Cam wear? Engine was knocking.
#11
13 Second Truck Club
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But yes i would replace lifters also after seeing how bad this cam is worn.
I am sure the roller on your lifters have marks on them that will eat a new cam!
#12
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Vids are hard to make some decisions like that.. If it has a hollow smacking sound it is a rod knock.. If it is more metallic sound it is something else.. Harder to explain then to diagnose it in person.. I would go about my way, make sure you change the oil, hell might be good to drop the pan and windage tray just to make sure **** isn't in there. Def do new lifters.. Put the cam in, if it still makes noise then go from there...
#13
13 Second Truck Club
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how was your oil pressure?
If you have a rod bearing knocking go from cylinder to cylinder taking the plug wire off or unplugging the coil
Your knock should change sound when you find what cylinder has a problem
Basically remove the explosion/pressure in the cylinder and the knock will go away or change sound pitch
If you have a rod bearing knocking go from cylinder to cylinder taking the plug wire off or unplugging the coil
Your knock should change sound when you find what cylinder has a problem
Basically remove the explosion/pressure in the cylinder and the knock will go away or change sound pitch
#14
TECH Fanatic
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There are various reasons for lobe damage, such as improper heat treatment as was previously mentioned and others. Valve float is another issue that will totally destroy a roller cam; due to the lifter being allowed to bounce on the cam lobe creating divots and once a cam has been damaged in this manner, it’s only a matter of time before the lobes are destroyed.
#20
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I had the same problem with my V.3 from Texas speed in my 5.3.
It had a nice tick pulled the cam and it had a lobe that looked a little worse than yours. ( I drove it ticking for a few weeks) but the lifter was also trashed.
So I would replace all lifters and the cam of course.
It had a nice tick pulled the cam and it had a lobe that looked a little worse than yours. ( I drove it ticking for a few weeks) but the lifter was also trashed.
So I would replace all lifters and the cam of course.