2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

13b re swap into 87 tII

Thread Tools
 
Search this Thread
 
Old Nov 1, 2008 | 03:18 PM
  #1  
mazda_wes's Avatar
Thread Starter
404** File not Found
iTrader: (6)
 
Joined: Feb 2008
Posts: 399
Likes: 0
From: houston
13b re swap into 87 tII

first things first, i have searched for all of my answers and found most of them. still a few unanswered though.

here are my plans/questions;

1. i will premix and block off OMP. can i just remove the OMP? i hear everyone talking about blocking it off, but not removing. sounds like a stupid question, but i just have to ask.

2. i want to keep the stock twins for the first few months and possibly a full year before i go for a single conversion. i am just going to have a downpipe made to adapt to my existing Racingbeat exhaust (while i am in there, i will add another o2 sensor for wide band). will i have the room to run the twins in stock sequential mode, or would i need to go non-sequential to fit?

3. from what i understand, i can use my transmission without any adapters, right?

i am also going to go with a stand-alone, but i will post that in the engine management section as to not get flamed here. i plan on using the RE intake manifolds if they fit under the hood and i will run the RE fuel system as long as it feeds the turbos well enough. the intake(s) and intercooler will be custom fit and custom welded, so that won't be an issue.
Reply
Old Nov 1, 2008 | 03:36 PM
  #2  
pistones's Avatar
Senior Member
Tenured Member: 20 Years
Liked
iTrader: (5)
 
Joined: Oct 2005
Posts: 736
Likes: 6
From: nyc
you can use the S4 turbo omp but need to make a custom linkage to hook up to the throttle. or just premix like you said, you will need a blockoff plate when you remove the omp. the omp get oil fed into it.

how would running the twins in sequential or non sequential affect how much room they take up?

yea the stock tranny bolts up
Reply
Old Nov 1, 2008 | 04:08 PM
  #3  
mazda_wes's Avatar
Thread Starter
404** File not Found
iTrader: (6)
 
Joined: Feb 2008
Posts: 399
Likes: 0
From: houston
everyone has told me so far that the twins take up less room non-sequential than sequential. these are all FD guys though, so i guess that i can take that with a grain of salt.

i am going to premix just for the sake of the engine (don't want the OMP to either go out or just starve the engine in high boost). is there a specific place that i can find block-off plates? if not, i can fab some, but it might be just as worth it to buy them premade.

anything else that i am missing right now? please let me know if there is so that i don't run into surprises during the build.
Reply
Old Nov 1, 2008 | 07:07 PM
  #4  
*TOUCH*'s Avatar
Project P --- Pedospeed
Tenured Member 10 Years
iTrader: (29)
 
Joined: Apr 2007
Posts: 1,235
Likes: 0
From: Norfolk, VA
im not too up on my re-swaps, but i believe that like the 20b, its near impossible to run the stock twins. either way, you are already goin through alot to do the swap as it is, you might as well go all the way and strap a t-78 to that bitch!!!!
Reply
Old Nov 1, 2008 | 07:37 PM
  #5  
Turbo II Rotor's Avatar
Who Shot the Sheriff?
Tenured Member 10 Years
iTrader: (2)
 
Joined: Jan 2007
Posts: 3,858
Likes: 2
From: Aurora, CO
First off, do you have 15 grand in the bank right now? If not don't even bother, just keep your TII.
Reply
Old Nov 1, 2008 | 07:52 PM
  #6  
FrankV702's Avatar
Rotary Freak
Tenured Member: 15 Years
iTrader: (14)
 
Joined: May 2006
Posts: 1,575
Likes: 11
From: Las Vegas
In a RE swap we did in a buddies car a few years ago, we kept the twins on (non sequential) and they fit, but the stock RE piping from the turbos to the IC sat up to high and we had to cut some of the under lining of the hood to get it to fit. The brackets were custom though so that may have played a role in that fitment issue.

I'm doin an 13B-RE swap in my vert now, and I plan on keeping the stock twins for a while.
Reply
Old Nov 1, 2008 | 09:03 PM
  #7  
TitaniumTT's Avatar
Banned. I got OWNED!!!
 
