Thrwnsprkz wrote:this thread is very helpfull, but i would like to know one thing, does anyone have any experience or know if the internals, (gears) from a vq30dett tranny could be transplanted into an rb25det tranny to rebuild it. My friends rb25 tranny just crap out on him and he was wondering this...any help with greatly appreicated
The gears and parts should all be the same, even the front shaft should be, but doubtfull that the rear shaft is the same from the looks of it.
It would be much cheaper and easier to just swap the RB25 bell housing onto a VG tranny rather then buying new or used parts for it. My 1st, 2nd, and 3rd syncro and gears needed to be replaced once I inspected it further....when it came down to replacing all the parts that needed it, ended up being around $900. Most of the gears on all pressed on there, so for all the time and money trying to make it work just to keep the rear housing, wasn't worth it at all to me. Easier switching bell housings and making a custom mount tranny mount. Also if it were to go out again, it is another cheap VG transmission and very little time dropping the tranny, switching bell housings, and then attaching it back on the motor.
That is just my opinion.