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Old 10-26-2011, 09:38 PM   #1
naku
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Default 2006 Impreza 2.5i timing belt replacement.

Hey guys. My 2.5i is due for a timing belt replacement. I'm just wondering if this is something I should tackle myself or not. I have done a fair bit of work on vehicles over the years but I get the impression this is a bit more tricky than a typical North american vehicle timing belt replacement. Im just looking for some imput from anyone who has tackled this job themselves and if anyone might have any links to step by step videos covering the job. Thanks in advance, .
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Old 10-26-2011, 09:39 PM   #2
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It's an 06 Impreza btw.
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Old 10-26-2011, 10:49 PM   #3
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iNput.


I don't know why everyone (who doesn't work on Subarus) thinks they're hard to work on. Read Meaty's guide and it should be plenty easy if you're familiar with wrenches at all.

Now granted I've done them a time or two but it only took me about an hour to R&R the timing belt on my 96 this afternoon so I could replace a leaking seal.
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Old 10-27-2011, 09:26 AM   #4
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The TB isn't difficult but it is high stakes if that makes sense one slip of the belt and there goes your engine. However if you are mechanically savvy (which you seem to be) this is a job you can do with confidence
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Old 10-27-2011, 01:13 PM   #5
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It is an interference engine so double check your work before trying to start the car.
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Old 10-27-2011, 10:07 PM   #6
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good point
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Old 10-27-2011, 10:42 PM   #7
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Do the waterpump while you're at it. If the pump goes out in the future you'll have to do the timing belt again. Save yourself the trouble and do'em at the same time
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Old 10-27-2011, 10:47 PM   #8
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Water pumps fail about as often as steering wheels and liftgate glass. It's a waste of money 99% of the time.
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Old 10-27-2011, 10:48 PM   #9
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Thanks everyone for the imput. I've done plenty of work on other vehicles, including a couple rebuilds, so i'm pretty confident i could do this. For the price of a water pump, I guess that should go too. Got a link to this guide Cosmo?
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Old 10-27-2011, 10:53 PM   #10
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Old 10-27-2011, 11:06 PM   #11
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thanks mr. dictionary...lol
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Old 10-28-2011, 11:01 AM   #12
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Many people have different takes on what to replace and not replace, I did my 2006 2.5i wagon TB at 120k miles. For my time and peace of mind I did all idler pullies, temsioner, the water pump, timing belt, and gaskets on the timing cover. Also replaced timing cover bolts, valve cover gaskets, and spark plug grommets under the valve covers. (we are in NY and everything rusts here)

Another thing to look out for is leaking head gaskets, mine had this and it got much worse shortly after the timing belt change.
I'm in the middle of head gasket replacement now and really wished I had of done it at the same time as the timing belt.
If you have any coolant usage or see coolant and or oil on the bottom of the engine you probably have a bad head gasket.

timing belt is an easy job to do if you follow the directions and take your time.
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Old 10-28-2011, 02:45 PM   #13
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[quote=BDZ;35489190]Another thing to look out for is leaking head gaskets, mine had this and it got much worse shortly after the timing belt change.
I'm in the middle of head gasket replacement now and really wished I had of done it at the same time as the timing belt.
If you have any coolant usage or see coolant and or oil on the bottom of the engine you probably have a bad head gasket.
quote]

What!?!?!?
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Old 10-28-2011, 04:35 PM   #14
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Yep less than 20k miles on the new timing belt and my engine is torn down getting new head gaskets. I could have saved a bunch of time and a little money by doing the head gaskets with the timing belt.

2006 2.5i
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Old 10-28-2011, 04:41 PM   #15
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either my pan gasket leaks or i have head gasket problems too. no coolant in the oil so im not sure i really care that much yet.
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Old 10-28-2011, 07:08 PM   #16
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Thanks everyone for the replies, it's starting to sound like it might be time to trade it in. I really dont feel like changing head gaskets
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Old 10-28-2011, 09:41 PM   #17
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On a SOHC car the head gaskets aren't all that much harder to do than the timing belt.

