BRZ engine compression 13.5:1 or 12.5:1? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

mangler · 12-05-2021, 11:51 AM

In a sea of misinformation, it is hard to keep track. For a while subaru.com had the BRZ compression ratio at 13.5:1. Subaru Canada now says 12.5:1. AFAIK the GR86 was always stated as 12.5:1. It seems unlikely (i.e. costly) that they would make the compression different on the twins. Does anyone have the final word on this?

trippinbillies40 · 12-05-2021, 12:04 PM

https://media.subaru.com/pressreleas...l-new-2022-brz

Click on the "2022 Subaru BRZ Specifications.pdf" link on the right. It's 12.5:1.

timurrrr · 12-05-2021, 05:16 PM

13.5:1 was allegedly a typo that they didn't catch until after journalists and forums started discussing it. It's funny to see the wrong information still being spread across the internet about the CR by people who were lazy to re-check. Shame on the journalists who still do it...

12-05-2021, 11:51 AM	#1
mangler Member Join Date: Dec 2021 Drives: 2007 Saturn Vue Location: Ontario Posts: 11 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	BRZ engine compression 13.5:1 or 12.5:1? In a sea of misinformation, it is hard to keep track. For a while subaru.com had the BRZ compression ratio at 13.5:1. Subaru Canada now says 12.5:1. AFAIK the GR86 was always stated as 12.5:1. It seems unlikely (i.e. costly) that they would make the compression different on the twins. Does anyone have the final word on this?

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12-05-2021, 12:04 PM	#2
trippinbillies40 Senior Member Join Date: Mar 2013 Drives: '22 WRB Location: US Posts: 863 Thanks: 201 Thanked 1,227 Times in 405 Posts Mentioned: 37 Post(s) Tagged: 0 Thread(s)	https://media.subaru.com/pressreleas...l-new-2022-brz Click on the "2022 Subaru BRZ Specifications.pdf" link on the right. It's 12.5:1.

12-05-2021, 05:16 PM	#3
timurrrr Senior Member Join Date: May 2019 Drives: 2022 GR86 Location: Between Sonoma and Laguna Seca Posts: 1,726 Thanks: 2,145 Thanked 1,323 Times in 727 Posts Mentioned: 31 Post(s) Tagged: 1 Thread(s)	13.5:1 was allegedly a typo that they didn't catch until after journalists and forums started discussing it. It's funny to see the wrong information still being spread across the internet about the CR by people who were lazy to re-check. Shame on the journalists who still do it...

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