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Old 11-10-2008, 02:40 PM   #1
97sportwaggie
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Default ej20g questions. have 2 different blocks. what will i have to modify

hey. so if they have 3 different versions how hard is it gonna be to just take everything off my 96ej20g from a gf8 and put it on this other ej20g longblock. things i have noticed are different are individual coils arent gonna just bolt up to the valve covers. the difference is on my coils it takes only one bolt to hold it in place this new one requires 2. another thing i have noticed. Where you screw your oil filter on at there is a hose runnin from the gf8 ej20 but not from the new block i have recieved. what should i do?


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Old 11-10-2008, 02:49 PM   #2
fishheadback
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Well more than likely the "hose" near the oil filter is a factory oil cooler. You should be able to transfer that to the new motor, along with associated hardware.

And as far as the coils go. I believe the later models had 2 holes, but you dont "need" to use both to hold down the coil. As long as the one you use is in the same spot, use it.
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Old 11-10-2008, 06:10 PM   #3
97sportwaggie
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ya i dont think it will transfer over. but i heard you dont need it?
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Old 11-10-2008, 08:46 PM   #4
RallyColtTurbo
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2 bolt coils is the early Legacy EJ20G. From about '89-'93.

Single bolt coils is the Impreza EJ20G. From '93-96.

Heads are different in both valve actuation and in chamber size. Swapping just the heads will result in a different compression ratio. From what I've read flow is about the same between them.

The single bolt coils will not fit directly into the older Legacy heads, but the interferance is minor and a quick touch with a grinder will solve that problem. Use one of the smaller Legacy mounting bolts so you don't have to tap the heads out.

The two bolt coils will not directly fit on the Impreza heads because the larger bolt will not fit through the hole in the coil.
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Old 11-10-2008, 10:35 PM   #5
fishheadback
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Learned something new today.


I like his coil fitting explanation bettar
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Old 11-10-2008, 10:36 PM   #6
Matt Monson
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Why are you making this change? You are backdating to what many would consider an inferior engine. Though the new block has a small chance that it's closed deck. Otherwise the heads and cams on the replacement engine are inferior to what's currently in the car.
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Old 11-11-2008, 12:38 PM   #7
97sportwaggie
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making this change because my current block is toast. coolant flows rapidly into oil pan.
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Old 11-11-2008, 07:52 PM   #8
Matt Monson
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There's a good chance it's a simple head gasket replacement if you haven't trashed it. Rallispec sells the HG's as well as a number of Ebay vendors. You just have to be sure you get the early thick ones. And of course measure the heads for flatness.
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Old 11-21-2008, 12:07 AM   #9
97sportwaggie
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she runs!!!!!!
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