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Old 02-21-2001, 01:44 PM   #1
Spectre23
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Question Legacy Turbo engine in 2.5 RS

What should be done to a Legacy 2.2 turbo engine before it gets stuck in my RS? It has around 100K miles on it. I would like to get it to around 300 HP eventually. Who makes the best pistons/rings for it? Also, is there anything special that needs to be done to the ECU from an auto to get it to run in a 5 speed? Seriously looking into this swap since my engine may be toast. Any other advice with the swap would be appreciated.
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Old 02-21-2001, 01:55 PM   #2
stimpy
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Contact www.b-specusa.com or www.get-primitive.com regarding legacy build-ups. I think both of them are running with 2.2 turbo blocks. As for the ECU, you might want to try and round up a legacy sports sedan ECU. They come with the MT.

This is no good, I won't be the only legacy turbo'd 2.5RS out here; though I will still have my EJ25 block in my car.
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Old 02-21-2001, 01:58 PM   #3
DigDug
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Question

Are you talking about the twin-turbo Japan-spec Legacy motor? If so, you are going to end up buying so many parts to fit it into your RS, you will probably end up spending more on all the other stuff than you would on the motor. You will need the Japan-spec ECU, or else some sort of standalone ECU. Then mounts, front crossmember, exhaust manifold (and then associated piping from there back, which will all have to be custom), and those are just the "big" pieces!

Plus, that's a lot of miles! I am sure you can find one (talk to MRT or Rallispec) with a LOT less miles on it for a reasonable price, assuming that a reasonable price for you includes all of the stuff I mentioned above!

Worry about internals after you have obtained all of the external stuff you are going to need just to get the thing to run!

[This message has been edited by DigDug (edited February 21, 2001).]
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Old 02-21-2001, 02:00 PM   #4
stimpy
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This is the EJ22 legacy turbo motor coming from a US Spec '93 legacy touring wagon (single IHI RHB52 turbo).

[This message has been edited by stimpy (edited February 21, 2001).]
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Old 02-21-2001, 02:36 PM   #5
Spectre23
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The VIN decoder thing said it is a 5 speed and it is what they called a Sports Wagon. But pics of the interior looked like an auto.
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Old 02-21-2001, 02:49 PM   #6
Tim Prudence
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US spec legacy turbo engines make 160 hp with 7psi, the EJ25 makes 165 hp with 0 psi. 'nuff said
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Old 02-21-2001, 02:57 PM   #7
DigDug
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Cool

I agree. You can make significantly more power out of your stock EJ25 with the same amount of money as doing a swap like that. It just doesn't buy you enough for the cost.

Just curious, why is it that your engine "might be toast"?
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Old 02-21-2001, 03:36 PM   #8
ColinL
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re: toast

You can search for the General Forum thread, but it has something to do with his dealer screwing up a timing belt replacement.
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Old 02-21-2001, 03:52 PM   #9
Jessie James
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I know a local (Sacramento) shop that has used 2.5 (MY00) engines for around $1500. Let me know if you want their info. They probably will ship it for you, or I'd be happy to help.

Mac
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Old 02-21-2001, 05:53 PM   #10
Andre Vandenberg
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The lack of HP is in the head design. If you are going to rebuild this motor anyway, throw the heads away and replace them with your RS heads. Get the fuel and engine management to be adequate, and get ready to spend some cash for a tranny, coz at 300 hp you WILL toast it, I did...

As for you guys using the "2.2 made 160 hp with 7 lbs, RS has 165 NA" excuse for NOT doing this CHEAP UPgrade.... Keep drowning in your ignorance coz you have to do VERY little to make THAT 160hp 230+ I went from 98hp at the wheels RS to 189hp at the wheels 2.2 turbo @ 7lbs ONLY thing I did different..... I took the extra time to put my RS heads on the 2.2 shortblock
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Old 02-21-2001, 06:07 PM   #11
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Hey Andre...

I'm currently in the process of doing the same thing... did you run into any problems with the heads bolting up to the block and the transmission bolting up to the block...

I know the tranny has 6 bolts and the EJ22T has only 4...

And for the heads what gaskets did you use to bolt the 2.5 heads to the block.. I was advised to do the legacy gaskets...
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Old 02-21-2001, 06:20 PM   #12
Andre Vandenberg
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Check your PM HOK
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Old 02-22-2001, 07:49 AM   #13
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This sounds like it will be more than a weekend job for ARG! to do.

I try to get away from you guys by turboing my car. You go and have the dealer(Mark Miller in Salt Lake ) do sub-standard work and mess up your engine so you can get a turbo motor.

ARG!!!

[This message has been edited by Scoobyslack1 (edited February 22, 2001).]
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Old 02-22-2001, 08:20 AM   #14
Spectre23
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Thumbs up

It's going to be the ARG! assult on SM.

ARG!
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Old 02-22-2001, 09:06 AM   #15
Jessie James
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Andre,

We'd all love to see the info on that (me especially as I am planning on the same thing) so could you post some details?

Or Hok, could you? I would be thankful! If either of you have details on a web site somewhere point me there. Or, if you are looking for web space, let me know. I'm running my own servers. Small ones, but they work.

[Edit: Spelling]

[This message has been edited by RS25.com (edited February 22, 2001).]
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Old 02-22-2001, 10:35 AM   #16
ColinL
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Only small problem with this plan for Spectre is that if his timing belt failed, his 2.5L DOHC heads may not be ready to bolt right onto a Legacy turbo shortblock.
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Old 02-22-2001, 11:55 AM   #17
Spectre23
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Not sure what is wrong with the engine yet. It was overheating problems from the dealer breaking my timing belt tensioner. Still overheating after everything was fixed (actually, haven't overheated for a week now). Dealer did some test and said there is something like 176 ppm CO in my cooling system. Which they say could be from a cracked head, bad head gasket, or a cracked block. Hopefully getting the engine pulled out and ripped apart next week. Then I will know for sure what is wrong.

Is it the DOHC or SOHC heads that are the ones to use on the 2.2 turbo block?
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Old 02-22-2001, 11:59 AM   #18
ColinL
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2.5L DOHC heads lower the compression (from an already low 8.0:1). Run boost, and whole bunches of it.

2.5L SOHC heads raise the compression.
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