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new timing belt- whine in the front of the motor!

Posted: Tue Jan 09, 2007 8:44 pm
by benski105
i have just replaced the timing belt!
i just started up the car and there is a whine i have never noticed before!

is this something that happens when a timing belt is new or is the belt perhaps too tight?

i am using a rebuilt hydraulic tensioner-

any suggestions out there that might help me fix this or maybe some people that can confirm that this is normal!!


thanks

ben

Posted: Tue Jan 09, 2007 10:42 pm
by David
Ben,
Provided you have the correct belt, the whine usually indicates the belt is too tight. Remember also the belt is de-tensioned by the hydraulic unit immediately on startup. If you can you strum a tune on it with the engine stopped, I'd back it off a bit.

David

new timing belt- whine in the front of the motor!

Posted: Tue Jan 09, 2007 10:49 pm
by benski105
hi david,
thanks for that!!
ill have a look tomorrow.

hopefully that is all it is..

if not.... ill be back with more queries.

regards

ben

Posted: Wed Jan 10, 2007 12:21 am
by Nicholas
I've been down this same path with my car. I replaced the belt, the whine began and so I proceded to try different tensions. To eliminate the whine in my case the belt would be too loose, I have a fixed style tensioner. I spoke to an alfa mechanic and he has driven the the car and seemed to think there is no problem, however, I'm not sold on the noise myself but it's been there for a couple of years now, I'll be replacing the belt again soon so I'll see how I go this time.

So, in conclusion that was a pretty pointless post on my behalf !

new timing belt- whine in the front of the motor!

Posted: Wed Jan 10, 2007 1:32 am
by benski105
thanks nicholas.

interesting to hear you have had the issues!!

ill keep you posted how i get on!!

tomorrow will hopefully give me a few answers!!


ben

WTF

Posted: Wed Jan 10, 2007 1:52 am
by jol
Barry already wrote this in your earlier thread, read and search before starting another thread in a topic that's already been discussed.

new timing belt- whine in the front of the motor!

Posted: Wed Jan 10, 2007 12:19 pm
by benski105
Jol,

i thought i recalled there being such a topic but none of my searches brought it up!!

if anyone out there would care to forward me the link then id be keen to have a read!!

didn't mean to wind anyone up by posting another already covered topic.... :)

Re: new timing belt- whine in the front of the motor!

Posted: Thu Jan 11, 2007 2:48 pm
by jol
benski105 wrote:Jol,

i thought i recalled there being such a topic but none of my searches brought it up!!

if anyone out there would care to forward me the link then id be keen to have a read!!

didn't mean to wind anyone up by posting another already covered topic.... :)
http://www.alfagtv6.com/bb/viewtopic.php?t=2095
Barry wrote:Ben,The lack of reply here might have to do with the fact that this subject has been covered a trillion times?

Do a search,major info available already.

For what its worth,go solid,mechanical and peg everything so it wont come loose..If the belt whines,its too tight..
A 90 deg twist on the long side is good-make sure your crank drive is not worn,most are.. 8)

Posted: Thu Jan 11, 2007 8:18 pm
by Barry
Ben,no one is flaming you here mate...Ive just done a search and came up empty!!
Its out there,been done .Dont know why I cant get to the info though..

A rule of thumb is to be able to twist the belt 90 deg on the long side..This usually sorts out the whine.. Unless Mike or Jim are driving,then your stuck with the whine!!..hehe..
Dont drive it too long with the whine..they're strong but it will break..
Just back it off slightly...
Covers are a pain every time,arnt they? :D :wink:

new timing belt- whine in the front of the motor!

Posted: Thu Jan 11, 2007 10:31 pm
by benski105
cheers guys!

think it was just too tight. i loosened it off a bit and seems much better.
ill try the 90 deg twist trick too. may still be a bit tight.

the whole belt change was well worth the effort! found a split vacuum advance line!!! its amazing what i bit of ign advance does to response and power....

so far the tensioner is holding all its oil too!!!

cheers

ben

Re: new timing belt- whine in the front of the motor!

Posted: Fri Jan 12, 2007 3:57 pm
by jol
benski105 wrote:cheers guys!

think it was just too tight. i loosened it off a bit and seems much better.
ill try the 90 deg twist trick too. may still be a bit tight.

the whole belt change was well worth the effort! found a split vacuum advance line!!! its amazing what i bit of ign advance does to response and power....

so far the tensioner is holding all its oil too!!!

cheers

ben
It's pretty tight to bend it 90deg too, if you're able to turn it somewhat less but feel that you could do more if you had the space (and the whine is gone), you should be safe. I have yet not read about anyone having the cambelt break when changed within intervals on theese engines, but plenty that had the belt skip some teeth caused by leaking tensioners greasing up the belt :)

Spray motor starter (flammable gas, http://www.clasohlson.se/Archive/images ... 085232.jpg ) at every rubber part to search for air leaks, the engine would react the same when you spray on a leaking hose as it does if you spray it into the intake, happy hunting :wink: