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YOUR RESEARCH996 lifter sound after oil change
Leading reported evidence
Use directlift's clearance calculator
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I'll be stacking my 996 and an 09 Saleen and used DirectLift's clearance calculator.
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It's expensive, but I use Driven XP9 (10W40) on the track.
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Suggestion
DT-40 is highly recommended by the engine builders like Jake Raby.
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Hi!
After oil change I noticed sound coming from the bottom of the engine. I have heard and read a lot about bore scoring and other terrifying stories so I am a little worried about my 996.
Some fun facts:
Sound goes on cold
Sound disappears or almost inaudible when warm
Sound is only on idle
In the 35s sound disappears for short after reving up
Milage: about 45 000 miles
Previous oil: Mobile 1 5w50
Current one: Shell Racing 10w60
Current drivers behaviour
: extremly cautious about oil pressure and temperature
I did not hear this sound having old oil.
Please help and soothe my soul
Youtube movie below
https://youtu.be/8D0DYZlwRHY
Hmmm...change oil brand and type and you have a sound that wasn't there before. What does that tell you? Why are you using a racing oil? Racing oil is not formulated for long term use. Do over and either go back to the Mobil 1 or something else. Mobil 1 0W-40 is what is recommended by most. DT-40 is highly recommended by the engine builders like Jake Raby. I use a Liqui-Moly and my engine is loving it. @146K miles 99 C2
To be fair and honest, I was always a big proponent of Mobil 1 and the 0W-40. I switched to the 5W-40 because of my operating hours and mileage. I consume no oil and my engine actually sounds better.
I was adviced to change it for higher one due to plans for taking part in couple track days.
Having higher temp (reaching right side of 0 in 180) with 5w50 my oil pressure was about 1 with current 10w60 it is above 1.5. Correct me if I am wrong but is it preventing bore scoring better under such circumstances.
Car runs normal no oil or coolant leaks.
It seems, as was adviced to go back to lower one
Agree with the above get that oil out. I hear some tapping but hard to locate from your video. If you didn't hear that before the oil change refer to my first statement. If that was a cold start don't be free reving it like that. In fact keep it under 3000rpm while driving until temp is up above 160f and don't free rev it at all... regardless of engine temperature IMHO.
and don't come back and tell us you love to dump the clutch at 6,000 rpm
Whomever gave you the advice to run a 10W-60 racing oil is an idiot. You've got a lot more issues to address to run "track days". Have you upgraded your oil pressure relief valve to the latest upgrade? BTW, the oil pressure dash gauge is often wrong. Have you replaced your oil pressure switch lately?
None of these things
I have signed up to local Porsche club and I just wanted to make my car ready for couple rounds on track as some spots are at circuts
Thanks for advices, I will change oil shortly from 10w60 to softer one and let see!
It seems that the best is the enemy of the good
Watch out for those long right hand sweeper turns. Overwhelm your AOS and you are sunk. Hydrolock your engine, seize your pistons and bust a rod. You need a lot more prep for doing true track days than an oil change. Deep sump, X51 baffles, 997 oil pickup tubes, UAOS....the list goes on.
It�s a Direct Lift 4-post style. Ceiling height is 114.5� if I remember correctly. I�ve got a spare 4� above the top car....the pic is a little deceiving.
Thanks for the info! I've been looking into the DirectLift Pro Park 8S. My ceiling is 9'6" toward the back and 10'1" closer to the garage doors. I'll be stacking my 996 and an 09 Saleen and used DirectLift's clearance calculator. It appears I'll need to have the 996 under the Saleen above for it to work (with a few inches to spare). I could go the other way around, but at the 56" lock setting, it would be a tight fit underneath..
Another video on idling. Car was not driven for one day. Sound gets louder, but its location is still uknown, as you mentioned, oil replacement is recommended as this sound was not there before.
You Tube
As adviced, I would go with 0W40 or 5W40.
You should only be using 10w-60 if your engine is modified and you are tracking the car heavily and plan on being high in the revs all day long. I have a E92 M3 and the 10w-60 takes a long time to warm up, I wouldn't recommend it for an engine that doesn't call for it from the factory. Pair 5w-40 with Liquimoly's Ceratec and be amazed.
It's expensive, but I use Driven XP9 (10W40) on the track. It is a low foaming oil. I also have the LN Engineering 2 quart deep sump kit (with skid plate). The kit includes the X51 baffle and 997 oil return tubes. It's not hard to install. If you search on-line, you can find XP9 by the case for a reasonable price.
I did a quick search and Walmart has it for $161.89 per case (12 quarts).
My 996 sounded like that before I had the tensioner pads replaced. But I agree, the oil is probably making it much worse. Your tensioners are probably getting very little oil with that 10w in there. There�s a reason why M96 owners only run 0w or 5w oil. Smaller tolerances and Variocam/+ were designed for it.
That's not lifters.
The lifters in these engines will create misfires before they make noise due to lash.
Your next step is to pull the sump plate, pull the spark plugs, and confirm that you do NOT have bore scoring, by performing a bore scope evaluation from both sides of the cylinder.
Part 4 of my "focus on bore scoring" video series shows you how to do this for 40 bucks, yourself.
When I hear these noises, I don't waste any time. I go straight to the evaluation. If it passes, then you can take things a simpler route.
People tend not to go straight to the worst aspect, and that wastes time, money, and effort.
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