Gearbox Help

Corona · Post by **Corona** » Tue Sep 06, 2005 1:42 pm

All,

I need some advice on Toyota Gearboxes.

As some of you know, remember, I am in the process of organising to change the gearbox in my car. Current situation. I have a ST191 Chassis. A Gen 2 3S-GTE out of a ST-185. I currently am using a Manual Gearbox out of a ST-171.

I have a replacement gear box that I got from a wrecker the other week, but I am not 100% sure if it is the correct one or not. Apparently the box is out of a 3S-GE powered ST-202. The reason I am concerned is that the drive shafts on the box are larger than the ones that are on my car currently. I came to this conclusion this weekend as I was going around Pick A Part looking for a Manual ST-202. I found an Auto ST-202, but the drive shafts appear to be the same size as to what I have in my car now.

Question is. Have I been sold the incorrect gearbox, or do I have to find some driveshaft that fit my car and replacement gearbox.

Currently the gearbox is in Whangarei, but I can bring it down next week if there is someone who is willing to have a look at it for me to check that it is the correct one.

Thanks for you help.

Neil

Perky · Post by **Perky** » Tue Sep 06, 2005 3:12 pm

Hi Corona,

I'm afraid I'm not in a position to measure my driveshafts -- I have a manual 3S-GE ST206, which should be identical to the ST202 -- but if it's of any help, the info badge says that the transaxle is S54-06A.

Rob · Post by **Rob** » Tue Sep 06, 2005 7:17 pm

If you are after a stronger gearbox then you should try an Mr2 gearbox. All you should have to do is swap the selectors to the other side of the box

KinLoud · Post by **KinLoud** » Tue Sep 06, 2005 8:41 pm

There might be a different gearbox for the ST202/ST206 celicas compared with the earlier celicas etc.
I sold one that was out of a Superstrut Curren ST206 with LSD I'm sure it was an E series gearbox.
Anyone else with what their Celica or Curren has/had?

Ken
Ham
021 408 863

Corona · Post by **Corona** » Tue Sep 06, 2005 10:55 pm

Rob wrote:If you are after a stronger gearbox then you should try an Mr2 gearbox. All you should have to do is swap the selectors to the other side of the box

What is exactly involved with this swap? Do you have to cut and weld the castings back up for this to work, as I have herd it, but have no idea on what to do?

Corona · Post by **Corona** » Wed Sep 07, 2005 9:10 pm

Can I bring the Gear box to somebody to have a look at to see if I have the correct one?

Chickenman · Post by **Chickenman** » Fri Sep 09, 2005 8:40 am

Mmmmmm...

Too meke burnout aye Neil :wink:

Maybe (for strength and durability...) you could try and swap over some more late model celica bits? the suspension should all fit cos the chassis be pretty much the same.

Corona · Post by **Corona** » Sun Sep 11, 2005 10:42 pm

Chickenman wrote:Too meke burnout aye Neil

Na, been too scared that I'd drop the clutch and the box would go bang

Malcolm · Post by **Malcolm** » Mon Sep 12, 2005 12:40 pm

for some details as to what is needed to change to the mr2 box, read my posts in this old thread of yours:
viewtopic.php?p=335301&highlight=#335301

To change the gear selector arm you probably will need to take the housing off the gearbox, rather than cutting and welding. You'll then need to block up the hole for the old one. I have a gt4 box here you can have (free) for the purposes of taking parts off it to convert the mr2 box for fwd. Also I could tell you for sure whether you have an E series or S series box.

You might need to change your clutch also, depending on the size of the gearbox input shaft (splined bit) on what's in there now compared to what you put into it.

If the driveshafts are larger you may be able to make a hybrid driveshaft by changing CV joints. I'll bet you that a GT-Four outer CV will go onto the larger shafts on the new box and fit into your hubs, problem may simply be the length of the shafts

Malcolm · Post by **Malcolm** » Mon Sep 12, 2005 1:43 pm

well FWIW I just took the shifter arm out of the gt4 box. Easy as

You just have to remove the filler bung in the top of the gearbox, and unbolt the 4 bolts around the arm. I would imagine this means an MR2 one can be removed in a similar manner, although because it goes through a small hole there's a chance you may have to take the blank cover thing off the end and disassemble the mechanism somehow to remove it.

Corona · Post by **Corona** » Mon Sep 12, 2005 8:54 pm

I think I might have the drive shafts sused.
I got some out of a VZV30 this weekend at P.A.P. Will go up north this weekend to check that they fit in the box. I will also check that the spline is the correct sizing for the wheel hubs as well while I am at it, I will check the lengths to see if they are the correct lengths.
Once I have done all that, the swap should hopefully be sweet (all tests going in my favor).
I do know that I will need another clutch, but I gather it should be sweet to get another, I am going to ring Race Brakes tomorrow to get that orginised. (I'll also replace the driveshaft seals and the CV boots while I am at it as well.)
Do you think that there are any other traps that I might slip into?

Malcolm · Post by **Malcolm** » Mon Sep 12, 2005 9:18 pm

engine mounts and shifter linkages might be a problem also...

Corona · Post by **Corona** » Mon Sep 12, 2005 10:07 pm

I was thinking one of the mounts might be an issue, but I was going to take that one as it comes.

Thanks

Malcolm · Post by **Malcolm** » Mon Sep 12, 2005 10:29 pm

good luck mate, if you have any problems get in touch and I'll see if I can be of assistance