New to subaru engines

Subysander · 11-05-2021, 11:40 PM

I recently received a free subaru wagon that it trash ,but tranny and motor are fine.Tranny is still in car and will be removed and motor ran but is torn down.I want to rebuild motor and use it as a sand rail motor.It is a 1992 ea82t.Not too familiar with these motors and would like some input on a few things.I like having turbo but am deciding whether to simplify it by going carb?Can it be done? Is the ea82t block the same as non turbo?Are ea82 parts the same in both turbo and non turbo?

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R P · 11-06-2021, 11:07 AM

There are quite a few Subaru aircraft conversion companies. Here is one. They would have a lot of knowledge and experience with these engines.
http://www.sdsefi.com/subaru.htm

R P · 11-06-2021, 11:08 AM

There are quite a few Subaru aircraft conversion companies. Here is one. They would have a lot of knowledge and experience with these engines.
http://www.sdsefi.com/subaru.htm

Jack · 11-06-2021, 11:48 AM

Compression ratio is the big difference between NA and turbo engines that often ends in catastrophe. Back before the WRX even came to the US, I was involved with Subaru people and every single turbo addition resulted in a blown engine. It's as easy to do today. If you want to go turbo, you'll need to replace the pistons to reduce compression. The easier way out was to do a supercharger and limit boost to about 5 psi.

Subysander · 11-06-2021, 02:30 PM

The engine I have is already a turbo and was thinking about converting to carburetor.What parts are needed to convert?

Subysander · 11-08-2021, 02:36 PM

Will the block ,since it is an ea82t be ok to put non turbo parts in it to be a non turbo motor?

monkeyposeur · 11-10-2021, 09:52 PM

The crank, rods, and block are the same between the ea82 and ea82t iirc. The turbo heads are dual port and the NA heads are single. A lot of parts are going to be able to be bolted on but getting them to run properly is another story.

How are you going to run the engine? With the stock wiring or a standalone ECU? If you are using the stock ECU to run a formerly turbo ea82t as an NA application it's not going to work very well if at all.

So it kind of depends on what non turbo parts you want to bolt on and how much you're willing to go through to get it to work. Once you start building strange hybrid NA/turbo/carbed engines things are gonna get a lot more complex. Simplest way to use what you have is to keep it as it is and use the stock wiring and ecu.

There were ea82s that were carbed. You can find more info on ultimatesubaru.org if you search around.

11-05-2021, 11:40 PM	#1
Subysander Scooby Newbie Member#: 527329 Join Date: Nov 2021 Location: Alaska	New to subaru engines I recently received a free subaru wagon that it trash ,but tranny and motor are fine.Tranny is still in car and will be removed and motor ran but is torn down.I want to rebuild motor and use it as a sand rail motor.It is a 1992 ea82t.Not too familiar with these motors and would like some input on a few things.I like having turbo but am deciding whether to simplify it by going carb?Can it be done? Is the ea82t block the same as non turbo?Are ea82 parts the same in both turbo and non turbo? * Registered users of the site do not see these ads.

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11-06-2021, 11:07 AM	#2
R P Scooby Newbie Member#: 468304 Join Date: May 2017	There are quite a few Subaru aircraft conversion companies. Here is one. They would have a lot of knowledge and experience with these engines. http://www.sdsefi.com/subaru.htm

11-06-2021, 11:08 AM	#3
R P Scooby Newbie Member#: 468304 Join Date: May 2017	There are quite a few Subaru aircraft conversion companies. Here is one. They would have a lot of knowledge and experience with these engines. http://www.sdsefi.com/subaru.htm

11-06-2021, 11:48 AM	#4
Jack Add Lightness Moderator Member#: 13699 Join Date: Dec 2001 Chapter/Region: NESIC Location: Hopkinton, MA Vehicle: 2021 Building It Better	Compression ratio is the big difference between NA and turbo engines that often ends in catastrophe. Back before the WRX even came to the US, I was involved with Subaru people and every single turbo addition resulted in a blown engine. It's as easy to do today. If you want to go turbo, you'll need to replace the pistons to reduce compression. The easier way out was to do a supercharger and limit boost to about 5 psi.

11-06-2021, 02:30 PM	#5
Subysander Scooby Newbie Member#: 527329 Join Date: Nov 2021 Location: Alaska	The engine I have is already a turbo and was thinking about converting to carburetor.What parts are needed to convert?

11-08-2021, 02:36 PM	#6
Subysander Scooby Newbie Member#: 527329 Join Date: Nov 2021 Location: Alaska	Will the block ,since it is an ea82t be ok to put non turbo parts in it to be a non turbo motor?

11-10-2021, 09:52 PM	#7
monkeyposeur Scooby Specialist Member#: 333468 Join Date: Sep 2012 Chapter/Region: RMIC Location: SLC, UT Vehicle: 93 SS - 06 OB XT 03 WRB GD 205/22T 20G-XT	The crank, rods, and block are the same between the ea82 and ea82t iirc. The turbo heads are dual port and the NA heads are single. A lot of parts are going to be able to be bolted on but getting them to run properly is another story. How are you going to run the engine? With the stock wiring or a standalone ECU? If you are using the stock ECU to run a formerly turbo ea82t as an NA application it's not going to work very well if at all. So it kind of depends on what non turbo parts you want to bolt on and how much you're willing to go through to get it to work. Once you start building strange hybrid NA/turbo/carbed engines things are gonna get a lot more complex. Simplest way to use what you have is to keep it as it is and use the stock wiring and ecu. There were ea82s that were carbed. You can find more info on ultimatesubaru.org if you search around.