There are a few extra steps, and it's easier if you take it to a shop and have the A/C sucked down and then re-charged after so you don't have to deal with working around the lines/compressor.


As far as the dictionary thing goes, do you enjoy looking illiterate? Imput is not a real word. My intention is to enlighten you so you can appear more intelligent and succeed at a higher level everywhere in life.
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Old 10-29-2011, 12:31 AM   #18
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I'm so glad you could correct my spelling. I feel so much more intelligent now and im glad that my ILLITERASEE is not gonna offend anyone. Give me a f'n break.
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Old 10-29-2011, 12:32 AM   #19
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I just may aply for skool now
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Old 10-31-2011, 10:50 AM   #20
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Not sure why you'd do anything to the AC besides remove the battery and lay the compressor carefully over in that area. No need to evacuate or break the system seal on the AC to do head gaskets.

On the 2006 2.5i my HG's leaked externally for I'm guessing almost 40k miles before the car finally blew one bad enough to start triggering misfire codes and poor performance. No fuel mileage penalty, but oil consumption due to leakage did go from zero to roughly 1qt per 2k miles and coolant usage was getting up to about 8oz per 1k miles.
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Old 10-31-2011, 01:51 PM   #21
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i use about a quart every oil change. coolant is getting used very minimally, filled it up twice ever. i just broke over the 60k mile mark. i beat on this car like it owes me money.
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Old 10-31-2011, 03:52 PM   #22
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I never had coolant in the oil either. Just progressively started leaking more of both fluids, then started misfiring due to futher HG failure.
Based on my car's behavior you are probably good at least until you do the timing belt.
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Old 10-31-2011, 09:10 PM   #23
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Quote:
Originally Posted by naku View Post
I'm so glad you could correct my spelling. I feel so much more intelligent now and im glad that my ILLITERASEE is not gonna offend anyone. Give me a f'n break.


Ok, I get it. You're a 17 year old know it all.


Carry on.
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Old 11-01-2011, 12:01 AM   #24
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The 06+ cars start leaking oil past the headgasket from the oil return galleries down out the bottom of the block EARLY. I haven't seen one start leaking oil before 40k, but I'm sure I will someday. So those of you that are shocked that you might have a HG leak on your 2.5i already, get over it. It happens.

The timing belt service is much easier than the headgasket service. I would say most mechanically inclined people. It just takes a little patience and a willingness to scratch the hell out of your arms. The headgasket service is much more involved. In fact, I think that anyone that does it with the engine in the car is either a cheap hack (if they're doing it willingly) or needs to work someplace else (if the boss forces them to do it that way). Pull the engine so you can see what you're doing with the HG service and have room to work. This is especially important if it's your first time doing it. You're just a lot more likely to get it right if you're not fighting past the chassis down in the engine bay to get it done. Additionally, you need to be extremely fastidious about cleanliness and be mentally disciplined to focus solely on the right way to do things. This is what makes most DIYers have problems with their HG jobs: they just don't pay enough attention.

For the timing belt service, if you don't replace the water pump, idlers, and tensioner, you're a fool. Well, unless you just need to get a couple more months out of the car before you sell it. Then you're just mean


Also, there's absolutely no need to evacuate and refill the AC system. Once you've unbolted the AC compressor from the engine, it'll happily sit where the battery normally goes. Some years of car need a little bit of a "booster seat" to sit on to keep the hoses from kinking. Some will sit fine on the battery tray, some will sit fine on top of a quart of oil laid on its side, and some will need a coffee can. Regardless, you can get the AC out of the way without breaking its seal.
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Old 11-01-2011, 09:22 AM   #25
Bio248
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you seriously pulled the motor to do head gaskets? that may be easier, but is it really that necessary? i've never pulled a motor for headgaskets on any car ever.
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