Is my forester a DOHC or a SOHC? - Subaru Forester Owners Forum
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post #1 of 15 (permalink) Old 09-08-2010, 07:41 PM Thread Starter
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Is my forester a DOHC or a SOHC?

Hi guys

Im still a noob and i was wondering if my 98 forester ( produced in august 97) is a dohc or a sohc ? and what is the difference ?

Thanks!
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post #2 of 15 (permalink) Old 09-08-2010, 08:09 PM
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NA is probably a SOHC.
SOHC http://1.bp.blogspot.com/_OziIedGW-A...reza_boxer.jpg

DOHC http://i49.photobucket.com/albums/f2...r/IMG_0526.jpg

That's how I understand it anyway. You see the front cover is different. That's the easy way I think. Tho I'm not 100% sure on this.

If anything it's way easier to change spark plugs on the SOHC.

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post #3 of 15 (permalink) Old 09-08-2010, 08:48 PM
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According to http://www.auto123.com/en/subaru/for...arid=985900301 and 1998 Subaru Forester Specifications - View New Subaru Forester 1998 Specs & Data at InternetAutoGuide.com its a DOHC.

Specs: 2,457 cc 2.5 liters 4 horizontal front longitudinal engine with 99.5 mm bore, 79 mm stroke, 9.7 compression ratio, light alloy block, light alloy head, double overhead cam and four valves per cylinder.

2009 Subaru Forester Touring Edition, AT
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post #4 of 15 (permalink) Old 09-08-2010, 09:28 PM Thread Starter
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Quote:
Originally Posted by Elmy View Post
If anything it's way easier to change spark plugs on the SOHC.
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Originally Posted by Trainman View Post
double overhead cam

Nice I got the harder one! ha ha ha!
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post #5 of 15 (permalink) Old 09-09-2010, 04:06 PM
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Your engine is the phase I DOHC. The thrust bearing is in the center of the block instead of being in the rear like the SOHC phase II engines. They tend to get piston slap and have the headgasket problems and overheat.

If ever you need a hand with anything, let me know. I am in Vaudreuil just off the Western part of Montreal.

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post #6 of 15 (permalink) Old 09-09-2010, 04:09 PM
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As for the DOHC spark plug access. You could always unbolt the engine mounts and the pitch fork. Then just jack up the engine to clear the chassis.

2001 L 5 spd, Borla header, custom exhaust.
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post #7 of 15 (permalink) Old 09-09-2010, 04:11 PM
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did the SOHC ever have HG problems?

Looking for the love...
99 Ford Escort: unwanted
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post #8 of 15 (permalink) Old 09-09-2010, 04:11 PM
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Quote:
Originally Posted by huck_this View Post
As for the DOHC spark plug access. You could always unbolt the engine mounts and the pitch fork. Then just jack up the engine to clear the chassis.
You ever done this?
I imagined it would be a whole lot of things to disconnect to before you can jack it up without taking the whole transmission and stuff with you....

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post #9 of 15 (permalink) Old 09-09-2010, 04:19 PM
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did the SOHC ever have HG problems?
Yes

His - 08 X Prem 5mt
Hers - 08 X 4EAT
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post #10 of 15 (permalink) Old 09-09-2010, 11:51 PM Thread Starter
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Quote:
Originally Posted by huck_this View Post
Your engine is the phase I DOHC. The thrust bearing is in the center of the block instead of being in the rear like the SOHC phase II engines. They tend to get piston slap and have the headgasket problems and overheat.

If ever you need a hand with anything, let me know. I am in Vaudreuil just off the Western part of Montreal.
Thank you very much!

Im located in the west island so Vaudreuil is only 15 mins away from here.

Quote:
Originally Posted by huck_this View Post
As for the DOHC spark plug access. You could always unbolt the engine mounts and the pitch fork. Then just jack up the engine to clear the chassis.
Yeah thats what i thought, no idea where the mounts are tho ahah.

Where do you buy your parts besides the dealer,napa,ACdelco,etc ?
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post #11 of 15 (permalink) Old 09-10-2010, 09:23 AM
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You ever done this?
I imagined it would be a whole lot of things to disconnect to before you can jack it up without taking the whole transmission and stuff with you....
Its easy. Just take the airbox off the throttle body, unbolt the pitch stopper thing, unbolt the engine mounts and jack up (we used a block of wood between the oil pan and jack). Theres enough play in the trans mounts and all of that to get it up a few inches, enough where you can get better access to the spark plugs.

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post #12 of 15 (permalink) Old 09-10-2010, 05:11 PM
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Where do you buy your parts besides the dealer,napa,ACdelco,etc ?
Pièces d'auto L.S in Dorion. Good prices and NO made in China crap!!!! I also go to Subaru des Sources. The parts guys are really nice and honest.

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post #13 of 15 (permalink) Old 09-10-2010, 05:24 PM
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Quote:
Originally Posted by funkymonkey1002 View Post
Its easy. Just take the airbox off the throttle body, unbolt the pitch stopper thing, unbolt the engine mounts and jack up (we used a block of wood between the oil pan and jack). Theres enough play in the trans mounts and all of that to get it up a few inches, enough where you can get better access to the spark plugs.
Thx. Airbox. Only airbox I have is where the filter sits. You must mean the IC....
The pitch stopper I'm not sure what is but I suspect it sits underneath then....


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post #14 of 15 (permalink) Old 09-10-2010, 06:50 PM Thread Starter
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Pièces d'auto L.S in Dorion. Good prices and NO made in China crap!!!! I also go to Subaru des Sources. The parts guys are really nice and honest.
Oh really? I went to sources for the first time yesterday to buy coolant and the guy wasn't really "nice" but i'm guessing he wasn't the parts guy because of his uniform, he looked like a mechanic. Maybe he was replacing the parts guy ? I dont know ...
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post #15 of 15 (permalink) Old 01-30-2011, 02:21 AM
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Remove your intake on the passanger side and battery and washer resivour on the driver's side. The plus are easily removed.
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