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Old 11-03-2001, 06:02 AM   #1
akcel
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Default will the mrt turbo headers fit on my01 rs?

they are built for an ej20 motor i suppose....just curious if they would bolt right up to my ej25......i already did a search and no luck....so dont tell me to do a search

-akcel

ps heres a pic of the headers
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Old 11-03-2001, 06:07 AM   #2
bsquare
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You'll need a new crossmember for them to clear. Your cheapest option is a Legacy Turbo crossmember, then it should bolt right on.


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Old 11-03-2001, 11:12 AM   #3
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You'll also need to change the water pump. The thermostat on the RS hangs down too low to clear the turbo headers.
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Old 11-03-2001, 03:03 PM   #4
akcel
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thanks....where would i go to get those?? subaruparts.com?

-akcel
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Old 11-03-2001, 04:05 PM   #5
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Yeah, I'm sure you could get a water pump for a turbo Legacy from subaruparts. Just beware that you should know what you're doing if you try to install the water pump yourself...it requires removing the timing belt/chain (whatever the Impreza has).
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Old 11-03-2001, 04:33 PM   #6
akcel
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know of anyone who has done this??? and you said the cheapest way was to get a legacy crossmember....what would be the more expensive?? wrx?.....would it outperform the legacy?

-akcel
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Old 11-03-2001, 05:07 PM   #7
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adamsrs has a Legacy crossmember (as well as most of the Legacy turbo gear) in his Impreza.

Outperform a Legacy? Are you confused about what a crossmember is? Performance will depend on the turbo you run, how much boost, state of tune, etc., but not the crossmember, which is just a big hunk of metal to which the engine and suspension bolt.


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Old 11-03-2001, 05:18 PM   #8
akcel
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Quote:
Originally posted by bsquare

Outperform a Legacy? Are you confused about what a crossmember is? Performance will depend on the turbo you run, how much boost, state of tune, etc., but not the crossmember, which is just a big hunk of metal to which the engine and suspension bolt.


Ben [/b]
gotcha....but he said "the cheaper way to go would be a legacy cross member" usually cheaper is ok....if u are being cheap about your setup or what not......just curious as to the other uncheap option. not saying that a legacy is cheap just saying what he said...lol something.......any hoot

-akcel
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Old 11-03-2001, 07:31 PM   #9
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legacy would work find and be cheep. better would be getting one made which would be very expensive. do keep in mind doing this would be very hard and not something that can be done in your garage. unless u have an engine life and air wrench
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Old 11-03-2001, 10:17 PM   #10
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blaster88 also has it done. That's how I know how much of a pain in the ass it is. You can do it without an engine lift, and without a garage either. PM blaster88 if you're really interested.
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Old 11-03-2001, 11:21 PM   #11
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You might also have problems with the upipe part of the header clearing the EJ25 block. There is different clearance on an EJ20.
Also you can go to http://www.nothingserious.net to find out more about the Legacy turbo setup. I am in the process of doing a Legacy turbo setup and am almost done.

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Old 11-04-2001, 04:19 AM   #12
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The Legacy part is cheaper than getting a WRX crossmember. Having a custom one made seems excessive. The crossmember is not exactly a high-performance part, it just sits there so other parts have a place to attach.

Could someone who has actually done this comment on the up-pipe clearance? I haven't heard of this problem before, and Cobb Tuning dropped an EJ25 block into a WRX, never mentioning piping clearance problems.


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Old 11-04-2001, 04:41 AM   #13
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From Blaster88s site:

Spacer between the header and up-pipe (does not clear SOHC head otherwise)


So, you don't actually need to a modified up-pipe, just a spacer (dimensions of the spacer and info on hos the spacer relocated the turbo attach point would be useful).

[edit: spacer thickness is .75"...but why is a custom downpipe needed?]


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Old 11-04-2001, 05:05 AM   #14
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Yes, you just have to put a spacer there, but I am going to have one made because mine was broken. Also I was saying how those MRT headers were all one piece so the uppipe would be connected with no room to put a spacer.
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Old 11-04-2001, 05:17 AM   #15
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Unless you have DOHC heads...finally, an advantage for the MY98 RS owners


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Old 11-04-2001, 05:28 AM   #16
akcel
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Quote:
Originally posted by scootr
Yes, you just have to put a spacer there, but I am going to have one made because mine was broken. Also I was saying how those MRT headers were all one piece so the uppipe would be connected with no room to put a spacer.
so umm...for the my01's those headers wouldnt work out all that well since lack of spacer for the uppipe?

-akcel
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Old 11-04-2001, 08:57 AM   #17
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Actually, Imprezer is the guy to ask on this - the geometry on this header is somewhat different than on the stock turbo header and up-pipe combo. He had this header on his GC8 which was, IIRC, a 99, which was a SOHC engine. Since this is one piece, there is no way to put a spacer between header and up-pipe. Also, it may not require the waterpump change the same way the stock one does. Alex didn't mention it, but I do recal he said he had to take a dremel tool to his head to grind off some interference.

You would have to get the Legacy turbo x-member, you'll have to hunt one down somewhere on here (I think shtboxracing on the club has one, too.) They are EXTREMELY hard to find right now. There were only 700 turbo Legacies in the US, a fair number of those are on the road, the wrecked ones are likely to break hte front end, including x-member. Try www.copartfinder.com (use requires registration now) and look for 91-94 Legacies.
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