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Old 04-08-2017, 01:30 PM   #1
FieroItaliano85
 
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Harmonic Balancer Wobble

I did a search and couldn't find an answer. After my LSA conversion, the harmonic balancer appears to have a bad wobble. Now it is possible it always wobbled but now that I messed with it, I'm not sure. Obviously I voided my warranty, so I'm SOL with getting a new one free. My question is, if I buy an underdrive pulley to replace it, will my current serpentine belt work still or do I need a new one? Thanks.
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Old 04-08-2017, 01:41 PM   #2
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I would not do and under-drive pulley with the LSA conversion, everything runs slower -- including the blower. I'd put a new LS3 balancer back on with a new timing cover seal and then pin the balancer to the crank. The new balancer is about $60 and get a new crank bolt. Use red loctite on the new bolt...

Best of luck!

-Don
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Old 04-08-2017, 01:42 PM   #3
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Originally Posted by hammdo View Post
I would not do and under-drive pulley with the LSA conversion, everything runs slower -- including the blower. I'd put a new LS3 balancer back on with a new timing cover seal and then pin the crank.

Best of luck!

-Don
crank is already pinned. Thank you for the speedy response!
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Old 04-08-2017, 01:44 PM   #4
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Np! I added a bit more info to my original post ;o)

-Don
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Old 04-08-2017, 01:56 PM   #5
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Np! I added a bit more info to my original post ;o)

-Don
Noted, thanks!!!
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Old 04-10-2017, 08:03 AM   #6
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Stock diameter ATI will work best for what you are trying to accomplish, that's what I did
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Old 04-12-2017, 04:16 AM   #7
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Stock diameter ATI will work best for what you are trying to accomplish, that's what I did
Thanks, but already ordered the stock pulley replacement.
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Old 04-12-2017, 04:18 AM   #8
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Originally Posted by hammdo View Post
I would not do and under-drive pulley with the LSA conversion, everything runs slower -- including the blower. I'd put a new LS3 balancer back on with a new timing cover seal and then pin the balancer to the crank. The new balancer is about $60 and get a new crank bolt. Use red loctite on the new bolt...

Best of luck!

-Don
Quick question reference the already pinned crank...would it be okay to remove the pin that I already have installed, then when I install the new pulley, re-pin in a different location?
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Old 04-12-2017, 06:47 AM   #9
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Quick question reference the already pinned crank...would it be okay to remove the pin that I already have installed, then when I install the new pulley, re-pin in a different location?
Yes, just clock your new pin 180 degrees opposite of the existing pinned location
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Old 04-12-2017, 08:15 AM   #10
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Yes, just clock your new pin 180 degrees opposite of the existing pinned location
Great, thanks!
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Old 04-13-2017, 12:33 PM   #11
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Quote:
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Yes, just clock your new pin 180 degrees opposite of the existing pinned location
Right on the money! LSA conversion should not used any type of underdrive pulley... per ADM..

-Don
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