FA20 to FA20T conversion - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

nonicname returns · 01-09-2015, 01:22 PM

This might've been discussed in the forum before but i cannot find it.
How hard would it be to upgrade the FA20 with wrx engine internals
And add an after market turbo?

Except for the turbo kit everything would be OEM.
That would yield low end torque curve i want from the wrx.

How many parts would need to be replaced?
I'm thinking pistons, rods, cams?
What else?

350matt · 01-09-2015, 03:44 PM

I'd be surprised if the piston was different, I suspect the rod is the only mechanical change, a more robust and slightly shorter part to drop the compression

nonicname returns · 01-09-2015, 06:15 PM

Interesting, i've never thought about that but
It would make sense i guess.
I cant believe this subject is nowhere to be found.
I want the torque i'll never get out of the
Current compression.

tahdizzle · 01-09-2015, 06:35 PM

I think its because the aftermarket would probably be a cheaper solution and better suited to a person's wants.

nonicname returns · 01-09-2015, 07:13 PM

Quote:

Originally Posted by tahdizzle

I think its because the aftermarket would probably be a cheaper solution and better suited to a person's wants.

Fair comment. I'm willing to pay a little extra
Knowing OEM parts are in my engine which have
Been tested to some thorough standards.

Dipstik-sportech · 01-09-2015, 07:35 PM

Just call up subaru and price out a short block from the fa20dit. The pistons are most likely different due to the different injection setup as direct injection relies on the crown shape for fuel mixing.

Basket Case · 01-10-2015, 10:36 AM

Quote:

Originally Posted by nonicname returns

Fair comment. I'm willing to pay a little extra
Knowing OEM parts are in my engine which have
Been tested to some thorough standards.

I think you are underestimating the strength of factory internals...

rusty959 · 01-10-2015, 10:42 AM

If you swap out internals at all, you will be losing some of the reliability that is typically perceived in an engine built by subaru.

If all you are wanting is the low end torque, just get a smaller turbo. The factory wrx turbo runs out of steam pretty quickly at high rpm's, which is the trade off for making boost so early. The fa20dit engine with a "Aftermarket turbo" will no longer have the same torque curve as the factory engine unless you get one with similar specs as the factory one..

I know you are talking about swapping out internals instead of the entire engine, but this thread may still help if you haven't seen it: http://www.ft86club.com/forums/showthread.php?t=69032

mwjcyber · 01-10-2015, 11:46 AM

http://www.ft86club.com/forums/showthread.php?t=79549

mwjcyber · 01-10-2015, 11:54 AM

FA20DIT BRZ @ STOHL RACING
http://www.ft86club.com/forums/showthread.php?t=79549

01-09-2015, 01:22 PM	#1
nonicname returns Senior Member Join Date: Sep 2013 Drives: 4 wheels Location: the world Posts: 112 Thanks: 6 Thanked 15 Times in 10 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	FA20 to FA20T conversion This might've been discussed in the forum before but i cannot find it. How hard would it be to upgrade the FA20 with wrx engine internals And add an after market turbo? Except for the turbo kit everything would be OEM. That would yield low end torque curve i want from the wrx. How many parts would need to be replaced? I'm thinking pistons, rods, cams? What else?

01-09-2015, 07:35 PM	#6
Dipstik-sportech Senior Member Join Date: Oct 2012 Drives: 2013 BRZ satin white pearl sportech Location: Thunder Bay Ontario Canada Posts: 1,813 Thanks: 842 Thanked 911 Times in 576 Posts Mentioned: 43 Post(s) Tagged: 0 Thread(s)	Just call up subaru and price out a short block from the fa20dit. The pistons are most likely different due to the different injection setup as direct injection relies on the crown shape for fuel mixing. __________________ 2013 SWP BRZ sportech. 11.11sec@129.01mph, 511whp on e70. FullBlown base kit, FullBlown built 9.5:1 engine, GTX3076R GEN2 turbo, 1700cc Bosch injectors, FullBlown flex fuel kit, FullBlown radiator and oil cooler, FullBlown custom 3" dual exit exhaust, act xtreme clutch, whiteline diff and subframe inserts, BC Racing coilovers, hotchkiss 18mm rear sway, is300 3.73 differential ... Never finished

01-10-2015, 10:42 AM	#8
rusty959 Senior Member Join Date: Jun 2012 Drives: DGM BRZ limited Location: Indiana Posts: 366 Thanks: 98 Thanked 145 Times in 95 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	If you swap out internals at all, you will be losing some of the reliability that is typically perceived in an engine built by subaru. If all you are wanting is the low end torque, just get a smaller turbo. The factory wrx turbo runs out of steam pretty quickly at high rpm's, which is the trade off for making boost so early. The fa20dit engine with a "Aftermarket turbo" will no longer have the same torque curve as the factory engine unless you get one with similar specs as the factory one.. I know you are talking about swapping out internals instead of the entire engine, but this thread may still help if you haven't seen it: http://www.ft86club.com/forums/showthread.php?t=69032 __________________

01-10-2015, 11:46 AM	#9
mwjcyber Senior Member Join Date: Jun 2013 Drives: 13' Subaru BRZ Limited SWP 6MT Location: Albuquerque, NM (5923 ft) Posts: 465 Thanks: 515 Thanked 307 Times in 170 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	http://www.ft86club.com/forums/showthread.php?t=79549 __________________ Build Thread: Breaking-Bad SWP Build OFFICIAL NM.FT86CLUB Facebook Page

01-10-2015, 11:54 AM	#10
mwjcyber Senior Member Join Date: Jun 2013 Drives: 13' Subaru BRZ Limited SWP 6MT Location: Albuquerque, NM (5923 ft) Posts: 465 Thanks: 515 Thanked 307 Times in 170 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	FA20DIT BRZ @ STOHL RACING http://www.ft86club.com/forums/showthread.php?t=79549 __________________ Build Thread: Breaking-Bad SWP Build OFFICIAL NM.FT86CLUB Facebook Page Last edited by mwjcyber; 01-10-2015 at 12:04 PM.

01-09-2015, 03:44 PM	#2
350matt Senior Member Join Date: Jul 2013 Drives: toyota mr2/ Toyota GT86 Location: UK Posts: 438 Thanks: 3 Thanked 140 Times in 92 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I'd be surprised if the piston was different, I suspect the rod is the only mechanical change, a more robust and slightly shorter part to drop the compression

01-09-2015, 06:15 PM	#3
nonicname returns Senior Member Join Date: Sep 2013 Drives: 4 wheels Location: the world Posts: 112 Thanks: 6 Thanked 15 Times in 10 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Interesting, i've never thought about that but It would make sense i guess. I cant believe this subject is nowhere to be found. I want the torque i'll never get out of the Current compression.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
BEST HID Conversion Kit out there??	VADER	Cosmetic Modification (Interior/Exterior/Lighting)	29	03-30-2017 07:50 AM
FA20T swap from the new subaru forester direct bolt in?	DriftEightSix	Engine Swaps	77	12-23-2014 07:53 PM
HID Conversion DIY	loong	DIY (Do-It-Yourself) Guides	55	06-27-2014 06:27 PM
E85 conversion	ender2664	Engine, Exhaust, Transmission	6	09-15-2013 10:58 PM
conversion fa20 head with fb25T block	ft86-UAE	Engine, Exhaust, Transmission	3	06-18-2012 10:46 AM

User Name		Remember Me?
Password