w5# series gearboxes

[l1ttle_d3vil]

1. is there any major difference between the w55/6/7/8 gearboxes? considering the main reason for the upgrade to be for something that would handle power better than a t50, am I going to gain/lose anything by choosing a w58 over say a w55, other than more money?

2. is a single W5# bellhousing compatible with ALL TYPES of w55/6/7/8 gearboxes? t50s have different bellhousings for 20 or 22 spline gearboxes, so far I havent read anything like this to do with w series boxes, but can someone confirm this for me?

3. is the size of a w5# - 4a bellhousing much different to a t50/4a? there isnt a huge amount of room between my firewall and the t50/4a bellhousing currently setup in my sr. is it likely i should be looking at modifying my mounts to fit this bellhousing in??

cheers.

[Silent Knight]

1. Main differences would be the ratios that differ a bit. Sandwich plates change Alloy to Steel or the other way around (Can't remember). I'm not really sure if one or the other is actually internally stronger though...

2. Yes, all W housings are compatible with each other.

3. I have never seen a 4A housing so wouldn't have a clue. I'd suspect it would be a tad larger in diameter. Nothing a hammer to the tunnel won't fix however.

[Jason T]

http://users.tpg.com.au/users/loats/tec ... boxes.html

W58 is a monster next to a T50 from bell size to body size

[thegreatestben]

Man the w58 is a huuuuge b*tch

[blackmk3]

^ You shd have a look at the r154...

[Quint]

I always thought the W55-W57 were tiny boxes.... :/

[crnkin]

theyre tiny boxes, but t50' are tinier!

In ke35, i THINK that the nite parts bell fits, not 100%. My w55 went in no problems, but make sure you get the right shifter position, as now i have to stuff around with that.

All t50s, 21 spline and 22, have the same bellhousing bolt pattern, I have had both bolted to my ae86 bellhousing and was sweet, although if youve tried yourself otherwise id be interested to hear?

Steel sandwich plate versions are supposedly stronger, and only came behind turbo engines, but i have no idea.

The only differences are ratios. each number higher means a closer ratio, with 58 and 57 identical bar 5th (i think, or is it 58 and 59? meh). Basically, get what ever is the cheapest, and you will hardly notice the difference, and if you do, change the diff ratio, and youll be sweet.

Heres the killer. You WILL loose power with a w5x gearbox not too much, ask someone who knows heaps about thermodynamics or something, maybe 4-5 hp?

sweet

[l1ttle_d3vil]

All t50s, 21 spline and 22, have the same bellhousing bolt pattern, I have had both bolted to my ae86 bellhousing and was sweet, although if youve tried yourself otherwise id be interested to hear?

yes, i know for sure they are different - thats why my 20 spline t50 shit itself after about 1000km, because I was using a 22 spline bellhousing.
the input bearing is bigger on 22 spline and locates/seats itself in the bellhousing because of this. with a 20 spline t50 on a 22 spline bellhousing the input shaft could move back and forth a few mm and ended up stuffing the 1/2nd (IIRC) gear synchro.
ive got 20 and 22 spline t50's at home in parts, so i'll pull the input shafts out and sit them in a bellhousing and post pics up of the differences.
they are definitely different though, i ended up making up a spacer which sits on the face of the input bearing and the bellhousing..never had any problems since.

had a feeling it was just the ratios which were the biggest different.
steel sandwich plate versions - is the difference in strenght of them compared to alloy similar to 20 and 22 spline t50s?

here's a couple of pics of my setup at the moment, got a bit more room than I thought. should be enough for w55 - 4a bellhousing to fit in without mods wont it?




cheers.[/img]

[crnkin]

Shite youve got heaps of room!

Ive never heard that, but spose it sounds right bout the t50s. I had a 20spline t50 in my corona 4age for at least 10,000 kms and never had a problem (ae86 bellhousing) so maybe you didnt do the bolts up tight enough or had bad luck or?

I have no idea on the differences in strength, and many argue they are the same, but some say they are stronger. Either way its impossible to find a steel version, and theres no way you can blow a w55 behind a 4agte until you get drag racing on slicks with over 700 hp anywhos

[evil_si]

hmm why is your engine so far forward?

not sure about your setup, but i didnt have to modify the tunnel etc when we fitted a w57 into the ke30

[l1ttle_d3vil]

do all ae86s run 22 spline t50s though? maybe you had a 20 spline ae86 bellhousing...
doubt ill be making it to 700hp, not yet anyway ill just go for any w5# series I can find then...
my engine isnt really mounted that far forward, those pics make it look like ive got a bit more room than I actually do. its a bit of a mission to get the top right hand bolt off the bellhousing because its quite close to the firewall and pretty cramped...just got a few inches between the back of the head and firewall, nothing huge though.

and as for the t50 differences...here's some pics of 20 and 22 spline t50 input shafts in a t50 bellhousing...

[Jason T]

Wow this thread has a future in the sticky thread

From the left T50/W50/W55/R154



To stop a myth W50/W55/R154 gear sticks are all the same only changed when JZA80 remote shift was created.

[crnkin]

nope definitely 22 spline, as thats what its got attached to it now!

As far as im aware all 4age's came with 22 splines attached from factory...

[toyrota mota]

Helpfull site on w series g/boxs. http://users.tpg.com.au/users/loats/tec ... boxes.html

Ive got a w56 from a diesel corona (1C i think) and i remember reading somewhere that these have a stronger clutch fork pivot point????

[RomanV]

2. Yes, all W housings are compatible with each other.

You sure about that?

I'm almost 100% sure that W50 bell is different to W55/6/7.

As in, W55/6/7 bellhouses are swappable between each other, but not to W50.

[l1ttle_d3vil]

^^^yeah true, that is also on the website posted above...