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Mandatory oil system mods |
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White70JavelinSST
Supporter of TheAMCForum Joined: Aug/08/2012 Location: Minnesota Status: Offline Points: 4867 |
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Here's the link you were asking about looks like they cost about $20 I was wondering, cause T/A Performance sells oil pump gears for Buicks, if the Buick gears are a bit larger than AMC gears, and if so, could the oil pump housing on an AMC timing cover be bored to fit these larger gears, thus making all those used housing with grooves in the oil pump bores, much more re-useable?
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70 Javelin SST, second owner, purchased 1972
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73hornut
AMC Addicted Joined: Jul/03/2007 Location: Southern Oregon Status: Offline Points: 3129 |
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71 Javelin
74 Gremlin 79 Spirit AMX Rogue Valley Rumblers Like Us on FB https://www.facebook.com/groups/1602825606650796 |
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PHAT69AMX
AMC Addicted Joined: Jul/07/2007 Location: West Virginia Status: Online Points: 5905 |
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AMC Oil Pump Gears are already Longer and deliver more Volume than Buick Oil Pump Gears.
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White70JavelinSST
Supporter of TheAMCForum Joined: Aug/08/2012 Location: Minnesota Status: Offline Points: 4867 |
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Yeah, I was kinda excited at first, but of course larger gear diameter means different shaft spacing, should thought of that myself. Too much wishful thinking....
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70 Javelin SST, second owner, purchased 1972
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PHAT69AMX
AMC Addicted Joined: Jul/07/2007 Location: West Virginia Status: Online Points: 5905 |
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Revised long AMC Oil System "info" List on Page 4
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ChillyB
AMC Nut Joined: Nov/14/2018 Location: PA Status: Offline Points: 371 |
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Regarding filter bypass, and after a fair amount of reading on this forum and others, I've concluded there is no reason to retain the factory bypass in the filter housing. But now I'm down to two options:
1. Run 100% filtration. Not sure I'm there yet. Yes, the housing bypass was eliminated with late engines because it was unreliable. But did they concurrently switch to a filter with integral bypass? If so how did the filter's integral bypass pressure compare to the one eliminated from the housing? Maybe the same. Lots of modern filter have an integral bypass that opens at single-digit psid. Hardly any modern filters open at pressures less than 20 psid. But this is differential pressure, not absolute pressure. So if your gauge reads 60 psi you may still only have 5 psid across the filter bypass valve (so still closed). 2. Eliminate the housing bypass, use a modern filter with integral bypass. Which filter should I choose? What bypass psid is best? Unless I'm using a high volume pump (I'm not), or starting with a filter that is restrictive when new (I hope not) then I dont think it matters much. If your filter differential pressure increases significantly then your bearings already lost the battle. Effectively maintaining oil flow while collecting all of the bearing bronze and lead probably isnt a winning strategy. The important thing (my opinion) is that you KNOW your bypass hasnt been blocked open by chunk of rogue RTV for the last three oil changes. Unless your engine is shedding massive bits of itself a little bypassing here and there wont hurt anything. 3. Here's what I think I'll actually do. Block the bypass in the housing. For initial break-in, and for a series of rapid succession filter changes (like four in the first day) I'll run filters with NO internal bypass so I provide maximum flow of 100% filtered oil because my engine WILL be shedding bits of break-in debris. After that I'll switch to a high quality filter with internal bypass.Perhaps I'll compare my measured pressure at the gage for each style of filter so see if it seems like my filter is bypassing at high RPMs. |
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PHAT69AMX
AMC Addicted Joined: Jul/07/2007 Location: West Virginia Status: Online Points: 5905 |
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No longer having anything myself to build I'm unsure just what I'd do.
But after reading a Smokey Yunik article in a 1980 Hot Rod Magazine I'd probably look into a remote oil filter mounting with 2 filters to reduce oil flow restriction / back pressure through the filter(s). An I'm unclear on what Filter the "new" late model Mopar Filter Fitting fits... The "new" double threaded piece that the filter screws to.
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White70JavelinSST
Supporter of TheAMCForum Joined: Aug/08/2012 Location: Minnesota Status: Offline Points: 4867 |
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The Mopar adapter fits the Motorcraft FL-1A filter and others as well, anything that matches to the FL-1A.
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70 Javelin SST, second owner, purchased 1972
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Jmerican
AMC Addicted Joined: Mar/29/2016 Location: Seattle, Wa Status: Offline Points: 585 |
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there ya go. Ford filter. Built in bypass. Big capacity. I like the Royal Purple. Good media, thick can. Purple. Can’t help that.
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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19611 |
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Sure you can... just a little spray paint... |
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Frank Swygert
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