According to the "BIMMER" magazine:
"Since the S54 engine has the mechanical method of valve actuation, which replaced the hydraulic lifters used on the S52 engine, it requires periodic inspection and clearance adjustments every 15,000 miles, depending how the engine is run".
My S54 engine has always had more valve noise than my S52 engine.
It is my understanding that as the S54 valves start to need to be adjusted, they make even more noise. Is this true?
I have 21K miles on my S54 engine and have not had the valves adjusted.
I am interested in hearing from other S54 owners about when they had their valves adjusted.
The BMW dealer talked me into another year of BMW dealer maintenance for $425.
They said that the "Inspection I" on the S54 engine, which I believe includes a valve adjustment, costs over $900, if done without part of the maintenance.
Comments?
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| Reply » S54 - valve adjustments |
Bimmer was the first to report that (I have that issue too) but the information is wrong.
The first valve service is at Inspection One, second at Inspection Two, etc.
Your valves are noisier than in the S-52 because it has "hydraulic lifters" (so to speak) between the cam lobes and valve stems. The S-54 operates the valves from the cam via a small rocker arm and is metal on metal contact or "solid lifter" actuation.
Yes, they will become noisier as wears allows greater lash.
Remember this truth: noisy valves won't cost you money (but tight ones will)!
My 01 hit Insp I at 21,000 miles and the valves were all found to be within spec; no adjustment (made with varying thickness shims) was needed.
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| Reply » S54 - valve adjustments |
Is there a DIY for the valves? What tools do wee need?
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| Reply » S54 - valve adjustments |
Quote: | Is there a DIY for the valves? What tools do wee need? | Procedure is in the TIS.
Ron has posted the (few and basic) tools required here about three years ago (search function should turn that up).
Most costly aspect of adjusting the valves yourself is to have the correct shim assortment on hand. Alternative would be to tear it down, record the lash (for 24 valves) and then remove/measure the ones out of spec and order the correct replacement shim.
There's about a hundred dollars worth of seals and gaskets required; they are available to the dealer's mechanic as a "kit" but I think we'd have to order all the parts individually. Not a big deal.
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| Reply » S54 - valve adjustments |
Quote: Procedure is in the TIS.
Ron has posted the (few and basic) tools required here about three years ago (search function should turn that up).
Most costly aspect of adjusting the valves yourself is to have the correct shim assortment on hand. Alternative would be to tear it down, record the lash (for 24 valves) and then remove/measure the ones out of spec and order the correct replacement shim.
There's about a hundred dollars worth of seals and gaskets required; they are available to the dealer's mechanic as a "kit" but I think we'd have to order all the parts individually. Not a big deal. | There is a kit for the shims which I never noticed until looking now that gets you 6 each of the 23 different sized shims. 11 34 0 031 525. At the island internet place it is priced at $234.00.
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| Reply » S54 - valve adjustments |
Quote: | There is a kit for the shims which I never noticed until looking now that gets you 6 each of the 23 different sized shims. 11 34 0 031 525. At the island internet place it is priced at $234.00. | That's not bad at all.
Who is Island internet? Contact info please?
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S54 - valve adjustments