign of trouble.

I run a 4.3 final drive though, which would slightly reduce the torque the box has to handle while on boost.

Would imagine how the car is driven is a vital factor in this thread...

b;3581199']Would imagine how the car is driven is a vital factor in this thread...

Bingo, I'm sure there are people who cover very little miles over a few years on a TT/W58 combo and think it's fine but I bet it's never really pushed for any length of time. I'm sure they will outlast the cars they are in as they are never really pushed.

It's luck of the draw really I've heard of W58's cope with a lot more than BPU with serious abuse.(okay it failed eventually but only after several drift/track days, which with 550+bhp and tyres at 20psi for drifting is pretty good in my book)

And as others have said, some people have managed to kill a W58 with N/A power, this is quite a badge of honor and I bet is very rare on standard power. I've had first hand experience of three different W58's all receiving lots of prolonged high rpm driving and never had even a hint of trouble with any of them.

, some people have managed to kill a W58 with N/A power, this is quite a badge of honor and I bet is very rare on standard power.

I managed to rape one on a standard NA, but I am quite a heavy footed b*d. But handsome though.

Bingo, I'm sure there are people who cover very little miles over a few years on a TT/W58 combo and think it's fine but I bet it's never really pushed for any length of time. I'm sure they will outlast the cars they are in as they are never really pushed.

This is why I find mine interesting - my Supra is a daily driver and gets driven reasonably hard for a good percentage of it's total use!

This is why I find mine interesting - my Supra is a daily driver and gets driven reasonably hard for a good percentage of it's total use!

Wow what mileage has the box done?

I reckon Abz could make a W58 last a long time!

Wow what mileage has the box done?

A mix of KM and miles that is unknown to me currently reads about 117k.

To be fair mine didn't fail as a result of the torque from the engine but rather the torque from the diff due to aggressive downchanges from fourth to third.

Too much load was being put on the very badly designed third gear retaining clip and it eventually broke free of the input shaft taking all in front of it with it!

Probably the reason why a set of half used brake pads saw me through a dozen track days.