Vance and the Grouppe
You got my curiosity up about filters also. Googled and found this site:
http://minimopar.knizefamily.net/oilfilterstudy.html
It has, to me, a fairly decent report on a bunch of filters. Appears the
answer to the pressure relief/ anti-drain back valve is...some do, some
don't. Probably should look at what we're running and see what it has
inside.
Oil coolers.....Run a thermostat in the line so you don't attempt to
cool 30 deg F oil, but other than that, what's it gonna hurt. Typical
thermostats open around 180 F and circulate ~10% of the oil through the
cooler at all times to eliminate potential air bubbles when it opens.
If the oil doesn't get that hot, well, you got a neat lookin fly
catcher and if it does become that hot you have a viscosity index
improver - or somethin like that.
Bill '70 6
Navarrette, Vance wrote:
> Sloane:
>
> I was given to understand that all oil filters do this; If the
>pressure drop across the media gets too high, the filter is bypassed to
>permit oil to flow. This is a standard safety feature I thought. In the
>stock filter the media is sealed against the block by a spring. If the
>pressure gets too high, the media lifts off the block, permitting oil to
>flow directly from the inlet to the outlet.
> On canister filters, I *thought* there was a similar feature. In
>addition, some filters have anti-drain back valves to keep the oil in
>the block when the engine is off, permitting rapid oil circulation on
>startup and reducing wear. Obviously, if you go the spin on route you
>want an anti-drain back valve in the filter.
>
> Now you have me wondering. Hmm. Time for a little research.
>
>
> Vance
>
>-----Original Message-----
>From: owner-6pack@autox.team.net [mailto:owner-6pack@autox.team.net] On
>Behalf Of im sloane
>Sent: January 09, 2006 7:14 AM
>To: 6pack@autox.team.net
>Subject: Re: oil cooler
>
>hi guys,
>
><snip>
>
>Anyway, he said "You don't want one of those." He went on to describe
>how
>the original filter canistor is designed so that, under high RPMs, the
>filter will back-off, letting more oil flow thru when it's really
>needed.
>This is to say that the increased flow is more important than additional
>oil
>cleaning at this moment. He went on to say he had seen many cars with
>the
>spin on oil filter that had been damaged due to 'top end oil
>starvation'.
>Now, I've seen the aftermarket oil feeds to the top of the engine, which
>
>sort of backed up his thoughts to me.
>
>What do you think? Was he pretty much right, or full of gunk?
>
>Sloane :)
>'69-Six
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