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Rod Knock on startup |
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timoboy
AMC Nut Joined: Oct/27/2008 Location: San Diego, CA Status: Offline Points: 394 |
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Posted: Feb/26/2011 at 8:32pm |
1975 360, 10w30 Valvoline, Napa Gold/WIX filter. Vehicle has rod knock on start up-about 3-4 knocks, then fine. Very good performing/smooth running engine except this issue. In never use fram filters, always napa gold. Am I looking at a clogged screen or worn oil pump or possibly something else?
If I need an oil screen, I will need to drop the pan however the vehicle is a Matador Coupe so removing the hood is not an option. I was told I could drop the cross member, but how might I support the engine without removing the hood while the cross member is off? |
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A-Sedan
AMC Apprentice Joined: Jul/01/2007 Location: United States Status: Offline Points: 55 |
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SC397
AMC Addicted Joined: Apr/30/2009 Location: Michigan Status: Offline Points: 5476 |
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I doubt that the oil screen is plugged and there is no engine rebuild in a can that works to my knowledge. If you have a rod knock and, you KNOW that it is a rod knock you better pull it apart and inspect it before it is too late. As a reference for you, I smoked a brand new engine on start up with NAPA 10w30 oil and a NAPA Gold/WIX filter. (Took out the cam lobes hence, the bearings) I have since switched to a Delco PF24 and Rotella or Comp Cams oil. And, I always use some form of Zinc additive.
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Fluffy73
AMC Addicted Joined: Nov/21/2007 Location: Castlegar, BC Status: Offline Points: 3059 |
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My 360 in my Javelin does this too. I attribute it to just being a high mileage engine. Except I would never run anything as thin as 10w30. I'm usually running 20w-50 in my Javelin, but it's also strictly a summer cruiser.
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I am genetically incapable of being Politically Correct.
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poormansMACHINE
AMC Addicted Charter Member Joined: Jun/28/2007 Location: Shoemaker-Levy9 Status: Offline Points: 12302 |
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You;re looking at a worn bearing/journal, not a clogged screen or wrong brand filter.
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timoboy
AMC Nut Joined: Oct/27/2008 Location: San Diego, CA Status: Offline Points: 394 |
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I will look into an AC delco filter, and may do a new oil pump too as the front cover has to come off anyhow to fix a coolant leak. I just don't see the engine being "finished" because of this though. I park on a reasonably inclined drive, and never more then 4 knocks usually only 2-3 then a motor that runs like new, burns no oil, idle's smoothly and pulls hard. Seems mainly like an oil delivery issue at start-up.
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SC397
AMC Addicted Joined: Apr/30/2009 Location: Michigan Status: Offline Points: 5476 |
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"you;re looking at a worn bearing/journal, not a clogged screen or wrong brand filter."
That, is what I was trying to say but you got to the point faster..... |
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poormansMACHINE
AMC Addicted Charter Member Joined: Jun/28/2007 Location: Shoemaker-Levy9 Status: Offline Points: 12302 |
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Denial.
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purple72Gremlin
AMC Addicted Charter Member Joined: Jul/01/2007 Location: Illinois Status: Offline Points: 16611 |
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Ohio AMX
AMC Addicted Charter Member Joined: Jun/29/2007 Location: NE Ohio Status: Offline Points: 4935 |
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When I worked at NAPA their oil was made by Valvoline, which I don't like. I prefer Pennzoil. Try some Lucas oil stabilizer to help with the dry start-ups.
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1940 Hupmobile Skylark
1968 Javelin future Pro Street 1969 AMX 290/auto (first car) 1997 Dodge SS/T 5.9L AMO# 983 |
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