EJ Engine Differences
04-09-2004, 12:18 AM
#1
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Join Date: Apr 2004
Location: Cape Coral, FL
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Car Info: 1993 Impreza L EJ20 Turbo FWD
EJ Engine Differences
So what is the difference between the 2.0 litre and 1.8?
Do the internals of the 2.0 fit in the 1.8?
Cause if they do I plan on putting forged internals in my 1.8.
If they dont, where can you find some internals for the 1.8?
and where can you find good rebuild kits for 1.8 engines?
I looked around but im no good at the internet and couldnt find anything.
why im asking
im looking to rebuild my motor and run way more boost if my current problem cant be fixed easily and quickly. thanks for any info you can offer.
Do the internals of the 2.0 fit in the 1.8?
Cause if they do I plan on putting forged internals in my 1.8.
If they dont, where can you find some internals for the 1.8?
and where can you find good rebuild kits for 1.8 engines?
I looked around but im no good at the internet and couldnt find anything.
why im asking
im looking to rebuild my motor and run way more boost if my current problem cant be fixed easily and quickly. thanks for any info you can offer.
Last edited by xitonedefix; 04-09-2004 at 12:36 AM.
04-09-2004, 02:01 AM
#3
uf, 14.5 psi on an open deck engine w/o forged internals...
just out of curiousity, though, I was under the impression that open deck engines couldn't run that much boost, regardless of having forged internals or not. Am I wrong?
just out of curiousity, though, I was under the impression that open deck engines couldn't run that much boost, regardless of having forged internals or not. Am I wrong?
04-09-2004, 11:55 AM
#5
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Originally posted by xitonedefix
I only ran 8psi and put 150hp to the wheels on the dyno, till I got a 4bar Fuel Pressure Regulator off a Dodge Turbo, Then I ran 14.5psi for about a week and it ran great. Then that friday night I was runnin on the highway with a mustang 5.0, turbo 240, and GST, and was behind them but i was gaining on all of them.
We all pulled off the highway and I looked back and noticed smoke coming out of my car. Pulled over and looked under the hood and oil was EVERYWHERE. I drove it home and it felt like it dropped a cylinder. I thought it might be a head gasket so I got it home and spent the last week installing new head gaskets. When I pulled the heads the cylinder closest to the driver had like a teaspoon of oil in it.
I just got finished and tried to start it up and it wont turn over, it feels like its drowned in somthing and smoke is billowing out of the exhaust. I looked under the engine and brown fluid is coming out of the what looks to be the brand new head gasket, under the cylinder thats closest to the driver that had the oil in it. The liquid doesnt look like oil or coolant and doesnt smell or feel like either but it does smell burnt.
I only ran 8psi and put 150hp to the wheels on the dyno, till I got a 4bar Fuel Pressure Regulator off a Dodge Turbo, Then I ran 14.5psi for about a week and it ran great. Then that friday night I was runnin on the highway with a mustang 5.0, turbo 240, and GST, and was behind them but i was gaining on all of them.
We all pulled off the highway and I looked back and noticed smoke coming out of my car. Pulled over and looked under the hood and oil was EVERYWHERE. I drove it home and it felt like it dropped a cylinder. I thought it might be a head gasket so I got it home and spent the last week installing new head gaskets. When I pulled the heads the cylinder closest to the driver had like a teaspoon of oil in it.
I just got finished and tried to start it up and it wont turn over, it feels like its drowned in somthing and smoke is billowing out of the exhaust. I looked under the engine and brown fluid is coming out of the what looks to be the brand new head gasket, under the cylinder thats closest to the driver that had the oil in it. The liquid doesnt look like oil or coolant and doesnt smell or feel like either but it does smell burnt.
Originally posted by xitonedefix
apparently you were wrong
apparently you were wrong
04-29-2004, 01:48 PM
#7
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Join Date: Feb 2003
Location: Glen Rock, PA
Posts: 527
Car Info: 95 Impreza coup, green, 5speed 1.8l awd
the funny thing is that they will fit if you bore the cylinder out to that size because it is a 2.0L block the cylinder walls are 9mms thick
but if you get a stroker kit get it for the old 2.0 before it was changed in 97 i think otherwise the thrust bearing in the back wont fit
can u weld? or braze? if you can put 4 aluminum tabs and make it semi-closed deck
but if you get a stroker kit get it for the old 2.0 before it was changed in 97 i think otherwise the thrust bearing in the back wont fit
can u weld? or braze? if you can put 4 aluminum tabs and make it semi-closed deck
05-03-2004, 08:04 PM
#8
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Join Date: May 2004
Location: Williamstown, MA
Posts: 19
Car Info: 1998 Legacy GT Turbo
You should never say things like "There's no way that engine can handle this much boost," because there is always someone who is running it and is doing fine with it.
