Brz ls or 2jz - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

SlowKroko · 03-29-2018, 05:33 AM

Hi everyone
I am planning to swap a 2015 brz but I am not really sure of which swap should I do. Do u have swap ideas ? I think about a ls3 or a 2jz. What do you think about these engines ?
Thank you

SlowKroko · 03-29-2018, 05:39 AM

I thought about the fuel consumption of a ls3 and I think the fuel tank is too small. The fuel consumption will be 19l/100km so I will only have 300km autonomy.

Summerwolf · 03-29-2018, 06:35 AM

Ls3 absolutely. Unless you HAVE to go with a Toyota motor the Ls swap is already well documented and reliable.

SlowKroko · 03-29-2018, 07:06 AM

Thank you for ur reply
I just think the 50l tank is a bit small for a big engine like this. Do you think it is possible to upgrade it and add something like 10 or 20 liters?

Summerwolf · 03-29-2018, 07:09 AM

If its between those two motors, a 2jz should get even less mpg.

When doing an engine swap like this fuel consumption is generally not a main concern. Is there a specific reason you're swapping?

PuslarBrrrz · 03-29-2018, 12:41 PM

Fuel tank sizing will be the least of your worries with the swap honestly. lol

wutsaiu · 03-29-2018, 03:27 PM

Quote:

Originally Posted by SlowKroko

I thought about the fuel consumption of a ls3 and I think the fuel tank is too small. The fuel consumption will be 19l/100km so I will only have 300km autonomy.

19L/100km????

2011 Camaro gets 14.7 city and 9.8 hwy.
FYI, the Supra 3.0L 2JZ gets worse economy.
Even 2018 STI gets worse hwy economy than LS3.

ZDan · 03-29-2018, 03:40 PM

I got 27mpg highway (8.7L/100km) with 6.0 LS2 in my FD RX-7 w/ 0.5:1 6th gear and 3:55 diff. With the 6.8 LS3 in it now and 0.64:1 6th gear I get 24mpg highway (9.8L/100km).
In town it does suck though, more like 14mpg (16.8 L/100km).

No reason a 2JZ should get better fuel mileage, an LS3 Corvette gets slightly better city and significantly better highway mileage vs. a 2JZ Supra...

SlowKroko · 03-30-2018, 08:43 AM

Ok thank you so I think I will go for a ls3.
No I don't have a specific reason, the FA20 has a bit lot of kms so when it break I will swap.

Chris1083 · 03-30-2018, 08:40 PM

Buy another one and do both swaps.

x808drifter · 03-30-2018, 09:26 PM

Beams 3SGE

03-29-2018, 07:09 AM	#5
Summerwolf Panda Trueno Join Date: Jan 2015 Drives: No twin now. Location: North Indiana Posts: 3,347 Thanks: 2,113 Thanked 2,407 Times in 1,332 Posts Mentioned: 17 Post(s) Tagged: 2 Thread(s)	If its between those two motors, a 2jz should get even less mpg. When doing an engine swap like this fuel consumption is generally not a main concern. Is there a specific reason you're swapping? Last edited by Summerwolf; 03-29-2018 at 07:46 AM.

03-29-2018, 06:35 AM	#3
Summerwolf Panda Trueno Join Date: Jan 2015 Drives: No twin now. Location: North Indiana Posts: 3,347 Thanks: 2,113 Thanked 2,407 Times in 1,332 Posts Mentioned: 17 Post(s) Tagged: 2 Thread(s)	Ls3 absolutely. Unless you HAVE to go with a Toyota motor the Ls swap is already well documented and reliable.

03-29-2018, 12:41 PM	#6
PuslarBrrrz Senior Member Join Date: Jun 2017 Drives: 2013 BRZ Location: Dayton, OH Posts: 103 Thanks: 37 Thanked 61 Times in 33 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Fuel tank sizing will be the least of your worries with the swap honestly. lol

03-29-2018, 03:40 PM	#8
ZDan Senior Member Join Date: May 2011 Drives: '23 BRZ Location: Providence, RI Posts: 4,584 Thanks: 1,377 Thanked 3,891 Times in 2,032 Posts Mentioned: 85 Post(s) Tagged: 0 Thread(s)	I got 27mpg highway (8.7L/100km) with 6.0 LS2 in my FD RX-7 w/ 0.5:1 6th gear and 3:55 diff. With the 6.8 LS3 in it now and 0.64:1 6th gear I get 24mpg highway (9.8L/100km). In town it does suck though, more like 14mpg (16.8 L/100km). No reason a 2JZ should get better fuel mileage, an LS3 Corvette gets slightly better city and significantly better highway mileage vs. a 2JZ Supra...

03-30-2018, 08:40 PM	#10
Chris1083 Member Join Date: Feb 2017 Drives: None Location: Rochester Posts: 29 Thanks: 0 Thanked 8 Times in 6 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Buy another one and do both swaps.

03-30-2018, 09:26 PM	#11
x808drifter LMGTFY Join Date: Mar 2016 Drives: 13 FRS, 91 Miata Location: Lava Town, HI Posts: 2,776 Thanks: 5,561 Thanked 3,646 Times in 1,625 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	Beams 3SGE

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