2.4L Performance Tech 16 valve 172 hp EcoTec with 162 lb-ft of torque

missing thrush washer or shim

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Old 01-06-2023, 01:50 PM
  #11  
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Originally Posted by Oldblue
I’m not seeing any shims for the 2.4 or the 2.2 in 2007, I’ve done several timing chain replacements on these and don’t recall seeing a shim or washer in any of them.
is it possible someone replaced the OEM harmonic balancer with a 2.0 balancer? There are shims for those.
I don't believe so when we tore it down it was behind the sprocket! The thin washers are really flimsy and the one we pulled out was more like the one on the balancer bolt, made out of stamped steel like the flimsy ones. The VIN 3GNDA33P57S594569 MAKES IT A 2.4 Thanks.
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Old 01-06-2023, 03:01 PM
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I’ve got a 2.4, no shims or washers
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Old 01-06-2023, 04:57 PM
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Originally Posted by Oldblue
is that a parts schematic of an LNF or LE5?
This was LNF. The diagrams for the other engines seem to be missing. I didn't go looking too hard.

EDIT: I found the diagrams for 2.2 and for 2.4 - no shims.

But let's think about it. Maybe the shims are pushing the cover out a little? Try without the shims. If it still isn't right, try a new balancer.

Last edited by RJ_RS_SS_350; 01-06-2023 at 05:31 PM.
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Old 01-06-2023, 05:56 PM
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The shims would move the balancer not the cover.
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Old 01-06-2023, 06:43 PM
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Must be the wrong balancer then. The thick washer was compensating for it? I think there would be a point where a washer that was too thick would interfere with the front seal, right?

Here's the 2.4


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Old 01-06-2023, 06:52 PM
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Engine Crankshaft Pulley

Part Number: 90537704
Supersession(s): 90537704; 12787628; 12623793; 55355289

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Old 01-06-2023, 09:11 PM
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All I can is without it the balancer rubs the timing cover, we try a new balancer same thing it rubs.
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Old 01-06-2023, 09:27 PM
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I would guess either the timing cover is bent/deformed or it is not pulling down flush when you snug up the bolts.

Any chance that someone replaced the timing cover gasket but forgot to remove the old gasket ?
2 gaskets would cause the timing cover to stick out too far. Then the balancer would possibly rub on the cover.

Last edited by firemangeorge; 01-07-2023 at 06:38 AM.
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Old 01-07-2023, 07:08 AM
  #19  
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That has happened before, here on the site a few years ago.
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Old 01-07-2023, 11:19 AM
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Seems like a hard one to miss lol
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