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Old 09-07-2012, 12:17 PM   #1
bugeye1990
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Default ej20D heads

Idk if this is technically the right forum for this
but i was wondering how much of a difference there is in port size from a 2002 forester ej20d cylinder head campared to my wrx head. Obviously the cams would be different but would i be able to change these to aftermarket cams for a wrx or would i need to line hone where the cam seats to make them fit. Ive seen the 400$ machine service to give 2.0 heads the combustion chamber of 2.5 would i be able to do that too?
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Old 09-07-2012, 12:56 PM   #2
Matt Monson
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wat??
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Old 09-07-2012, 01:47 PM   #3
bugeye1990
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Lol how can i explain this better...i have a 2002 wrx Ej20. Would i be able to modify dohc cylinder heads from a n/a 2.0 2002 forester. As in could i buy aftermarket cams for a wrx cylinder head and put them in the forester head.
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Old 09-07-2012, 05:05 PM   #4
Matt Monson
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OK, that makes more sense. Ej20D is a designation that stopped being used some time in the early-mid 90s. Everything changed to numbers instead of letters in 1999.

DOHC NA heads from 2002 are very likely on the exact same castings as your Ej205 heads in your WRX currently. In fact, I would guess that the only differences between the two is that the Forester heads have NA cams in them and don't have the coolant and oiling fixtures for the turbo tapped and fitted. And obviously, a 2.0 DOHC Forester was never sold in the States so make sure whomever is doing this deal with you is accurate in what JDM/World Market engine components they are supplying to you.
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Old 09-07-2012, 10:23 PM   #5
bugeye1990
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O wait my bad it was an outback not forester lol. but im guessing what u prrviously stated would be the same? Would it be difficult to tap/fit them for that? I look on craigslist and ebay every other day and most of the time heads for wrx or sti are outrageous. Mostly sold seperately not in pairs on ebay. And for like 500$ a peice. But i noticed most normal ej n/a dohc heads sell for much less and actually as a pair. The outback heads im watching are 250 for the pair. The plan was to just buy aftermarket wrx cams and have the combustion chamber machined to match that of 2.5. If the ports were pretty close in size and shape that is. It would be a hell of alot cheaper than spending 1000 dollars on a set of heads and then buying cams valves springs for a rebuild
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Old 09-08-2012, 11:38 PM   #6
Patrick Olsen
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An EJ20 from an Outback? Are you sure they're not EJ25D heads?
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Old 09-09-2012, 05:01 AM   #7
bugeye1990
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Well unless they posted the wrong name for the item. It says ej20D
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Old 09-09-2012, 03:24 PM   #8
Patrick Olsen
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It wouldn't be the first time someone advertised a part online with incorrect information. Without knowing who "they" are or where the heads are advertised it's hard to say for certain.
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