Jump to content

Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse

- - - - -

Frankenmotor/Automatic transmission combo?

  • Please log in to reply
9 replies to this topic

#1 xbeerd



  • Members
  • 1,023 posts
  • Milwaukee, WI

Posted 17 July 2013 - 08:22 PM

anyone besides me running a frankenmotor (ej25d-ej22dualport heads) with an automatic trans? 


im wondering how yours runs compared to mine,   my trans is tired, 175k, and im pretty sure its never had a fluid/filter change.(on my to do list).   its a 4.11.   i'm probably going to swap it with a 4.44 auto i have from a 05 impreza if i can get the axle stubs to swap, (*free trans! woo!)


my power seems to lack untill about 2700rpms,  i get a jolty hard shift into 2nd sometimes, and hard downshifts at times.  im assuming this to mostly be my tired trannys doing?


anyways.. just looking for experiences with frankenmotor on auto trans cars.

#2 redXTwedgie


    Advanced Member

  • Members
  • PipPipPip
  • 84 posts
  • portland or

Posted 17 July 2013 - 08:52 PM

I have this setup with the delta cams in my 95 impreza with AT.  The motor and trans seem to match really well.  When I get on it a little, it won't downshift like before.  And then it screams when it does downshift.  It gets about 23mpg city so that's decent.  I' m pretty happy all around with it.  EL headers and WRX exhaust soon to come. :)  

#3 Crawlerdan


    Eat, Live, Breath Subaru

  • Members
  • 489 posts
  • montana

Posted 17 July 2013 - 09:32 PM

i did this to a customers car- ran like a raped ape

#4 xbeerd



  • Members
  • 1,023 posts
  • Milwaukee, WI

Posted 18 July 2013 - 06:26 AM

LOL... is a raped ape a good thing or a bad thing ?!?!?  ahah


mine will downshift and squeal tires at higher speeds

#5 Gloyale


    It's a sickness

  • Members
  • 10,929 posts
  • Corvallis, OR PNW

Posted 20 July 2013 - 12:30 PM

LOL... is a raped ape a good thing or a bad thing ?!?!?


mine will downshift and squeal tires at higher speeds


You've got an ape you keep around just for that?


Raped Apes have been known to do some pretty crazy stuff!

#6 Subruise


    Official Party Pooper

  • Members
  • 1,568 posts
  • pierce county

Posted 20 July 2013 - 02:08 PM

raped apes run differently depending on whats chasing them

#7 monstaru


    wow, relevance....

  • Members
  • 4,453 posts
  • OlyWa

Posted 22 July 2013 - 06:56 PM

I had this combo In STELLA with a "locker" switch for the center diff.
It worked really well. I could flat tear spoob up with that car.
235's with a lot of traction to boot.....

Oh yeah,
Raped Ape lol

Edited by monstaru, 22 July 2013 - 06:56 PM.

#8 zombieforce


    Advanced Member

  • Members
  • PipPipPip
  • 62 posts
  • Knoxville,TN

Posted 01 April 2014 - 05:43 PM

I just did this swap in my 96 outback. I never drove the car before , bought it and motor blew up on way home. I used dual port 2.2 heads and ej25d block. Seems to run ok this is only my second day driving it. I was hoping for a lot more but I guess we will see. I dont get squealing tires, but it seems to be a little stronger than a standard na ej . I want to open up the intake and exhaust and see what that does for it. Delta cams arent ruled out either but had to get it goin as fuel for my wrangler was killing me. I guess I should say hi since this is my first post too. So hi.

#9 MilesFox


    Catch this Fox!

  • Members
  • 10,686 posts
  • Madison/Milwaukee, WI

Posted 01 April 2014 - 07:52 PM

the forester is like this, sometimes slow to downshift, but hit the throttle just right at the right speed, it will go. I think it has to do with the AT shift pattern. Sometimes the trans wont kick down since there is enough torque to lg the higher gear. Sometimes it seems to shift right in the middle of the rpm curve where you want it to keep winding up.


Manually shifting corrects this :)

#10 zombieforce


    Advanced Member

  • Members
  • PipPipPip
  • 62 posts
  • Knoxville,TN

Posted 01 April 2014 - 07:58 PM

Cool will have to try manually shifting it. Ireally am not used to auto trans at all. It doesnt seem toike to downshift if it doesnt have to.

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users