Dual or single oil filters ?

[FUNFER2]

With my new side oiler engine, I'm wondering if a dual oil filter is needed ?
I know that we want the best filtering for our expensive engines but, are two necessary if it's not a full out racing motor ?

I do plan on trying the "Filter Mag" that attaches to one filter. I like the clean appearance in the engine bay, and since it's so tight with a big block, I don't see a great location for all that's needed for the dual filters, bracket and lines.

I have a 8 qt. oil pan and if,.... I hook up and use my oil cooler, that may add two more qts. I'm installing my cooler mainly for looks, as I do not race a lot.

So, do we need two or not ?

[Skuzzy]

Hmmm, if the filters are connected in a serial manner, there is nothing to gain if they are the same filter.

If they are in parallel, it would serve to reduce the pressure drop through the filters, but still would not make the oil any cleaner.

I cannot think of any cases where dual oil filters would help a street performance car. Anyone else?

By the way, make sure that you have a thermostat by-pass on that oil cooler.

[bobcowan]

I agree. Do it for looks only.

As for the oil cooler, I would not hook that up at all, even for looks. The oil will frequently stay too cold to work properly, you'll have a pressure drop, and you'll waste energy pumping the oil around. Install it with whatever lines you like, but terminate the lines behind the alum side panels. Or, make a loop around the back of the radiater; that would keep it from getting dirt in it, in case you want to go racing in a coupkle of years.

[Ralphy]

Skuzzy

A cheap way to add an extra quart of oil.............

[FUNFER2]

I never intended to hook up the oil cooler lines. As you spoke of, terminate the lines and hide them. The Accusump will hook up to the sandwich, not the cooler.

I do have the electric Accusump Valve kit, that provides a convenient way of operating the Accusump. They are useful when the accumulator is mounted in a hard to access location. When wired directly into the ignition switch the Accusump can be operated automatically to provide pre-oiling.

People expect to see a oil cooler and the dual fan assembly, when looking into the fish mouth opening and they seem disappointed if these are not installed. lol

As far as I know, the dual oil filters are in-line with each other, doubling the filtering. In my case of not racing full time, I just don't feel the need, just change it often, especially when breaking the motor in. I will buy the "filter mag" and a cutter, to inspect it after the first dyno run, and thereafter for a while.

[patrickt]

Originally Posted by FUNFER2

People expect to see a oil cooler and the dual fan assembly, when looking into the fish mouth opening and they seem disappointed if these are not installed. lol

That is absolutely true. There's also a safety factor as well. Having both the pushers, and a puller fan, well let you limp home without overheating if and when one of them fails.

[FUNFER2]

Yes'em.

I also believe that if you're in traffic on a hot day, as far back as the radiator is from the nose of the cobra, the dual fans can help suck in cooler air, aiding the system. Does that seem logical to you ?

[patrickt]

Originally Posted by FUNFER2

Yes'em.

I also believe that if you're in traffic on a hot day, as far back as the radiator is from the nose of the cobra, the dual fans can help suck in cooler air, aiding the system. Does that seem logical to you ?

Yes, but other than looking really cool, there is no benefit to them when the car is over about 15mph.

[Skuzzy]

Good point Ralphy.

Yes, a dual filter in series would allow you to drive longer between oil changes. It just does not get the oil any cleaner. It does place more load on the oil pump, thereby increasing drag a bit.

[Bob In Ct]

The dual setups are in parallel.

Use a small micron filter (Mobil1) on one side and a high flow (Ford racing, WIX) on the other, and get flow and good filtration.

Bob

[bobcowan]

The filters are parallel. That means it goes from a manifold on one side, through both filters to a manifold on the other side, then back to the engine. There's no advantage to using two differant types of filter that I can think of.

[Skuzzy]

Oops bobcowan. You changed the original reply I was responding to.

Yes, both filters should be the same in a parallel setup. If parallel, then the clear advantage is the reduced load on the oil pump, along with the addition of a quart of oil. Time to service would be extended as well.

[Bob In Ct]

You're both right, you're both wrong.

Using two different filters (one which passes a lot of oil and one which traps very small particles) gives us the best of both worlds - good flow and good filtration.

Since I don't have this setup I'm using a Moroso Racing filter (27 microns) in an effort to get improved flow without the down side of a typical 60 micron racing filter.

Bob

[FUNFER2]

I thought the Moroso was a 10 micron ?
Anderson at Gessford gave me one when I visited him a while back.

Looks like Canton's is 8 micron. Why a 27 ? That's a big difference.

[patrickt]

Originally Posted by FUNFER2

I thought the Moroso was a 10 micron ?
Anderson at Gessford gave me one when I visited him a while back.

Looks like Canton's is 8 micron. Why a 27 ? That's a big difference.

Both Moroso & Wix are at 25 (or real close). Supposedly, Moroso's engineers have opined that particles smaller than that cause no damage to the engine and that filters that brag that they go down to 10 microns, or the like, are actually accomplishing nothing. Now don't bash me; I don't know. Yes, I do use a Moroso filter, and I'm sure you can find the Moroso engineer's theories with a bit of Googling....

[FUNFER2]

That sounds logical to me, so I'm wondering about the Canton with 8 ?
Think it's too restrictive and will hut the flow of oil ?

I wasn't bashing you bud.

[patrickt]

Originally Posted by FUNFER2

That sounds logical to me, so I'm wondering about the Canton with 8 ?
Think it's too restrictive and will hut the flow of oil ?

Considering how little we drive these things, along with the fact that Wix & Moroso are at least as good or better than what we put on our other cars (all of which get to or beat 100,000 miles), coupled with the knowledge that we change the oil probably more often than we change our underwear.... I feel pretty comfortable with my one single Moroso filter.

[Skuzzy]

Originally Posted by Bob In Ct

You're both right, you're both wrong.

Using two different filters (one which passes a lot of oil and one which traps very small particles) gives us the best of both worlds - good flow and good filtration.

Since I don't have this setup I'm using a Moroso Racing filter (27 microns) in an effort to get improved flow without the down side of a typical 60 micron racing filter.

Bob

Ok Bob, I am going to poke the fire a bit here.

If the filters are fed in parallel, the filter with the larger micron element would require less oil pressure to push through the filter.

Now the smaller micron filter will require a higher pressure to push the oil through.

Unless there is some type of restrictor or regulator involved, what prevents virtually all the oil from taking the path of least resistance?

I know at some point in time, the larger micron filter will require a higher amount of pressure and then the smaller micron filter would start getting an equal to or higher than percentage of the oil flow.

What am I missing? Or is that the way it is supposed to work?

[RodKnock]

If you like the looks, then go for it.

Otherwise, IMHO, it's just another potential leak waiting to happen. More connections, more potential problems.

[Bob In Ct]

Skuzzy:

Most of the oil will go through the guy with the lower restriction, but the oil that takes the path through the finer filter will have all the particles smaller than 10 microns (or so) removed. They will not find their way back. So even if only 25% of the oil goes through the fine filter the oil will be kept much cleaner since the oil is going through one filter or the other very often.

http://www.moroso.com/catalog/catego...?catcode=20002

Bob