00:003.6. Look how complex that is. There's so many guides and so many things and they already have
00:06so much trouble. They barely make it to 100,000 miles before they fail or stretch. So here I have
00:11an actual timing chain. It's actually the small one that goes to the XLR. This is the old one.
00:17What happens on the GM 3.6 is the chain actually can stretch
00:22after being pulled for so long and then the timing is off and the only way to fix it
00:26is to put new chains.
00:30Here we have XLR timing chain guides. I'm going to take this plastic piece off of this
00:39guide. You can see two grooves running down the guide.
00:44And what that is is the actual chain
00:47has been rubbing on it. These are only 32,000 miles and they rub on the plastic like that
01:01and they make the grooves.
01:05Over time they literally can rub through the plastic all the way down to the metal. Then
01:09you start getting metal shavings into your oil and also that can alter the timing of the valve
01:16train. On some of the early Range Rovers they had the BMW 4.4 in it. These would actually fall off
01:23and go into the oil pan and then it would rub on metal and it would just go south really fast
01:29from there really bad. The thing I'm getting at here there are some manufacturers...
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