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timing chain replacement

BMW forum 3 series car: E21, E30, E36, E46, E90, E91, E92, E93, F30, F31, F34, F35

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timing chain replacement

Postby nurquhart73 » Sat, 24 Sep 2011 20:04:15 UTC

Hi new to the site can anyone help please, wondering what kind of job it is to replace timing chain on my 2002 bmw 316 e46,any help much appreciated
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Re: timing chain replacement

Postby paulcornwall » Sun, 25 Sep 2011 14:02:52 UTC

Timing chains are generally not replaced, unlike cam belts. What concern do you have over your existing timing chain?
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Re: timing chain replacement

Postby sg_frost » Sun, 25 Sep 2011 16:51:20 UTC

Nightmare job, but like it says above, why would you want to?
Full time BMW nut
E46 320d Touring, silver Written off
E46 320d Touring, blue sold
Running a E91 325d M sport touring, silver
Rally a E36 318ti compact in Dakar yellow, M42 engine, 320d crank, M3 pistons, 2.1Litre of fun,now sold :(
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timing chain replacement

Postby BMWcare » Sun, 25 Sep 2011 21:04:14 UTC

nurquhart73 wrote:Hi new to the site can anyone help please, wondering what kind of job it is to replace timing chain on my 2002 bmw 316 e46,any help much appreciated

If it's N42 (2.0) engine rather than M43TU (1.9) then be very careful!

They are a biatch to do, require a lot of special tools and it's usually only the start of issues.

Chain guides break/snap causing noise and 'hopped chain syndrome'!!
There's a modified tensioner available too. Main Vanos units fail too; usually on exhaust side which cost a pretty penny too...

Now, I was gonna mention the intermediate shafts with poor service history and the valvetronic ecu which can just 'die' but I think you'll be frightened enough by now!!

Kind Regards,
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Re: timing chain replacement

Postby nurquhart73 » Wed, 28 Sep 2011 21:23:33 UTC

Hi thanks for ur replies mine is the 1800 engine,original fault was noise from engine(timing chain)area at 3000 rpm and slight misfire,switch of and back on noise gone and misfire gone until revved over 3000 rpm again,replace tensioner with new modified one,now lumpy running at idle and noise from timing chain area,suspect chain streached or guides broken.Now thinking cheaper to get replacement engine,but proving to bet quite expensive,over a grand.Any cheap engines out there.logistics a nightmare as i live 20 miles north of Inverness in the highlands of scotland and couriers charge extra,they think it an island.
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Re: timing chain replacement

Postby slim_boy_fat » Thu, 29 Sep 2011 07:35:21 UTC

I live a further 20 miles north of you, so know what you mean about couriers and all the extra supplements we're forced to pay - i generally refure to deal with online companies who charge the extra despite quoting for "UK mainland"... :twisted:

Have a poke about on here CLICKY for instructions on replacing the chain - it's a great reference source site and worth bookmarking. :wink:

Have you had a word with Jimmy Cruickshank in Inverness - a great guy specialising in BMWs and very knowledgeable.
Never underestimate the power of thrawn.
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Re: timing chain replacement

Postby nurquhart73 » Sat, 01 Oct 2011 21:45:12 UTC

Hi again if i replace engine is there anything that needs to be programed by bmw after fitting replacement engine?
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