| Author | Topic |
|---|
Location:
Perth
Registered:
October 2002
|
|
W-5X x-member compatibility?
|
Thu, 12 February 2004 11:23
|
 |
I'm pretty definite in switching the 1JZ MA61 Supra in a stick shifter. Yay!
The auto option was always a cost comprimise, and I've found some good JZA80 gear at a good price.
Not being terribly familiar with Toyota manuals, I have three questions:
1. Do they all have bracing between the gearbox and engine? And if so, is it interchangeable?
2. Are the x-members interchangeable? That is, can I use a manual gearbox cross-member from an RA 60?
3. Can anyone recommend a good clutch? I figure I'll have somewhere in the vicinity of 300rwhp and and a smidge over 500Nm torqu in a daily driver.
Many thanks in advance.
|
|
|
Location:
Perth
Registered:
October 2002
|
|
Re: W-5X x-member compatibility?
|
Thu, 12 February 2004 11:50
|
|
Just been doing a little research into clutches. If I get the True Trac Torsen-style diff soon, I could also order an ACT Stage II clutch - which works out at $500 Aus., is rated at 520Nm and looks to be a full organic face with a sprung cetre. Is that a good price and spec.?
|
|
|
I supported Toymods
Location:
Perth
Registered:
May 2002
|
|
Re: W-5X x-member compatibility?
|
Thu, 12 February 2004 13:44
|
|
Yes, you can use an RA60 cross-member, or an MA61, externally the later model W58's are exactly the same (bar the weird shifter).
As for the clutch, I know when I'm playing out of my depth, so I spoke to the guys at the Clutch Factory (Kewdale?) and they made a recommendation for me based on power, weight of the car and my driving style. In the end they quoted me $420 for an 30% uprated pressure plate, a heavy duty Daikin clutch plate, a new thrust bearing and machining the flywheel.
|
|
|
Location:
Lost in the K hole
Registered:
May 2002
|
|
Re: W-5X x-member compatibility?
|
Thu, 12 February 2004 15:29
|
|
| justcallmefrank wrote on Fri, 13 February 2004 00:44 |
Yes, you can use an RA60 cross-member, or an MA61, externally the later model W58's are exactly the same (bar the weird shifter).
|
wrong  
the jza80 w58 has different xmember mounting bolts, in a slightly different position to the ma61 etc x-member. also the suspension cushion mount is a slightly different shape that fouls the x-member.
a big file, a drill and a bit of sweat, and it will work though 
cheers
ed
|
|
|
I supported Toymods
Location:
Perth
Registered:
May 2002
|
|
Re: W-5X x-member compatibility?
|
Thu, 12 February 2004 15:33
|
|
|
Why the hell did they change that?
|
|
|
Location:
Lost in the K hole
Registered:
May 2002
|
|
Re: W-5X x-member compatibility?
|
Thu, 12 February 2004 15:35
|
|
*shrug*
its a pita to find right in the middle of a conversion too... 
lucky i have a friend with a mill...
|
|
|
Location:
c'town, NSW
Registered:
May 2002
|
|
Re: W-5X x-member compatibility?
|
Thu, 12 February 2004 21:23
|
|
|
dont forget about the GA70 box Xmember is also different again.
|
|
|
I supported Toymods
Location:
Perth
Registered:
May 2002
|
|
Re: W-5X x-member compatibility?
|
Fri, 13 February 2004 00:45
|
|
|
But the bolts for the crossmember on the gearbox themselves are the same as the earlier ones are they not?
|
|
|
Location:
c'town, NSW
Registered:
May 2002
|
|
Re: W-5X x-member compatibility?
|
Fri, 13 February 2004 01:05
|
|
nope the studs on the rubber mount on the JZA80 gearbox are different to the holes ma61 xmember.
we had to use the mill to elongate the holes diagonally outwards
when i get home i will find the pics and host them.
|
|
|
I supported Toymods
Location:
Perth
Registered:
May 2002
|
|
Re: W-5X x-member compatibility?
|
Fri, 13 February 2004 01:08
|
|
|
Nah, I thought you meant he GA70 box had different cross-member bolt positions as well.
|
|
|
Location:
c'town, NSW
Registered:
May 2002
|
|
Re: W-5X x-member compatibility?
|
Fri, 13 February 2004 01:34
|
|
ohh.
the GA70 one is shorter length wise. it wont bolt up the the MA61 floorpan
|
|
|
I supported Toymods
Location:
Perth
Registered:
May 2002
|
|
Re: W-5X x-member compatibility?
|
Fri, 13 February 2004 01:37
|
|
|
Are you talking about the cross-member or the box itself?
|
|
|
Location:
Brisbane
Registered:
May 2002
|
|
Re: W-5X x-member compatibility?
|
Fri, 13 February 2004 02:14
|
|
Yes, the later model W58 has a different number of bolt holes on the extension housing compared to the early W58 (I can't remember if there's an extra two or if two are missing) which means you have to use the rubber block specific to that box. As mentioned the studs on the rubber block aren't compatible with the early W58 crossmember, but it's not a big deal to modify it, ie elongate the holes a little and use big washers. 
FWIW the auto crossmember that came with my Aristo is the correct width for the MA61 trans tunnel and the bolt holes almost line up perfectly with the threaded holes in the floorpan (again a little elongation is required). The only reason I didn't use this is because it would have mounted the engine further forward than I'd like.
|
|
|
Location:
c'town, NSW
Registered:
May 2002
|
|
Re: W-5X x-member compatibility?
|
Fri, 13 February 2004 02:15
|
|
GA70 gearbox xmember is too short to bolt into a MA61 floorpan.
one side will bolt to the floorpan fine, the other size will be an inch or so too short.
|
|
|
I supported Toymods
Location:
Australia
Registered:
November 2003
|
|
Re: W-5X x-member compatibility?
|
Fri, 13 February 2004 03:01
|
|
Couldnt you have just swapped the whole rear housing of the near W58, and put on the old W58 rear housing?
Thus using the original mounts and xmember?
|
|
|
Location:
Brisbane
Registered:
May 2002
|
|
Re: W-5X x-member compatibility?
|
Fri, 13 February 2004 04:11
|
|
Yes that would have been possible as well, although I vaguely remember there being some minor annoying difference between the two... something about how the selector rod fits inside the housing. In any case I decided it was a better idea to modify the crossmember, for some reason!
|
|
|
Location:
Lost in the K hole
Registered:
May 2002
|
|
Re: W-5X x-member compatibility?
|
Fri, 13 February 2004 11:30
|
|
|
the mkiv selector shaft has a different interface with the shift fork thus you cant swap it over directly between boxes
|
|
|
Location:
Brisbane
Registered:
May 2002
|
|
Re: W-5X x-member compatibility?
|
Sun, 15 February 2004 03:07
|
|
Ah yes, that was it! Thanks Ed.
|
|
|
Location:
Perth
Registered:
October 2002
|
|
Re: W-5X x-member compatibility?
|
Mon, 16 February 2004 06:30
|
|
Great, thanks guys!
As I already have the Chaser auto x-member in place, I'll start by seeing how it would go with the W58. Failing that, it looks like I have plenty of options!
|
|
|
