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Timing Belt Covers - Yay or Nay?
Posted 05 March 2006 - 12:51 AM
Posted 05 March 2006 - 12:54 AM
Debris is what you need to worry about.
Posted 05 March 2006 - 01:15 AM
It takes 2 hours to change the belts with them, and 20 minutes without - you decide. I would rather keep an extra set in the car and be able to change them on the side of the road, than have to have the car towed. that to me makes it worthwhile. Plus I've maintained several EA82's without them for many thousands of miles (on road only) with absolutly no ill effect. If anything the belt covers IMO tend to collect debris, and keep oil and other contaminates from draining away from the belts and pulleys. The whole setup is easier to maintain and keep clean without them. Makes belt and pulley inspection a simple matter of opening the hood.
Posted 05 March 2006 - 01:31 AM
(i invented open belts)
Posted 05 March 2006 - 09:56 AM
I have seen countless VW Rabbits, Golfs, etc with no timing belt covers. They go forever with no issues. On these cars, the cam and intermediate shaft seals weep oil and the cover holds it in. Then eventually the timing belt that is soaked in oil deteriorates prematurely and fails. Plus, having the cover off allows you to eyeball things periodically much easier.
If ( when ) I have to do my Loyale TBs, the covers will remain off.
Posted 05 March 2006 - 12:05 PM
Because of him I the timing belt covers on the garage floor. It looks neato without them, too!
Posted 05 March 2006 - 12:57 PM
On a clean, well sealed engine, they're good. They keep crap off the belts.
On pretty much any of our Subarus, they're bad. They just serve to keep oil/coolant/etc puddled up for the belts to snake through.
My old DL is without covers, and when I get around to pulling the engine in my GL to seal all the leaks up, it'll go back in without covers.
Posted 05 March 2006 - 01:10 PM
or the covers might be there to protect the fingers of hapless subaru owners.
I've also seen exposed timing belt covers in other cars and it does beg the question, "why not on a subaru?" ... our cars do keep the engines lower in the bay due to the H configuration, but there are also splash guards under most of the bottom of the engine bay.
Maybe the belts could break more often due to projectiles or outside crap, but the USMB crowd is a little more inclined to shrug off such things. Like you said, 20 minutes vs. 2 hours..
Posted 05 March 2006 - 02:25 PM
anyway, covered vs not covered. oil and gunk vs projectile/debris
open belts: pros-
visual inspection. less work to do belts or seals or water/oil pump
cleaner look. oil that leaks can fling off or drip away, rather than accumulate on the belts. if the belt is getting bad you will see it right away, rather than poking fingers thru holes off the side of the road
keep your loose rags tucked away securely! speculation about the bearings in the idler pulleys from being exposed. watch danglies when under the hood(as you would with all the rest of the belts anyways)
projectiles/debris vs oil and gunk:
i like a clean looking motor. uf anything leaks the ol car wash will take care of that.
so far the ONLY REPORTED FAILURE DUE TO OPEN BELTS was from a loose rag that caught around the crankshaft, blowing both belts. this was on my car.
so far not a problem in tall weeds, taller than myself, saplings, rocks, gravel, snow, water, mud.
every now and then i'll find the evaporation canister riding on top of the timing belt, no harm(flip it back over the spfi inlet tube)
one time i lost either a bolt or the oil fill cap, somtething of that nature, i discovered it riding atop the driver side belt between the oil pump and the tensioner
it is to my belief and might as well say from seeing so myself, any debris are going to be knocked away by spinning belts before they would have a chance to get anywhere
i might as well had a hay bail under my radiator when i pulled the motor but the belts have been just fine! tall grass and depris are more likely to puncture the radiator than to throw a belt
last and not least. why worry when all you need is a spare belt and a 12mm deep socket?
Posted 12 March 2006 - 02:18 AM
Posted 12 March 2006 - 02:51 AM
both of my GL's have them off....I'd never go back, even offroad.
if you're muddin regularly, hit 'em with some white lithium grease every now and again, you'll be fine.
and keep a set of tensioners/idler/belts in the car, then if anything does go wrong....replace em on the shoulder of the freeway!
Posted 12 March 2006 - 06:48 AM
Posted 12 March 2006 - 10:56 AM
Posted 12 March 2006 - 11:55 AM
You guys rock! I hate those ##$$%%## covers. Hadn't heard of anyone doing this but was considering at least splitting the bit behind the pulley
I originally left the covers on when I did my TBs, and split the middle cover to get to the belts in the future without pulling the crankshaft pulley. Finally I said "what the hell" and just pulled the outer covers entirely. I left the inner covers on mainly so there would be reference marks for the pulleys on the heads (although the really manly among us don't need 'em).
Posted 12 March 2006 - 12:28 PM
Posted 12 March 2006 - 12:33 PM
Ok.. I've seen references by people that you don't really need your timing belt covers. But of course, they were put on there by Subaru for a reason..
Yes and that reason is to make a Timing belt swap take an hour instead of 10 minutes like you can do with the covers off
Posted 12 March 2006 - 02:23 PM
no covers on my XT6 and no problems either.
Posted 12 March 2006 - 08:34 PM
Posted 12 March 2006 - 11:41 PM
I'm sure it'd do great without timing belts, as long as you have someone to push
Anyone beach it without timing belts?
Sorry, had to
Posted 13 March 2006 - 02:33 PM
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