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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 03-10-2012, 08:33 PM   #1
thecarguy
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Ticking from engine after 8th run at autocross last weekend??

So I did my first autocross in my 04 zhp 330i last weekend. In my run group I was able to get 9 runs in and the last two runs when I came in the engine had a very loud ticking. Almost sounds like noisy lifters from a pushrod V8. Drove it home and the sound was gone. Has not repeated this since. Is this just a trait of this motor? What could it have been??

Obviously the engine didn't like something about pushing at the autocross, but then decided all is ok after some normal driving. Very odd. Makes me question the durability of the motor.
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Old 03-10-2012, 09:15 PM   #2
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Vanos? Maybe got the oil a little to hot? Idk something like that.

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Old 03-10-2012, 09:19 PM   #3
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When the M5x get hot they tick. Happened to me every autoX on the e46. Totally normal, let it cool a bit before driving home.
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Old 03-10-2012, 09:27 PM   #4
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Originally Posted by mvrk10256 View Post
When the M5x get hot they tick. Happened to me every autoX on the e46. Totally normal, let it cool a bit before driving home.
Thank you, this is what I was hoping to hear. I feel much better now knowing it's normal under those conditions.
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Old 03-10-2012, 11:13 PM   #5
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Thank you, this is what I was hoping to hear. I feel much better now knowing it's normal under those conditions.
Super normal it happens after every canyon run for the past year
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Old 03-11-2012, 10:12 AM   #6
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Super normal it happens after every canyon run for the past year
Unfortunate it is part of the car, but great to hear nothing is wrong!
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Old 03-11-2012, 10:23 AM   #7
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what weight oil are you using? Sounds to me like you should be using something thicker.
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Old 03-11-2012, 10:34 AM   #8
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Had the same thing happen to me. I believe the oil pump briefly starved during cornering after my 4th run. My oil level was fine but I topped it off to the 'max' on the dipstick & let the engine idle & cool after each run. Hasn't happened since. I might add some additional baffling in the pan one day.
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Old 03-11-2012, 09:03 PM   #9
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what weight oil are you using? Sounds to me like you should be using something thicker.
Mobile 1 0w40 - what is recommended by most.

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Had the same thing happen to me. I believe the oil pump briefly starved during cornering after my 4th run. My oil level was fine but I topped it off to the 'max' on the dipstick & let the engine idle & cool after each run. Hasn't happened since. I might add some additional baffling in the pan one day.
I added about an 1/8 of a quart before I left for the autocross to get the oil to the middle of the has marks. Maybe next time I will put it to the top of the hash marks or at least look into it.
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Old 03-12-2012, 01:28 AM   #10
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its the hydraulic lifters. overfill by a bit and it will stop.
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Old 03-12-2012, 09:18 PM   #11
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its the hydraulic lifters. overfill by a bit and it will stop.
Would that be to the top of the has marks? I don't want to have too much and run into other problems from overfill.
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Old 03-13-2012, 07:50 PM   #12
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I have run into this before with the M5x engines and yes it is from the lifters, but I have found it to be from whipping up the oil in high speed turns. I would look into a crankshaft scraper and possibly a better oil pan baffle. VAC sells the baffles and crank-scrapers.com sells the scrapers.
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Old 03-13-2012, 08:29 PM   #13
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I have run into this before with the M5x engines and yes it is from the lifters, but I have found it to be from whipping up the oil in high speed turns. I would look into a crankshaft scraper and possibly a better oil pan baffle. VAC sells the baffles and crank-scrapers.com sells the scrapers.
Good to know, I'll look into this for sure.
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Old 03-13-2012, 08:36 PM   #14
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I used to run an extra .5+ quart of oil and it always worked for me to eliminate the tick. If you run a low tank of gas, get the M3 fuel pump baffle to reduce the fuel sloshing problems.
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Old 03-13-2012, 10:06 PM   #15
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I followed the build on Vorshlag's website of their trials in autoxing a 330Ci and they mentioned they would also add an extra .5 to 1 whole quart over the full line, and I believe they ran 20w50 which is thicker to quiet those ticks. But after going thru a few oil pumps and motors, they called it quits.
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Old 03-16-2012, 08:01 PM   #16
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I followed the build on Vorshlag's website of their trials in autoxing a 330Ci and they mentioned they would also add an extra .5 to 1 whole quart over the full line, and I believe they ran 20w50 which is thicker to quiet those ticks. But after going thru a few oil pumps and motors, they called it quits.
Did they contribute blowing through the oil pumps and motors on the heavier weight or overfilling by a quart, OR a combo of both?
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Old 03-16-2012, 08:03 PM   #17
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Happened to me at the track. I've been told a few times it's because it got a bit hot.
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Old 03-17-2012, 12:53 AM   #18
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Did they contribute blowing through the oil pumps and motors on the heavier weight or overfilling by a quart, OR a combo of both?
Neither.
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Old 03-17-2012, 08:30 AM   #19
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Might be worth trying castrol 0w-30 or even BMW's 5w-30. Mobil1's 0w-40 tends to sheer down to a 30 weight pretty quickly, so it actually ends up being thinner than most other 30 weights. I know Castrol's is pretty stable. I'm sure there are other good oils from total or lubromoly... But I'm not very familiar with their product lines.

You absolutely should fill to the top of the line. For auto-x, it's sometimes beneficial to go a little above
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Old 03-18-2012, 12:49 AM   #20
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Might be worth trying castrol 0w-30 or even BMW's 5w-30. Mobil1's 0w-40 tends to sheer down to a 30 weight pretty quickly, so it actually ends up being thinner than most other 30 weights. I know Castrol's is pretty stable. I'm sure there are other good oils from total or lubromoly... But I'm not very familiar with their product lines.

You absolutely should fill to the top of the line. For auto-x, it's sometimes beneficial to go a little above
Is top of the line considered ok all the time...for every day driving?
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