Just wanted to share what happens to your timing bearings when they fail

 

This is the new bearing...

 

This is the old bearing

 

And this is what I looked like when I saw the bearing

 

 

 

More pictures for you picture hounds

 

 

 

 

And sorry for the fuzzyness of the pictars.

The camera was too complicated for me to get all the settings right before

each picture

 

Twitch

How many miles on them?

This is what happens when one of those ball bearings gets lodged in the race and locks up....

 

http://www.main.experiencetherave.com/subaru/images/shreddedtbelt/

This thread shows two examples of why it is good to change your timing belt idler pulleys when replacing the timing belt. Yeah you might save a few $$ when changing the timing belt by not changing them but if they fail before you change the timing belt again, you will spend even more $$$$.

How many miles on them?

 

These came off Xandra. and her engine had around 250k, unless they were

replaced with the engine swap that was performed at 90k for the engine,

which I seriously doubt.

I didn't even replace them when I redid the top end of the engine.

 

And a little Bio on Xandra, she's a 90 body with a 91 engine and a 94 tranny.

 

This is what happens when one of those ball bearings gets lodged in the race and locks up....

 

http://www.main.experiencetherave.com/subaru/images/shreddedtbelt/

 

That practically happened to Zeh Vagon, but it only ate a few teeth off.

 

Twitch

Edited March 9, 201016 yr by Twitch de la Brat
Forgot Details

Last one I did - bearing locked up but the belt was strong enough to spin the inner race - it used the bolt as it's bearing and squeeled like a stuck pig for 150 miles. Destroyed the bearing, the bolt, and the water pump.

 

GD

my former 94TW had this happen to the nice person i sold it too. Also, his main crank pulley decided it wanted to commit suicide same time too.

 

If anybody services an engine, inspect for any wear at all, and replace with new or you are taking a big chance.

Well, it all went together nicely and I got it timed on the first try

 

And what I believe had happened was the bearings failed soon after I redid the

heads and the outer race just rode on the inner race until it wore to the point

the belt lost tension and the bearing started to make the belt bind against itself.

 

I'll take pix of the back of the belt.

Its burnt, cracked and bubbled.

So the belt would've failed within, probably another 10k if not 5k.

 

Twitch

Looks fine to me... must be those new super low friction air bearings. :-p

dang.... definately glad I did mine. Mine were original with 224,000 miles on them. I have 3,000 miles since timing belt change, so far so good. Thanks to all for the guidance!! I took pics of old against new.