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YOUR RESEARCHFirst Drive of my 4.0 996
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Clean /rebuilt the lifters
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I completely dismantled that engine as well and cleaned/rebuilt the lifters.
Leading evidence: 'Clean /rebuilt the lifters' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean /rebuilt the lifters' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion
I have a supercharged e30 with an S50 in it, uses the exact same exhaust lifter.
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Howdy,
It's been a few weeks since the "First Start" video and I'm sure you're all wondering if the engine blew up or is it running. Welp, see for yourself:
You Tube
Thanks! I�m not sure, tbh, as it sounded like piston slap or lifters to me. Just got back from a dry ice cleaning and she now looks AND sounds AWESOME.
Luckily, I expected it. You�re right though it is a little unnerving to hear those parts slapping together like that. Perhaps some of the true mechanics could chime in on what we heard in my video? For a lack of a better term, it sounded like things where �bedding in�.
i hope it is just breaking in.
I upgraded my old M3 with cams, repaired the vanos, and the first crank a lifter stuck and bent a bunch of valves. I contemplated setting everything on fire.
you seem more level headed.
I'd say nothing to worry about. Lifters do take some time to fully "pump" up.
I have a supercharged e30 with an S50 in it, uses the exact same exhaust lifter. I completely dismantled that engine as well and cleaned/rebuilt the lifters. If I don't drive it for a while, it will tick like that anywhere between 5-60 seconds. I drive my new 4.0 almost daily, so it doesn't happen in that. I also rebuilt the lifters when it was apart.
This is the official BMW TSB procedure!!
Lifter bleed procedure:
BMW SIB 11.09.07
Metallic Ticking noise coming from engine? – BMW 3-Series (E90 E92) Forum – E90Post.com
SI B 11 09 07 Engine,January 2009
This Service Information bulletin supersedes SI 11 09 07 dated April 2008.
SUBJECT:Intermittent Hydraulic Valve Adjuster (HVA): “Ticking” or “Rattling” Noises
MODEL: All E82, E83, E85, E86, E88, E60, E61, E70, E90, E91, E92, and E93 with the N51, N52 or N52K engines
SITUATION: An occasional ticking or rattling noise from the HVA elements may occur during cold engine starts or frequent short-distance driving.
CAUSE: In these situations, the HVA elements may not yet have been supplied with sufficient amounts of air-free oil. This condition will not cause any damage to the engine, and usually remedies itself with a longer driving distance or operating times at full operating temperature.
CORRECTION: In the event of a customer complaint, please perform the following the HVA bleeding procedure.
PROCEDURE
Important notes:
The bleed time may take anywhere from between two minutes and (in rare cases) to a maximum of 30 minutes. This procedure is to be performed on a level surface with the vehicle stationary, and in a properly ventilated area.
Procedure preconditions:
Engine oil level correct – neither underfilled nor overfilled
Engine running at operating temperature
1.) Bring the engine up to an operating speed (no load) of 2000-3000 rpm and maintain this condition for three minutes (bleeding procedure).
Let the engine idle for 15-30 seconds and reevaluate whether the noise is still present or not.
2.) Engine quiet – procedure is finished.
3.) Engine noise is still present – repeat the procedure; perform steps #1 and #2 up to a maximum of 5 times.
4.) Only if the noise remains after performing the bleeding procedure 5 times: proceed by performing the procedure for a final time, also at an engine operating speed of 2000-3000 rpm, but for a total time duration of 15 minutes.
WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.
That's the same procedure to stop lifter ticking in VW VR6's: get oil hot, rev engine in neutral to 3000 RPM for 2 minutes. It does work, at least on the VR6.
