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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 07-01-2020, 07:04 PM   #1
DiscoQuinn
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Question Simplifying the differences in engines

Hi! I'm new to the forums. This is my first post.

I was donated a 2017 BRZ with a rod through the block.

I'm looking to replace the motor with a stock motor, but like everyone else, looking for the lowest cost at the highest reward.

I don't know about about the FRS/BRZ/86 chassis, but I've spent a lot of time teaching racing in them, and really enjoy them. So I'm hoping to get this one back to stock.

My questions are:

1. What are the differences in engines between the FRS - BRZ - 86?

2. Do things change on the motors from 2012 to 2020? (read: Should I be looking for the same year and model of motor for my BRZ?)

When I accepted the donation my approximation for a used motor cost was well below what I they actually sell for used. It's more expensive then I'd assumed. It's still a great deal for me, and helping teach performance driving, but I need to find the right route for my project to be fruitful.

Perhaps there is some search terms I should be using, or posts I might've missed combing the forums.

Thanks for your time!

~Q
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Old 07-01-2020, 08:28 PM   #2
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I believe all 2017+ are compatible with each other, or at least eBay and other parts websites suggest so. I think there were sensor changes 2013-2016 that make the earlier engines not directly compatible. If your components other than the window in the block are complete, you could purchase the engine I linked below and use your existing engine's components to make it whole (double check for yourself and/or your engine builder/shop). If you do not have the practical experience or wrench time to be removing the engine and swapping over the components yourself, I would highly advise a direct longblock replacement instead.

https://www.ebay.com/itm/2017-2018-2...8AAOSwuxZeolGD
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Old 07-01-2020, 10:13 PM   #3
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Quote:
Originally Posted by DiscoQuinn View Post
1. What are the differences in engines between the FRS - BRZ - 86?
nothing. it's all just a name.

Quote:
Originally Posted by DiscoQuinn View Post
2. Do things change on the motors from 2012 to 2020? (read: Should I be looking for the same year and model of motor for my BRZ?)
there was a major engine update in 2016. anything '16-20 will be a direct swap. '13-15 is going to be more difficult due to the changes made, but i believe there are a few documented swaps between the years that took a lot of extra work.
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Old 07-02-2020, 07:44 AM   #4
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Quote:
Originally Posted by soundman98 View Post
nothing. it's all just a name.



there was a major engine update in 2016. anything '16-20 will be a direct swap. '13-15 is going to be more difficult due to the changes made, but i believe there are a few documented swaps between the years that took a lot of extra work.
Just to make a correction, I believe the engine update came in 2017, not 2016. Just using a random link, but they're all the same.

https://www.autoblog.com/2016/05/27/...ssion%20models.
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Old 07-02-2020, 07:47 AM   #5
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There are minor updates 13-15. Changes in the rocker pivots and rockers, I think the valve stem length was changed in 15'. 15's and up also have a different engine harness and coil packs to combat failures in the early model.

There are more changes, just can't think of them off the top of my head.
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Old 07-02-2020, 09:15 AM   #6
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Unfortunately I can’t find it, but there is a pdf from Subaru that outlines in detail every change for the 2017 update. I had it once but can’t find it. Someone more savvy then me might be able to find it and post. It is likely already in a thread somewhere.
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Old 07-02-2020, 09:37 AM   #7
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Here is the file ...
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File Type: pdf 17MY_BRZ_1.pdf (7.80 MB, 140 views)
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Old 07-05-2020, 07:06 PM   #8
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this is the perfect opportunity to swap in an EJ207

8200rpm bone stock, turbocharged and easily tunable.
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Old 07-07-2020, 09:20 PM   #9
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this is the perfect opportunity to swap in an EJ207

8200rpm bone stock, turbocharged and easily tunable.
Lol Yeah the cost to reward ratio would be horrible.
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Old 08-18-2021, 09:38 PM   #10
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really? people are putting LS engines in, K24s, etc. This would probably bolt up. Wiring would be minimal. We already do turbo plumbing on these so no difference.

The cost of a supercharger kit is like $4000 USD, plus a few other items. A good older JDM EJ207 is a couple grand, and then some plumbing. Probably do it cheaper than a SC kit. And at the end of the day you have a STi engine, built for big boost and 8k+ rpm
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