Joined: Mar 2006
Posts: 1,970
Likes: 1
From: Connecticut
Without a TON of cash for an aftermkt ECU, or the factory ECU, Japanese only FSM, Cosmo ECU and splicing the harnesses together, you are not going to get the twins to run sequentially. <- Period Do some research on the rich mans non-sequential mod and go that route for a while. Personally I think the turbo's are too damn small and are more than likely useless anyway. I know mine where and I think Turbo II's were as well (Right?) Regardless, maybe you should look into buying a used S5 turbo and mani and going single for a while.
Reply
Old Nov 1, 2008 | 09:09 PM
  #8  
Turbo II Rotor's Avatar
Who Shot the Sheriff?
Tenured Member 10 Years
iTrader: (2)
 
Joined: Jan 2007
Posts: 3,858
Likes: 2
From: Aurora, CO
Yeah, I had to go with a GT40R to get it to breathe a little better. The stock twins are good for what, 240hp? I hope you don't plan to keep the stock exhaust sleeves or ports also.
Reply
Old Nov 1, 2008 | 09:13 PM
  #9  
TitaniumTT's Avatar
Banned. I got OWNED!!!
 
Joined: Mar 2006
Posts: 1,970
Likes: 1
From: Connecticut
240 or 225 was thier factory rated hp. The FD was 255 and those things have seen 350-370 RWHP regularily. I don't think that 300 is out of the question, but for how long Mine were junk when they arrived but I was never planning on using them so I didn't really care
Reply
Old Nov 1, 2008 | 09:28 PM
  #10  
Turbo II Rotor's Avatar
Who Shot the Sheriff?
Tenured Member 10 Years
iTrader: (2)
 
Joined: Jan 2007
Posts: 3,858
Likes: 2
From: Aurora, CO
Found it, 230ps 217 torque.

http://cp_www.tripod.com/rotary/pg09.htm
Reply
Old Nov 1, 2008 | 10:42 PM
  #11  
mazda_wes's Avatar
Thread Starter
404** File not Found
iTrader: (6)
 
Joined: Feb 2008
Posts: 399
Likes: 0
From: houston
alright, i will look at a single conversion before i drop in the motor. like i said before, i am planning on going with a stand-alone anyways, so i may as well get ready to start tuning for it now.

and don't worry about my bank account, i have enough to cover the swap. i also do my own work and have enough tools to break down a ******* battleship and put it back together. i am not just some kid jumping on here with my first car dreaming of what to do.

good advice so far, keep it coming if you have some more. like i said, i would rather hear all of the negative here and now before i turn a bolt.
Reply
Old Nov 1, 2008 | 10:48 PM
  #12  
TitaniumTT's Avatar
Banned. I got OWNED!!!
 
Joined: Mar 2006
Posts: 1,970
Likes: 1
From: Connecticut
Take your budget, and then double it

Rebuild the motor and swap exhaust sleeves
Reply
Old Nov 1, 2008 | 10:49 PM
  #13  
mazda_wes's Avatar
Thread Starter
404** File not Found
iTrader: (6)
 
Joined: Feb 2008
Posts: 399
Likes: 0
From: houston
also, i have talked to an exhaust builder that is local. he has talked about a custom manifold and downpipe if i want to go after market with the turbo (which i am going to do now), so turbo fitment isn't an issue. i just don't want to build a custom manifold for the stock twins. the work will be more than the turbos are worth.
Reply
Old Nov 1, 2008 | 10:53 PM
  #14  
mazda_wes's Avatar
Thread Starter
404** File not Found
iTrader: (6)
 
Joined: Feb 2008
Posts: 399
Likes: 0
From: houston
Originally Posted by TitaniumTT
Take your budget, and then double it

Rebuild the motor and swap exhaust sleeves

so, the exhaust sleeves are the weak point of the engine? i thought that engine breathed really well stock? either way, if that is the only real internal issue that i have to worry about, i will still do the swap.
Reply
Old Nov 1, 2008 | 10:55 PM
  #15  
Turbo II Rotor's Avatar
Who Shot the Sheriff?
Tenured Member 10 Years
iTrader: (2)
 
Joined: Jan 2007
Posts: 3,858
Likes: 2
From: Aurora, CO
Originally Posted by TitaniumTT
Rebuild the motor and swap exhaust sleeves
And port that bitch.
Reply
Old Nov 1, 2008 | 10:57 PM
  #16  
Turbo II Rotor's Avatar
Who Shot the Sheriff?
Tenured Member 10 Years
iTrader: (2)
 
Joined: Jan 2007
Posts: 3,858
Likes: 2
From: Aurora, CO
Originally Posted by mazda_wes
so, the exhaust sleeves are the weak point of the engine? i thought that engine breathed really well stock? either way, if that is the only real internal issue that i have to worry about, i will still do the swap.
The exhaust sleeves are restrictive. You can only remove them with the motor apart as they are held in by a roll pin on each side of the housing. TII sleeves are a direct swap. Also the intake ports on the inside of the engine are rather small but it has huge runners leading up to them. Port them.
Reply
Old Nov 1, 2008 | 11:14 PM
  #17  
mazda_wes's Avatar
Thread Starter
404** File not Found
iTrader: (6)
 
