RAV 4 XA20 Installed old Toyota 3c AWD engine

[Ather]

My bad.....installed an old toyota 3c awd engine in my RAV4 XA20......the car jams the front wheels after 4 yards. Any comments or solutions

[IanML]

One possibility, if you have hooked up the the 3c transmission to the XA20's rear drive, is that the rear diff ratio is wrong, i.e. the front and rear wheels are trying to turn at different speeds.

[daveh_rav4]

ditto...

...four yards = about one wheel rotation.  I presume there is a prop shaft of some sort to the rear wheel drive.  Drop that off and try again.  If it is gear ratios fighting each other... Mr. Toyota may have options on gears to change either in the rear axle or transfer box.  Also some sort of slip differencial may be an answer if this is the problem. Good luck... let us know how/if you resolve this ^

[Ather]

Yes daveh_rav4.....about one rotation, removed the prop shaft and its driving fine....but no AWD. Need help

[IanML]

Maybe the crown wheel and pinion of the donor vehicle will fit the XA20's rear axle?

Or, perhaps you could fit the XA20's transmission to the replacement engine?