Re: [Amc-list] Zinc oils/roller engine/scraper

[Frank Swygert <farna@xxxxxxx>]

1. The $1.39 or so Accel oil seems to be the way to go, at least the less expensive. Might be reprocessed (cleaned used oil, new additives), but that's not a problem. Dino oil doesn't break down, just gets dirty and the additives break down. Clean it to new oil specs and put in more additives and it's ready to go again! In the 20s and 30s when there were no (or few) additives in oil people used to strain it through cheese cloth, let it set so anything smaller settled to the bottom, then poured all but a small amount back in! Model Ts seemed to run just fine that way. 

2. A "roller motor" has roller LIFTERS. Instead of the flat of the tappet (hence "flat-tappet" engine) sliding on the cam, there's a roller on the end. Roller = less friction. 

3. A "crank scraper" is a piece of metal that attaches to the block, usually between the oil pan and block, that is notched just enough for the crank to clear. It's mounted on one side so that any oil will be "scrapped" off the crank instead of slung back up into the engine. The theory is that oil draining back down over the crank (or picked up from sloshing in the pan) creates drag on the crank. The "scraper" catches oil slung around by the crank, where it drips back into the pan. It has proven to give small gains, but not enough to tear an engine down for. If you already have it apart scrapers are cheap and easy to install.

4. Fram isn't the only one to have had problems. Seems like it was 5-10 years ago that they got a lot of filters with faulty (or no) by-pass valves. Some engines would blow them off or swell them up in short order! By now the problem has been fixed, but they apparently never recalled them, just let them run out through the distribution system. I was told that some NAPA filters (and a couple other brands, probably sourced from the same manufacturer) did the same, but they were quickly pulled from the shelves. I do know that more Fram filters caused more people problems than any others over a longer period of time -- that they didn't pull them is speculation on my part. They may have, but too many got out before they did -- IF they did (so many Fram filter stories that I don't think they could pulled them). So a lot of people won't use Fram to this day. 


----------------
Date: Tue, 18 Mar 2008 12:26:59 -0400
From: ksiroonian@xxxxxxx

Hey guys, ?Thanks for all the? great threads and info on the oils with zinc. I will start using that wall mat pre 88 or the diesel engine oil in my pre 88 cars. $9.19 a gallon for the diesel oil is not bad, 1.39 is good too. I have been using fram filters for years and never had a problem?in 40 years,?but i do read the threads of how much everyone hates Fram.
ok for the non engine tech types here, like me, what is a roller engine versus non roller or whatever that makes the zinc not necesary?? is it overhead valve, versus overhead cam? Never took a motor apart so I hae no idea, but I may too to try sometime soon when i restore my dads 74 ambo 360, sitting for many years. what are are amc?engines-where is the roller thing??and what is a crank scraper? In quiring minds would like to know... regards.
and thanks,


-- 
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
(free download available!)

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