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Timing Chain Tensioner (4.4)
BMW redesigned the Timing Chain Tensioner from the original that dates back pre X5 days. The new tensioner is much stronger and has a firmer spring and better overall design. The part is around $50 and simply threads in to the front of your 4.4 on the passenger side. I replaced the one in my 740il (4.4) this year and it was not doing anything helpful. The spring was shot and it was basically just in there doing nothing. If you replace it, you will hear an ugly sound - which is normal - upon the first start up after replacement. The sound is the new tensioner aligning itself. The tensioner should reduce or eliminate rattle when you start the engine and reduce wear to the chain and guides by keeping it tight. If you've never replaced it, I would consider it. It's a small investment that could be the difference in how long your engine lasts. It's always the small things that make big impacts. I just bought one for the X5 today from this forum, and just wanted to share.
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740iLDUKE 01' DINAN 7 S62 Swap - Stratus Grau (1587 produced in SG 440) 02' 4.6is DINAN X5 S2 Supercharged 833/3258 produced | 1/27 Dinan X5's |
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#2
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Good piece of 'headsup' advice Duke.
I found mine to be shot when I had my timing chain guides replaced! I replaced it (amongst a list of other things, with the 'while you've got the engine apart' logic), shame I didnt replace it sooner, perhaps it might have saved me my timing guides, and a few £££'s! |
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Thanks! My hope is that people will changing it because it really does make a huge difference.
All you have to do is remove the airbox/MAF and remove the old and in with the new. Its on the front left, you'll see the head of the tensioner. This is a shot of the 4.4 in my 740il. Side Note: When you do valve cover gaskets, consider having the valve covers powder coated. They will look like mine, and not all flaky. Cost about $100, and will outlast most of us. LOL. Cheers.
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740iLDUKE 01' DINAN 7 S62 Swap - Stratus Grau (1587 produced in SG 440) 02' 4.6is DINAN X5 S2 Supercharged 833/3258 produced | 1/27 Dinan X5's |
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Is there only one tensioner ? Shouldn't there be two, one on each side of the v8?
Where did you buy yours?
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************************** 2002 BMW X5 4.4i Metallic Gray ************************** |
#5
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The one I replaced is Part# 11 31 7 531 813. This one costs $55 and can be had here: at X5 Engine Mechanical & Under Hood Parts
There are other tensioners, but there is NO access to them without tearing down the engine - this is the only one you can replace to help prolong the life of your engine and timing chain guides. Wise investment, IMHO. UPDATED.
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740iLDUKE 01' DINAN 7 S62 Swap - Stratus Grau (1587 produced in SG 440) 02' 4.6is DINAN X5 S2 Supercharged 833/3258 produced | 1/27 Dinan X5's Last edited by 740ilDuke; 11-09-2011 at 08:36 PM. |
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Quote:
Duke, it was in my mind to get the covers blasted when I did my valve cover gaskets a few months back (103k miles). But they didnt look too bad so I didnt bother. Last edited by Isambard; 11-09-2011 at 09:16 PM. |
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My last two E38s had fUGLY valve covers. I rattle canned one set with silver heat paint, and they looked O.K., but powder coat is the way to go. Helps to find a set before doing the job, have them coated and then sell your own, that way there's no down time.
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740iLDUKE 01' DINAN 7 S62 Swap - Stratus Grau (1587 produced in SG 440) 02' 4.6is DINAN X5 S2 Supercharged 833/3258 produced | 1/27 Dinan X5's |
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Thanks! I ordered mine tonight!
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#9
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Guys, if we're talking about the N62 V8, it does have two timing chain tensioners one on the lower right side of the block (pass side in LHD) and one on the upper left side of the intake manifold (driver side in LHD).
Lower right - Part #13 https://www.realoem.com/bmw/enUS/sho...diagId=11_3267 FCPEuro: https://www.fcpeuro.com/products/bmw...-11317504440oe Upper left - Part #12 https://www.realoem.com/bmw/enUS/sho...diagId=11_3268 FCPEuro: https://www.fcpeuro.com/products/bmw...-11311439552oe |
#10
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^I believe discussion here is M62 related. Post above yours was concerning a 2002 4.4i.
mbzgurl... It sounds like time for a tensioner has passed and it is time for that engine to get the guides themselves. Fairly costly expense if you aren't doing the work yourself. Might steer clear of that particular X5. Edit: mbzgurl, reading is apparently not my strong suit. You already bought the truck. In that case, probably going to be an expensive trip to the indy mechanic. I think the job runs about $2000 +/-. But, you could have them drop the lower oil pan and inspect the guides. If everything is intact put a new tensioner on it and cross your fingers. Best of luck.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles) 2006 X5 4.8is Build 11/05 Maintenance/Build Log Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles) 2010 X5 35d Build 02/10 Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles) Last edited by crystalworks; 08-15-2019 at 09:39 AM. |
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