Lifters?
11-02-2006, 04:34 PM
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Lifters? i have done changed nothing to the internals of my engine i jsut bought the car it has 7500 miles on it. When im just crusing in a gear at around 2000 with light throttle i can hear what sounds to be coming from the engine a tapping noise. I couldnt really duplicate the probelm in neutral and reving the engine while i was under the hood to see if it was engine specific?? any help i dont want to be tearing up my brand new ls1.
11-02-2006, 09:25 PM
#2
there should be nothing wrong with your internals at 7500 miles....the lifters along with the rest of the valvetrain in these cars.....is NOT quiet....you might want to change your oil to a thicker weight and the noise should quiet down a bit....your car would have drivability problems if your lifters were bad.....make sure your running 93 octane also....
-jacob
-jacob
11-02-2006, 11:43 PM
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I have the same noise, happens around 2000 rpm with light throttle. I think it is valve train noise coming up through the intake. If I hear it and increase the throttle a bit it goes away until I let off again. Maybe the sound resonates in the intake. Maybe the sound reflects back toward the interior with the throttle blade at that position. Might be 2001 f-bod LS1 specific, I've heard other people say similar stuff.
The LS1 feels strong so I don't care.
The LS1 feels strong so I don't care.
11-03-2006, 01:01 PM
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IVE FOUND ANOTHER PERSON FINALLY! i have the same problem my car has 34,000 miles. i use mobil 1 0w40 syn and vpower the problem has not gone away it sounds like its coming from the driver side of the engine... im thinking about ripping apart the heads... people have told me piston slap but its more of a ticking than slap..i dont feel a lack of power but im worried it may cause damage to the engine...anyone else have this problem?
11-03-2006, 01:07 PM
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My car does something similar, but its almost sounds like marbles in a can right at those rpms. Oddly enough it only does it with fresh oil, once the oil gets some miles it goes away. Now this is something i've been stumped on
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11-08-2006, 08:43 AM
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Mine does it even with GC. Seems to do it more so when it's hot. Runs fine really so I don't consider it to be any more of a problem than the sewing machine under my valve covers. 
11-08-2006, 05:54 PM
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check out this thread, i was looking @ it yesterday
https://ls1tech.com/forums/showthrea...1&page=1&pp=20
https://ls1tech.com/forums/showthrea...1&page=1&pp=20
Originally Posted by ChocoTaco369
a few things:
- DO NOT put mobil 1 xW-30 in your engine. would you put an xW-20 in your V8? because a mobil 1 30 weight is a borderline 20 weight. you'll get noise galore, burn more oil and your wear numbers will be through the roof over GC 0W-30. mobil 1 30W's DO NOT belong in an LS1 and i WOULD NOT put them in my car if they were free.
- if you're going to use a mobil 1 oil, i'd advise against 0W-40 - along with all of mobil 1's mainstream oils (5W-30, 10W-30, 0W-40). here's why:
what a lot of people don't know about mobil 1 is that it isn't the same oil it was a few years ago. mobil 1's 15,000 mile formula or whatever they use is REAL mobil 1. they realized that mobil 1 could go pretty long in between changes, so they took it and added a few dollars per quart to the price tag. then, they took their oil and dumbed it down and marketed it as mobil 1 and sold it for the same price. what you are buying now as mainstream mobil 1 oil is actually an inferior downgrade to the historical mobil 1.
if you're going to run mobil 1, don't run a mainstream oil. run mobil 1 5W-40, either the truck and SUV version or the turbo diesel version, either is fine. they are specially made oils and they are designed for trucks with larger clearances (such as our V8 LS1) and protect better against the harsh conditions that trucks see.
let's recap:
- i'm a fan of GC 0W-30. my engine makes a little noise with it but the universal wear numbers with it speak for itself. i intend to send this batch away for analysis.
- i'm a fan of mobil 1 5W-40. i hear great things and i will run it my next oil change and compare wear numbers.
if you can't find mobil 1 5W-40, sadly, you're stuck with 0W-40 (do NOT use a mobil 1 30 weight, please). just know that mobil 1 0W-40 does not protect as well as GC 0W-30...then again, not much does.
- DO NOT put mobil 1 xW-30 in your engine. would you put an xW-20 in your V8? because a mobil 1 30 weight is a borderline 20 weight. you'll get noise galore, burn more oil and your wear numbers will be through the roof over GC 0W-30. mobil 1 30W's DO NOT belong in an LS1 and i WOULD NOT put them in my car if they were free.
- if you're going to use a mobil 1 oil, i'd advise against 0W-40 - along with all of mobil 1's mainstream oils (5W-30, 10W-30, 0W-40). here's why:
what a lot of people don't know about mobil 1 is that it isn't the same oil it was a few years ago. mobil 1's 15,000 mile formula or whatever they use is REAL mobil 1. they realized that mobil 1 could go pretty long in between changes, so they took it and added a few dollars per quart to the price tag. then, they took their oil and dumbed it down and marketed it as mobil 1 and sold it for the same price. what you are buying now as mainstream mobil 1 oil is actually an inferior downgrade to the historical mobil 1.
if you're going to run mobil 1, don't run a mainstream oil. run mobil 1 5W-40, either the truck and SUV version or the turbo diesel version, either is fine. they are specially made oils and they are designed for trucks with larger clearances (such as our V8 LS1) and protect better against the harsh conditions that trucks see.
let's recap:
- i'm a fan of GC 0W-30. my engine makes a little noise with it but the universal wear numbers with it speak for itself. i intend to send this batch away for analysis.
- i'm a fan of mobil 1 5W-40. i hear great things and i will run it my next oil change and compare wear numbers.
if you can't find mobil 1 5W-40, sadly, you're stuck with 0W-40 (do NOT use a mobil 1 30 weight, please). just know that mobil 1 0W-40 does not protect as well as GC 0W-30...then again, not much does.
11-08-2006, 07:44 PM
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I've got the same kind of noise on my 01 C5, but I've noticed it at idle and all the way through 3k. The previous owner had to get a crate engine installed about 4k miles ago so I really doubt that it is a rod or lifter but it's been bothering me for months now. I guess I'll just have to live with it like the rest of you.
11-08-2006, 09:00 PM
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I'd definitely agree with that above copied post. M1 0w40 definitely burned the most out of all the oils i've used. GC has been the best. Only oil burnt now is through the pcv when I don't empty the catch can once every 2 weeks. As for the noise i'm still realy confused as to why it goes away in time and is most prominent directly after an oil change.
11-09-2006, 08:27 PM
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Originally Posted by bigfoot2thefloor
yea im runnin gc now and it still does it i guess ill just run it till i blow it...hmmm excuse to get a bigger motor?
11-12-2006, 08:05 PM
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Originally Posted by O1SS
my car does the same marble noise, its been driving me crazy ! I tried changing the oil samething. I was about to get it checked out so I guess it common.
or should I just have it checked out???