20v + E58 gearbox

[sergei]

Today I destroyed my 6speed BZR box. I was driving in traffic when suddenly I felt bang and my front wheels momentary locked up, then let go then locked up again. So I slowly pulled up (probably looked like rabbit jumping) and got my friend to tow my car back to work. While towing it rolled ok but I still could feel something jamming up (slightly, not as bad as if I would try to drive). This is second time when something in the diff area gives up on me. BTW I do not do the following things:
Burnouts.
Launches.
"Double Clutching" (not the type the truckers use).
I do not understand why theese particular gearboxes are so $&#$% weak.
I know I have blown pinion and crown gear. Thats what simptoms point to.
I have checked for "new" holes in the gearbox, oil leakage and broken shafts none of that was present.

So the question is: will E58 (the one from AE101 GZE with LSD) fit to my 20v (silvertop) providing that I get it with the shafts? I want to retain my flywheel, so what clutch can I use?

I will post pics of the damage when I am going to pull the bloody thing apart.
I am very sick of bloody 20v and their shitty gearboxes which can't even handle overrated torqueless engine. So I am thinking of getting a ST205 for a change (later on of course).

Of course some one might know a way of fixing (economically) my current gearbox with stronger bits...

[flygt4]

pretty sure they fit to the block, if you use the shafts as you say.

101 lsd boxes arent exactly common, youll pay ~5-600 for one with shafts.
unless your name starts with a B , e series boxes are almost unbreakable . but they typically have shit synchros too, unless they are rebuilt or in almost new condition. they also have really long ratios, not that suited ot the "overrated torqueless" 20v engines. when i wind out to 8500 in 3rd my speedo reads ~165km. they are also F'n heavy.

I think silvertops use a 212mm clutch, not the 225mm that gze's have, someone whos know better will be able to say whether they fit the same flywheel, but i suspect they wont.

arent ae111 5spd's meant to be better than the 6's anyway?

[sergei]

Well 5-600 is TWICE cheaper than another 6speed.
I don't really want to touch another C series box with 2 meter pole.
I know about ratios, they are longer but it is not that bad, and mostly important that the second gear is almost the same.
I am quiet happy with my E gearbox on GT4 (ST205 gearbox on ST165), it is very nice in terms of syncros and feels very solid.
What I am concerned about is the input shaft on the gearbox being different size to C series (means that I have to go custom clutch..)

[sergei]

Other question:
If I get ST205 box and pull the internals out (with all the great syncros it has, and crown wheel and pinion) and chuck them in GTZ box will I have gear ratios of ST205?

[20v_rollaboy]

The input shaft on the 4agze lsd box is bigger than the 4age gearboxe`s input shaft.

Therefore will have to use 4agze clutch.

4agze clutch will not fit on 4age flywheel. Will need 4agze lsd flywheel.

As for ratio`s, I have heard they are the same as the 4afe gearboxes. Very long. My car with 4afe gearbox = 1st:65, 2nd:120, 3rd:170


If you would like to compare anything, I have a 4agze lsd box in my garage. With shafts:)

[Mr Revhead]

personally i think you should go back to a 5 speed c56
the problem with the 6 speed i beleive to be the FGR gears are thinner to make room for the 6th gear. the only issue if ever heard of with them is this gear failure.
whereas the c56 doesnt have that problem and the only times iv ever heard of c52 or c56 failing is when being abused, and i mean really abused.

a E series box is a lot heavier and the drag from the gears lot higher so i personally beleive that to not be the best way to go, even if you can do something make the ratios better

[Akane]

I have spoken to someone in Hong Kong who has a BZ-R with a dead 6speed too, although this was ages ago, he end up rebuilding it and putting a TRD LSD in it, but it wasn't done right and the synchros are all screwed.

He told me he wasn't a "hardout racer", and it still blew up on him.

Maybe get a 5speed?

[Mr Revhead]

the TRD lsd will have stronger spider gears, but they use the stock crown wheel so its not eliminating all the weak spots

[flygt4]

as a demonstration of how heavy an e series box is, you're welcome to come and lift mine onto the side of my engine for me

[sergei]

I have an idea how heavy it is, in fact I got GT4 one lying in my back yard

[sergei]

Other thing that someone mentioned in here: will a crown ring/pinion fit from a C5X to C160?

[Mr Revhead]

the TRD FGR for the ae111 specifies 5 speed only.....

[sergei]

Ok I have pulled apart my blown C160, here are the pictures:

[flygt4]

ouch

[bluemaumau]

what a rapist

[sergei]

what a rapist

I didn't even try

[crispy'86]

hhhmmm interesting, what are you going to do now, put 5 speed into it??

[sergei]

fixing, already got most of the bits (like crow wheel and shaft)...

[mycoolcar]

This has got me re-thinking buying a BZR.

[sergei]

IF you ever get BZR DO NOT:
get a 4 puck or any other racing clutches
do not drop clutch with sticky wheels and and sticky surface
avoid dropping clutch at all costs.
be very careful on wheelspinnig on dusty road, sudden grip will kill the gearbox.
avoid wheel spin at all costs.
avoid letting go the gas at 8000rpm before sharp corner and planting it back on while negotiating corner (I love to do that).
avoid driving like a monkey with a handgrenade which missing safety pin (sometimes I do that).
avoid flatshift or any other fancy shift techniques (I actually do not practice this, except maybe hill and toe)

So if you follow that list you will be safe on gearbox side of things....
This is second gearbox I destroyed in the diff department, so it must be my driving, but as I said earlier I do not do burnouts, flat shift or anything like that, but I like to go fast in the corners, I do not like drag racing and I do not like straight line speed by itself it, straight roads are just means to accelerate and get to the corners .