Balancer shaft belt - Alfa Romeo Forum
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bw
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Balancer shaft belt

Hi dudes,

Say I wanted to replace my balancer shaft belt and idler pulley...

a) could I do it myself with a low level of mechanical experience - would I need any special tools for the job and how tricky is it to do?

b) what should be replaced exaclty - the belt and idler, but are there any other bits/pulleys that should/could be replaced as a matter of course?

I only mention this because a garage mentioned the idler was making a slight whining noise a couple of months ago and I don't want to leave it too long and have it fouling up causing the belt to snap and getting wrapped around the timing belt (which is new by the way)

The car is a 1997 2.0 16v twinspark (super) and has done 52k.

any advise very much appreciated
 
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beany25
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it depends, have you got the money to spend getting your local alfa specialist to do it, if so, give it to him, if you do it yourself, make sure that your credit cards are empty, if it goes wrong, i have a fair amount of mechanical knowledge, but i dont like messing with things that might cost ME more money than the original job, i know thats not quite the spirit, and i may be wrong, it might be dead easy, but id trust it to someone who works on alfas. Coward..........you betcha ;-)
 
JimB
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a) You can replace it yourself if you have a reasonable amount of mechanical knowledge/ability.
you don't need any specialist tools. It's quite a straight forward job.

b)If you've just had the cambelt and tensioner done, then all you need to replace is the balancer belt itself and its tensioner pulley.
Just check the condition of the pulleys on the crankshaft and the two balancer shafts to see if they are badly worn. They shouldn't be as there is no real load on them like there is on the cambelt and it's pulleys.

Why don't you try taking the balancer belt off completely and leave it off. Then you wouldn't have to worry about it failing.
If you find the engine vibrates too much, you can always put a new one on later.
I read on the forum about someone having done that, supposedly gives another five bhp. It's worth giving it a go I'd say.
 
wrinx
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Quote:
JimB:

Why don't you try taking the balancer belt off completely and leave it off. Then you wouldn't have to worry about it failing.
If you find the engine vibrates too much, you can always put a new one on later.
I read on the forum about someone having done that, supposedly gives another five bhp. It's worth giving it a go I'd say.
Now you've done it, just wait 'til JB see's this eek! eek! eek!

wrinx
 
jimybob
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omfg....... eek! no im not saying anything....only why didnt you have it all when you had the timing belt done.??
 
jimybob
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jim if you really were an f1 mechanic you would know the importance of a balanced engine.
 
jimybob
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anyway it is a very easy job and shouldnt take you too long.
 
bw
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....only why didnt you have it all when you had the timing belt done.??
Good question. It's a bit complicated, and it's the reason it'll never go back to the local Alfa dealer. They did the variator and timing belt/tensioner about a couple of months ago to try and fix a rattling noise - which turned out to be a drive-belt tensioner (despite me telling them it might be this on the basis of a second opinion from another garage - they were adamant the variator was the problem). In the confusion that followed, which involved me refusing to pay, I didn't spot that their idea of "doing the belts along with the variator" didn't stretch to the balancer shaft one...I suspect it was a case of chinese whispers because I had to re-clarify with the receptionist about 3 times that the car was in for a diagnostic effort, not a routine maintenance job, and they still got it wrong! Anyway, I got a free timing belt/tensioner change and variator in the end, but obviously the balancer shaft belt still needs doing.

So, I thought, if it's not a difficult/highly skilled job and I just need basic tools then I could avoid more garage headaches and just do it myself. I don't think I'd tackle the timing belt, but I'm not so phased by the balancer shaft one.

I just need the belt and idler pulley then? Does anyone know part nos for a 1997 2.0 16v super? At the very least I will get the parts myself and then find another mechanic to do the job.
 
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It is fine to remove that belt, I dont reccomend it but we run the 156 btc alfas without them and I know people that do run without them.

Think about it, the 1.8 doesnt run with them, but I have to say, on a long term basis its a no go!

Regards,

AO
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jimybob
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i agree with AO removing the belts for short term racing purposes is ok(i still cant see the piont though) but ultimatly i wouldnt do it at all...you can instantly notice the difference in smoothness between an engine with and one without the belts fitted.......in conclusion i would say dont do it..

btw the balance belt needs to come off to do the timing belt so why on earth didnt they do it.???
 
jimybob
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the belt is 60812382 53.69

the tensioner/idler is 60620443 30.82
 
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