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Old 01-10-2021, 06:03 PM   #1
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Default Constant timing chain rattle with new chain

Hey guys, I replaced my timing chain, sprockets, tensioner, etc. when I rebuilt my motor. I ran into a problem when the machine shop put the oil pump/distributor spindle receiver gear on backwards. The one on the crankshaft itself. I got about 75km on that before the gears stripped off the spindle. I replaced it, and my timing chain now rattles CONSTANTLY. It sounds absolutely terrible. I have no clue why, I'm making great oil pressure (25 psi at warm idle).
Any ideas?
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Old 01-11-2021, 02:12 AM   #2
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spring in the new tensioner was weak and broke?
Did you use a ratchet tensioner?
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Old 01-11-2021, 02:38 AM   #3
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The oil passage to the tensioner may be clogged. Or there could be a bigger issue. I’d have some serious doubts about the quality of any of the other work done on the engine if that shop installed that gear backwards... what else did they do wrong? What additional damaged was caused by the introduction of that metal into the oil?
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Old 01-11-2021, 04:04 AM   #4
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OP: What brand parts did you use for the timing set? The cheapo kit I tried quickly had the freeze plug pop out of the top of the tensioner, and the result was the same as yours. That plug is visible on the KA24E by just pulling the valve cover and looking down on the top of the tensioner.
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Old 01-14-2021, 02:18 AM   #5
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Quote:
Originally Posted by rockcrawls View Post
spring in the new tensioner was weak and broke?
Did you use a ratchet tensioner?
No, I just have the spring powered one.
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Old 01-14-2021, 02:20 AM   #6
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Quote:
Originally Posted by alabama_lowlife View Post
The oil passage to the tensioner may be clogged. Or there could be a bigger issue. Id have some serious doubts about the quality of any of the other work done on the engine if that shop installed that gear backwards... what else did they do wrong? What additional damaged was caused by the introduction of that metal into the oil?
They only reassembled the crank assembly. I'm at fault for not verifying in the first place that it was correct. That being said they should've just put it in a box or something instead of putting it on and saying it was the right way. I'm right now cleaning the oil passage out to see if that was the issue, I'm really hoping it was. I bought a new tensioner as well just in case. Luckily that oil only ran for 50km. That's all I ran it for before changing the oil.
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Old 01-14-2021, 02:21 AM   #7
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Quote:
Originally Posted by LugNut1990 View Post
OP: What brand parts did you use for the timing set? The cheapo kit I tried quickly had the freeze plug pop out of the top of the tensioner, and the result was the same as yours. That plug is visible on the KA24E by just pulling the valve cover and looking down on the top of the tensioner.
Wasn't a cheapo kit. Can't remember but it was of a decent bit of money. Plug is still in there as I can see. Holding oil in the top but I'm assuming that has to do with it being sprayed around.
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Old 01-14-2021, 12:12 PM   #8
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Did you pull the pin holding the tensioner piston in place out?
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Old 01-14-2021, 12:49 PM   #9
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Quote:
Originally Posted by Foul_Mouth View Post
Did you pull the pin holding the tensioner piston in place out?
(after installing it and the chain+guide)

And always rotate the engine by hand, via the crank in the correct direction, after installing a timing set to observe its function.
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Old 01-14-2021, 08:31 PM   #10
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Quote:
Originally Posted by Foul_Mouth View Post
Did you pull the pin holding the tensioner piston in place out?
Yes I did.
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