Mike
East Midlands
Posts: 3,387
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Jun 30, 2012 11:46:18 GMT
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I've been fooling around with the Audi this morning and found that the cause of it's water leak was a little core plug situated behind the cambelt tensioner. Great I thought, I'll whip off the tensioner and see if I can sort it. I've now come to putting the belt back on, I chocked the pulleys when I took the belt off, I put the tensioner back on and tightened it up, but now I'm paranoid that the timing might be out, despite nothing moving. Is there anyway of checking everything is ok before starting it up? What's the margin of error for timing belts being out before it starts to mash up internals? First time I've messed with a cambelt, can you tell?  |
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bortaf
Posted a lot
Posts: 4,549
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Jun 30, 2012 12:03:36 GMT
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TBH there's not any margin on a lot of moderns but as I have no idea what engine you have I cant really say? give us some info to work with here, petrol, diesel, 4Cly, 5Cyl or mayby even a year ? All the pullys should be clearly marked with a line or dot on the outer rim of the wheel or similar and a dot ot line to match up to on the engine, you shoud have marked all the pullys and belt with tippex before removal but that's one to remember for next time  One other thought, how old is the belt? unless rather new I wouldn't re-use it at all, you should never re use old belts they don't like being stretched then having the tension released and re applyed. I would turn the engine over by hand and fell for any resistance or something stoping it turning but the only real way is to align the timming marks. |
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Last Edit: Jun 30, 2012 12:04:45 GMT by bortaf
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Mike
East Midlands
Posts: 3,387
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Jun 30, 2012 12:10:58 GMT
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Yeah, more info might help...
It's a 1981 Audi 80 with the 1588cc 4-cylinder petrol engine. The belt is only a few hundred miles old. I've turned the engine by hand, i got a full turn without any noises or anything stopping it. I'll double check the timing marks, might put my mind at rest.
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Dez
Club Retro Rides Member
And I won't sit down. And I won't shut up. And most of all I will not grow up.
Posts: 11,713
Club RR Member Number: 34
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Jun 30, 2012 12:12:05 GMT
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i would also fit a new belt for the sake of 15-20 quid. maybe even the tensioner too if you don't know when it was done.
if its the audi 80 I'm thinking of, a tooth either way and it wont mash it, itll just drive horrible. id buy a haynes and a belt and do it right, the car will run so much better for it.
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Jun 30, 2012 12:29:50 GMT
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I would also fit a new belt for the sake of 15-20 quid. maybe even the tensioner too if you don't know when it was done. if its the audi 80 I'm thinking of, a tooth either way and it wont mash it, itll just drive horrible. id buy a haynes and a belt and do it right, the car will run so much better for it. ^This. |
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Mike
East Midlands
Posts: 3,387
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Jun 30, 2012 13:20:18 GMT
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Cheers for the help fellas, I checked the timing marks (as per haynes) and it was all lined up. Started up fine and revs up nicely, same as before.
EDIT: Forgot to say, the cambelt and tensioner were changed less than 200 miles ago, so I've re-used them.
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Last Edit: Jun 30, 2012 13:43:19 GMT by Mike
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