4.8is E53 Changing TimingChain/ValveStemSeals/AnternatorGasket
In about one month i wanna change timing chain + valve stem seals + alternator bracket gasket on my 4.8is E53, but untill then i wanna buy everything i need.
I wanna know if i need to change something else, likes O-ring, gaskets, seals, screws ? Have to be someone in here that know or have a list with what to change apart from that 3. Thanks in advance !!! |
4.8is E53 Changing TimingChain/ValveStemSeals/AnternatorGasket
Any reason you want to do the chains? That involves removing a lot components, one time use bolts and might as well do the coolant transfer pipe while at it not to mention the additional tools you will need to get the timing set back.
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The reason is because i travel twice a year, 4000miles each, and i dont know if the previous owner change it...the car have 180k miles....and i can get the tools from ebay, for chain.
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Several vendors offer timing chain kits that will include all that you will need. ECS tuning offers 3 versions. Be sure to buy a good tool to keep timing locked in place. Some have had problems going cheap. There are a couple of sources to rent a good quality tool. There are some good DIY step by step options with pictures, tips and help with organization on vendor websites if you are interested. I have read many posts and threads here that might also be helpful to you. They should be easy to find using the forum search function.
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Why change the timing chain on an N62? That isn't a common issue IIRC.
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As for what you may want to replace while doing the VSS and alternator bracket seal, you may want to consider, obviously, the upper timing cover gaskets, vacuum pump seals and lower oil pan gasket. I would also take the opportunity to do the coolant pipe seal/pipe replacement as someone has already suggested. If applicable, I would also recommend buying the valve stem seal toolkit rather than renting it. There's an alternative one that does the same job as the very expensive Aga toolkit and costs the same as what you'd spend on renting the Aga one. You can therefore take your time to do the job correctly in one shot without rushing through (and not risk making mistakes). https://www.germanspecialtytools.com...d-n62tu-engine |
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Thanks for your reply buddy. I will buy a good one...i hope 😜 thats why i write here, maybe is someone hwre to help and give me a link to a good tools set. But my big question was if i need to change somethine else apart of that 3. |
X5Only, so you say on N62 engine dont need to change the timing chain ?
Then why everyone ask when ur selling one: TIMING CHAIN DONE ? |
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Yea not doing the chain will save you hours of labor, just not worth it unless something is wrong. Nothing you are doing takes you even halfway there. Might as well do the oil pan gasket if you are set on doing it.
Also it will be easier to pull the motor out completely and refresh all. |
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Deciding what else to replace as preventative maintenance when you are doing any repair is different based on mileage of other parts, budget and how long you plan to keep your X5, whether or not it has to be available as a daily driver. It's true that the timing chain is not a chronic problem with your engine. I assume you were having a timing chain problem. Do you have symptoms of problems with timing chain or bad valve seals? |
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I dont have any problems with timing chain, just like everyone said on almoust every group on facebook, IF YOU DIDNT REPLACE IT, HAVE TO DO IT.
My problem is that i have some oil on my alternator, last month start to charge only 12.6v-13.4v, and i decided to buy a new one, maybe because was old, or maybe because the oil...i dont know, so i think i need to change the bracket gasket. And about the valve stem seals, after i idle it for 5-6mins and rev the car, came smoke on exhaust...and i was thinking need to change them...but 2 days ago someone told me to check the ccv valve, and when i check them (i think the previous owner change them) didnt press hard on the black caps, because that black caps have 6 clips, and one stays only in 3 clips and the other one stays in 5 clips...so next time before i drive the car i will check if still oil under them (i drive the car only sundays). And when i change the alternator, i find some antifreeze between the engine and gearbox...from where you think can come ? |
Please take FB mechanical advise with a grain of salt...
The alternator gasket is next to the alternator so it wouldn't cover it with oil, at least from the top. Your valve cover gasket is what is leaking and dripping on top of the alternator probably. All your suspension and axle would be covered in oil. I would replace the ccv caps if your tabs are broken. ATF gets mixed with coolant at the heat exchanger if you have a leak there, it's on the front right bottom of radiator (it's a silver box). |
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Before you change anything to correct a coolant leak or oil leak I suggest you clean the engine and then work from the bottom of the engine upward using a strong small beam flashlight to trace the leak from the exit point to the source. Coolant and oil leaks sources can be deceiving. Never fun to replace something and find the problem was elsewhere.
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More pics here: https://xoutpost.com/bmw-sav-forums/...me-wallet.html https://xoutpost.com/bmw-sav-forums/...-question.html It sounds like you have a huge project in your hands, but fortunately they're doable right in your garage on your back. I did all of them myself -alternator bracket, valve stem seals and coolant pipe. I'd recommend doing the water pump, radiator, expansion tank and the various water hoses. Believe me, once one component of the cooling system starts breaking, the others are right on its heels, so better to tackle them in one shot. And since you'll be doing the valve stem seals, you now get a chance to clean the intake manifold which is required to be removed to change the valley pan gasket. And because you'll change the valve cover gaskets (and the associated seals) and upper timing case cover gaskets while replacing the valve stem seals, you will fix the oil leak on top of the alternator. That leak is definitely from the upper timing cover on the driver side. Look carefully and you will see the leak. All the best:D |
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Also, pray that the coolant leak is not coming from the bottom of the bell housing, in which case it would be the back coolant cover on the N62 engine that's leaking, accessible only by removing the transmission - part #5 End cover, rear # 11147504376
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Thats why i ask if anyone have the same leak like me ...between engine and gearbox, but the leak is coming from the top, not at the bottom to be sure is that REAR END COVER
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https://www.youtube.com/watch?v=F_gjFZJbAoE |
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any update on this project?
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