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Old 06-06-2002, 11:05 PM   #1
mcu81
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Default 95 1.8 hp 110 tq 110 97 1.8 115 hp 120 tq????

anyone know why the 95 L 1.8 engine had 110 hp and torque and the 97 1.8 got 115 hp and 120 ft lbs? just curious to know as i am going to be rallying a 1.8 and need power! thanks
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Old 06-07-2002, 06:55 AM   #2
Kevin Thomas
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Default Why

Have you posted this question at the 'Ultimate Subaru Message Board'? I'm curious to know myself and will be following this post.
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Old 06-07-2002, 09:34 AM   #3
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I believe they went from single port exhaust to dual port....
wac would know... ( I think)
AO
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Old 06-07-2002, 01:31 PM   #4
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They changed the compression so they must have messed with other stuff too.

Probably the same reason the 2.2L got a couple horse bump as well.
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Old 06-08-2002, 01:32 AM   #5
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Edit: Wierd, i'd like to take a look at a 97 1.8 now...

The compresion ratio is 9.7 on 97's vs. 9.5 on previous 1.8's... Hmm...

Last edited by Kostamojen; 06-08-2002 at 01:40 AM.
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Old 06-09-2002, 03:57 AM   #6
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Also found out that the 97 EJ18 gets its 120 torque at 4000rpms vs. 4400 rpms for the previous EJ18's with the 110 torque...

I do know for sure now that the 97's have OBD-II vs. our OBD-I
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Old 06-09-2002, 08:01 PM   #7
mcu81
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kev, whats the ultimate subaru message board?????? oh btw, when you goin to atco and spraying the xt6? i wanna see and film!
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Old 06-09-2002, 08:01 PM   #8
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oh btw, i sourced my info at cars101.com

anyone got specs on these motors?
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Old 06-10-2002, 01:47 AM   #9
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Quote:
Originally posted by mcu81
oh btw, i sourced my info at cars101.com

anyone got specs on these motors?
What specific specs do you mean?
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Old 06-10-2002, 08:47 PM   #10
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I was unaware that they even made the 1.8 after 96. Also what is meant by dual port exhaust? A port for each cylinder, meaning 4 in all? Or 2 per cylinder? this confuses me, please explain?
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Old 06-10-2002, 09:00 PM   #11
mcu81
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were there only 3 valves/cyl pre 97 then 4 in 97?
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Old 06-11-2002, 02:24 AM   #12
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Quote:
Originally posted by mcu81
kev, whats the ultimate subaru message board?????? oh btw, when you goin to atco and spraying the xt6? i wanna see and film!
The Ultimate Subaru Message Board
This place is old school scooby paradise.

I don't want to spray the XT6 because my fuel issues are still present. I still have to resolve my lean running condition between 5k-6k rpm. Otherwise, the bottle is full and just begging to be used in the trunk.
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Old 06-11-2002, 09:27 AM   #13
mcu81
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kt have u figured out why its running lean? do you have a different intake system on the car? on our rexes some intakes lean out the mixture......do you have a S-AFC?
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Old 06-11-2002, 11:29 AM   #14
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Quote:
Originally posted by mcu81
were there only 3 valves/cyl pre 97 then 4 in 97?
They were always 4 valves per cylinder IIRC.
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Old 06-11-2002, 11:49 AM   #15
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Quote:
Originally posted by Hawk296
I was unaware that they even made the 1.8 after 96. Also what is meant by dual port exhaust? A port for each cylinder, meaning 4 in all? Or 2 per cylinder? this confuses me, please explain?
I think it's the # of exhaust holes coming out of the head into the exhaust pipes. But I didn't know that the 1.8 or 2.2 had dual ports. If you go to SPO's website they've got the 2.5l header and the 2.2l header, and you can see what I'm talking about.

SPO performance parts
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Old 06-11-2002, 12:38 PM   #16
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In 1997 Subaru made several changes to the engines regardless of the displacement.

1) they raised compression to 9.7/1, the engines became interferance motors.

2) they reduced friction in several ways;
eliminated piston side-skirts
changed from Hydraulic Valves to Solid lifters (adjustable)

3) made adjustments to the FI map.

The question of Dual-Port or Single-Port applies to CA emissions vs Fed emissions. Before 1995, all EJ motors were Dual-Port. In 1995 CA Emissions Vehicles (Subaru) became TLEV motors and went to the Single-Port configuration.
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Old 06-11-2002, 12:58 PM   #17
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The solid lifter were only on the 2.5L engine.

I am going to double check the exhaust ports but I am pretty sure that my 97 1.8L has double ports, but don't quote me on that.
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Old 06-11-2002, 02:40 PM   #18
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wow! thats alot of redesign for one year! maybe ill have to go for that!
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Old 06-11-2002, 04:22 PM   #19
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Quote:
The solid lifter were only on the 2.5L engine
I have a factory Service Manual to referance, if there is a referance to contradict this please share it.
Otherwise, please don't make absolute statements if your facts are in doubt.
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Old 06-11-2002, 05:24 PM   #20
mcu81
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Quote:
Originally posted by SubyTechMaster


I have a factory Service Manual to referance, if there is a referance to contradict this please share it.
Otherwise, please don't make absolute statements if your facts are in doubt.
WOW! solid lifters for the 1.8! i gotta find a 97 1.8 for my 95 L
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Old 06-11-2002, 07:03 PM   #21
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I stand corrected. The 2.5L was the only one to use shims to adjust the valve clearence.

Solid lifters plus the higher compression ratio would certainly make more power.

My apologys to everyone.
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Old 06-11-2002, 07:15 PM   #22
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Quote:
Originally posted by SubyTechMaster
In 1997 Subaru made several changes to the engines regardless of the displacement.

1) they raised compression to 9.7/1, the engines became interferance motors.

2) they reduced friction in several ways;
eliminated piston side-skirts
changed from Hydraulic Valves to Solid lifters (adjustable)

3) made adjustments to the FI map.

The question of Dual-Port or Single-Port applies to CA emissions vs Fed emissions. Before 1995, all EJ motors were Dual-Port. In 1995 CA Emissions Vehicles (Subaru) became TLEV motors and went to the Single-Port configuration.
1) what is invovled with that specifically?

2) I guess I cant mess with the piston side skirts, but I would have to get '97 heads in order to have the solid lifters no? Or could I just get the lifters and put them on my current heads?

x) My exhaust ports are identicle to an RS exept my header is .25 smaller in diameter... An RS header can bolt right up to my car (I had them side by side)
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Old 06-12-2002, 12:44 PM   #23
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why all the fuss over this? unless you're limited to 1.8 liters as some kind of racing class rule...?
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Old 06-12-2002, 02:40 PM   #24
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Quote:
Originally posted by RaceCarRiot
why all the fuss over this? unless you're limited to 1.8 liters as some kind of racing class rule...?
i am, im racing production in scca club rally
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Old 06-12-2002, 06:35 PM   #25
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gotcha. that's what i figured...just wanted to make sure.
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