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Noisy Lifters?? LS1

Berlinarator

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Hey Everyone,

My car has recently developed a tapping noise from the engine, I've tried to do a bit of research but most of the posts here concern the Alloytec V6. The car is a 11/05 VZ SSZ 5.7L auto.

Oil was last changed at 41k in June, and before making a trip from Brisbane to Canberra I got the oil changed on Friday (Magnatec - always used in this car) at 46k. All this time, the tap noise wasn't present. I filled up with BP Ultimate at Tenterfield, and it wasn't until I stopped at Maitland that I noticed the noise. Anyway I got to Sydney and filled up with BP 95 instead, and got back to Canberra but the noise is still present. Only happens at idle, and only when the engine is warm. Seems to be slightly louder when it's in Drive. I found a video on YouTube which sounds pretty similar: YouTube - noisy lifters

Mine doesn't make the tap at start up though. Only when warm. I read through the comments on that page but it doesn't really solve anything. Does anyone have any ideas? Car has never been flogged at all. In the last 5,000km or so it wouldn't have been over 3,000rpm. Thanks.
 

soop

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Mines abit the same mate, I've no real idea how to fix it. Though I personally don't consider it a dramatic issue. Annoying though.
 

karlos

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I think the problem lies in the 10w40 of the Magnatec.Try a 10w60 and see how it go's,Penrites Extra 10 in 10w60 is good to use and doesnt kill the wallet if doing 5000km oil changes regularly.

Not making the tap on start up to me shows the Magnatec at operating temp is starting to break down,this is where the 60 may fix your issue.Our climate is not suited to the oils Holden/Ford ect recommend for us,especially in Summer.

Have a look on Mainlubes website for some good info on what I have recommended in more detail/results.His oil is the ducks guts but too expensive for me to run in my cars,around $40 a litre.Steve recommends Castrol Edge 10w60 if one cant afford his stuff,the tests he has done back this up.A good read that site.
 

Boonz

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60 weight oil...... is fkin thick... have a look at how oil viscosity works before you start recommending thicker oil for an engine that isnt designed to run it...

id rather lifter tick that bearing knock....
 

soop

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They're recommended that 10-40 from new. After a 100k wear makes the tollerances go to the ****. That''s why it ticks in the first place. And thats why people run custard in 5ltrs.
 

Boonz

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exactly.... but putting 60 weight oil in your engine, will fix one problem, and make two more...
one being excessive oil consumption and two premature bearing failure ! try a 50 weight before jumping to 60.... if the noise bothers you enough
 

karlos

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LOL,10w40 is the same thickness as 10w60 on cold startup.The extra 20 on the pointy end is not start up weight but extra tollerance to breakdown at higher temps ect.

I await your apology...............
 
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karlos

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exactly.... but putting 60 weight oil in your engine, will fix one problem, and make two more...
one being excessive oil consumption and two premature bearing failure ! try a 50 weight before jumping to 60.... if the noise bothers you enough

Can you please have a look at the MAINLUBE website and educate yourself a little more.
 

Boonz

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you obviosuly dont know how engine parts work karlos... but if you wanna run that oil, fine by me, im not the one replacing your motor earlier than expected.

lifter noise is caused by the lifter itself OR low oil pressure, and if the lifters are noisy, replace them.... putting thicker oil in doesnt fix the problem, it makes it un noticable to the ear, but the lifter is still at fault.
 
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