Re: sprockets-chain

[Ferdinando Di Matteo <aroctech@domain.elided>]

Dear Anthony,  the chain may have stretched a bit but not enough to let 
it slap.  To tell if a chain is worn too much hold it in your hand 
(after you remove it, of course) alfa-about half way on edge.  A new 
chain will not droop.  For the lower chain the test is easy.  With the 
cam cover off so you can se he upper chain, put the gear lever in 1 st 
and either rotate the engine via the crank pulley nut or push he car by 
a helper or a strong wife.  We want to see the cams move even with a 
fraction of an inch lower chain movement.  Any slack will not allow the 
lower  chain to move the cams.  I hope I made myself understood, let me 
know if you have any questions.  Fred Di Matteo


On Wednesday, December 4, 2002, at 03:30  PM, White Anthony wrote:


> Thanks to all who replied to my timing chain queries.
>
> Fred, I'd like to take you up on your offer -- how do I tell whether 
> my chains are worn too much?  I've been assuming they are because I 
> can't adjust the rattle out of them.  I've made several attempts at 
> adjusting, and it improves temporarily before the rattle returns.  
> Also had my local Alfa shop do it once, as I thought I couldn't be 
> getting it right.  Their job also worked temporarily, but then the 
> rattle returned.
>
> I have complete receipts for the car for the last fifteen years.  I 
> know the upper timing chain was replaced as part of a full engine 
> rebuild 50k miles ago (at only 75k miles).  This doesn't seem like a 
> long time for a timing chain, but I'm unsure what else to do.  I was 
> planning to replace the tensioner spring as well.
>
> Kind regards,
> Anthony.
> .
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