People say those kind of things about my engine, the EJ251. They say the headgaskets are weak and the engine can't handle X amount of boost, and that the pistons will go.
But I am seeing more and more people running more and more boost. People are running 12 psi on the phase I EJ25 engine with stock internals without problems now.
Yes, closed deck is more durable. Certain pistons and rods are more durable than others. Of course. But the big thing here is tuning. It's about spark, fuel, air, temperature, and timing. You get those right and you'll get a lot more out of your engine than a lot of other people.
I think that you could run a decent level of boost on that thing without it blowing up. Make sure you have a handle on those elements first though.
I'm not a betting man, but I'd say that you could get 10+ psi on that thing reliably with the right tuning. That's on stock internals.
People say those kind of things about my engine, the EJ251. They say the headgaskets are weak and the engine can't handle X amount of boost, and that the pistons will go.
But I am seeing more and more people running more and more boost. People are running 12 psi on the phase I EJ25 engine with stock internals without problems now.
Yes, closed deck is more durable. Certain pistons and rods are more durable than others. Of course. But the big thing here is tuning. It's about spark, fuel, air, temperature, and timing. You get those right and you'll get a lot more out of your engine than a lot of other people.
I think that you could run a decent level of boost on that thing without it blowing up. Make sure you have a handle on those elements first though.
I'm not a betting man, but I'd say that you could get 10+ psi on that thing reliably with the right tuning. That's on stock internals.
05-03-2004, 08:18 PM
#9
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Join Date: May 2004
Location: Williamstown, MA
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Car Info: 1998 Legacy GT Turbo
Also, for more information on turboing a 1.8L, check out Unique Motorsports.
http://www.uniquemotorsports.com
http://www.uniquemotorsports.com
05-04-2004, 01:41 PM
#10
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Location: Glen Rock, PA
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Car Info: 95 Impreza coup, green, 5speed 1.8l awd
it IS all in the tune and fuel
sounds like he got high EGTs and burnt his rings which would not have happened with the use of water injection or higher octane fuel
there is a person on this board that is runing 11 psi without a intercooler and runing 12s i think out of a stock NA2.5
sounds like he got high EGTs and burnt his rings which would not have happened with the use of water injection or higher octane fuel
there is a person on this board that is runing 11 psi without a intercooler and runing 12s i think out of a stock NA2.5
05-04-2004, 06:23 PM
#11
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Car Info: 1995 Subaru Impreza 1.8 L
Theres another guy on NASIOC who ran 14psi on an EJ18, but he also had timing control and a fuel pressure regulator.
Anyway, the only real difference between the EJ18 and EJ20 internals in terms of the block are the pistons. The piston arms and cranks are compatible. The heads are totally different though.
Anyway, the only real difference between the EJ18 and EJ20 internals in terms of the block are the pistons. The piston arms and cranks are compatible. The heads are totally different though.
05-04-2004, 08:53 PM
#12
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Location: Cape Coral, FL
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Car Info: 1993 Impreza L EJ20 Turbo FWD
further investigation revealed that I detonated the piston, it melted a little corner off the side. the block and heads handled it just fine, it was just the piston that was too weak to handle that much heat. so im gonna build a 2.2 with my 1.8 heads, for cheap and run really low boost untill i buy the internals for the 2.2
05-05-2004, 09:34 AM
#14
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Car Info: 1993 Impreza L EJ20 Turbo FWD
not really, they are the worst part on the 2.2, the heads on the 2.2 only have 1 exhaust port, but not the 1.8, they have 2 just like the EJ20 or EJ25 heads
05-05-2004, 01:22 PM
#15
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They are nothing like the EJ20 or EJ25 heads: http://community.webshots.com/album/110209915vXVzdU
Dinky intake manifold inlets, tiny valves, hydrolic lifters...
And the EJ22 heads with the single ports are made from like 98-01, with better valve design than the 93-97 EJ22 heads which are basically identicle to the EJ18s including the dual exhaust ports.
Dinky intake manifold inlets, tiny valves, hydrolic lifters...
And the EJ22 heads with the single ports are made from like 98-01, with better valve design than the 93-97 EJ22 heads which are basically identicle to the EJ18s including the dual exhaust ports.
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