Joined: Feb 2008
Posts: 399
Likes: 0
From: houston
so, exhaust sleeve swap and intake porting. i guess while i am in there, i will go ahead with some machine work and possibly dowel the housings if that has any effect on this motor. are gaskets and seals readily available for this motor? i always prefer to have all of the parts at hand even if i have to have someone else do the work. i just like to know that all of the parts are the correct parts before they go onto my motor.
Reply
Old Nov 2, 2008 | 05:26 AM
  #18  
Banzai-Racing's Avatar
Rotary Specialists
Tenured Member: 15 Years
Liked
Loved
Community Favorite
iTrader: (11)
 
Joined: Jan 2008
Posts: 4,868
Likes: 344
From: Indiana
Here is a complete swap, broken down into stages in pictures http://www.banzai-racing.com/br_projects_vert_pg5.htm

Here are some of the conversion parts you are going to need http://www.banzai-racing.com/products_cosmo.htm
Reply
Old Nov 2, 2008 | 03:07 PM
  #19  
katkaroto's Avatar
dewey
Tenured Member 10 Years
 
Joined: Sep 2007
Posts: 580
Likes: 1
From: Minnesota
can you somehow use the 13bt harness for the 13bre engine? or do you need to upgrade everything?
Reply
Old Nov 2, 2008 | 04:08 PM
  #20  
Banzai-Racing's Avatar
Rotary Specialists
Tenured Member: 15 Years
Liked
Loved
Community Favorite
iTrader: (11)
 
Joined: Jan 2008
Posts: 4,868
Likes: 344
From: Indiana
Yes the 13bt (or even the 13b N/A) harness can be used to operate the engine. We run the FD Apexi Power FC with our adapter harnesses with an S5 TII harness in our swap.
Reply
Old Nov 2, 2008 | 07:42 PM
  #21  
katkaroto's Avatar
dewey
Tenured Member 10 Years
 
Joined: Sep 2007
Posts: 580
Likes: 1
From: Minnesota
Originally Posted by Banzai-Racing
Yes the 13bt (or even the 13b N/A) harness can be used to operate the engine. We run the FD Apexi Power FC with our adapter harnesses with an S5 TII harness in our swap.
well... all that said and done... well it work with digital tuning's rtek S4 TII ecu? without that much fabrication....
Reply
Old Nov 2, 2008 | 08:38 PM
  #22  
mazda_wes's Avatar
Thread Starter
404** File not Found
iTrader: (6)
 
Joined: Feb 2008
Posts: 399
Likes: 0
From: houston
awesome, thanks for tons of info.

i guess that i will go ahead and ask, will megasquirt support this motor?
Reply
Old Nov 3, 2008 | 01:28 AM
  #23  
ivegonemad's Avatar
rx7 killer
Tenured Member: 15 Years
Liked
Loved
 
Joined: Oct 2006
Posts: 1,908
Likes: 1
From: LOS ANGELES, HAWTHORNE
go single from start!!! we need more re guys around here, and get a borg warner s480!!

what are you planning to use the car for?

ill just get a standalone why bother splicing and dicing harnesses, seems a bit redundant to me though...
Reply
Old Nov 3, 2008 | 01:32 AM
  #24  
ivegonemad's Avatar
rx7 killer
Tenured Member: 15 Years
Liked
Loved
 
Joined: Oct 2006
Posts: 1,908
Likes: 1
From: LOS ANGELES, HAWTHORNE
Originally Posted by TitaniumTT
Take your budget, and then TRIPLE it

Rebuild the motor and swap exhaust sleeves

better! lol...or dont run no sleeves at all!!
Reply
Old Nov 3, 2008 | 06:40 AM
  #25  
Banzai-Racing's Avatar
Rotary Specialists
Tenured Member: 15 Years
Liked
Loved
Community Favorite
iTrader: (11)
 
Joined: Jan 2008
Posts: 4,868
Likes: 344
From: Indiana
Basically anything that can run a 13BT can run a 13B-RE. There is nothing super special about the engine, it even comes stock with 550 primaries and secondaries, the CAS is the same with exception to the connector. The TPS is similar to the FD, but we have a write-up on our website for wiring it in. However, with this said, cutting corners on the engine management is not the correct way to enter into this project.
Reply



All times are GMT -5. The time now is 07:08 PM.