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displaying posts 1 to 5 of 5
| Author | Subject: Cambelt tension |
 heliosphan
Senior User  Location: UK Registered: 14 Sep 2007 Posts: 948 Status: Offline |
Post #1
I'm replacing the cambelt and can see there are differing recommendations for the correct tension on the long belt run. Currently I can twist the belt to about 45 degrees. I wouldn't be able to twist it to 75 degrees without a reasonable amount of extra thumb and finger force. It definitely won't get to 90. Bearing all of that in mind, is my belt too tight or correct? |
 Posted 5th Jul 2015 at 11:50
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armzsc6
Seasoned Pro  Location: Crowborough Registered: 22 Mar 2008 Posts: 3,445 Status: Offline |
Post #2
45 degrees on the longest side is perfect ________________________________________ Black power baby! SUUUUUPERCHARGED Seat Leon FR TDI 190BHP 300lbft daily gti-6 killer :p 12x 306's owned so far Cambelts, clutches, service work carried out on All makes and models, Peugeot Citroen / mitsubishi specialist. Pug planet / Citroen Lexia diagnostics / code reads available. |
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Posted 5th Jul 2015 at 12:59
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heliosphan
Senior User Location: UK Registered: 14 Sep 2007 Posts: 948 Status: Offline |
Post #3
Cheers. I have an irregular/pulsing whirring that may or may not be down to an overtightened belt. It might be nothing and I might be oversensitive to normal pully/belt-type noises with the cambelt cover off but what do you think of this: I've read this thread: ( http://www.306gti6.com/forum/showthread.php?id=159180 ) with varying opinions of tension and understand that a new belt will inevitably slacken slightly over time (thousands of miles I guess) so if that noise is due to belt tension, will it slowly become quieter? |
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Posted 5th Jul 2015 at 13:16
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heliosphan
Senior User Location: UK Registered: 14 Sep 2007 Posts: 948 Status: Offline |
Post #4
To conclude, I wasn't happy with the noise and thought it may have been a slightly over tensioned belt. I loosened and tensioned it again so that I can twist it about 60-70 degrees under firm pressure. I can twist it 45 degrees more easily, obviously. I would not be able to twist it to 90 unless I grabbed it with my fist and probably stressed the belt, which is impossible anyway due to the p**s-poor access. With the new tension the noise went away, proving that it was slightly too tight before. I should point out that initially, when I could only get it to 45 degrees, it was at the limit of my finger and thumb pressure. Other recommendations of 45 degrees probably don't intend this level of pressure. |
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Posted 6th Jul 2015 at 21:18
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,768 Status: Offline |
Post #5
Yep, personally I would set it so that on the longest side I could twist it to 90 degrees, at the limit of my finger and thumb, that's about right. ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone  |
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Posted 6th Jul 2015 at 21:59
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