Potential project opinions needed!!!

SHPmainMAN · 02-23-2009, 11:15 PM

I am going to need a few smart opinions from some people who have been under a few cars.

Just recently i was bitten in the ass by the offroad racing bug. But i have this disease called "Rotary" running through my blood.

So i am contemplating a very custom project called 1.3RS, some of you may already have an idea of what im thinking of.

I want to take a Subaru 2.5RS coupe maybe around a 1999 or a bug eye 2.5RS and mount a transverse 13b into it to retain the AWD. i have not researched into this project really at all. i have not looked at the transaxle of the Subaru nor have i really dove too deep into fitment issues.

If this project is possible and i have enough support, i will continue this venture and i will most likely be fabbing a lot of parts for this project, but i am willing to start this if i can get some opinions on it and some help on research.

I guess the first step is to pull the engine in my TII and start the porting. Then im going to have to find the subaru donor car.

Whizbang · 02-23-2009, 11:19 PM

i wont lie. i have wanted to do this EXACT project for a long time but like the tools. The 13B is not as long as a boxer engine and i think that it would help reduce the frontal weight issue the motors have.

That said i would buy a kit from you. or two.

Phoenix7 · 02-24-2009, 12:32 AM

Don't do the bug-eye...it's fugly.

Go look at a subbie and check how the engine is mounted......I'd be interested to see this swap just because I've never seen it before.

Whizbang · 02-24-2009, 12:33 AM

its mounted like a typical rwd vehicle.

Phoenix7 · 02-24-2009, 12:50 AM

Quote:

Originally Posted by Low Impedance

its mounted like a typical rwd vehicle.

I meant the mounts...isn't the subbie mounted transversely??

How's the awd set up?

Whizbang · 02-24-2009, 12:54 AM

85rx-7gsl-se · 02-24-2009, 01:10 AM

Yeah, I knew it was layed out north/south...Thats why the whole transverse comment through me lol.

WE3RX7 · 02-24-2009, 09:47 AM

Should be doable as far as the fitment. I often wondered this project myself as I love the 2.5RS body...

It will definitely take some fab and some patience, but there wouldnt be anything like it for sure, and if you could simplify it enough, I'm sure you would be able to sell kits based on the design....

RotaryProphet · 02-24-2009, 09:56 AM

The only issue I see really (as long as you're willing to make your own motor mounts and such, which it sounds like you are) is finding (or making, if you're brave enough) an adapter to fit the 13b to the original trans, and locating the starter, as it looks like the axles on that trans will wind up in the same place as a Mazda starter. Didn't they make a rotary with a top mount starter at some point?

Clutch disk is easy, there are lots of places that will make them custom for you, with the Subaru input shaft splines and the Mazda diameter.

bigtony08 · 02-24-2009, 10:06 AM

i would be worried if the tranny and driveline could handle 9grand and not break cause subaru axles def are not the strongest

Whizbang · 02-24-2009, 10:53 PM

Quote:

Originally Posted by bigtony08

i would be worried if the tranny and driveline could handle 9grand and not break cause subaru axles def are not the strongest

all that rotary torque...

that and the redline of a STI and the redline of most rx7s isnt too far off.

13brew - STI?

need RX7 · 02-25-2009, 12:27 AM

call it WRX-7

Whizbang · 02-25-2009, 12:50 AM

Quote:

Originally Posted by need RX7

call it WRX-7

winner.

bigtony08 · 02-25-2009, 02:05 AM

Quote:

Originally Posted by Low Impedance

all that rotary torque...

that and the redline of a STI and the redline of most rx7s isnt too far off.

13brew - STI?

true but you have to think he is going with a 2.5rs chassis but really it all depends on what he does aftermarket. anyway good luck with the build cant wait to see the finished product

SHPmainMAN · 02-24-2009, 11:43 AM

ok now that i just got learned on subaru, and i know that they dont have transverse engines... i am a lot happier, and thats going to make this project a lot more fun. Thanks for the input guys, if you have anymore please let me know.

02-23-2009, 11:15 PM	#1
SHPmainMAN SHP Motorsports Join Date: Jun 2008 Location: Michigan Posts: 256 Rep Power: 18	Potential project opinions needed!!! I am going to need a few smart opinions from some people who have been under a few cars. Just recently i was bitten in the ass by the offroad racing bug. But i have this disease called "Rotary" running through my blood. So i am contemplating a very custom project called 1.3RS, some of you may already have an idea of what im thinking of. I want to take a Subaru 2.5RS coupe maybe around a 1999 or a bug eye 2.5RS and mount a transverse 13b into it to retain the AWD. i have not researched into this project really at all. i have not looked at the transaxle of the Subaru nor have i really dove too deep into fitment issues. If this project is possible and i have enough support, i will continue this venture and i will most likely be fabbing a lot of parts for this project, but i am willing to start this if i can get some opinions on it and some help on research. I guess the first step is to pull the engine in my TII and start the porting. Then im going to have to find the subaru donor car. __________________ SEIBON Summer Special For FD and RX8 1990 Canadian GXL-TII Raffle. Vote NOW!!

02-23-2009, 11:19 PM	#2
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 20	i wont lie. i have wanted to do this EXACT project for a long time but like the tools. The 13B is not as long as a boxer engine and i think that it would help reduce the frontal weight issue the motors have. That said i would buy a kit from you. or two. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

02-24-2009, 12:33 AM	#4
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 20	its mounted like a typical rwd vehicle. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

02-24-2009, 12:54 AM	#6
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 20	__________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

02-25-2009, 12:27 AM	#12
need RX7 Clean S4 Nutswinger Join Date: Mar 2008 Location: Sterling Heights, MI Posts: 485 Rep Power: 18	call it WRX-7 __________________ -Ted -1986 Mazda RX7 Sport [DD/beater]: engine finally let go at 205k. parts car status. -1986 Mazda RX7 base [resto-mod project]: S5 n/a swap in progress.

02-24-2009, 09:47 AM	#8
WE3RX7 RCC Addict Join Date: Feb 2008 Location: VA Posts: 1,812 Rep Power: 19	Should be doable as far as the fitment. I often wondered this project myself as I love the 2.5RS body... It will definitely take some fab and some patience, but there wouldnt be anything like it for sure, and if you could simplify it enough, I'm sure you would be able to sell kits based on the design....

02-24-2009, 09:56 AM	#9
RotaryProphet Rotary Fanatic Join Date: Sep 2008 Posts: 147 Rep Power: 17	The only issue I see really (as long as you're willing to make your own motor mounts and such, which it sounds like you are) is finding (or making, if you're brave enough) an adapter to fit the 13b to the original trans, and locating the starter, as it looks like the axles on that trans will wind up in the same place as a Mazda starter. Didn't they make a rotary with a top mount starter at some point? Clutch disk is easy, there are lots of places that will make them custom for you, with the Subaru input shaft splines and the Mazda diameter.

02-24-2009, 10:06 AM	#10
bigtony08 obsessed rotard Join Date: Jan 2009 Posts: 249 Rep Power: 17	i would be worried if the tranny and driveline could handle 9grand and not break cause subaru axles def are not the strongest

02-24-2009, 11:43 AM	#15
SHPmainMAN SHP Motorsports Join Date: Jun 2008 Location: Michigan Posts: 256 Rep Power: 18	ok now that i just got learned on subaru, and i know that they dont have transverse engines... i am a lot happier, and thats going to make this project a lot more fun. Thanks for the input guys, if you have anymore please let me know. __________________ SEIBON Summer Special For FD and RX8 1990 Canadian GXL-TII Raffle. Vote NOW!!