HELP differintal bolt pattern is diffrent!!!

[wrxsubaru]

I am doing a 5spd swap in my SVX today i was hoping to finish so i was working on it. I was putting on my drive shaft and it went into the trannie with no problems, but then i tried to put the 2 inch extension on the drive shaft ( 5spd is about 2 inches shorter ) and bolt it up to the rear diff, i was trying to put the bolts through when i noticed that the drive shaft extension had a larger diameter than the diff bolt patern part, then i tried to put the bolt through it and sure enough the bolts would not fit, i could only get one in. So i spent about 1/2 and hour looking and tring to see if i could get it to fit, i figured the bolt holes werent evenly spaced out, unseccesull i went inside and measured my old diff from the auto, the circle were you bolt it to the drive shaft was about 3.25 inches, I then went out side and meared my new diff, it was only at most 3 inches. I got all of my stuff from a 90 legacy wagon with a 4.11 diff ratio, the stock rear end on a SVX is 3.545, both are r 160 diffs or should be. Whats wrong???

[hatch4x4]

Did you try rotating the driveshaft 90 degrees in relation to the diff? If I remember correctly, the bolt holes are in a rectangular as opposed to square pattern.

[GLCraig]

The flanges on the diffs maybe different. You'll might have to swap them. Also a 5speed from a 90 may not be the best choice since the 1st gen Legacy 5speeds tend to grind going from 1st to 2nd.

[wrxsubaru]

I talked to the dealer guy and he siad you could swich the yoke but it would screw with the bearing settings onthe input shaft and you wouldhave to re torq them sothere was 6 foot inches of resistance to spin the shaft. Is this true?

 

I am using a 1 gen legacys 5spd becasue it was extremly cheap, and i couldalwaythrough in another cable operated 5spd in if it breaks or grinds bad.

[wrxsubaru]

Thanks alot.