engine noise question
Jun 28, 2008 | 08:52 PM
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From: Clovis CA
engine noise question
How do you know if your motor has engine knock from rods a main barring or if it is just valve train noise
Jun 28, 2008 | 09:36 PM
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From: Rocky Mount Virginia
Valve train noise will sound like a faint typewriter. A rod noise sounds like tapping a wooden table with your knuckle.
Jun 28, 2008 | 09:43 PM
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the car has a large cam long tubes with no cats and a ghl cat back it loud. but what i hear is a tapping at idle not very load you really have to listen for it and some rattle noise when you rev the car up drained oil ran a magnet through the rag the oil was drained on and could not find any metal at all but the rattle is getting loader and you still have to listen for the tapping.
Jun 28, 2008 | 09:52 PM
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From: Rocky Mount Virginia
Were the lifters changed when the cam was installed?
Jun 28, 2008 | 09:54 PM
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No the vette only 20,000 on it so we used the stock lifters from the car the car is a 02 z06
Jun 28, 2008 | 09:55 PM
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From: Rocky Mount Virginia
Any specs on the cam? May be too large for the stock lifters/rods.
Jun 28, 2008 | 09:56 PM
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I do notice that the oil preasure has changed used to run at 37 psi and now it will gas low as 32 psi. Oil pump is stock.
Jun 28, 2008 | 09:57 PM
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Cam is a 230 230 591 591on a 114.
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Jun 28, 2008 | 09:59 PM
Le Mans Master
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From: Rocky Mount Virginia
The cam could be wearing out that stock valvetrain.
Jun 28, 2008 | 10:10 PM
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has after market heads with springs good to .650 lift and aftermarket push rods. Also noise is only preasent when the engine is warm not on start up.
Jun 28, 2008 | 10:16 PM
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From: Rocky Mount Virginia
Good, then you have beefed up the valvetrain. Some ticking will be normal.
Jun 28, 2008 | 10:31 PM
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50 psi in that range
Jun 28, 2008 | 10:35 PM
Le Mans Master
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From: Rocky Mount Virginia
I really think you're fine. Oil pressure is good. Unless it really starts to get loud or you get some popping or misfiring, you're good to go.
V
Jun 29, 2008 | 04:08 PM
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From: Clovis CA
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Has any one with head and cam had a problem with using stock lifters going out and making a lot of noise.
