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S12 Technical Areas => Engine Tech => ENGINE: Exotic Engine Swap Tech => Topic started by: Prince on 09:29:42 PM / 18-Apr-08

Title: Rb25det
Post by: Prince on 09:29:42 PM / 18-Apr-08
i have a stock v6 s12 and im wondering will i have tranny problems in fitting a rb25det in my car? driveshaft? mounts? any ideas...?
Title: Rb25det
Post by: Draconis on 10:40:57 PM / 18-Apr-08
Yes, everything has to be rebuilt to fit it all.
Title: Rb25det
Post by: Arro on 10:52:00 PM / 18-Apr-08
Yes, but damnit, a 60 second search would have told you YES, YES, YES!

And I'm not a search nazi normally. But man that was a total n00b move.
Title: Rb25det
Post by: RB25sx - SLPR on 10:54:05 PM / 18-Apr-08
LoL...

Yes to all..

-Dan
Title: Rb25det
Post by: Draconis on 11:00:07 PM / 18-Apr-08
As Dan/RB25 or I.  We can tell you just about everything you will need to do.  It's great fun after all the work is finished, but getting there is a pita... sometimes depending on the situation, not even worth it.
Title: Rb25det
Post by: RB25sx - SLPR on 11:19:48 AM / 19-Apr-08
Quote from: Draconis
As Dan/RB25 or I.  We can tell you just about everything you will need to do.  It's great fun after all the work is finished, but getting there is a pita... sometimes depending on the situation, not even worth it.


You need to be mentally sick in the head to beging a swap like this, is what he is trying to say.

-Dan
Title: Rb25det
Post by: Draconis on 11:33:52 AM / 19-Apr-08
Quote from: RB25sx - SLPR
You need to be mentally sick in the head to beging a swap like this, is what he is trying to say.

-Dan

Okay, so Dan wants to be a bit blunt about this... but yes.  Nice one Dan.
Title: Rb25det
Post by: falkhen on 01:11:04 PM / 19-Apr-08
only the hard core at heart may only attempt this at all...

on personal note the 4 cyclinder sub frame is easier then v6 version.
Title: Rb25det
Post by: Draconis on 02:08:25 PM / 19-Apr-08
Quote from: falkhen
on personal note the 4 cyclinder sub frame is easier then v6 version.

This is in relation to modifying the front subframe to make the motor mounts seat correctly due to the angle and stuff.
Title: Rb25det
Post by: RB25sx - SLPR on 02:27:14 PM / 19-Apr-08
Never compared the V6 vs I4 subframes.. I used a 240sx subframe which upon reflection doesnt really matter.

Why? Because the RB motor mounts sit SO far forward (almost 8 inches) I didnt want to risk creating a huge moment arm of a mount. I actually built the mounts off the frame rail in true 'v8 muscle' style. The frame needed to be beefed up and lots of welding was done but I prefer this approach to creating a big 'ol offset piece of steel - not to say these types of mounts havent been used with great success, because they indeed have.

-Dan
Title: Rb25det
Post by: Prince on 08:17:59 PM / 20-Apr-08
yes i have 2 friends to help me out......now should i install this motor is it an easy job? what about a driveshaft? custom made
Title: Rb25det
Post by: RB25sx - SLPR on 08:29:56 PM / 20-Apr-08
Quote from: Prince
yes i have 2 friends to help me out......now should i install this motor is it an easy job? what about a driveshaft? custom made

Here is my swap thread.

6 PAGES OF DOCUMENTATION...

RB25det swap (http://club-s12.org/v3/index.php?topic=13929)

-Dan