1G 1g intermediate shaft bracket differences

[bertrenolds]

So I have a 91 fwd dsm and had an awd intermediate shaft that lined up fine, had to get 2 shafts before I got it to work the first time and noticed differences between the bracket that did work and the one that didn't work. Now I swaped a rebuilt 90 fwd transmission in my car and the exact same intermediate shaft that worked with my 91 transmission doesn't work with my 90 transmission because the bolt holes don't quite line up. Is it possible that I need a 90 intermediate shaft bracket to make it work or did I do something wrong? I did read about lining up the transmission correctly but since all of my transmission bolts are in and torqued down correctly I figure it would be hard for the tranny/engine pins to not be alligned.
Anyone know the numbers for a 90 intermediate shaft bracket?

Here is a pic of the 2 brackets that I have, the one on the left is the bracket that worked with my 91 tranny/engine before.

You must be logged in to view this image or video.

 

[bryanwheat]

They should bolt on any 4g63 block from 90-99. Also fwd's don't come from the factory with an intermediate shaft. They just have a long shaft on the driver side.

 

[bertrenolds]

I know they don't come with an intermediate shaft, I put it on there to make equal length halfshafts, come on.

And from my experience your answer is incorrect because the bracket changed in 96 for sure so your answer should be 90-96 but from my experience again this is not true unless there was something wrong with one of the 2 halfshafts I had when I did the equal length mod last year.

I took off my AC bracket to see if that was interfearing and it still doesn't line up so I will try pressing my other bracket back on and see if maybe my AC bracket was a little off when I tried it the other day.
There is just a little bit of room to move the AC bracket when you loosen the bolts so maybe I had to adjust it a tad to make it work.

I also think I'm gonna go with the MB297732 spacer and get rid of my AC bracket since I don't have AC.

 

[9!'clipseDOHC]

They should bolt on any 4g63 block from 90-99. Also fwd's don't come from the factory with an intermediate shaft. They just have a long shaft on the driver side.

No. The AWD's from 90-99 had the same spline count. The FWD's from 90-92 have the same AWD spline count. The FWD's from 92-99 have a larger spline shaft where the axles goes into the transmission and are incompatible with the AWD axles.

Please refrain from guessing in the tech threads. If you don't know the answer it is better to wait for someone who does. What he is doing is an Equal Lenght Half Shaft (ELHS) Mod. This is a very common mod for FWD 1g's. Check out my tech article for more info: http://www.dsmtuners.com/forums/articles-drivetrain/402528-equal-length-half-shafts-mod-awd-axle-fwd.html.

I took off my AC bracket to see if that was interfearing and it still doesn't line up so I will try pressing my other bracket back on and see if maybe my AC bracket was a little off when I tryed it the other day. There is just a little bit of room to move the AC bracket when you losen the bolts so maybe I had to adjust it a tad to make it work. I also think I'm gonna go with the MB297732 spacer and get rid of my AC bracket since I don't have AC.

When I first did my ELHS swap, my intermediate shaft bolted up perfect, first try. When I pulled my trans and installed my Quaife LSD and put everything back together, it wasn't lining up correctly. I had to pry down on the drivers axle to get it to bolt up. After this my intermediate shaft was leaking fluid from the axle seal. I do not know if this was entirely due to the position of the shaft or from some damage to the seal while trying to remove the diff bearing race during the Quaife install. 2 weeks later I pulled the trans again to fix my slipping clutch (of course it wasn't slipping 2 weeks earlier when I had the trans off the first time). While it was off I cleaned up the inside where the axle seal goes and replaced it with a new MD707184. When I put everything back the intermediate shaft again lined up perfectly. I tell you this story because I don't know why it didn't line up right the one time and it did the other two times. In all three scenarios the transmission was lined up and torqued down. You may be experiencing a similar issue because based on my research the axle should be the same from 90-91. Maybe someone with access to CAPS can confirm this.

 

[bertrenolds]

It's crazy because the picture I posted of the 91 bracket and the other bracket that I have no idea where it came from and according to the caliper the complete width of the part of the bracket that the bearing presses into is actually shorter on the 91 bracket. So unless the shafts are not being pressed in perfectly vertical which I doubt I am honestly leaning towards there being different backets for each year. I pressed the 91 bracket back on and tryed it again and the holes are almost there and maybe I could force the bolts in there but this is exactly like the last time I had bracket issues and I honestly think I need a bracket off a 90. Who knows, maybe the actual shafts are different lengths and that's what's causing my problems, they did have different lengths for 2g intermediate shafts. All I can say is that it sucks that this is keeping my car off the road and I will eventurally figure it out, it's only a matter of time. Now I really wish I had gotten that 91 built FWD tranny someone local had damit!

 

[bertrenolds]

9!'clipseDOHC, you were right about putting the spline in the tranny and then pulling down on the bracket hard to get the bolts threaded. I loosened up the transmission bolts and the motor mount and then bolted on the intermediate shaft. I got the 91 bracket from the picture to fit with the 90 transmission, I just had to force it down a little but it's in there. And Since I went and picked up a 90 intermediate shaft I can tell you there is no difference from a 90-91 intermediate shaft. The one I have from the picture above that didn't work must be from a 2g or something.

 

[9!'clipseDOHC]

9!'clipseDOHC, you were right about putting the spline in the tranny and then pulling down on the bracket hard to get the bolts threaded. I loosened up the transmission bolts and the motor mount and then bolted on the intermediate shaft. I got the 91 bracket from the picture to fit with the 90 transmission, I just had to force it down a little but it's in there. And Since I went and picked up a 90 intermediate shaft I can tell you there is no difference from a 90-91 intermediate shaft. The one I have from the picture above that didn't work must be from a 2g or something.

Glad that you got it bolted on! Keep an eye on it and make sure it's not leaking. Let me know if it does or not if you don't mind.

 

[bertrenolds]

I'm sorry I was wrong, it was probably an intermediate shafts from an auto, not a 2g because the spline count is different. My bad.

And I did think about drilling the holes but I got rid of the AC bracket and measured up washers at a guess to 8mm but you should have a torque wrench and torque no more then 30ftlbs with thread lock and you should be ok. Don't bottem them out, get a torque wrench and do it right? I am ordering the spacer MB297732 to replace the washers.