kings_blend wrote:It wont bolt up, you will need to make a custom adapter, and a custom tranny mount too. From what I have read, the RB25 is the same tranny as the Z32 tranny but with different bellhousing. Can anyone confirm this?
titec2 wrote:I was talking to a local guy and he seems to remember that when he looked at this trans set-up that there were only two bolt holes that don't line up. One of the bolt holes in the trans bell housing he said is close enough that you can see 1/2 of the threaded hole in the block through it and the other will require a redrill. Can anyone confirm?
05gsxr750 wrote:i heard of a guy useing a rb25 bell housing on his sr20det trans for his rb25 car when his trans went out and people local use sr bell on ka trans when there sr tran goes out. not too sure but it might work....there's a guy on ebay selling his rb25det powered coupe right now that has a bad trans in it and he has a sr trans to throw the 25 bell on to make it work.. so im leaning towards yes but i do not know.
titec2 wrote: If i could impose on ZmasterB; i would like to have one of his many ka24de transmissions on hand for comparison. What do you think ZmasterB?
kings_blend wrote:Isnt the RB20 bellhousing compatible with the RB25/Z32 tranny then? And the McKinney driveshaft and mount are probably for the BR26 swap into an s13 or s14. Hmmm we might have all the parts readily available, we just have to put the pieces of the puzzle together.
ZmasterB wrote:Thats what I'm saying, no, the RB25/Z32 trans are 30A's (big), and the RB20's are 71C's (small, same trans as a KA/CA/SR). The bellhousing from a RB20/CA/KA/SR wont fit onto a RB25/Z32 trans.
titec2 wrote:Seems to me that if I can make this work without an adapter plate it would be a much better/easer way to get the durability of a z32/rb25 trans behind the ka. I talked with the guy form the driveshaft shop and he said that he can supply me with the correct yoke to work with the driveshaft shop drive shaft I already have and fit the rb output shaft. The guy with the rb transmission is going to bring it to my shop week after next and I will let you guys know what it is goint to take to make it work.
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