How much torque can hold the w58 gearbox?

[Raziel]

Hello how much power can hold the w58 gearbox behind a 4agte and how can I make that strengths?
It is possible to put the gearset from the r154 in the w58?
Now I have a KE70 with 300rwhp
Thanks for help

[Matt]

There is no magical power figure of what the W58 can handle. Allot of people have ran them with their 4agte for 10+ years without having to replace them. These cars have around 200kw.

Have you broken the w58? Or want something stronger now?

[Raziel]

No i will make some more power on my 4agte and I don't know that can hold this.
I think 350-400hp is the goal.

[Sam-Q]

I agree with Matt, there are so many factors like your tyre grip, vehicle weight, clutch type, gearbox condition, engine set up and the main one is your driving style. Apparently the strength can be upgraded to some degree with something to do with the bearings, I don't know anything about it though. R154 and W series gearboxes can't have parts swapped.

[Raziel]

Here my speclist:
4agze with gt2860RS @1,1 bar and e85
The clutch is a sintra metal. They can hold 440nm with pressure plat

Wheels are work equip 8x15 and 195/45 tires.
The rear end is a pajero LSD

[maxhag]

^^ Any W box will be fine for your application with the biggest factor being your driving style... If you smash thru gears carelessly at high RPMS, then anything is possible..... But, these boxes are quite capable of handling the power you have plus more if treated right

[Raziel]

@sam-Q the car wight is 1000kg wit full tank.

Maxhag
Gives any experience about this?

[maxhag]

Yes, I have used W5* boxes behind all the 4agtes Ive built, lasting 10 years +


This isn't new info we are pioneering here... This has all been covered and known for many many years now


generally speaking, they are good for 450hp, but all comes down to driving style and maintenance. People use these behind Turbo 2JZ and 1JZ motors too....

[Raziel]

Can i drift drift with it or sometimes on a race track?

The most time I will drive on the street but sometimes maybe a quatermile or a track.

[Raziel]

Is that possible?

[maxhag]

yes

[bunki86]

for some reason, ive been unlucky with them.
i get bearing and synchro issues.

ive had 2 used ones, then one of the used one rebuilt.

old motor had 390-400hp lots of clutch kicks and launches tho, pretty much zero mechanical sympathy.

[Raziel]

old motor had 390-400hp lots of clutch kicks and launches tho, pretty much zero mechanical sympathy.
What you mean?
Can you explain me?
Sorry my English is not the best.

[Matt]

He treated it really badly and didn't change gears nicely. He would have broken the gearbox no matter what it was.

Max has a few build threads , one with 4agte and w57 is here: http://www.ae86drivingclub.com.au/forums/showthread.php/75

I have seen people use W58's behind 1uzfe, 1jz and 2jz engines with allot more power than what you will have without issues. You can drift with it too, just don't abuse it too much.

[LittleRedSpirit]

I know someone with a w58 behind a worked small block chev, its pretty much at its limit, the thing will smash second gear if you give it everything on a hard shift. Its about 430 flywheel hp but its very torquey. Probably over 400NM. Its in a HG Ute, so its a lot heavier than a sprinter.

[Konakid]

My 22R turbo makes about 245hp at the wheels so around 285 hp at the engine and i have thrashed the 250,000km W55 for around 6 hillclimb events on semi slicks with hard launches and its still fine. Many dry drifting outings too cluitch kicking and all. Torque estimate is around 350 to 380NM and the car weighs 1175kg.

Ive heard that they cant take up to 400hp but it depends on driving style. Dont run too grippy rear tyres and you will probably get years of use out of one before it gives you any trouble. Especially with your car being so light.

[Raziel]

That sounds good and give me hope that can handle it. Thanks 😊👍

[maxhag]

thing to remember, even tho you might have mechanical sympathy, the previous owner might not have (if using second hand)

[bunki86]

yeh im not very nice with them. antilag launches an all with grippy tyres.
that was 400hp at wheels as well, not at motor.

[qagzie]

they say W58s can handle up to about ~ 420Nm of torque... as long as you don't do hard launches, it can survive... Gear No.3 hates high RPMs...

[Raziel]

Ok cool. Gives any upgrades for the gear no. 3?

[qagzie]

Ok cool. Gives any upgrades for the gear no. 3?

i havent heard of anything like an upgrade for the 3rd gear, unless you go for the Pfitzner type straight cut gears. they can hold up to ~ 650bhp. (http://www.ppgearbox.com.au/page.asp?productid=42).
Otherwise since we know that it's torque that kills most gearboxes... :shocked: , just keep that in mind and go easy on it.

Here's a link that to a thread discussing strengths and weaknesses of the W58.

http://www.celicasupra.com/forums/archive/index.php/t-18834.html



Max.

[bunki86]

i dont see the point of "go easy on it"
if you dont want to break box's, get a better box or remove some power.

[qagzie]

i dont see the point of "go easy on it"
if you dont want to break box's, get a better box or remove some power.

"go easy on it" simply means no shifting too quickly or clutch dumping or anything of that kind... But you're right, a better box would be the best solution.

Max.

[bunki86]

i understand what it means, but i think it is a bit silly to have a car with power you cant use, because you are worried something is going to break.

[qagzie]

you can actually get full power ~ 300+rwhp from a car with a W58, if you know when or how to shift... but something will surely break if u abuse it.

[bunki86]

i only started having problems over 350hp.

small motors with decent power, there is no nice way to drive them.


if i can ad anything they may help, dont use a super light flywheel. i have super light flywheel and lightened the whole reciprocating too much and i think thats what caused some of my shifting problems.