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I found the rattle

Posted: Tue Oct 02, 2018 6:13 pm
by mooreken
I had a large rattle after the track day at Daytona.
It didn’t take long to find. The harmonic balancers rubber insert gave up and the outer ring became unattached. The alternator pulley stopped the ring from flying off. Glad I decided to cut the last session short.
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I had an oil leak along with a slightly lower oil pressure reading as I’m going to upgrade to a road race pan I pulled the circle track pan off. So far things look ok. I’ll pop a couple rod bearings and take a look. I think the lower pressure was the pan gasket breaking up a little. Don’t know why it was a good brand.
I cut the filter apart and found a fair amount of 1/8 to 3/16” chunks in the filter. Hopefully that was the pressure issue.

Re: I found the rattle

Posted: Wed Oct 10, 2018 5:28 pm
by Avalanche325
Look at SFI rated balancers. They are rated for high RPM and if they fail, won't throw the outer ring through your hood.

Re: I found the rattle

Posted: Wed Oct 10, 2018 6:03 pm
by mooreken
Thanks...that is what I have replaced it with. This was the second failure I had with this brand in the last 6 months. The first one only slipped. Made the timing lines go all wacky.