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Old 07-13-2001, 12:32 AM   #1
Paully
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Question junk yard Subaru Turbo Into my Impreza

I have found a 80s four door turbo in the Junk yard here. I am going to take a second look at it and get the year off the car. I would like to slap it on the car. How much has the motor chaged from back then to my 96 1.8 liter? It be sweet If I could grap the entire exoste system and slid it in. Dose any one here have experance with older subaru Turbos? I know there older cars never really made it in the mass market but any one that has had one seemed to love them.. Any advice would be welcome.. At 7,000+ feet above sea level my car is VARY short of breath. And I am not rolling in money eather. Thanks
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Old 07-13-2001, 01:40 AM   #2
solomrus
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paully,

i think that this is a viable option, and that it can be done with factory parts. i would see if that yard will sell you the whole engine/tranny with all the lines and everything attached. that would be the best way to make sure that you get every part that you need.

headers, cats, exhausts can all be fabricated. the only difficult parts to do are the flanges.

get a couple of manuals for these cars, the older one and your newer one, and look for differences and similarities. i think that you can make it work.

i was thinking about the same thing last spring, and got no replies at all to my inquiries. if you have the tools, the time, and some money, just about anything is possible.

good luck!

--r
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Old 07-13-2001, 07:01 AM   #3
yebokmj
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Default To small

The turbo is going to be way to small. So small infact that it would probably really hurt the performance of the car by creating alot of back pressure. I have the IHI kit using the legacy turbo from the 2.2T engine and I am told mine is to small, so I would think yours would be really to small. Also even if it didn't hurt back pressure to badly the turbo on such a large engine would loose thermal efficenty really quickly. Meaning you could run very little boost, like possibly under 5psi and then then you would still have all that back pressure. You also said your not rolling in dow I tried to do it cheaply and well it's hard so you need to plan on spending some good money no matter what on gauges and management. Last thing is that you would need a crossmember out of a WRX asuming the exhuast routing is the same as on the impreza turbo as it is on the car you found. Hope all of this helps.
Joshua
Subaru Salesman
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Old 07-13-2001, 07:16 AM   #4
blaster88
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y - he says he has a 1.8, so the turbo from a 1.8 should be a good fit.

Good question about whether it would all fit. Dunno anything about the header and uppipe on that car, and it may need a crossmember.

Take a look at the header if you can, and if goes around the front of the engine and the turbo up-pipe comes up the pass side of hte engine, you will need a Legacy turbo crossmember to swap in the stuff from the old turbo 1.8.

Then there is the question of the ECU - dunno how a 96 NA ECU would react to boost. Might be okay, but you'll probably need an electronic boost controller because they probably (again, dunno)ran a fairly high boost pressure (about 12 lbs), and without the ECU, you won't have the stock boost control solenoid working.

An interesting project.
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Old 07-13-2001, 10:29 AM   #5
yebokmj
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Default early in the morning

It was early in the morning I guess I missed the 1.8 part.
Joshua
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Old 07-13-2001, 10:48 AM   #6
Scoobyslack1
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I have an IHI RBH5 from a XT sitting in a box in my closet. I was going to use it for a turbo kit on my 1.8L, but stumbled on to an EJ22T motor. I'm running it on the 1.8L ECU/MAF, runs rich, but good.

Were looking for a turbo to add it to your engine?
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Old 07-13-2001, 04:03 PM   #7
Paully
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Well I am going to take a look at the car agian and make sure it is a 1.8. I would remove all but the muffler when it comes to the exost system. The best exsost for turbo is a strait pipe with no resistnce. Thanks for all your imput. I shall keep you updated
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Old 07-13-2001, 08:40 PM   #8
Scoobie Steve
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Default Header won't work

I have a header and three xt turbos sitting in my garage. the header wont fit the exhaust ports on the heads. Your head has 4 valves per cylinder and the ea82 just has two and the flanges are different. The turbo is small but should work well with your engine. they are waste-gated to 8 psi but will run much more with a boost controller. the xt's were around 120hp stock and i am guessing your 1.8 is around 110hp. my buddy build a xt engine and is probally pushing 170 hp on one of the turbos. I wouldn't run much of an exhaust(glass pack) because back pressure will be a problem. also i would use an intercooler because the turbo may be working past its peak effiency making the air hotter. a small saab or conquest intercooler would work fine. i planned on using these turbos for a twin turbo setup on a xt-6 but never found the time to do so. Keep us informed on your progess.
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Old 07-14-2001, 02:03 AM   #9
ImprezaRS dot com
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The 80's 4 door turbo I think is the GL-10 (loyale) and Diz was running this very same compressor at 5 psi on his MY99RS 2.5L. He went as high as 7-9 psi with water injection, since the intake charge temps were so high. The water injection helped but not enough.

While it make good power while WOT up here at 6,000 feet, drivability was poor and it was like a light switch. He disliked it enough to return the MY99 to stock sell the kit and the car, and get a WRX.

However, on the 1.8L it should be fine.

Larry
www.ImprezaRS.com
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