96 subaru outback 2.5 HELP!! timming belt

[coolked]

well, the suby hit a ditch smashed in the light pushing and breaking into the timming belt and broke passenger side cam sprocket gear's top and bottom. Ive read throught the haynes manual and found it doesntexplain the professes of putting the timming belt back on and where to set all the camshafts. does anyone know how to go about this? Ive done one before, but not on a dual camshaft.. also by chance does anyone have extra camshaft gear top and bottom for timming belt that I can buy? someone also said that it could be a interference engine possibly causing piston to bend valves.. is this true on this engine? car was not moving when it hit and broke.

thanks!

Austin

[a97obw]

well, the suby hit a ditch smashed in the light pushing and breaking into the timming belt and broke passenger side cam sprocket gear's top and bottom......car was not moving when it hit and broke.

 

 

Wasn't it Newtons Third Law that states "any reaction will have an equal and opposite reaction"? The dog almost ate my homework, once!

 

My friend, IF the engine were running when all this quantum physics stuff happened to your Subaru, unless your subaru was traveling at the speed of light and time had stopped, you gots bigger mechanical problems than just replacing the camshaft sprockets and putting the belt back on.....

[ballitch]

yes the motor in an interference motor, you might already have bent valves, then again you might not. but to be sure, your going to have to pull the heads and see. maybe there is another way that will tell you for sure(w/o pulling heads). if the valves are bent, you might be able to get either new heads, or new valves to replace the bent ones. might also need new valve seats and seals with the new valves. all that added up could end up costing you more than a set a good used heads. but shop around and see what you can do.

 

 

~Josh~

[coolked]

That was kind of a confusing response. The Plastic sprocket Did break..yes, the actual timming belt was not broken but damaged, I could reuse it but dont want to chance it. I say the car was Not moving because someone told me if the timming belt breaks while the car is moving it may cause damage.. My original question was..Is the Engine a NON-Interference engine?

[coolked]

hmm dang, that sounds not so good. Can I just tel my putting the timming belt back on and see if it runs?

thanks,

Austin

[tcspeer]

If you will type in interference engine on the search you should be able to find out. I know the 96 2.2 is not and the 97 2.2 is but I dont know about the 2.5 You should be able to do the timing belt job with a Haynes manuel, I was able to do my 2.2 with it and it also had good photos and instustions for the 2.5 If you get it back together and it wont start you can check the compression to see if the valves are bent.

hmm dang, that sounds not so good. Can I just tel my putting the timming belt back on and see if it runs?

thanks,

Austin

[Gnuman]

It does not matter if the car was moving when the timing belt breaks. It does matter if the engine was moving. You say that the timing belt did not break? you got really lucky then. To the best of my information you do have an interference engine. Your engine is also susceptable to teh infamous headgasket leak. My recomendation is to change out the headgaskets, and have the heads checked while they are off, to rule out any chance of bent valves. When you reinstall the heads, with new headgaskets, you can install the new cam sprockets, and have killed two birds with one stone.

[NOMAD327]

if your car insurance is repairing the body work, it will also repair the engine if it is damaged. It sounds like your engine will be internally damaged by what has happened. The only problem is this may make the difference between repair vs. total loss from the insurance companies perspective.

[idosubaru]

2.5 is an interference engine.

timing belts aren't that hard, i'd assume nothing and test the motor.

 

you can pressurize the cylinders (just blow air in them) with an air compressor and see if air is gushing out the intake or exhaust. if it is you bent some valves. a friend of mine did a 2.5 that broke a timing belt last year, had to replace one bent valve and that was it. not a big deal.

 

or install a new belt and do a compression test. very easy to do. compression testers are $20 or so. or just install the old belt, compression test and if all is good then get new timing belt, etc.

 

subaru dealer i talked to said he's definitely seen 2.5's come in with broken timing belts which did not experience any damage. he said most do not. maybe he was lying, but i don't know why he would. that's at the dealer i trust "the most" around here, and i dont' really trust any.

[Bmm001]

subaru dealer i talked to said he's definitely seen 2.5's come in with broken timing belts which did not experience any damage.

 

I've heard that too. It's actually in one of the articles on the Endwrench website. They said it never hurts to hang a new timing belt and do a compression test. Perhaps the engine stopped before anything actually hit.

 

Brian M.

[nipper]

You can have belts break under normal circumstances and not have valves bend. This is not a normal circumstance, but the good thing may be that the car stalled because of the impact, just as the timing belt got screwed. i would go though the motins of replacing the timing belt and do a compression test. If you need to pull the heads at that oint you really havent done that much waisted work.

 

nipper