[DeTomaso] 10 qt Oil Pan-long

[Charles McCall]

Michael - that´s called "charm" !!!!! :-) 

-----Mensaje original-----
De: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] En
nombre de Michael Shortt
Enviado el: Thursday, 01 February, 2007 9:25 PM
Para: JDeRyke at aol.com
CC: detomaso at realbig.com
Asunto: Re: [DeTomaso] 10 qt Oil Pan-long

Man, there just isn't anything freaking normal on our cars at all!

Michael Shortt


On 2/1/07, JDeRyke at aol.com <JDeRyke at aol.com> wrote:
>
> What I think I know: when Boss engines came out in the very late '60s, 
> Ford found that with the rpm capabilities from mechanical cams, oil 
> didn't drain back fast enough into the pans through the two tiny 
> return ports in each Cleveland head, holding much of the oil up top 
> and running the pan momentarily dry.
> MIke Cook once mentioned that some 3-1/2 qts of oil might be up top at 
> high rpms, leaving only 1-1/2 qts in the pan for the crank. So the 
> typical factory
> response- don't-spend-any-real-money-to-fix-it was to recommend 
> overfilling the std pan by a quart- thus a stock '5-quart' pan got 6 
> qts, and rod throwing lessened. Note there are three different 
> possible "stock" Ford pans for a 351C, all holding the exact same 
> volume of oil.
> When enlarged 8-qt pans for the 351C in a Pantera showed up, the 'std 
> overfill' for high rpm use became 10 quarts. FWIW, I've always run 
> 8-1/2 qts in our 17-yr-old 6500-rpm-limit engine- lately, with a 
> remote filter & oil-to-water heat exchanger with remote oil 
> thermostat, all plumbed with dash-6 lines.
> The
> stock dipstick shows "full" under these conditions.
>
> As for the dipstick- initially, Panteras got std front-engine Mustang 
> dipsticks, but since one has to remove the engine screen and grope 
> around far up at the front of the engine to find & return a 
> front-mount stick, owners simply weren't checking their oil, and 
> warranty costs increased. So Ford did a change to braze-modify Mustang 
> sticks and add a tubing guide so rear access for oil checking was 
> easier- hence the first TSB (May '72- bulletin 1, article 4) that adds 
> a long flexible dipstick. Some of the first few modified sticks (done 
> by an unnamed outside contractor) were done to the wrong length and 
> installed in some Panteras, so a second TSB (March '73- bulletin 5, 
> article 34) specifies exactly 38 inches tip-to-stop. Also, 
> occasionally one of the braze-modified sticks breaks from vibration 
> and unskilled gas station mechanics "fix" it- to the wrong length.
> One wrong-length stick with a  really sloppy braze-job (so I think it 
> was l ocally repaired) showed up in a Nor-Cal Pantera some time ago 
> and caused much yelling & arm-waving between the owner and a local 
> engine builder before they thought to check the length- which was 
> way-short. The poor engine had 10 qts of oil in a stock pan, and all 
> the seals were leaking!
> Finally, since all Pantera-specific "big pans" only extend the sump 
> horizontally and do not lower it, std 38" dipsticks are inherently
> calibrated- not by
> 1-qt/2-qt volumes but by 'low' and 'full'. Cheers- J DeRyke 
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--
Michael L. Shortt
Savannah, Georgia


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