| Harmonic balancer/ timing chain [message #343321] |
Wed, 15 May 2019 06:04  |
skip2
Messages: 544
Registered: September 2011
Location: Winter Haven,FL (center o...
Karma: 3
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Good morning all, for those that have had to replace their harmonic balancer for one reason or another what has proven to be the best and the right one the first time. I know it seems simple but there are a lot of options out there and I want to have the right one when I go to change out the crank seal. Been reading that the double roller chain is the best option for timing chain and will out live me. The paper work from the PO lists the Melling 40409 was installed when he rebuilt the motor. I'm going to check it through the fuel pump mount hole for slack. What has been the experience with double roller timing chains out there. As usual, Thanks.
Skip Hartline
74 Canyon Lands, FiTech,
3.7 FD LSD, Manny Tranny,
Springfield Distributor,
2001 Chevy Tracker Ragtop Towd
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| Re: [GMCnet] Harmonic balancer/ timing chain [message #343362 is a reply to message #343321] |
Wed, 15 May 2019 21:52  |
Jim Miller
Messages: 501
Registered: March 2008
Karma: 10
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Senior Member |
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On May 15, 2019, at 7:04 AM, Skip Hartline via Gmclist wrote:
> Been reading that the double roller chain is the best option for timing chain and will out live me. The paper work from the PO lists the Melling 40409 was installed when he rebuilt the motor. I'm going to check it through the fuel pump mount hole for slack. What has been the experience with double roller timing chains out there.
My OEM chain with the plastic sprockets had 1” of side-to-side play when I replaced it at 57,000 miles during other engine work. New part was a Cloyes 9-3113 set ($106 from Summit Racing in 5/2012) with crank sprocket set to a +4deg setting as advised by Dick Paterson. No complaints whatsoever in 12,000 miles accumulated so far.
I would NEVER install one of the gear-driven timing assemblies - just because racers use them does not mean we should. I completely trust what Mr. Paterson has to say when it comes to a 455 used in the GMC MH application and his advice was a double-roller chain set so that is what I used.
—Jim
Jim Miller
1977 Eleganza
1977 Royale
Hamilton, OH
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Jim Miller
1977 Eleganza II
1977 Royale
Hamilton, OH
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| Re: Harmonic balancer/ timing chain [message #343426 is a reply to message #343321] |
Fri, 17 May 2019 17:34 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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If it truly is quiet - I'd have to see one - it's a perfectly good idea.... but I suspect compared to a good double roller, it's overkill. Both of them ought to outlast the engine.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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