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  #11  
Old 08-15-2019, 08:45 AM
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IIRC, the TC Tensioner was re-designed and installed in the M62 engines during the last ~1.5 years of production.

My late production (8-'03) has well over 200k miles on the original guides.

Had Classic BMW visually inspect (flexi-probe digital bore scope) the TCGs that are accessible with the valve covers removed (~80%).
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  #12  
Old 08-15-2019, 01:51 PM
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Timing Chain Tensioner (4.4)

Quote:
Originally Posted by crystalworks View Post
^I believe discussion here is M62 related. Post above yours was concerning a 2002 4.4i..


Agreed, rereading my post my word choice was poor, with the title just being “Timing Chan tensioner (4.4)”, I wanted to call out for any future reader that the N62 has the dual tensioners.

Probably should have said something along the lines of: That’s correct, the M62 has a single tensioner but in the case of the N62, there are two...

All good


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  #13  
Old 08-17-2019, 07:49 PM
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Hi, yes I did buy it trusting the seller said it only needed a tensioner. The mechanic from the Beemer shop came over a couple days ago and looked at it. He first unscrewed the oil filter, we saw what looked like glitter and a splinter of metal fragment settled at the bottom of the filter. Then he looked through the oil spout and said he saw the broken u-guide. Estimated job $3,100. I asked him if I could do the job. He said he'd loan me the tools. Ha! I'm thinking about it. They suggested do the valve stem guides also. So, if I decide to DIY (watch the step-by-step You Tube video on how to do the timing chain etc,), I guess it's best to take the engine apart to see what it actually needs, or do I just replace everything? How much am I looking at spending if I replace all the parts and do the valve stem guides? I need a list of all parts needed. Is there a difference in each year the X5 was made? Was there a better year than 2002? Not that I am going to buy another one, just want to know if there was a better year. I'm not familiar with BMW at all. But, I'm learning, not particularly keen on a BMW. I prefer a Mercedes, less problems, unless you can convince me otherwise. If I do the timing chain/valve stem guides, how long is that going to last before there is another problem? I know nothing about the car, except obviously, someone wasn't too on top of it.
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  #14  
Old 08-17-2019, 07:57 PM
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Quote:
Originally Posted by Purplefade View Post
Agreed, rereading my post my word choice was poor, with the title just being “Timing Chan tensioner (4.4)”, I wanted to call out for any future reader that the N62 has the dual tensioners.

Probably should have said something along the lines of: That’s correct, the M62 has a single tensioner but in the case of the N62, there are two...

All good


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Wait a minute….am I confused? The car I bought is a 2002 X5 4.4i. Which is engine "M62". There is an external tensioner and I thought 2 more tensioners were internal….?
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Old 08-18-2019, 06:10 AM
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Quote:
Originally Posted by mbzgurl View Post
Wait a minute….am I confused? The car I bought is a 2002 X5 4.4i. Which is engine "M62". There is an external tensioner and I thought 2 more tensioners were internal….?
There appears to be one tensioner on main timing chain and a tensioner on each upper VANOS chain.

You can see the main tentioner here (part #19): -

https://www.realoem.com/bmw/enUS/sho...diagId=11_2264

And the two upper chain tensioners here (part #13): -

https://www.realoem.com/bmw/enUS/sho...diagId=11_2264

I've not heard mention of issues with the upper tensioners but somone with an M62 or who is familiar with them can comment on that.

Are you familiar with RealOEM? If not, that's about to change...
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  #16  
Old 08-18-2019, 02:29 PM
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Quote:
Originally Posted by mbzgurl View Post
I'm not familiar with BMW at all. But, I'm learning, not particularly keen on a BMW. I prefer a Mercedes, less problems, unless you can convince me otherwise. If I do the timing chain/valve stem guides, how long is that going to last before there is another problem? I know nothing about the car, except obviously, someone wasn't too on top of it.
That estimate is not unreasonable on guide replacement. As far as fixing that problem and not having anything else come up... I wouldn't bet on it. If the guides (and by relation, oil changes) have been neglected, chances are other things have been too. Cooling system, suspension, front driveshaft splines, etc are all common failure points of the early E53 X5's.

Mercedes and BMW are not dissimilar in their cost of ownership and I wouldn't put ones reliability above the other, but familiarity is a great "warm and fuzzy" when it comes to auto ownership. If you are more comfortable/knowledgeable with the tri star, it might be the way to go. You'll have to make that call.
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  #17  
Old 08-18-2019, 02:54 PM
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If you're a masochist like me, do both!

I went the '03 BMW E53 M62 and '05 MB W211 E320 route for my pain fixes.

Does the trick!
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