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AMX 401 Take 4 |
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purple72Gremlin 
AMC Addicted 
Charter Member Joined: Jul/01/2007 Location: Illinois Status: Offline Points: 16614 |
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 Posted: Nov/30/2013 at 12:05am |
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Nice!
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amx39068
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Joined: Feb/21/2008 Location: Arizona Status: Offline Points: 11576 |
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Posted: Nov/30/2013 at 8:14am |
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I see Molnar got the offset on the rods correct so they are centered on the wrist pin....good deal.
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Dan Curtis-Owner and CEO AZ AMC Restorations; Facebook: https://www.facebook.com/amcmusclecars/ & Curtis Real Estate Development
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amx39068
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Posted: Nov/30/2013 at 8:16am |
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BTW, did you run the rear oiler on the other setup that fried the cam bearings? I would have thought that you might not want to rob that oil flow this time around in order to get more oil to the cam. With a properly set up oiling systems the band aid rear oiler line is not needed. You can alway pull it out now and put pipe plugs in the holes and add it later if you really feel you want it back in there down the road.
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Dan Curtis-Owner and CEO AZ AMC Restorations; Facebook: https://www.facebook.com/amcmusclecars/ & Curtis Real Estate Development
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Rebel Machine
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Joined: Jul/03/2007 Location: Western Il Status: Offline Points: 5121 |
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Posted: Nov/30/2013 at 11:08am |
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Yes, the other 401 has the same valley oil line. It ran for 8 years before it started having problems. I don't think the valley line was the cause.
-Steve- |
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ARIZONAAMX
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Joined: Jun/15/2013 Location: Kingman, Az Status: Offline Points: 81 |
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Posted: Nov/30/2013 at 12:25pm |
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What compression are the Wisecos
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amx39068
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Posted: Nov/30/2013 at 4:33pm |
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Those are the -27cc dish wiseco pistons which have a 1.50 compression height. With stock 50.6cc heads they are 10.15 and with 58cc heads they are 9.46.
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Dan Curtis-Owner and CEO AZ AMC Restorations; Facebook: https://www.facebook.com/amcmusclecars/ & Curtis Real Estate Development
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amx39068
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Posted: Nov/30/2013 at 4:35pm |
Did you check the old copper line for a crack? One of the issues with that setup is that over time the copper line cracks and piddles oil in the valley area thus reducing your oil pressure particularly when hot.
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Dan Curtis-Owner and CEO AZ AMC Restorations; Facebook: https://www.facebook.com/amcmusclecars/ & Curtis Real Estate Development
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Rebel Machine
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Joined: Jul/03/2007 Location: Western Il Status: Offline Points: 5121 |
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Posted: Nov/30/2013 at 4:53pm |
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I thought about removing the line and plugging the holes the last time around. After examining the copper line, I didn't find any faults with it so I re-installed it. Had it on the engine stand with the intake off and spun the oil pump with a drill. There were no leaks in the copper line. I could see the lifters bleeding oil up into the valley but no issue with the copper line. I wish I could have run the same test with the block at operating temperature.
-Steve- |
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amx39068
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Posted: Nov/30/2013 at 5:03pm |
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One of the challenges with a crack in the line is it may not show any visible leakage when cold due to thick oil and that the copper may not yet be expanded by the heat. Last one I did I had a custom thick wall teflon hydraulic line made up. The guy at the hydraulic store said it was something like 10X more durable than a copper line.
Edited by amx39068 - Nov/30/2013 at 5:07pm |
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Dan Curtis-Owner and CEO AZ AMC Restorations; Facebook: https://www.facebook.com/amcmusclecars/ & Curtis Real Estate Development
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Rebel Machine
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Joined: Jul/03/2007 Location: Western Il Status: Offline Points: 5121 |
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Posted: Nov/30/2013 at 5:03pm |
The Wiseco number is on the piston. I believe they also have a non-dished piston. -Steve-  |
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Rebel Machine wrote: