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[Taxi_Driver]

Well i know it doesnt help......but i spose they thought the chain is never gonna be replaced....so it doesnt matter if its difficult to get to......

Head swap it is then  

Surely the chain is a friggin consumable?  Mind you, having read up on it a lot recently, seeing as BMW heads are incredibly prone to cracking, maybe they expect the chain to outlive the head.

Muppets  

Mercs the same.....tho dunno how easy to replace.....but in for life of engine....apparently...according to merc.

Probably, in BMW's case, life of engine means lenght of warranty.  So 1yr/12k then.

Thats seems a bit high for a year  

Even tho both German engines/cars......mercs and bmw's i mean.....

Merc do have the balls to give you a free 30 years breakdown recovery.....altho the nearest merc dealer to you does only recover it to their garage.....and usually turn up with a 'covered' breakdown truck......so it carnt been seen a merc has broken down  

[smoothomega]

It could be worse, it could be French  :-?

[TheBoy]

It could be worse, it could be French  :-?

Even the French designers, who do come up with the odd corker, are not so stupid as to have to take off the head to change a consumer part  

[smoothomega]

How about Jaguar? Dad had a mk1 xj6, and i think this applies to the later models too. To change the rear hand brake pads the whole rear subframe had to be dropped to gain access !!!!!!!!!!!!!!! All for some £12 pads!!!

[TheBoy]

How about Jaguar? Dad had a mk1 xj6, and i think this applies to the later models too. To change the rear hand brake pads the whole rear subframe had to be dropped to gain access !!!!!!!!!!!!!!! All for some £12 pads!!!

Current jags are just expensive mondeos

[VXL V6]

S Types getting cheap, like the body style but not keen on the interior. Can;t get on with X Types, too cramped for my 6ft+ frame.

[sassanach]

to change the chain what you are supposed to do is split it, join the new chain to it with a  split  link and feed it through the engine using the old chain to pull it through.

[Paul M]

I'm most glad my BMW's V8 engine has a duplex chain, I've never heard of one of these failing and there are a lot of them in old 5 and 7 series models that have done well over 200,000 miles -- you'll even find a few that are going on 400,000  . I can't speak for the tractor engines or the newer ones; I read somewhere that they switched to simplex chains so I wouldn't be surprised if they no longer outlive the engine thanks to new Bangle-era BMW's cost-cutting measures :-/

I'm certainly more worried about my Omega's crappy belt setup, where even after GM halved the service interval from 80,000 miles to 40,000 miles, there are still reported cases where the tensioners have failed before the new 40,000 mile limit resulting in a wrecked head! Timing belts aren't necessarily a bad thing, but it seems the GM design is a very poor example of such. These things need changed often enough that they should've been designed so that you can do one in 30 minutes!

[smoothomega]

Aint it odd tht chains have been aroud for years with very few problems, then along come belts with all their problems, only for the boffins to go back to chains in receint years. We are a clever bunch arn't we  :-/

[TheBoy]

Aint it odd tht chains have been aroud for years with very few problems, then along come belts with all their problems, only for the boffins to go back to chains in receint years. We are a clever bunch arn't we  :-/

I'd rather had a belt.

[TheBoy]

to change the chain what you are supposed to do is split it, join the new chain to it with a  split  link and feed it through the engine using the old chain to pull it through.

To remove chain cover (required - there are 2 chains) is what needs head and sump off.

[familyman]

Aint it odd tht chains have been aroud for years with very few problems, then along come belts with all their problems, only for the boffins to go back to chains in receint years. We are a clever bunch arn't we  :-/

I'd rather had a belt.

Better speak to the lease companies my friend. They damand ( and being a manufacturers biggest customer ) cheaper servicing , Hence labour times for servicing have come down to silly times ( how can you properly check a car in 0.6  hrs aprox 1/2 hour  ) and cam belts are being replaced slowly back to chains with no maintainance costs involved.  Ford are trying to  keep belts goin with 100,000 or 10 year changes but alas with company car drivers going past this with ease chains are back!

[TheBoy]

Aint it odd tht chains have been aroud for years with very few problems, then along come belts with all their problems, only for the boffins to go back to chains in receint years. We are a clever bunch arn't we  :-/

I'd rather had a belt.

Better speak to the lease companies my friend. They damand ( and being a manufacturers biggest customer ) cheaper servicing , Hence labour times for servicing have come down to silly times ( how can you properly check a car in 0.6  hrs aprox 1/2 hour  ) and cam belts are being replaced slowly back to chains with no maintainance costs involved.  Ford are trying to  keep belts goin with 100,000 or 10 year changes but alas with company car drivers going past this with ease chains are back!

Agreed - who cares what needs doing after 3/4yrs.  Hence 20k service intevals etc.  

[Omegatoy]

think the cover will come off without taking head off may have to loosen sump but thats easy enough, the picture i showed you doesent have the head off and yet the timing over is off,  

[Taxi_Driver]

think the cover will come off without taking head off may have to loosen sump but thats easy enough, the picture i showed you doesent have the head off and yet the timing over is off,  

Not that i know......but Omegatoy is probably correct.....and personally i would believe him from his knowledgeable posts  

TB... its probably TIS going way overboard.....TIS says to remove the aux belt on a 2.2 to change cam sensor.....but it can be done with doing this.....