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Old 10-19-2002, 00:25   #1 (permalink)
96 EF Futura
 
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Replacing Timing Chain

Has anyone had the timing chain replaced on their EA?
Just want to get a rough idea of how much it would cost etc

Mines fairly noisy now and I would prefer to replace it before I start doing any performance mods to the engine.

Any experiences welcome....

I am mechanically minded but have been told that replacing the timing chain on the 3.9/4.0 engines is a pain in the ass.
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Old 10-19-2002, 00:30   #2 (permalink)
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Some vehicles have a joining link in the chains, or at least the new ones sometimes do. If they do you can just break the old chain by prying the side off a link, hooking the new chain to it and feeding it around as someone turns the motor over with a spanner or somethin. Bit tricky but it can be done. Just keep both chains constantly meshed on the top sprocket or you will loose timing and tensioners. After saying all this, how do the tensioners tend to last guys, are they a problem?
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Old 10-19-2002, 02:49   #3 (permalink)
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The plastic tensioner and damper break more often than the chains do and I would be checking them first; take the rocker cover off and investigate with a torch/bright light.
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Old 10-20-2002, 01:42   #4 (permalink)
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I've used that old trick a couple of times but I was told with the EA engines the bottom dampers were a pain in the ass and you are better off pulling it apart.

Well I am going to get a few quotes from my dads mates and if its feasable I will just book it in....if its far too expensive I will have a crack at it.
Going by MustangX's previous post it sounds like it wouldnt be that hard other than the bottom damper.
Cheers guys
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Old 10-20-2002, 02:37   #5 (permalink)
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I can guarantee you a 70% chance your bottom dampner is broken off, and a 70% chance your side one is broken.

The bottom ones break off very easily and usually fall into your sump, so far 2 out of 3 EA motors I have seen had their bottom dampner broken, and 2 out of 2 EA motors i have seen with their timing covers off had the side ones broken(side one isn't so bad as it can't move anywhere, so still puts some pressure on the chain, the bottom one's fall into the sump)

I wonder how long these dampners actually last before they break as they are made out of a flimsy plastic material. You might want to get yours replaced while you do the chain as they are cheap to buy, but then again they'll probably end up breaking again in a few months.
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Old 10-20-2002, 03:00   #6 (permalink)
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i got my chain, tensioners and guides replaced at the local mechanic. cost me $400. after hearing all the stories of how difficult it would be i left it well alone, didnt want to screw with that sort of thing... :)

the engine had 340,000KM on it at this point...
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Old 10-20-2002, 18:27   #7 (permalink)
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bummer

mines at 320000km sounds like i might need to have a look at mine soon. What noises are evident when the guides break, are there any noises in particular?
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Old 10-21-2002, 02:33   #8 (permalink)
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Gidday,
My 2 cents worth.
I replaced my timing chain and guides last week when I put the new head, cam, and water pump in.
Timing chain kit with guides, chain and gaskets was $75.
BUT, if you want to replace the bottom guide you have to drop the sump, it will not go on without doing this, boy did we try! My motor did not have a bottom guide in it, and neither did the motor I bought last week to get the head off. I spoke to lots of people about this and was told it seems a lot of mechanics don't put the bottom guide in. Now this is where it gets a little confusing I guess. The timing cover will not come off unless either you take the head off or the sump off. As I had the head off it was relatively easy to take the timing cover off. As I had to go to Brisbane on the week end and time was a bit short, I elected not to take the sump off and to leave the bottom guide out, I'll put it in the new motor I'm building up. Anyway, it's as quiet as, and I can't believe the difference. I guess the new head and XR6 cam helped.
If you do it yourself just make really sure you line up the timing marks before you take anything off.
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Old 10-21-2002, 16:05   #9 (permalink)
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I've just had a quick read of the falcon repair manual and I think I will attack it myself.
Says the best way is to lower the sump anyway and be careful not to drop the bottom guide into the sump.
apparently it only slides onto little "ribs" cast into the timing cover ( stupid design if you ask me )
so after my transmission is replaced I will buy a timing chain set ( where did you get yours for $75? ) and have a crack at it.

Also I changed my oil a few weeks ago and now when the engine is cold the lash adjusters tick like hell....should I try a different grade oil? Im using castrol 20-50 but have been told that Sheel helix "blue" is great for these engines ( I think its about 25-75 )

I will also look into getting them shimmed or simply rebuilt, but I heard that if you add deisel to the oil and run for 15 minutes, drain, then do any oil/filter change it should help clean some of the gum deposits out of the adjusters....is this myth?
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Old 10-21-2002, 18:31   #10 (permalink)
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Gidday,
My local spares shop (Cyril Harris Auto Spares)has timing chain kits, that's chain, guides, tensioner, seal and gaskets for $75. He's a Ford nut and certainly has the best price around for Ford parts. (Sounds like an add :) )
Cheers
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